git.oblomov.eu Git - wine/blob - controls/edit.c

   1 /*
   2  *      Edit control
   3  *
   4  *      Copyright  David W. Metcalfe, 1994
   5  *      Copyright  William Magro, 1995, 1996
   6  *      Copyright  Frans van Dorsselaer, 1996, 1997
   7  *
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 /*
  25  *      please read EDIT.TODO (and update it when you change things)
  26  */
  27
  28 #include "config.h"
  29
  30 #include <string.h>
  31 #include <stdlib.h>
  32
  33 #include "winbase.h"
  34 #include "winnt.h"
  35 #include "win.h"
  36 #include "wine/winbase16.h"
  37 #include "wine/winuser16.h"
  38 #include "wine/unicode.h"
  39 #include "controls.h"
  40 #include "local.h"
  41 #include "user.h"
  42 #include "wine/debug.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(edit);
  45 WINE_DECLARE_DEBUG_CHANNEL(combo);
  46 WINE_DECLARE_DEBUG_CHANNEL(relay);
  47
  48 #define BUFLIMIT_MULTI          65534   /* maximum buffer size (not including '\0')
  49                                            FIXME: BTW, new specs say 65535 (do you dare ???) */
  50 #define BUFLIMIT_SINGLE         32766   /* maximum buffer size (not including '\0') */
  51 #define GROWLENGTH              32      /* buffers granularity in bytes: must be power of 2 */
  52 #define ROUND_TO_GROW(size)     (((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))
  53 #define HSCROLL_FRACTION        3       /* scroll window by 1/3 width */
  54
  55 /*
  56  *      extra flags for EDITSTATE.flags field
  57  */
  58 #define EF_MODIFIED             0x0001  /* text has been modified */
  59 #define EF_FOCUSED              0x0002  /* we have input focus */
  60 #define EF_UPDATE               0x0004  /* notify parent of changed state */
  61 #define EF_VSCROLL_TRACK        0x0008  /* don't SetScrollPos() since we are tracking the thumb */
  62 #define EF_HSCROLL_TRACK        0x0010  /* don't SetScrollPos() since we are tracking the thumb */
  63 #define EF_AFTER_WRAP           0x0080  /* the caret is displayed after the last character of a
  64                                            wrapped line, instead of in front of the next character */
  65 #define EF_USE_SOFTBRK          0x0100  /* Enable soft breaks in text. */
  66
  67 typedef enum
  68 {
  69         END_0 = 0,      /* line ends with terminating '\0' character */
  70         END_WRAP,       /* line is wrapped */
  71         END_HARD,       /* line ends with a hard return '\r\n' */
  72         END_SOFT,       /* line ends with a soft return '\r\r\n' */
  73         END_RICH        /* line ends with a single '\n' */
  74 } LINE_END;
  75
  76 typedef struct tagLINEDEF {
  77         INT length;             /* bruto length of a line in bytes */
  78         INT net_length; /* netto length of a line in visible characters */
  79         LINE_END ending;
  80         INT width;              /* width of the line in pixels */
  81         INT index; /* line index into the buffer */
  82         struct tagLINEDEF *next;
  83 } LINEDEF;
  84
  85 typedef struct
  86 {
  87         BOOL is_unicode;                /* how the control was created */
  88         LPWSTR text;                    /* the actual contents of the control */
  89         UINT buffer_size;               /* the size of the buffer in characters */
  90         UINT buffer_limit;              /* the maximum size to which the buffer may grow in characters */
  91         HFONT font;                     /* NULL means standard system font */
  92         INT x_offset;                   /* scroll offset        for multi lines this is in pixels
  93                                                                 for single lines it's in characters */
  94         INT line_height;                /* height of a screen line in pixels */
  95         INT char_width;         /* average character width in pixels */
  96         DWORD style;                    /* sane version of wnd->dwStyle */
  97         WORD flags;                     /* flags that are not in es->style or wnd->flags (EF_XXX) */
  98         INT undo_insert_count;  /* number of characters inserted in sequence */
  99         UINT undo_position;             /* character index of the insertion and deletion */
 100         LPWSTR undo_text;               /* deleted text */
 101         UINT undo_buffer_size;          /* size of the deleted text buffer */
 102         INT selection_start;            /* == selection_end if no selection */
 103         INT selection_end;              /* == current caret position */
 104         WCHAR password_char;            /* == 0 if no password char, and for multi line controls */
 105         INT left_margin;                /* in pixels */
 106         INT right_margin;               /* in pixels */
 107         RECT format_rect;
 108         INT text_width;                 /* width of the widest line in pixels for multi line controls
 109                                            and just line width for single line controls */
 110         INT region_posx;                /* Position of cursor relative to region: */
 111         INT region_posy;                /* -1: to left, 0: within, 1: to right */
 112         EDITWORDBREAKPROC16 word_break_proc16;
 113         void *word_break_proc;          /* 32-bit word break proc: ANSI or Unicode */
 114         INT line_count;         /* number of lines */
 115         INT y_offset;                   /* scroll offset in number of lines */
 116         BOOL bCaptureState; /* flag indicating whether mouse was captured */
 117         BOOL bEnableState;             /* flag keeping the enable state */
 118         HWND hwndParent;               /* Handle of parent for sending EN_* messages.
 119                                           Even if parent will change, EN_* messages
 120                                           should be sent to the first parent. */
 121         HWND hwndListBox;              /* handle of ComboBox's listbox or NULL */
 122         /*
 123          *      only for multi line controls
 124          */
 125         INT lock_count;         /* amount of re-entries in the EditWndProc */
 126         INT tabs_count;
 127         LPINT tabs;
 128         LINEDEF *first_line_def;        /* linked list of (soft) linebreaks */
 129         HLOCAL hloc32W;         /* our unicode local memory block */
 130         HLOCAL16 hloc16;        /* alias for 16-bit control receiving EM_GETHANDLE16
 131                                    or EM_SETHANDLE16 */
 132         HLOCAL hloc32A;         /* alias for ANSI control receiving EM_GETHANDLE
 133                                    or EM_SETHANDLE */
 134 } EDITSTATE;
 135
 136
 137 #define SWAP_INT32(x,y) do { INT temp = (INT)(x); (x) = (INT)(y); (y) = temp; } while(0)
 138 #define ORDER_INT(x,y) do { if ((INT)(y) < (INT)(x)) SWAP_INT32((x),(y)); } while(0)
 139
 140 #define SWAP_UINT32(x,y) do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
 141 #define ORDER_UINT(x,y) do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
 142
 143 #define DPRINTF_EDIT_NOTIFY(hwnd, str) \
 144         do {TRACE("notification " str " sent to hwnd=%08x\n", \
 145                        (UINT)(hwnd));} while(0)
 146
 147 /* used for disabled or read-only edit control */
 148 #define EDIT_SEND_CTLCOLORSTATIC(hwnd,hdc) \
 149         (SendMessageW(GetParent(hwnd), WM_CTLCOLORSTATIC, \
 150                         (WPARAM)(hdc), (LPARAM)(hwnd)))
 151 #define EDIT_SEND_CTLCOLOR(hwnd,hdc) \
 152         (SendMessageW(GetParent(hwnd), WM_CTLCOLOREDIT, \
 153                         (WPARAM)(hdc), (LPARAM)(hwnd)))
 154 #define EDIT_NOTIFY_PARENT(hwnd, es, wNotifyCode, str) \
 155         do \
 156         { /* Notify parent which has created this edit control */ \
 157             DPRINTF_EDIT_NOTIFY((es)->hwndParent, str); \
 158             SendMessageW((es)->hwndParent, WM_COMMAND, \
 159                      MAKEWPARAM(GetWindowLongA((hwnd),GWL_ID), wNotifyCode), \
 160                      (LPARAM)(hwnd)); \
 161         } while(0)
 162 #define DPRINTF_EDIT_MSG16(str) \
 163         TRACE(\
 164                      "16 bit : " str ": hwnd=%08x, wParam=%08x, lParam=%08x\n", \
 165                      hwnd, (UINT)wParam, (UINT)lParam)
 166 #define DPRINTF_EDIT_MSG32(str) \
 167         TRACE(\
 168                      "32 bit %c : " str ": hwnd=%08x, wParam=%08x, lParam=%08x\n", \
 169                      unicode ? 'W' : 'A', \
 170                      hwnd, (UINT)wParam, (UINT)lParam)
 171
 172 /*********************************************************************
 173  *
 174  *      Declarations
 175  *
 176  */
 177
 178 /*
 179  *      These functions have trivial implementations
 180  *      We still like to call them internally
 181  *      "static inline" makes them more like macro's
 182  */
 183 static inline BOOL      EDIT_EM_CanUndo(EDITSTATE *es);
 184 static inline void      EDIT_EM_EmptyUndoBuffer(EDITSTATE *es);
 185 static inline void      EDIT_WM_Clear(HWND hwnd, EDITSTATE *es);
 186 static inline void      EDIT_WM_Cut(HWND hwnd, EDITSTATE *es);
 187
 188 /*
 189  *      Helper functions only valid for one type of control
 190  */
 191 static void     EDIT_BuildLineDefs_ML(HWND hwnd, EDITSTATE *es, INT iStart, INT iEnd, INT delta, HRGN hrgn);
 192 static void     EDIT_CalcLineWidth_SL(HWND hwnd, EDITSTATE *es);
 193 static LPWSTR   EDIT_GetPasswordPointer_SL(EDITSTATE *es);
 194 static void     EDIT_MoveDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
 195 static void     EDIT_MovePageDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
 196 static void     EDIT_MovePageUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
 197 static void     EDIT_MoveUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
 198 /*
 199  *      Helper functions valid for both single line _and_ multi line controls
 200  */
 201 static INT      EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action);
 202 static INT      EDIT_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y, LPBOOL after_wrap);
 203 static void     EDIT_ConfinePoint(EDITSTATE *es, LPINT x, LPINT y);
 204 static void     EDIT_GetLineRect(HWND hwnd, EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc);
 205 static void     EDIT_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end);
 206 static void     EDIT_LockBuffer(HWND hwnd, EDITSTATE *es);
 207 static BOOL     EDIT_MakeFit(HWND hwnd, EDITSTATE *es, UINT size);
 208 static BOOL     EDIT_MakeUndoFit(EDITSTATE *es, UINT size);
 209 static void     EDIT_MoveBackward(HWND hwnd, EDITSTATE *es, BOOL extend);
 210 static void     EDIT_MoveEnd(HWND hwnd, EDITSTATE *es, BOOL extend);
 211 static void     EDIT_MoveForward(HWND hwnd, EDITSTATE *es, BOOL extend);
 212 static void     EDIT_MoveHome(HWND hwnd, EDITSTATE *es, BOOL extend);
 213 static void     EDIT_MoveWordBackward(HWND hwnd, EDITSTATE *es, BOOL extend);
 214 static void     EDIT_MoveWordForward(HWND hwnd, EDITSTATE *es, BOOL extend);
 215 static void     EDIT_PaintLine(HWND hwnd, EDITSTATE *es, HDC hdc, INT line, BOOL rev);
 216 static INT      EDIT_PaintText(EDITSTATE *es, HDC hdc, INT x, INT y, INT line, INT col, INT count, BOOL rev);
 217 static void     EDIT_SetCaretPos(HWND hwnd, EDITSTATE *es, INT pos, BOOL after_wrap);
 218 static void     EDIT_SetRectNP(HWND hwnd, EDITSTATE *es, LPRECT lprc);
 219 static void     EDIT_UnlockBuffer(HWND hwnd, EDITSTATE *es, BOOL force);
 220 static void     EDIT_UpdateScrollInfo(HWND hwnd, EDITSTATE *es);
 221 static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action);
 222 /*
 223  *      EM_XXX message handlers
 224  */
 225 static LRESULT  EDIT_EM_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y);
 226 static BOOL     EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol);
 227 static HLOCAL   EDIT_EM_GetHandle(EDITSTATE *es);
 228 static HLOCAL16 EDIT_EM_GetHandle16(HWND hwnd, EDITSTATE *es);
 229 static INT      EDIT_EM_GetLine(EDITSTATE *es, INT line, LPARAM lParam, BOOL unicode);
 230 static LRESULT  EDIT_EM_GetSel(EDITSTATE *es, LPUINT start, LPUINT end);
 231 static LRESULT  EDIT_EM_GetThumb(HWND hwnd, EDITSTATE *es);
 232 static INT      EDIT_EM_LineFromChar(EDITSTATE *es, INT index);
 233 static INT      EDIT_EM_LineIndex(EDITSTATE *es, INT line);
 234 static INT      EDIT_EM_LineLength(EDITSTATE *es, INT index);
 235 static BOOL     EDIT_EM_LineScroll(HWND hwnd, EDITSTATE *es, INT dx, INT dy);
 236 static BOOL     EDIT_EM_LineScroll_internal(HWND hwnd, EDITSTATE *es, INT dx, INT dy);
 237 static LRESULT  EDIT_EM_PosFromChar(HWND hwnd, EDITSTATE *es, INT index, BOOL after_wrap);
 238 static void     EDIT_EM_ReplaceSel(HWND hwnd, EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update);
 239 static LRESULT  EDIT_EM_Scroll(HWND hwnd, EDITSTATE *es, INT action);
 240 static void     EDIT_EM_ScrollCaret(HWND hwnd, EDITSTATE *es);
 241 static void     EDIT_EM_SetHandle(HWND hwnd, EDITSTATE *es, HLOCAL hloc);
 242 static void     EDIT_EM_SetHandle16(HWND hwnd, EDITSTATE *es, HLOCAL16 hloc);
 243 static void     EDIT_EM_SetLimitText(EDITSTATE *es, INT limit);
 244 static void     EDIT_EM_SetMargins(EDITSTATE *es, INT action, INT left, INT right);
 245 static void     EDIT_EM_SetPasswordChar(HWND hwnd, EDITSTATE *es, WCHAR c);
 246 static void     EDIT_EM_SetSel(HWND hwnd, EDITSTATE *es, UINT start, UINT end, BOOL after_wrap);
 247 static BOOL     EDIT_EM_SetTabStops(EDITSTATE *es, INT count, LPINT tabs);
 248 static BOOL     EDIT_EM_SetTabStops16(EDITSTATE *es, INT count, LPINT16 tabs);
 249 static void     EDIT_EM_SetWordBreakProc(HWND hwnd, EDITSTATE *es, LPARAM lParam);
 250 static void     EDIT_EM_SetWordBreakProc16(HWND hwnd, EDITSTATE *es, EDITWORDBREAKPROC16 wbp);
 251 static BOOL     EDIT_EM_Undo(HWND hwnd, EDITSTATE *es);
 252 /*
 253  *      WM_XXX message handlers
 254  */
 255 static void     EDIT_WM_Char(HWND hwnd, EDITSTATE *es, WCHAR c);
 256 static void     EDIT_WM_Command(HWND hwnd, EDITSTATE *es, INT code, INT id, HWND conrtol);
 257 static void     EDIT_WM_ContextMenu(HWND hwnd, EDITSTATE *es, INT x, INT y);
 258 static void     EDIT_WM_Copy(HWND hwnd, EDITSTATE *es);
 259 static LRESULT  EDIT_WM_Create(HWND hwnd, EDITSTATE *es, LPCWSTR name);
 260 static void     EDIT_WM_Destroy(HWND hwnd, EDITSTATE *es);
 261 static LRESULT  EDIT_WM_EraseBkGnd(HWND hwnd, EDITSTATE *es, HDC dc);
 262 static INT      EDIT_WM_GetText(EDITSTATE *es, INT count, LPARAM lParam, BOOL unicode);
 263 static LRESULT  EDIT_WM_HScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos);
 264 static LRESULT  EDIT_WM_KeyDown(HWND hwnd, EDITSTATE *es, INT key);
 265 static LRESULT  EDIT_WM_KillFocus(HWND hwnd, EDITSTATE *es);
 266 static LRESULT  EDIT_WM_LButtonDblClk(HWND hwnd, EDITSTATE *es);
 267 static LRESULT  EDIT_WM_LButtonDown(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y);
 268 static LRESULT  EDIT_WM_LButtonUp(HWND hwndSelf, EDITSTATE *es);
 269 static LRESULT  EDIT_WM_MButtonDown(HWND hwnd);
 270 static LRESULT  EDIT_WM_MouseMove(HWND hwnd, EDITSTATE *es, INT x, INT y);
 271 static LRESULT  EDIT_WM_NCCreate(HWND hwnd, DWORD style, HWND hwndParent, BOOL unicode);
 272 static void     EDIT_WM_Paint(HWND hwnd, EDITSTATE *es, WPARAM wParam);
 273 static void     EDIT_WM_Paste(HWND hwnd, EDITSTATE *es);
 274 static void     EDIT_WM_SetFocus(HWND hwnd, EDITSTATE *es);
 275 static void     EDIT_WM_SetFont(HWND hwnd, EDITSTATE *es, HFONT font, BOOL redraw);
 276 static void     EDIT_WM_SetText(HWND hwnd, EDITSTATE *es, LPARAM lParam, BOOL unicode);
 277 static void     EDIT_WM_Size(HWND hwnd, EDITSTATE *es, UINT action, INT width, INT height);
 278 static LRESULT  EDIT_WM_StyleChanged (HWND hwnd, EDITSTATE *es, WPARAM which, const STYLESTRUCT *style);
 279 static LRESULT  EDIT_WM_SysKeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data);
 280 static void     EDIT_WM_Timer(HWND hwnd, EDITSTATE *es);
 281 static LRESULT  EDIT_WM_VScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos);
 282 static void EDIT_UpdateText(HWND hwnd, EDITSTATE *es, LPRECT rc, BOOL bErase);
 283 static void EDIT_UpdateTextRegion(HWND hwnd, EDITSTATE *es, HRGN hrgn, BOOL bErase);
 284
 285 LRESULT WINAPI EditWndProcA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 286 LRESULT WINAPI EditWndProcW(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 287
 288 /*********************************************************************
 289  * edit class descriptor
 290  */
 291 const struct builtin_class_descr EDIT_builtin_class =
 292 {
 293     "Edit",               /* name */
 294     CS_GLOBALCLASS | CS_DBLCLKS | CS_PARENTDC,   /* style */
 295     EditWndProcA,         /* procA */
 296     EditWndProcW,         /* procW */
 297     sizeof(EDITSTATE *),  /* extra */
 298     IDC_IBEAMA,           /* cursor */
 299     0                     /* brush */
 300 };
 301
 302
 303 /*********************************************************************
 304  *
 305  *      EM_CANUNDO
 306  *
 307  */
 308 static inline BOOL EDIT_EM_CanUndo(EDITSTATE *es)
 309 {
 310         return (es->undo_insert_count || strlenW(es->undo_text));
 311 }
 312
 313
 314 /*********************************************************************
 315  *
 316  *      EM_EMPTYUNDOBUFFER
 317  *
 318  */
 319 static inline void EDIT_EM_EmptyUndoBuffer(EDITSTATE *es)
 320 {
 321         es->undo_insert_count = 0;
 322         *es->undo_text = '\0';
 323 }
 324
 325
 326 /*********************************************************************
 327  *
 328  *      WM_CLEAR
 329  *
 330  */
 331 static inline void EDIT_WM_Clear(HWND hwnd, EDITSTATE *es)
 332 {
 333         static const WCHAR empty_stringW[] = {0};
 334
 335         /* Protect read-only edit control from modification */
 336         if(es->style & ES_READONLY)
 337             return;
 338
 339         EDIT_EM_ReplaceSel(hwnd, es, TRUE, empty_stringW, TRUE);
 340 }
 341
 342
 343 /*********************************************************************
 344  *
 345  *      WM_CUT
 346  *
 347  */
 348 static inline void EDIT_WM_Cut(HWND hwnd, EDITSTATE *es)
 349 {
 350         EDIT_WM_Copy(hwnd, es);
 351         EDIT_WM_Clear(hwnd, es);
 352 }
 353
 354
 355 /**********************************************************************
 356  *         get_app_version
 357  *
 358  * Returns the window version in case Wine emulates a later version
 359  * of windows then the application expects.
 360  *
 361  * In a number of cases when windows runs an application that was
 362  * designed for an earlier windows version, windows reverts
 363  * to "old" behaviour of that earlier version.
 364  *
 365  * An example is a disabled  edit control that needs to be painted.
 366  * Old style behaviour is to send a WM_CTLCOLOREDIT message. This was
 367  * changed in Win95, NT4.0 by a WM_CTLCOLORSTATIC message _only_ for
 368  * applications with an expected version 0f 4.0 or higher.
 369  *
 370  */
 371 static DWORD get_app_version(void)
 372 {
 373     static DWORD version;
 374     if (!version)
 375     {
 376         DWORD dwEmulatedVersion;
 377         OSVERSIONINFOW info;
 378         DWORD dwProcVersion = GetProcessVersion(0);
 379
 380         info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
 381         GetVersionExW( &info );
 382         dwEmulatedVersion = MAKELONG( info.dwMinorVersion, info.dwMajorVersion );
 383         /* FIXME: this may not be 100% correct; see discussion on the
 384          * wine developer list in Nov 1999 */
 385         version = dwProcVersion < dwEmulatedVersion ? dwProcVersion : dwEmulatedVersion;
 386     }
 387     return version;
 388 }
 389
 390
 391 /*********************************************************************
 392  *
 393  *      EditWndProc_common
 394  *
 395  *      The messages are in the order of the actual integer values
 396  *      (which can be found in include/windows.h)
 397  *      Wherever possible the 16 bit versions are converted to
 398  *      the 32 bit ones, so that we can 'fall through' to the
 399  *      helper functions.  These are mostly 32 bit (with a few
 400  *      exceptions, clearly indicated by a '16' extension to their
 401  *      names).
 402  *
 403  */
 404 static LRESULT WINAPI EditWndProc_common( HWND hwnd, UINT msg,
 405                                           WPARAM wParam, LPARAM lParam, BOOL unicode )
 406 {
 407         EDITSTATE *es = (EDITSTATE *)GetWindowLongA( hwnd, 0 );
 408         LRESULT result = 0;
 409
 410         switch (msg) {
 411         case WM_DESTROY:
 412                 DPRINTF_EDIT_MSG32("WM_DESTROY");
 413                 if (es) EDIT_WM_Destroy(hwnd, es);
 414                 result = 0;
 415                 goto END;
 416
 417         case WM_NCCREATE:
 418                 DPRINTF_EDIT_MSG32("WM_NCCREATE");
 419                 if(unicode)
 420                 {
 421                     LPCREATESTRUCTW cs = (LPCREATESTRUCTW)lParam;
 422                     result = EDIT_WM_NCCreate(hwnd, cs->style, cs->hwndParent, TRUE);
 423                 }
 424                 else
 425                 {
 426                     LPCREATESTRUCTA cs = (LPCREATESTRUCTA)lParam;
 427                     result = EDIT_WM_NCCreate(hwnd, cs->style, cs->hwndParent, FALSE);
 428                 }
 429                 goto END;
 430         }
 431
 432         if (!es)
 433         {
 434             if(unicode)
 435                 result = DefWindowProcW(hwnd, msg, wParam, lParam);
 436             else
 437                 result = DefWindowProcA(hwnd, msg, wParam, lParam);
 438             goto END;
 439         }
 440
 441
 442         EDIT_LockBuffer(hwnd, es);
 443         switch (msg) {
 444         case EM_GETSEL16:
 445                 DPRINTF_EDIT_MSG16("EM_GETSEL");
 446                 wParam = 0;
 447                 lParam = 0;
 448                 /* fall through */
 449         case EM_GETSEL:
 450                 DPRINTF_EDIT_MSG32("EM_GETSEL");
 451                 result = EDIT_EM_GetSel(es, (LPUINT)wParam, (LPUINT)lParam);
 452                 break;
 453
 454         case EM_SETSEL16:
 455                 DPRINTF_EDIT_MSG16("EM_SETSEL");
 456                 if (SLOWORD(lParam) == -1)
 457                         EDIT_EM_SetSel(hwnd, es, (UINT)-1, 0, FALSE);
 458                 else
 459                         EDIT_EM_SetSel(hwnd, es, LOWORD(lParam), HIWORD(lParam), FALSE);
 460                 if (!wParam)
 461                         EDIT_EM_ScrollCaret(hwnd, es);
 462                 result = 1;
 463                 break;
 464         case EM_SETSEL:
 465                 DPRINTF_EDIT_MSG32("EM_SETSEL");
 466                 EDIT_EM_SetSel(hwnd, es, wParam, lParam, FALSE);
 467                 EDIT_EM_ScrollCaret(hwnd, es);
 468                 result = 1;
 469                 break;
 470
 471         case EM_GETRECT16:
 472                 DPRINTF_EDIT_MSG16("EM_GETRECT");
 473                 if (lParam)
 474                         CONV_RECT32TO16(&es->format_rect, MapSL(lParam));
 475                 break;
 476         case EM_GETRECT:
 477                 DPRINTF_EDIT_MSG32("EM_GETRECT");
 478                 if (lParam)
 479                         CopyRect((LPRECT)lParam, &es->format_rect);
 480                 break;
 481
 482         case EM_SETRECT16:
 483                 DPRINTF_EDIT_MSG16("EM_SETRECT");
 484                 if ((es->style & ES_MULTILINE) && lParam) {
 485                         RECT rc;
 486                         CONV_RECT16TO32(MapSL(lParam), &rc);
 487                         EDIT_SetRectNP(hwnd, es, &rc);
 488                         EDIT_UpdateText(hwnd, es, NULL, TRUE);
 489                 }
 490                 break;
 491         case EM_SETRECT:
 492                 DPRINTF_EDIT_MSG32("EM_SETRECT");
 493                 if ((es->style & ES_MULTILINE) && lParam) {
 494                         EDIT_SetRectNP(hwnd, es, (LPRECT)lParam);
 495                         EDIT_UpdateText(hwnd, es, NULL, TRUE);
 496                 }
 497                 break;
 498
 499         case EM_SETRECTNP16:
 500                 DPRINTF_EDIT_MSG16("EM_SETRECTNP");
 501                 if ((es->style & ES_MULTILINE) && lParam) {
 502                         RECT rc;
 503                         CONV_RECT16TO32(MapSL(lParam), &rc);
 504                         EDIT_SetRectNP(hwnd, es, &rc);
 505                 }
 506                 break;
 507         case EM_SETRECTNP:
 508                 DPRINTF_EDIT_MSG32("EM_SETRECTNP");
 509                 if ((es->style & ES_MULTILINE) && lParam)
 510                         EDIT_SetRectNP(hwnd, es, (LPRECT)lParam);
 511                 break;
 512
 513         case EM_SCROLL16:
 514                 DPRINTF_EDIT_MSG16("EM_SCROLL");
 515                 /* fall through */
 516         case EM_SCROLL:
 517                 DPRINTF_EDIT_MSG32("EM_SCROLL");
 518                 result = EDIT_EM_Scroll(hwnd, es, (INT)wParam);
 519                 break;
 520
 521         case EM_LINESCROLL16:
 522                 DPRINTF_EDIT_MSG16("EM_LINESCROLL");
 523                 wParam = (WPARAM)(INT)SHIWORD(lParam);
 524                 lParam = (LPARAM)(INT)SLOWORD(lParam);
 525                 /* fall through */
 526         case EM_LINESCROLL:
 527                 DPRINTF_EDIT_MSG32("EM_LINESCROLL");
 528                 result = (LRESULT)EDIT_EM_LineScroll(hwnd, es, (INT)wParam, (INT)lParam);
 529                 break;
 530
 531         case EM_SCROLLCARET16:
 532                 DPRINTF_EDIT_MSG16("EM_SCROLLCARET");
 533                 /* fall through */
 534         case EM_SCROLLCARET:
 535                 DPRINTF_EDIT_MSG32("EM_SCROLLCARET");
 536                 EDIT_EM_ScrollCaret(hwnd, es);
 537                 result = 1;
 538                 break;
 539
 540         case EM_GETMODIFY16:
 541                 DPRINTF_EDIT_MSG16("EM_GETMODIFY");
 542                 /* fall through */
 543         case EM_GETMODIFY:
 544                 DPRINTF_EDIT_MSG32("EM_GETMODIFY");
 545                 result = ((es->flags & EF_MODIFIED) != 0);
 546                 break;
 547
 548         case EM_SETMODIFY16:
 549                 DPRINTF_EDIT_MSG16("EM_SETMODIFY");
 550                 /* fall through */
 551         case EM_SETMODIFY:
 552                 DPRINTF_EDIT_MSG32("EM_SETMODIFY");
 553                 if (wParam)
 554                         es->flags |= EF_MODIFIED;
 555                 else
 556                         es->flags &= ~(EF_MODIFIED | EF_UPDATE);  /* reset pending updates */
 557                 break;
 558
 559         case EM_GETLINECOUNT16:
 560                 DPRINTF_EDIT_MSG16("EM_GETLINECOUNT");
 561                 /* fall through */
 562         case EM_GETLINECOUNT:
 563                 DPRINTF_EDIT_MSG32("EM_GETLINECOUNT");
 564                 result = (es->style & ES_MULTILINE) ? es->line_count : 1;
 565                 break;
 566
 567         case EM_LINEINDEX16:
 568                 DPRINTF_EDIT_MSG16("EM_LINEINDEX");
 569                 if ((INT16)wParam == -1)
 570                         wParam = (WPARAM)-1;
 571                 /* fall through */
 572         case EM_LINEINDEX:
 573                 DPRINTF_EDIT_MSG32("EM_LINEINDEX");
 574                 result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
 575                 break;
 576
 577         case EM_SETHANDLE16:
 578                 DPRINTF_EDIT_MSG16("EM_SETHANDLE");
 579                 EDIT_EM_SetHandle16(hwnd, es, (HLOCAL16)wParam);
 580                 break;
 581         case EM_SETHANDLE:
 582                 DPRINTF_EDIT_MSG32("EM_SETHANDLE");
 583                 EDIT_EM_SetHandle(hwnd, es, (HLOCAL)wParam);
 584                 break;
 585
 586         case EM_GETHANDLE16:
 587                 DPRINTF_EDIT_MSG16("EM_GETHANDLE");
 588                 result = (LRESULT)EDIT_EM_GetHandle16(hwnd, es);
 589                 break;
 590         case EM_GETHANDLE:
 591                 DPRINTF_EDIT_MSG32("EM_GETHANDLE");
 592                 result = (LRESULT)EDIT_EM_GetHandle(es);
 593                 break;
 594
 595         case EM_GETTHUMB16:
 596                 DPRINTF_EDIT_MSG16("EM_GETTHUMB");
 597                 /* fall through */
 598         case EM_GETTHUMB:
 599                 DPRINTF_EDIT_MSG32("EM_GETTHUMB");
 600                 result = EDIT_EM_GetThumb(hwnd, es);
 601                 break;
 602
 603         /* messages 0x00bf and 0x00c0 missing from specs */
 604
 605         case WM_USER+15:
 606                 DPRINTF_EDIT_MSG16("undocumented WM_USER+15, please report");
 607                 /* fall through */
 608         case 0x00bf:
 609                 DPRINTF_EDIT_MSG32("undocumented 0x00bf, please report");
 610                 result = DefWindowProcW(hwnd, msg, wParam, lParam);
 611                 break;
 612
 613         case WM_USER+16:
 614                 DPRINTF_EDIT_MSG16("undocumented WM_USER+16, please report");
 615                 /* fall through */
 616         case 0x00c0:
 617                 DPRINTF_EDIT_MSG32("undocumented 0x00c0, please report");
 618                 result = DefWindowProcW(hwnd, msg, wParam, lParam);
 619                 break;
 620
 621         case EM_LINELENGTH16:
 622                 DPRINTF_EDIT_MSG16("EM_LINELENGTH");
 623                 /* fall through */
 624         case EM_LINELENGTH:
 625                 DPRINTF_EDIT_MSG32("EM_LINELENGTH");
 626                 result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
 627                 break;
 628
 629         case EM_REPLACESEL16:
 630                 DPRINTF_EDIT_MSG16("EM_REPLACESEL");
 631                 lParam = (LPARAM)MapSL(lParam);
 632                 unicode = FALSE;  /* 16-bit message is always ascii */
 633                 /* fall through */
 634         case EM_REPLACESEL:
 635         {
 636                 LPWSTR textW;
 637                 DPRINTF_EDIT_MSG32("EM_REPLACESEL");
 638
 639                 if(unicode)
 640                     textW = (LPWSTR)lParam;
 641                 else
 642                 {
 643                     LPSTR textA = (LPSTR)lParam;
 644                     INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
 645                     if((textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
 646                         MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
 647                 }
 648
 649                 EDIT_EM_ReplaceSel(hwnd, es, (BOOL)wParam, textW, TRUE);
 650                 result = 1;
 651
 652                 if(!unicode)
 653                     HeapFree(GetProcessHeap(), 0, textW);
 654                 break;
 655         }
 656         /* message 0x00c3 missing from specs */
 657
 658         case WM_USER+19:
 659                 DPRINTF_EDIT_MSG16("undocumented WM_USER+19, please report");
 660                 /* fall through */
 661         case 0x00c3:
 662                 DPRINTF_EDIT_MSG32("undocumented 0x00c3, please report");
 663                 result = DefWindowProcW(hwnd, msg, wParam, lParam);
 664                 break;
 665
 666         case EM_GETLINE16:
 667                 DPRINTF_EDIT_MSG16("EM_GETLINE");
 668                 lParam = (LPARAM)MapSL(lParam);
 669                 unicode = FALSE;  /* 16-bit message is always ascii */
 670                 /* fall through */
 671         case EM_GETLINE:
 672                 DPRINTF_EDIT_MSG32("EM_GETLINE");
 673                 result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, lParam, unicode);
 674                 break;
 675
 676         case EM_LIMITTEXT16:
 677                 DPRINTF_EDIT_MSG16("EM_LIMITTEXT");
 678                 /* fall through */
 679         case EM_SETLIMITTEXT:
 680                 DPRINTF_EDIT_MSG32("EM_SETLIMITTEXT");
 681                 EDIT_EM_SetLimitText(es, (INT)wParam);
 682                 break;
 683
 684         case EM_CANUNDO16:
 685                 DPRINTF_EDIT_MSG16("EM_CANUNDO");
 686                 /* fall through */
 687         case EM_CANUNDO:
 688                 DPRINTF_EDIT_MSG32("EM_CANUNDO");
 689                 result = (LRESULT)EDIT_EM_CanUndo(es);
 690                 break;
 691
 692         case EM_UNDO16:
 693                 DPRINTF_EDIT_MSG16("EM_UNDO");
 694                 /* fall through */
 695         case EM_UNDO:
 696                 /* fall through */
 697         case WM_UNDO:
 698                 DPRINTF_EDIT_MSG32("EM_UNDO / WM_UNDO");
 699                 result = (LRESULT)EDIT_EM_Undo(hwnd, es);
 700                 break;
 701
 702         case EM_FMTLINES16:
 703                 DPRINTF_EDIT_MSG16("EM_FMTLINES");
 704                 /* fall through */
 705         case EM_FMTLINES:
 706                 DPRINTF_EDIT_MSG32("EM_FMTLINES");
 707                 result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
 708                 break;
 709
 710         case EM_LINEFROMCHAR16:
 711                 DPRINTF_EDIT_MSG16("EM_LINEFROMCHAR");
 712                 /* fall through */
 713         case EM_LINEFROMCHAR:
 714                 DPRINTF_EDIT_MSG32("EM_LINEFROMCHAR");
 715                 result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
 716                 break;
 717
 718         /* message 0x00ca missing from specs */
 719
 720         case WM_USER+26:
 721                 DPRINTF_EDIT_MSG16("undocumented WM_USER+26, please report");
 722                 /* fall through */
 723         case 0x00ca:
 724                 DPRINTF_EDIT_MSG32("undocumented 0x00ca, please report");
 725                 result = DefWindowProcW(hwnd, msg, wParam, lParam);
 726                 break;
 727
 728         case EM_SETTABSTOPS16:
 729                 DPRINTF_EDIT_MSG16("EM_SETTABSTOPS");
 730                 result = (LRESULT)EDIT_EM_SetTabStops16(es, (INT)wParam, MapSL(lParam));
 731                 break;
 732         case EM_SETTABSTOPS:
 733                 DPRINTF_EDIT_MSG32("EM_SETTABSTOPS");
 734                 result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
 735                 break;
 736
 737         case EM_SETPASSWORDCHAR16:
 738                 DPRINTF_EDIT_MSG16("EM_SETPASSWORDCHAR");
 739                 unicode = FALSE;  /* 16-bit message is always ascii */
 740                 /* fall through */
 741         case EM_SETPASSWORDCHAR:
 742         {
 743                 WCHAR charW = 0;
 744                 DPRINTF_EDIT_MSG32("EM_SETPASSWORDCHAR");
 745
 746                 if(unicode)
 747                     charW = (WCHAR)wParam;
 748                 else
 749                 {
 750                     CHAR charA = wParam;
 751                     MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
 752                 }
 753
 754                 EDIT_EM_SetPasswordChar(hwnd, es, charW);
 755                 break;
 756         }
 757
 758         case EM_EMPTYUNDOBUFFER16:
 759                 DPRINTF_EDIT_MSG16("EM_EMPTYUNDOBUFFER");
 760                 /* fall through */
 761         case EM_EMPTYUNDOBUFFER:
 762                 DPRINTF_EDIT_MSG32("EM_EMPTYUNDOBUFFER");
 763                 EDIT_EM_EmptyUndoBuffer(es);
 764                 break;
 765
 766         case EM_GETFIRSTVISIBLELINE16:
 767                 DPRINTF_EDIT_MSG16("EM_GETFIRSTVISIBLELINE");
 768                 result = es->y_offset;
 769                 break;
 770         case EM_GETFIRSTVISIBLELINE:
 771                 DPRINTF_EDIT_MSG32("EM_GETFIRSTVISIBLELINE");
 772                 result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
 773                 break;
 774
 775         case EM_SETREADONLY16:
 776                 DPRINTF_EDIT_MSG16("EM_SETREADONLY");
 777                 /* fall through */
 778         case EM_SETREADONLY:
 779                 DPRINTF_EDIT_MSG32("EM_SETREADONLY");
 780                 if (wParam) {
 781                     SetWindowLongA( hwnd, GWL_STYLE,
 782                                     GetWindowLongA( hwnd, GWL_STYLE ) | ES_READONLY );
 783                     es->style |= ES_READONLY;
 784                 } else {
 785                     SetWindowLongA( hwnd, GWL_STYLE,
 786                                     GetWindowLongA( hwnd, GWL_STYLE ) & ~ES_READONLY );
 787                     es->style &= ~ES_READONLY;
 788                 }
 789                 result = 1;
 790                 break;
 791
 792         case EM_SETWORDBREAKPROC16:
 793                 DPRINTF_EDIT_MSG16("EM_SETWORDBREAKPROC");
 794                 EDIT_EM_SetWordBreakProc16(hwnd, es, (EDITWORDBREAKPROC16)lParam);
 795                 break;
 796         case EM_SETWORDBREAKPROC:
 797                 DPRINTF_EDIT_MSG32("EM_SETWORDBREAKPROC");
 798                 EDIT_EM_SetWordBreakProc(hwnd, es, lParam);
 799                 break;
 800
 801         case EM_GETWORDBREAKPROC16:
 802                 DPRINTF_EDIT_MSG16("EM_GETWORDBREAKPROC");
 803                 result = (LRESULT)es->word_break_proc16;
 804                 break;
 805         case EM_GETWORDBREAKPROC:
 806                 DPRINTF_EDIT_MSG32("EM_GETWORDBREAKPROC");
 807                 result = (LRESULT)es->word_break_proc;
 808                 break;
 809
 810         case EM_GETPASSWORDCHAR16:
 811                 DPRINTF_EDIT_MSG16("EM_GETPASSWORDCHAR");
 812                 unicode = FALSE;  /* 16-bit message is always ascii */
 813                 /* fall through */
 814         case EM_GETPASSWORDCHAR:
 815         {
 816                 DPRINTF_EDIT_MSG32("EM_GETPASSWORDCHAR");
 817
 818                 if(unicode)
 819                     result = es->password_char;
 820                 else
 821                 {
 822                     WCHAR charW = es->password_char;
 823                     CHAR charA = 0;
 824                     WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
 825                     result = charA;
 826                 }
 827                 break;
 828         }
 829
 830         /* The following EM_xxx are new to win95 and don't exist for 16 bit */
 831
 832         case EM_SETMARGINS:
 833                 DPRINTF_EDIT_MSG32("EM_SETMARGINS");
 834                 EDIT_EM_SetMargins(es, (INT)wParam, SLOWORD(lParam), SHIWORD(lParam));
 835                 break;
 836
 837         case EM_GETMARGINS:
 838                 DPRINTF_EDIT_MSG32("EM_GETMARGINS");
 839                 result = MAKELONG(es->left_margin, es->right_margin);
 840                 break;
 841
 842         case EM_GETLIMITTEXT:
 843                 DPRINTF_EDIT_MSG32("EM_GETLIMITTEXT");
 844                 result = es->buffer_limit;
 845                 break;
 846
 847         case EM_POSFROMCHAR:
 848                 DPRINTF_EDIT_MSG32("EM_POSFROMCHAR");
 849                 result = EDIT_EM_PosFromChar(hwnd, es, (INT)wParam, FALSE);
 850                 break;
 851
 852         case EM_CHARFROMPOS:
 853                 DPRINTF_EDIT_MSG32("EM_CHARFROMPOS");
 854                 result = EDIT_EM_CharFromPos(hwnd, es, SLOWORD(lParam), SHIWORD(lParam));
 855                 break;
 856
 857         /* End of the EM_ messages which were in numerical order; what order
 858          * are these in?  vaguely alphabetical?
 859          */
 860
 861         case WM_GETDLGCODE:
 862                 DPRINTF_EDIT_MSG32("WM_GETDLGCODE");
 863                 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
 864
 865                 if (lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
 866                 {
 867                    int vk = (int)((LPMSG)lParam)->wParam;
 868
 869                    if (vk == VK_RETURN && (GetWindowLongA( hwnd, GWL_STYLE ) & ES_WANTRETURN))
 870                    {
 871                       result |= DLGC_WANTMESSAGE;
 872                    }
 873                    else if (es->hwndListBox && (vk == VK_RETURN || vk == VK_ESCAPE))
 874                    {
 875                       if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
 876                          result |= DLGC_WANTMESSAGE;
 877                    }
 878                 }
 879                 break;
 880
 881         case WM_CHAR:
 882         {
 883                 WCHAR charW;
 884                 DPRINTF_EDIT_MSG32("WM_CHAR");
 885
 886                 if(unicode)
 887                     charW = wParam;
 888                 else
 889                 {
 890                     CHAR charA = wParam;
 891                     MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
 892                 }
 893
 894                 if ((charW == VK_RETURN || charW == VK_ESCAPE) && es->hwndListBox)
 895                 {
 896                    if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
 897                       SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
 898                    break;
 899                 }
 900                 EDIT_WM_Char(hwnd, es, charW);
 901                 break;
 902         }
 903
 904         case WM_CLEAR:
 905                 DPRINTF_EDIT_MSG32("WM_CLEAR");
 906                 EDIT_WM_Clear(hwnd, es);
 907                 break;
 908
 909         case WM_COMMAND:
 910                 DPRINTF_EDIT_MSG32("WM_COMMAND");
 911                 EDIT_WM_Command(hwnd, es, HIWORD(wParam), LOWORD(wParam), (HWND)lParam);
 912                 break;
 913
 914         case WM_CONTEXTMENU:
 915                 DPRINTF_EDIT_MSG32("WM_CONTEXTMENU");
 916                 EDIT_WM_ContextMenu(hwnd, es, SLOWORD(lParam), SHIWORD(lParam));
 917                 break;
 918
 919         case WM_COPY:
 920                 DPRINTF_EDIT_MSG32("WM_COPY");
 921                 EDIT_WM_Copy(hwnd, es);
 922                 break;
 923
 924         case WM_CREATE:
 925                 DPRINTF_EDIT_MSG32("WM_CREATE");
 926                 if(unicode)
 927                     result = EDIT_WM_Create(hwnd, es, ((LPCREATESTRUCTW)lParam)->lpszName);
 928                 else
 929                 {
 930                     LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
 931                     LPWSTR nameW = NULL;
 932                     if(nameA)
 933                     {
 934                         INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
 935                         if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
 936                             MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
 937                     }
 938                     result = EDIT_WM_Create(hwnd, es, nameW);
 939                     if(nameW)
 940                         HeapFree(GetProcessHeap(), 0, nameW);
 941                 }
 942                 break;
 943
 944         case WM_CUT:
 945                 DPRINTF_EDIT_MSG32("WM_CUT");
 946                 EDIT_WM_Cut(hwnd, es);
 947                 break;
 948
 949         case WM_ENABLE:
 950                 DPRINTF_EDIT_MSG32("WM_ENABLE");
 951                 es->bEnableState = (BOOL) wParam;
 952                 EDIT_UpdateText(hwnd, es, NULL, TRUE);
 953                 break;
 954
 955         case WM_ERASEBKGND:
 956                 DPRINTF_EDIT_MSG32("WM_ERASEBKGND");
 957                 result = EDIT_WM_EraseBkGnd(hwnd, es, (HDC)wParam);
 958                 break;
 959
 960         case WM_GETFONT:
 961                 DPRINTF_EDIT_MSG32("WM_GETFONT");
 962                 result = (LRESULT)es->font;
 963                 break;
 964
 965         case WM_GETTEXT:
 966                 DPRINTF_EDIT_MSG32("WM_GETTEXT");
 967                 result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, lParam, unicode);
 968                 break;
 969
 970         case WM_GETTEXTLENGTH:
 971                 DPRINTF_EDIT_MSG32("WM_GETTEXTLENGTH");
 972                 if (unicode) result = strlenW(es->text);
 973                 else result = WideCharToMultiByte( CP_ACP, 0, es->text, strlenW(es->text),
 974                                                    NULL, 0, NULL, NULL );
 975                 break;
 976
 977         case WM_HSCROLL:
 978                 DPRINTF_EDIT_MSG32("WM_HSCROLL");
 979                 result = EDIT_WM_HScroll(hwnd, es, LOWORD(wParam), SHIWORD(wParam));
 980                 break;
 981
 982         case WM_KEYDOWN:
 983                 DPRINTF_EDIT_MSG32("WM_KEYDOWN");
 984                 result = EDIT_WM_KeyDown(hwnd, es, (INT)wParam);
 985                 break;
 986
 987         case WM_KILLFOCUS:
 988                 DPRINTF_EDIT_MSG32("WM_KILLFOCUS");
 989                 result = EDIT_WM_KillFocus(hwnd, es);
 990                 break;
 991
 992         case WM_LBUTTONDBLCLK:
 993                 DPRINTF_EDIT_MSG32("WM_LBUTTONDBLCLK");
 994                 result = EDIT_WM_LButtonDblClk(hwnd, es);
 995                 break;
 996
 997         case WM_LBUTTONDOWN:
 998                 DPRINTF_EDIT_MSG32("WM_LBUTTONDOWN");
 999                 result = EDIT_WM_LButtonDown(hwnd, es, (DWORD)wParam, SLOWORD(lParam), SHIWORD(lParam));
1000                 break;
1001
1002         case WM_LBUTTONUP:
1003                 DPRINTF_EDIT_MSG32("WM_LBUTTONUP");
1004                 result = EDIT_WM_LButtonUp(hwnd, es);
1005                 break;
1006
1007         case WM_MBUTTONDOWN:
1008                 DPRINTF_EDIT_MSG32("WM_MBUTTONDOWN");
1009                 result = EDIT_WM_MButtonDown(hwnd);
1010                 break;
1011
1012         case WM_MOUSEACTIVATE:
1013                 /*
1014                  *      FIXME: maybe DefWindowProc() screws up, but it seems that
1015                  *              modeless dialog boxes need this.  If we don't do this, the focus
1016                  *              will _not_ be set by DefWindowProc() for edit controls in a
1017                  *              modeless dialog box ???
1018                  */
1019                 DPRINTF_EDIT_MSG32("WM_MOUSEACTIVATE");
1020                 SetFocus(hwnd);
1021                 result = MA_ACTIVATE;
1022                 break;
1023
1024         case WM_MOUSEMOVE:
1025                 /*
1026                  *      DPRINTF_EDIT_MSG32("WM_MOUSEMOVE");
1027                  */
1028                 result = EDIT_WM_MouseMove(hwnd, es, SLOWORD(lParam), SHIWORD(lParam));
1029                 break;
1030
1031         case WM_PAINT:
1032                 DPRINTF_EDIT_MSG32("WM_PAINT");
1033                 EDIT_WM_Paint(hwnd, es, wParam);
1034                 break;
1035
1036         case WM_PASTE:
1037                 DPRINTF_EDIT_MSG32("WM_PASTE");
1038                 EDIT_WM_Paste(hwnd, es);
1039                 break;
1040
1041         case WM_SETFOCUS:
1042                 DPRINTF_EDIT_MSG32("WM_SETFOCUS");
1043                 EDIT_WM_SetFocus(hwnd, es);
1044                 break;
1045
1046         case WM_SETFONT:
1047                 DPRINTF_EDIT_MSG32("WM_SETFONT");
1048                 EDIT_WM_SetFont(hwnd, es, (HFONT)wParam, LOWORD(lParam) != 0);
1049                 break;
1050
1051         case WM_SETREDRAW:
1052                 /* FIXME: actually set an internal flag and behave accordingly */
1053                 break;
1054
1055         case WM_SETTEXT:
1056                 DPRINTF_EDIT_MSG32("WM_SETTEXT");
1057                 EDIT_WM_SetText(hwnd, es, lParam, unicode);
1058                 result = TRUE;
1059                 break;
1060
1061         case WM_SIZE:
1062                 DPRINTF_EDIT_MSG32("WM_SIZE");
1063                 EDIT_WM_Size(hwnd, es, (UINT)wParam, LOWORD(lParam), HIWORD(lParam));
1064                 break;
1065
1066         case WM_STYLECHANGED:
1067                 DPRINTF_EDIT_MSG32("WM_STYLECHANGED");
1068                 result = EDIT_WM_StyleChanged (hwnd, es, wParam, (const STYLESTRUCT *)lParam);
1069                 break;
1070
1071         case WM_STYLECHANGING:
1072                 DPRINTF_EDIT_MSG32("WM_STYLECHANGING");
1073                 result = 0; /* See EDIT_WM_StyleChanged */
1074                 break;
1075
1076         case WM_SYSKEYDOWN:
1077                 DPRINTF_EDIT_MSG32("WM_SYSKEYDOWN");
1078                 result = EDIT_WM_SysKeyDown(hwnd, es, (INT)wParam, (DWORD)lParam);
1079                 break;
1080
1081         case WM_TIMER:
1082                 DPRINTF_EDIT_MSG32("WM_TIMER");
1083                 EDIT_WM_Timer(hwnd, es);
1084                 break;
1085
1086         case WM_VSCROLL:
1087                 DPRINTF_EDIT_MSG32("WM_VSCROLL");
1088                 result = EDIT_WM_VScroll(hwnd, es, LOWORD(wParam), SHIWORD(wParam));
1089                 break;
1090
1091         case WM_MOUSEWHEEL:
1092                 {
1093                     int gcWheelDelta = 0;
1094                     UINT pulScrollLines = 3;
1095                     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1096
1097                     if (wParam & (MK_SHIFT | MK_CONTROL)) {
1098                         result = DefWindowProcW(hwnd, msg, wParam, lParam);
1099                         break;
1100                     }
1101                     gcWheelDelta -= SHIWORD(wParam);
1102                     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1103                     {
1104                         int cLineScroll= (int) min((UINT) es->line_count, pulScrollLines);
1105                         cLineScroll *= (gcWheelDelta / WHEEL_DELTA);
1106                         result = EDIT_EM_LineScroll(hwnd, es, 0, cLineScroll);
1107                     }
1108                 }
1109                 break;
1110         default:
1111                 if(unicode)
1112                     result = DefWindowProcW(hwnd, msg, wParam, lParam);
1113                 else
1114                     result = DefWindowProcA(hwnd, msg, wParam, lParam);
1115                 break;
1116         }
1117         EDIT_UnlockBuffer(hwnd, es, FALSE);
1118     END:
1119         return result;
1120 }
1121
1122 /*********************************************************************
1123  *
1124  *      EditWndProcW   (USER32.@)
1125  */
1126 LRESULT WINAPI EditWndProcW(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1127 {
1128     if (!IsWindow( hWnd )) return 0;
1129     return EditWndProc_common(hWnd, uMsg, wParam, lParam, TRUE);
1130 }
1131
1132 /*********************************************************************
1133  *
1134  *      EditWndProc   (USER32.@)
1135  */
1136 LRESULT WINAPI EditWndProcA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1137 {
1138     if (!IsWindow( hWnd )) return 0;
1139     return EditWndProc_common(hWnd, uMsg, wParam, lParam, FALSE);
1140 }
1141
1142 /*********************************************************************
1143  *
1144  *      EDIT_BuildLineDefs_ML
1145  *
1146  *      Build linked list of text lines.
1147  *      Lines can end with '\0' (last line), a character (if it is wrapped),
1148  *      a soft return '\r\r\n' or a hard return '\r\n'
1149  *
1150  */
1151 static void EDIT_BuildLineDefs_ML(HWND hwnd, EDITSTATE *es, INT istart, INT iend, INT delta, HRGN hrgn)
1152 {
1153         HDC dc;
1154         HFONT old_font = 0;
1155         LPWSTR current_position, cp;
1156         INT fw;
1157         LINEDEF *current_line;
1158         LINEDEF *previous_line;
1159         LINEDEF *start_line;
1160         INT line_index = 0, nstart_line = 0, nstart_index = 0;
1161         INT line_count = es->line_count;
1162         INT orig_net_length;
1163         RECT rc;
1164
1165         if (istart == iend && delta == 0)
1166                 return;
1167
1168         dc = GetDC(hwnd);
1169         if (es->font)
1170                 old_font = SelectObject(dc, es->font);
1171
1172         previous_line = NULL;
1173         current_line = es->first_line_def;
1174
1175         /* Find starting line. istart must lie inside an existing line or
1176          * at the end of buffer */
1177         do {
1178                 if (istart < current_line->index + current_line->length ||
1179                                 current_line->ending == END_0)
1180                         break;
1181
1182                 previous_line = current_line;
1183                 current_line = current_line->next;
1184                 line_index++;
1185         } while (current_line);
1186
1187         if (!current_line) /* Error occurred start is not inside previous buffer */
1188         {
1189                 FIXME(" modification occurred outside buffer\n");
1190                 return;
1191         }
1192
1193         /* Remember start of modifications in order to calculate update region */
1194         nstart_line = line_index;
1195         nstart_index = current_line->index;
1196
1197         /* We must start to reformat from the previous line since the modifications
1198          * may have caused the line to wrap upwards. */
1199         if (!(es->style & ES_AUTOHSCROLL) && line_index > 0)
1200         {
1201                 line_index--;
1202                 current_line = previous_line;
1203         }
1204         start_line = current_line;
1205
1206         fw = es->format_rect.right - es->format_rect.left;
1207         current_position = es->text + current_line->index;
1208         do {
1209                 if (current_line != start_line)
1210                 {
1211                         if (!current_line || current_line->index + delta > current_position - es->text)
1212                         {
1213                                 /* The buffer has been expanded, create a new line and
1214                                    insert it into the link list */
1215                                 LINEDEF *new_line = HeapAlloc(GetProcessHeap(), 0, sizeof(LINEDEF));
1216                                 new_line->next = previous_line->next;
1217                                 previous_line->next = new_line;
1218                                 current_line = new_line;
1219                                 es->line_count++;
1220                         }
1221                         else if (current_line->index + delta < current_position - es->text)
1222                         {
1223                                 /* The previous line merged with this line so we delete this extra entry */
1224                                 previous_line->next = current_line->next;
1225                                 HeapFree(GetProcessHeap(), 0, current_line);
1226                                 current_line = previous_line->next;
1227                                 es->line_count--;
1228                                 continue;
1229                         }
1230                         else /* current_line->index + delta == current_position */
1231                         {
1232                                 if (current_position - es->text > iend)
1233                                         break; /* We reached end of line modifications */
1234                                 /* else recalulate this line */
1235                         }
1236                 }
1237
1238                 current_line->index = current_position - es->text;
1239                 orig_net_length = current_line->net_length;
1240
1241                 /* Find end of line */
1242                 cp = current_position;
1243                 while (*cp) {
1244                     if (*cp == '\n') break;
1245                         if ((*cp == '\r') && (*(cp + 1) == '\n'))
1246                                 break;
1247                         cp++;
1248                 }
1249
1250                 /* Mark type of line termination */
1251                 if (!(*cp)) {
1252                         current_line->ending = END_0;
1253                         current_line->net_length = strlenW(current_position);
1254                 } else if ((cp > current_position) && (*(cp - 1) == '\r')) {
1255                         current_line->ending = END_SOFT;
1256                         current_line->net_length = cp - current_position - 1;
1257                 } else if (*cp == '\n') {
1258                         current_line->ending = END_RICH;
1259                         current_line->net_length = cp - current_position;
1260                 } else {
1261                         current_line->ending = END_HARD;
1262                         current_line->net_length = cp - current_position;
1263                 }
1264
1265                 /* Calculate line width */
1266                 current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
1267                                         current_position, current_line->net_length,
1268                                         es->tabs_count, es->tabs));
1269
1270                 /* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
1271                 if ((!(es->style & ES_AUTOHSCROLL)) && (current_line->width > fw)) {
1272                         INT next = 0;
1273                         INT prev;
1274                         do {
1275                                 prev = next;
1276                                 next = EDIT_CallWordBreakProc(es, current_position - es->text,
1277                                                 prev + 1, current_line->net_length, WB_RIGHT);
1278                                 current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
1279                                                         current_position, next, es->tabs_count, es->tabs));
1280                         } while (current_line->width <= fw);
1281                         if (!prev) { /* Didn't find a line break so force a break */
1282                                 next = 0;
1283                                 do {
1284                                         prev = next;
1285                                         next++;
1286                                         current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
1287                                                                 current_position, next, es->tabs_count, es->tabs));
1288                                 } while (current_line->width <= fw);
1289                                 if (!prev)
1290                                         prev = 1;
1291                         }
1292
1293                         /* If the first line we are calculating, wrapped before istart, we must
1294                          * adjust istart in order for this to be reflected in the update region. */
1295                         if (current_line->index == nstart_index && istart > current_line->index + prev)
1296                                 istart = current_line->index + prev;
1297                         /* else if we are updating the previous line before the first line we
1298                          * are re-calculating and it expanded */
1299                         else if (current_line == start_line &&
1300                                         current_line->index != nstart_index && orig_net_length < prev)
1301                         {
1302                           /* Line expanded due to an upwards line wrap so we must partially include
1303                            * previous line in update region */
1304                                 nstart_line = line_index;
1305                                 nstart_index = current_line->index;
1306                                 istart = current_line->index + orig_net_length;
1307                         }
1308
1309                         current_line->net_length = prev;
1310                         current_line->ending = END_WRAP;
1311                         current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc, current_position,
1312                                         current_line->net_length, es->tabs_count, es->tabs));
1313                 }
1314
1315
1316                 /* Adjust length to include line termination */
1317                 switch (current_line->ending) {
1318                 case END_SOFT:
1319                         current_line->length = current_line->net_length + 3;
1320                         break;
1321                 case END_RICH:
1322                         current_line->length = current_line->net_length + 1;
1323                         break;
1324                 case END_HARD:
1325                         current_line->length = current_line->net_length + 2;
1326                         break;
1327                 case END_WRAP:
1328                 case END_0:
1329                         current_line->length = current_line->net_length;
1330                         break;
1331                 }
1332                 es->text_width = max(es->text_width, current_line->width);
1333                 current_position += current_line->length;
1334                 previous_line = current_line;
1335                 current_line = current_line->next;
1336                 line_index++;
1337         } while (previous_line->ending != END_0);
1338
1339         /* Finish adjusting line indexes by delta or remove hanging lines */
1340         if (previous_line->ending == END_0)
1341         {
1342                 LINEDEF *pnext = NULL;
1343
1344                 previous_line->next = NULL;
1345                 while (current_line)
1346                 {
1347                         pnext = current_line->next;
1348                         HeapFree(GetProcessHeap(), 0, current_line);
1349                         current_line = pnext;
1350                         es->line_count--;
1351                 }
1352         }
1353         else
1354         {
1355                 while (current_line)
1356                 {
1357                         current_line->index += delta;
1358                         current_line = current_line->next;
1359                 }
1360         }
1361
1362         /* Calculate rest of modification rectangle */
1363         if (hrgn)
1364         {
1365                 HRGN tmphrgn;
1366            /*
1367                 * We calculate two rectangles. One for the first line which may have
1368                 * an indent with respect to the format rect. The other is a format-width
1369                 * rectangle that spans the rest of the lines that changed or moved.
1370                 */
1371                 rc.top = es->format_rect.top + nstart_line * es->line_height -
1372                         (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
1373                 rc.bottom = rc.top + es->line_height;
1374                 rc.left = es->format_rect.left + (INT)LOWORD(GetTabbedTextExtentW(dc,
1375                                         es->text + nstart_index, istart - nstart_index,
1376                                         es->tabs_count, es->tabs)) - es->x_offset; /* Adjust for horz scroll */
1377                 rc.right = es->format_rect.right;
1378                 SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);
1379
1380                 rc.top = rc.bottom;
1381                 rc.left = es->format_rect.left;
1382                 rc.right = es->format_rect.right;
1383            /*
1384                 * If lines were added or removed we must re-paint the remainder of the
1385             * lines since the remaining lines were either shifted up or down.
1386                 */
1387                 if (line_count < es->line_count) /* We added lines */
1388                         rc.bottom = es->line_count * es->line_height;
1389                 else if (line_count > es->line_count) /* We removed lines */
1390                         rc.bottom = line_count * es->line_height;
1391                 else
1392                         rc.bottom = line_index * es->line_height;
1393                 rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
1394                 tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
1395                 CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
1396                 DeleteObject(tmphrgn);
1397         }
1398
1399         if (es->font)
1400                 SelectObject(dc, old_font);
1401
1402         ReleaseDC(hwnd, dc);
1403 }
1404
1405 /*********************************************************************
1406  *
1407  *      EDIT_CalcLineWidth_SL
1408  *
1409  */
1410 static void EDIT_CalcLineWidth_SL(HWND hwnd, EDITSTATE *es)
1411 {
1412     es->text_width = SLOWORD(EDIT_EM_PosFromChar(hwnd, es, strlenW(es->text), FALSE));
1413 }
1414
1415 /*********************************************************************
1416  *
1417  *      EDIT_CallWordBreakProc
1418  *
1419  *      Call appropriate WordBreakProc (internal or external).
1420  *
1421  *      Note: The "start" argument should always be an index referring
1422  *              to es->text.  The actual wordbreak proc might be
1423  *              16 bit, so we can't always pass any 32 bit LPSTR.
1424  *              Hence we assume that es->text is the buffer that holds
1425  *              the string under examination (we can decide this for ourselves).
1426  *
1427  */
1428 /* ### start build ### */
1429 extern WORD CALLBACK EDIT_CallTo16_word_lwww(EDITWORDBREAKPROC16,SEGPTR,WORD,WORD,WORD);
1430 /* ### stop build ### */
1431 static INT EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action)
1432 {
1433     INT ret, iWndsLocks;
1434
1435     /* To avoid any deadlocks, all the locks on the window structures
1436        must be suspended before the control is passed to the application */
1437     iWndsLocks = WIN_SuspendWndsLock();
1438
1439         if (es->word_break_proc16) {
1440             HGLOBAL16 hglob16;
1441             SEGPTR segptr;
1442             INT countA;
1443
1444             countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
1445             hglob16 = GlobalAlloc16(GMEM_MOVEABLE | GMEM_ZEROINIT, countA);
1446             segptr = K32WOWGlobalLock16(hglob16);
1447             WideCharToMultiByte(CP_ACP, 0, es->text + start, count, MapSL(segptr), countA, NULL, NULL);
1448             ret = (INT)EDIT_CallTo16_word_lwww(es->word_break_proc16,
1449                                                 segptr, index, countA, action);
1450             GlobalUnlock16(hglob16);
1451             GlobalFree16(hglob16);
1452         }
1453         else if (es->word_break_proc)
1454         {
1455             if(es->is_unicode)
1456             {
1457                 EDITWORDBREAKPROCW wbpW = (EDITWORDBREAKPROCW)es->word_break_proc;
1458
1459                 TRACE_(relay)("(UNICODE wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
1460                         es->word_break_proc, debugstr_wn(es->text + start, count), index, count, action);
1461                 ret = wbpW(es->text + start, index, count, action);
1462             }
1463             else
1464             {
1465                 EDITWORDBREAKPROCA wbpA = (EDITWORDBREAKPROCA)es->word_break_proc;
1466                 INT countA;
1467                 CHAR *textA;
1468
1469                 countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
1470                 textA = HeapAlloc(GetProcessHeap(), 0, countA);
1471                 WideCharToMultiByte(CP_ACP, 0, es->text + start, count, textA, countA, NULL, NULL);
1472                 TRACE_(relay)("(ANSI wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
1473                         es->word_break_proc, debugstr_an(textA, countA), index, countA, action);
1474                 ret = wbpA(textA, index, countA, action);
1475                 HeapFree(GetProcessHeap(), 0, textA);
1476             }
1477         }
1478         else
1479             ret = EDIT_WordBreakProc(es->text + start, index, count, action);
1480
1481     WIN_RestoreWndsLock(iWndsLocks);
1482     return ret;
1483 }
1484
1485
1486 /*********************************************************************
1487  *
1488  *      EDIT_CharFromPos
1489  *
1490  *      Beware: This is not the function called on EM_CHARFROMPOS
1491  *              The position _can_ be outside the formatting / client
1492  *              rectangle
1493  *              The return value is only the character index
1494  *
1495  */
1496 static INT EDIT_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
1497 {
1498         INT index;
1499         HDC dc;
1500         HFONT old_font = 0;
1501
1502         if (es->style & ES_MULTILINE) {
1503                 INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
1504                 INT line_index = 0;
1505                 LINEDEF *line_def = es->first_line_def;
1506                 INT low, high;
1507                 while ((line > 0) && line_def->next) {
1508                         line_index += line_def->length;
1509                         line_def = line_def->next;
1510                         line--;
1511                 }
1512                 x += es->x_offset - es->format_rect.left;
1513                 if (x >= line_def->width) {
1514                         if (after_wrap)
1515                                 *after_wrap = (line_def->ending == END_WRAP);
1516                         return line_index + line_def->net_length;
1517                 }
1518                 if (x <= 0) {
1519                         if (after_wrap)
1520                                 *after_wrap = FALSE;
1521                         return line_index;
1522                 }
1523                 dc = GetDC(hwnd);
1524                 if (es->font)
1525                         old_font = SelectObject(dc, es->font);
1526                     low = line_index + 1;
1527                     high = line_index + line_def->net_length + 1;
1528                     while (low < high - 1)
1529                     {
1530                         INT mid = (low + high) / 2;
1531                         if (LOWORD(GetTabbedTextExtentW(dc, es->text + line_index,mid - line_index, es->tabs_count, es->tabs)) > x) high = mid;
1532                         else low = mid;
1533                     }
1534                     index = low;
1535
1536                 if (after_wrap)
1537                         *after_wrap = ((index == line_index + line_def->net_length) &&
1538                                                         (line_def->ending == END_WRAP));
1539         } else {
1540                 LPWSTR text;
1541                 SIZE size;
1542                 if (after_wrap)
1543                         *after_wrap = FALSE;
1544                 x -= es->format_rect.left;
1545                 if (!x)
1546                         return es->x_offset;
1547                 text = EDIT_GetPasswordPointer_SL(es);
1548                 dc = GetDC(hwnd);
1549                 if (es->font)
1550                         old_font = SelectObject(dc, es->font);
1551                 if (x < 0)
1552                 {
1553                     INT low = 0;
1554                     INT high = es->x_offset;
1555                     while (low < high - 1)
1556                     {
1557                         INT mid = (low + high) / 2;
1558                         GetTextExtentPoint32W( dc, text + mid,
1559                                                es->x_offset - mid, &size );
1560                         if (size.cx > -x) low = mid;
1561                         else high = mid;
1562                     }
1563                     index = low;
1564                 }
1565                 else
1566                 {
1567                     INT low = es->x_offset;
1568                     INT high = strlenW(es->text) + 1;
1569                     while (low < high - 1)
1570                     {
1571                         INT mid = (low + high) / 2;
1572                         GetTextExtentPoint32W( dc, text + es->x_offset,
1573                                                mid - es->x_offset, &size );
1574                         if (size.cx > x) high = mid;
1575                         else low = mid;
1576                     }
1577                     index = low;
1578                 }
1579                 if (es->style & ES_PASSWORD)
1580                         HeapFree(GetProcessHeap(), 0, text);
1581         }
1582         if (es->font)
1583                 SelectObject(dc, old_font);
1584         ReleaseDC(hwnd, dc);
1585         return index;
1586 }
1587
1588
1589 /*********************************************************************
1590  *
1591  *      EDIT_ConfinePoint
1592  *
1593  *      adjusts the point to be within the formatting rectangle
1594  *      (so CharFromPos returns the nearest _visible_ character)
1595  *
1596  */
1597 static void EDIT_ConfinePoint(EDITSTATE *es, LPINT x, LPINT y)
1598 {
1599         *x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
1600         *y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
1601 }
1602
1603
1604 /*********************************************************************
1605  *
1606  *      EDIT_GetLineRect
1607  *
1608  *      Calculates the bounding rectangle for a line from a starting
1609  *      column to an ending column.
1610  *
1611  */
1612 static void EDIT_GetLineRect(HWND hwnd, EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
1613 {
1614         INT line_index =  EDIT_EM_LineIndex(es, line);
1615
1616         if (es->style & ES_MULTILINE)
1617                 rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
1618         else
1619                 rc->top = es->format_rect.top;
1620         rc->bottom = rc->top + es->line_height;
1621         rc->left = (scol == 0) ? es->format_rect.left : SLOWORD(EDIT_EM_PosFromChar(hwnd, es, line_index + scol, TRUE));
1622         rc->right = (ecol == -1) ? es->format_rect.right : SLOWORD(EDIT_EM_PosFromChar(hwnd, es, line_index + ecol, TRUE));
1623 }
1624
1625
1626 /*********************************************************************
1627  *
1628  *      EDIT_GetPasswordPointer_SL
1629  *
1630  *      note: caller should free the (optionally) allocated buffer
1631  *
1632  */
1633 static LPWSTR EDIT_GetPasswordPointer_SL(EDITSTATE *es)
1634 {
1635         if (es->style & ES_PASSWORD) {
1636                 INT len = strlenW(es->text);
1637                 LPWSTR text = HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR));
1638                 text[len] = '\0';
1639                 while(len) text[--len] = es->password_char;
1640                 return text;
1641         } else
1642                 return es->text;
1643 }
1644
1645
1646 /*********************************************************************
1647  *
1648  *      EDIT_LockBuffer
1649  *
1650  *      This acts as a LOCAL_Lock(), but it locks only once.  This way
1651  *      you can call it whenever you like, without unlocking.
1652  *
1653  */
1654 static void EDIT_LockBuffer(HWND hwnd, EDITSTATE *es)
1655 {
1656     HINSTANCE hInstance = GetWindowLongA( hwnd, GWL_HINSTANCE );
1657         if (!es) {
1658                 ERR("no EDITSTATE ... please report\n");
1659                 return;
1660         }
1661         if (!es->text) {
1662             CHAR *textA = NULL;
1663             UINT countA = 0;
1664             BOOL _16bit = FALSE;
1665
1666             if(es->hloc32W)
1667             {
1668                 if(es->hloc32A)
1669                 {
1670                     TRACE("Synchronizing with 32-bit ANSI buffer\n");
1671                     textA = LocalLock(es->hloc32A);
1672                     countA = strlen(textA) + 1;
1673                 }
1674                 else if(es->hloc16)
1675                 {
1676                     TRACE("Synchronizing with 16-bit ANSI buffer\n");
1677                     textA = LOCAL_Lock(hInstance, es->hloc16);
1678                     countA = strlen(textA) + 1;
1679                     _16bit = TRUE;
1680                 }
1681             }
1682             else {
1683                 ERR("no buffer ... please report\n");
1684                 return;
1685             }
1686
1687             if(textA)
1688             {
1689                 HLOCAL hloc32W_new;
1690                 UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
1691                 TRACE("%d bytes translated to %d WCHARs\n", countA, countW_new);
1692                 if(countW_new > es->buffer_size + 1)
1693                 {
1694                     UINT alloc_size = ROUND_TO_GROW(countW_new * sizeof(WCHAR));
1695                     TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
1696                     hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1697                     if(hloc32W_new)
1698                     {
1699                         es->hloc32W = hloc32W_new;
1700                         es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
1701                         TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
1702                     }
1703                     else
1704                         WARN("FAILED! Will synchronize partially\n");
1705                 }
1706             }
1707
1708             /*TRACE("Locking 32-bit UNICODE buffer\n");*/
1709             es->text = LocalLock(es->hloc32W);
1710
1711             if(textA)
1712             {
1713                 MultiByteToWideChar(CP_ACP, 0, textA, countA, es->text, es->buffer_size + 1);
1714                 if(_16bit)
1715                     LOCAL_Unlock(hInstance, es->hloc16);
1716                 else
1717                     LocalUnlock(es->hloc32A);
1718             }
1719         }
1720         es->lock_count++;
1721 }
1722
1723
1724 /*********************************************************************
1725  *
1726  *      EDIT_SL_InvalidateText
1727  *
1728  *      Called from EDIT_InvalidateText().
1729  *      Does the job for single-line controls only.
1730  *
1731  */
1732 static void EDIT_SL_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end)
1733 {
1734         RECT line_rect;
1735         RECT rc;
1736
1737         EDIT_GetLineRect(hwnd, es, 0, start, end, &line_rect);
1738         if (IntersectRect(&rc, &line_rect, &es->format_rect))
1739                 EDIT_UpdateText(hwnd, es, &rc, TRUE);
1740 }
1741
1742
1743 /*********************************************************************
1744  *
1745  *      EDIT_ML_InvalidateText
1746  *
1747  *      Called from EDIT_InvalidateText().
1748  *      Does the job for multi-line controls only.
1749  *
1750  */
1751 static void EDIT_ML_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end)
1752 {
1753         INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1754         INT sl = EDIT_EM_LineFromChar(es, start);
1755         INT el = EDIT_EM_LineFromChar(es, end);
1756         INT sc;
1757         INT ec;
1758         RECT rc1;
1759         RECT rcWnd;
1760         RECT rcLine;
1761         RECT rcUpdate;
1762         INT l;
1763
1764         if ((el < es->y_offset) || (sl > es->y_offset + vlc))
1765                 return;
1766
1767         sc = start - EDIT_EM_LineIndex(es, sl);
1768         ec = end - EDIT_EM_LineIndex(es, el);
1769         if (sl < es->y_offset) {
1770                 sl = es->y_offset;
1771                 sc = 0;
1772         }
1773         if (el > es->y_offset + vlc) {
1774                 el = es->y_offset + vlc;
1775                 ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
1776         }
1777         GetClientRect(hwnd, &rc1);
1778         IntersectRect(&rcWnd, &rc1, &es->format_rect);
1779         if (sl == el) {
1780                 EDIT_GetLineRect(hwnd, es, sl, sc, ec, &rcLine);
1781                 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1782                         EDIT_UpdateText(hwnd, es, &rcUpdate, TRUE);
1783         } else {
1784                 EDIT_GetLineRect(hwnd, es, sl, sc,
1785                                 EDIT_EM_LineLength(es,
1786                                         EDIT_EM_LineIndex(es, sl)),
1787                                 &rcLine);
1788                 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1789                         EDIT_UpdateText(hwnd, es, &rcUpdate, TRUE);
1790                 for (l = sl + 1 ; l < el ; l++) {
1791                         EDIT_GetLineRect(hwnd, es, l, 0,
1792                                 EDIT_EM_LineLength(es,
1793                                         EDIT_EM_LineIndex(es, l)),
1794                                 &rcLine);
1795                         if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1796                                 EDIT_UpdateText(hwnd, es, &rcUpdate, TRUE);
1797                 }
1798                 EDIT_GetLineRect(hwnd, es, el, 0, ec, &rcLine);
1799                 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1800                         EDIT_UpdateText(hwnd, es, &rcUpdate, TRUE);
1801         }
1802 }
1803
1804
1805 /*********************************************************************
1806  *
1807  *      EDIT_InvalidateText
1808  *
1809  *      Invalidate the text from offset start upto, but not including,
1810  *      offset end.  Useful for (re)painting the selection.
1811  *      Regions outside the linewidth are not invalidated.
1812  *      end == -1 means end == TextLength.
1813  *      start and end need not be ordered.
1814  *
1815  */
1816 static void EDIT_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end)
1817 {
1818         if (end == start)
1819                 return;
1820
1821         if (end == -1)
1822                 end = strlenW(es->text);
1823
1824         ORDER_INT(start, end);
1825
1826         if (es->style & ES_MULTILINE)
1827                 EDIT_ML_InvalidateText(hwnd, es, start, end);
1828         else
1829                 EDIT_SL_InvalidateText(hwnd, es, start, end);
1830 }
1831
1832
1833 /*********************************************************************
1834  *
1835  *      EDIT_MakeFit
1836  *
1837  *      Try to fit size + 1 characters in the buffer. Constrain to limits.
1838  *
1839  */
1840 static BOOL EDIT_MakeFit(HWND hwnd, EDITSTATE *es, UINT size)
1841 {
1842         HLOCAL hNew32W;
1843
1844         if (size <= es->buffer_size)
1845                 return TRUE;
1846         if ((es->buffer_limit > 0) && (size > es->buffer_limit)) {
1847                 EDIT_NOTIFY_PARENT(hwnd, es, EN_MAXTEXT, "EN_MAXTEXT");
1848                 return FALSE;
1849         }
1850         if ((es->buffer_limit > 0) && (size > es->buffer_limit))
1851                 size = es->buffer_limit;
1852
1853         TRACE("trying to ReAlloc to %d+1 characters\n", size);
1854
1855         /* Force edit to unlock it's buffer. es->text now NULL */
1856         EDIT_UnlockBuffer(hwnd, es, TRUE);
1857
1858         if (es->hloc32W) {
1859             UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1860             if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
1861                 TRACE("Old 32 bit handle %08x, new handle %08x\n", es->hloc32W, hNew32W);
1862                 es->hloc32W = hNew32W;
1863                 es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
1864             }
1865         }
1866
1867         EDIT_LockBuffer(hwnd, es);
1868
1869         if (es->buffer_size < size) {
1870                 WARN("FAILED !  We now have %d+1\n", es->buffer_size);
1871                 EDIT_NOTIFY_PARENT(hwnd, es, EN_ERRSPACE, "EN_ERRSPACE");
1872                 return FALSE;
1873         } else {
1874                 TRACE("We now have %d+1\n", es->buffer_size);
1875                 return TRUE;
1876         }
1877 }
1878
1879
1880 /*********************************************************************
1881  *
1882  *      EDIT_MakeUndoFit
1883  *
1884  *      Try to fit size + 1 bytes in the undo buffer.
1885  *
1886  */
1887 static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
1888 {
1889         UINT alloc_size;
1890
1891         if (size <= es->undo_buffer_size)
1892                 return TRUE;
1893
1894         TRACE("trying to ReAlloc to %d+1\n", size);
1895
1896         alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1897         if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
1898                 es->undo_buffer_size = alloc_size/sizeof(WCHAR);
1899                 return TRUE;
1900         }
1901         else
1902         {
1903                 WARN("FAILED !  We now have %d+1\n", es->undo_buffer_size);
1904                 return FALSE;
1905         }
1906 }
1907
1908
1909 /*********************************************************************
1910  *
1911  *      EDIT_MoveBackward
1912  *
1913  */
1914 static void EDIT_MoveBackward(HWND hwnd, EDITSTATE *es, BOOL extend)
1915 {
1916         INT e = es->selection_end;
1917
1918         if (e) {
1919                 e--;
1920                 if ((es->style & ES_MULTILINE) && e &&
1921                                 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1922                         e--;
1923                         if (e && (es->text[e - 1] == '\r'))
1924                                 e--;
1925                 }
1926         }
1927         EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, FALSE);
1928         EDIT_EM_ScrollCaret(hwnd, es);
1929 }
1930
1931
1932 /*********************************************************************
1933  *
1934  *      EDIT_MoveDown_ML
1935  *
1936  *      Only for multi line controls
1937  *      Move the caret one line down, on a column with the nearest
1938  *      x coordinate on the screen (might be a different column).
1939  *
1940  */
1941 static void EDIT_MoveDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
1942 {
1943         INT s = es->selection_start;
1944         INT e = es->selection_end;
1945         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1946         LRESULT pos = EDIT_EM_PosFromChar(hwnd, es, e, after_wrap);
1947         INT x = SLOWORD(pos);
1948         INT y = SHIWORD(pos);
1949
1950         e = EDIT_CharFromPos(hwnd, es, x, y + es->line_height, &after_wrap);
1951         if (!extend)
1952                 s = e;
1953         EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
1954         EDIT_EM_ScrollCaret(hwnd, es);
1955 }
1956
1957
1958 /*********************************************************************
1959  *
1960  *      EDIT_MoveEnd
1961  *
1962  */
1963 static void EDIT_MoveEnd(HWND hwnd, EDITSTATE *es, BOOL extend)
1964 {
1965         BOOL after_wrap = FALSE;
1966         INT e;
1967
1968         /* Pass a high value in x to make sure of receiving the end of the line */
1969         if (es->style & ES_MULTILINE)
1970                 e = EDIT_CharFromPos(hwnd, es, 0x3fffffff,
1971                         HIWORD(EDIT_EM_PosFromChar(hwnd, es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1972         else
1973                 e = strlenW(es->text);
1974         EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, after_wrap);
1975         EDIT_EM_ScrollCaret(hwnd, es);
1976 }
1977
1978
1979 /*********************************************************************
1980  *
1981  *      EDIT_MoveForward
1982  *
1983  */
1984 static void EDIT_MoveForward(HWND hwnd, EDITSTATE *es, BOOL extend)
1985 {
1986         INT e = es->selection_end;
1987
1988         if (es->text[e]) {
1989                 e++;
1990                 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1991                         if (es->text[e] == '\n')
1992                                 e++;
1993                         else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1994                                 e += 2;
1995                 }
1996         }
1997         EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, FALSE);
1998         EDIT_EM_ScrollCaret(hwnd, es);
1999 }
2000
2001
2002 /*********************************************************************
2003  *
2004  *      EDIT_MoveHome
2005  *
2006  *      Home key: move to beginning of line.
2007  *
2008  */
2009 static void EDIT_MoveHome(HWND hwnd, EDITSTATE *es, BOOL extend)
2010 {
2011         INT e;
2012
2013         /* Pass the x_offset in x to make sure of receiving the first position of the line */
2014         if (es->style & ES_MULTILINE)
2015                 e = EDIT_CharFromPos(hwnd, es, -es->x_offset,
2016                         HIWORD(EDIT_EM_PosFromChar(hwnd, es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
2017         else
2018                 e = 0;
2019         EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, FALSE);
2020         EDIT_EM_ScrollCaret(hwnd, es);
2021 }
2022
2023
2024 /*********************************************************************
2025  *
2026  *      EDIT_MovePageDown_ML
2027  *
2028  *      Only for multi line controls
2029  *      Move the caret one page down, on a column with the nearest
2030  *      x coordinate on the screen (might be a different column).
2031  *
2032  */
2033 static void EDIT_MovePageDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
2034 {
2035         INT s = es->selection_start;
2036         INT e = es->selection_end;
2037         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2038         LRESULT pos = EDIT_EM_PosFromChar(hwnd, es, e, after_wrap);
2039         INT x = SLOWORD(pos);
2040         INT y = SHIWORD(pos);
2041
2042         e = EDIT_CharFromPos(hwnd, es, x,
2043                 y + (es->format_rect.bottom - es->format_rect.top),
2044                 &after_wrap);
2045         if (!extend)
2046                 s = e;
2047         EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
2048         EDIT_EM_ScrollCaret(hwnd, es);
2049 }
2050
2051
2052 /*********************************************************************
2053  *
2054  *      EDIT_MovePageUp_ML
2055  *
2056  *      Only for multi line controls
2057  *      Move the caret one page up, on a column with the nearest
2058  *      x coordinate on the screen (might be a different column).
2059  *
2060  */
2061 static void EDIT_MovePageUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
2062 {
2063         INT s = es->selection_start;
2064         INT e = es->selection_end;
2065         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2066         LRESULT pos = EDIT_EM_PosFromChar(hwnd, es, e, after_wrap);
2067         INT x = SLOWORD(pos);
2068         INT y = SHIWORD(pos);
2069
2070         e = EDIT_CharFromPos(hwnd, es, x,
2071                 y - (es->format_rect.bottom - es->format_rect.top),
2072                 &after_wrap);
2073         if (!extend)
2074                 s = e;
2075         EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
2076         EDIT_EM_ScrollCaret(hwnd, es);
2077 }
2078
2079
2080 /*********************************************************************
2081  *
2082  *      EDIT_MoveUp_ML
2083  *
2084  *      Only for multi line controls
2085  *      Move the caret one line up, on a column with the nearest
2086  *      x coordinate on the screen (might be a different column).
2087  *
2088  */
2089 static void EDIT_MoveUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
2090 {
2091         INT s = es->selection_start;
2092         INT e = es->selection_end;
2093         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2094         LRESULT pos = EDIT_EM_PosFromChar(hwnd, es, e, after_wrap);
2095         INT x = SLOWORD(pos);
2096         INT y = SHIWORD(pos);
2097
2098         e = EDIT_CharFromPos(hwnd, es, x, y - es->line_height, &after_wrap);
2099         if (!extend)
2100                 s = e;
2101         EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
2102         EDIT_EM_ScrollCaret(hwnd, es);
2103 }
2104
2105
2106 /*********************************************************************
2107  *
2108  *      EDIT_MoveWordBackward
2109  *
2110  */
2111 static void EDIT_MoveWordBackward(HWND hwnd, EDITSTATE *es, BOOL extend)
2112 {
2113         INT s = es->selection_start;
2114         INT e = es->selection_end;
2115         INT l;
2116         INT ll;
2117         INT li;
2118
2119         l = EDIT_EM_LineFromChar(es, e);
2120         ll = EDIT_EM_LineLength(es, e);
2121         li = EDIT_EM_LineIndex(es, l);
2122         if (e - li == 0) {
2123                 if (l) {
2124                         li = EDIT_EM_LineIndex(es, l - 1);
2125                         e = li + EDIT_EM_LineLength(es, li);
2126                 }
2127         } else {
2128                 e = li + (INT)EDIT_CallWordBreakProc(es,
2129                                 li, e - li, ll, WB_LEFT);
2130         }
2131         if (!extend)
2132                 s = e;
2133         EDIT_EM_SetSel(hwnd, es, s, e, FALSE);
2134         EDIT_EM_ScrollCaret(hwnd, es);
2135 }
2136
2137
2138 /*********************************************************************
2139  *
2140  *      EDIT_MoveWordForward
2141  *
2142  */
2143 static void EDIT_MoveWordForward(HWND hwnd, EDITSTATE *es, BOOL extend)
2144 {
2145         INT s = es->selection_start;
2146         INT e = es->selection_end;
2147         INT l;
2148         INT ll;
2149         INT li;
2150
2151         l = EDIT_EM_LineFromChar(es, e);
2152         ll = EDIT_EM_LineLength(es, e);
2153         li = EDIT_EM_LineIndex(es, l);
2154         if (e - li == ll) {
2155                 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
2156                         e = EDIT_EM_LineIndex(es, l + 1);
2157         } else {
2158                 e = li + EDIT_CallWordBreakProc(es,
2159                                 li, e - li + 1, ll, WB_RIGHT);
2160         }
2161         if (!extend)
2162                 s = e;
2163         EDIT_EM_SetSel(hwnd, es, s, e, FALSE);
2164         EDIT_EM_ScrollCaret(hwnd, es);
2165 }
2166
2167
2168 /*********************************************************************
2169  *
2170  *      EDIT_PaintLine
2171  *
2172  */
2173 static void EDIT_PaintLine(HWND hwnd, EDITSTATE *es, HDC dc, INT line, BOOL rev)
2174 {
2175         INT s = es->selection_start;
2176         INT e = es->selection_end;
2177         INT li;
2178         INT ll;
2179         INT x;
2180         INT y;
2181         LRESULT pos;
2182
2183         if (es->style & ES_MULTILINE) {
2184                 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2185                 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
2186                         return;
2187         } else if (line)
2188                 return;
2189
2190         TRACE("line=%d\n", line);
2191
2192         pos = EDIT_EM_PosFromChar(hwnd, es, EDIT_EM_LineIndex(es, line), FALSE);
2193         x = SLOWORD(pos);
2194         y = SHIWORD(pos);
2195         li = EDIT_EM_LineIndex(es, line);
2196         ll = EDIT_EM_LineLength(es, li);
2197         s = es->selection_start;
2198         e = es->selection_end;
2199         ORDER_INT(s, e);
2200         s = min(li + ll, max(li, s));
2201         e = min(li + ll, max(li, e));
2202         if (rev && (s != e) &&
2203                         ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
2204                 x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
2205                 x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
2206                 x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
2207         } else
2208                 x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
2209 }
2210
2211
2212 /*********************************************************************
2213  *
2214  *      EDIT_PaintText
2215  *
2216  */
2217 static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
2218 {
2219         COLORREF BkColor;
2220         COLORREF TextColor;
2221         INT ret;
2222         INT li;
2223         INT BkMode;
2224         SIZE size;
2225
2226         if (!count)
2227                 return 0;
2228         BkMode = GetBkMode(dc);
2229         BkColor = GetBkColor(dc);
2230         TextColor = GetTextColor(dc);
2231         if (rev) {
2232                 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
2233                 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2234                 SetBkMode( dc, OPAQUE);
2235         }
2236         li = EDIT_EM_LineIndex(es, line);
2237         if (es->style & ES_MULTILINE) {
2238                 ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
2239                                         es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
2240         } else {
2241                 LPWSTR text = EDIT_GetPasswordPointer_SL(es);
2242                 TextOutW(dc, x, y, text + li + col, count);
2243                 GetTextExtentPoint32W(dc, text + li + col, count, &size);
2244                 ret = size.cx;
2245                 if (es->style & ES_PASSWORD)
2246                         HeapFree(GetProcessHeap(), 0, text);
2247         }
2248         if (rev) {
2249                 SetBkColor(dc, BkColor);
2250                 SetTextColor(dc, TextColor);
2251                 SetBkMode( dc, BkMode);
2252         }
2253         return ret;
2254 }
2255
2256
2257 /*********************************************************************
2258  *
2259  *      EDIT_SetCaretPos
2260  *
2261  */
2262 static void EDIT_SetCaretPos(HWND hwnd, EDITSTATE *es, INT pos,
2263                              BOOL after_wrap)
2264 {
2265         LRESULT res = EDIT_EM_PosFromChar(hwnd, es, pos, after_wrap);
2266         SetCaretPos(SLOWORD(res), SHIWORD(res));
2267 }
2268
2269
2270 /*********************************************************************
2271  *
2272  *      EDIT_SetRectNP
2273  *
2274  *      note:   this is not (exactly) the handler called on EM_SETRECTNP
2275  *              it is also used to set the rect of a single line control
2276  *
2277  */
2278 static void EDIT_SetRectNP(HWND hwnd, EDITSTATE *es, LPRECT rc)
2279 {
2280         CopyRect(&es->format_rect, rc);
2281         if (es->style & WS_BORDER) {
2282                 INT bw = GetSystemMetrics(SM_CXBORDER) + 1;
2283                 if(TWEAK_WineLook == WIN31_LOOK)
2284                         bw += 2;
2285                 es->format_rect.left += bw;
2286                 es->format_rect.top += bw;
2287                 es->format_rect.right -= bw;
2288                 es->format_rect.bottom -= bw;
2289         }
2290         es->format_rect.left += es->left_margin;
2291         es->format_rect.right -= es->right_margin;
2292         es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
2293         if (es->style & ES_MULTILINE)
2294         {
2295             INT fw, vlc, max_x_offset, max_y_offset;
2296
2297             vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2298             es->format_rect.bottom = es->format_rect.top + max(1, vlc) * es->line_height;
2299
2300             /* correct es->x_offset */
2301             fw = es->format_rect.right - es->format_rect.left;
2302             max_x_offset = es->text_width - fw;
2303             if(max_x_offset < 0) max_x_offset = 0;
2304             if(es->x_offset > max_x_offset)
2305                 es->x_offset = max_x_offset;
2306
2307             /* correct es->y_offset */
2308             max_y_offset = es->line_count - vlc;
2309             if(max_y_offset < 0) max_y_offset = 0;
2310             if(es->y_offset > max_y_offset)
2311                 es->y_offset = max_y_offset;
2312
2313             /* force scroll info update */
2314             EDIT_UpdateScrollInfo(hwnd, es);
2315         }
2316         else
2317         /* Windows doesn't care to fix text placement for SL controls */
2318                 es->format_rect.bottom = es->format_rect.top + es->line_height;
2319
2320         if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
2321                 EDIT_BuildLineDefs_ML(hwnd, es, 0, strlenW(es->text), 0, (HRGN)0);
2322 }
2323
2324
2325 /*********************************************************************
2326  *
2327  *      EDIT_UnlockBuffer
2328  *
2329  */
2330 static void EDIT_UnlockBuffer(HWND hwnd, EDITSTATE *es, BOOL force)
2331 {
2332     HINSTANCE hInstance = GetWindowLongA( hwnd, GWL_HINSTANCE );
2333
2334     /* Edit window might be already destroyed */
2335     if(!IsWindow(hwnd))
2336     {
2337         WARN("edit hwnd %04x already destroyed\n", hwnd);
2338         return;
2339     }
2340
2341         if (!es) {
2342                 ERR("no EDITSTATE ... please report\n");
2343                 return;
2344         }
2345         if (!es->lock_count) {
2346                 ERR("lock_count == 0 ... please report\n");
2347                 return;
2348         }
2349         if (!es->text) {
2350                 ERR("es->text == 0 ... please report\n");
2351                 return;
2352         }
2353
2354         if (force || (es->lock_count == 1)) {
2355             if (es->hloc32W) {
2356                 CHAR *textA = NULL;
2357                 BOOL _16bit = FALSE;
2358                 UINT countA = 0;
2359                 UINT countW = strlenW(es->text) + 1;
2360
2361                 if(es->hloc32A)
2362                 {
2363                     UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
2364                     TRACE("Synchronizing with 32-bit ANSI buffer\n");
2365                     TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
2366                     countA = LocalSize(es->hloc32A);
2367                     if(countA_new > countA)
2368                     {
2369                         HLOCAL hloc32A_new;
2370                         UINT alloc_size = ROUND_TO_GROW(countA_new);
2371                         TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
2372                         hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
2373                         if(hloc32A_new)
2374                         {
2375                             es->hloc32A = hloc32A_new;
2376                             countA = LocalSize(hloc32A_new);
2377                             TRACE("Real new size %d bytes\n", countA);
2378                         }
2379                         else
2380                             WARN("FAILED! Will synchronize partially\n");
2381                     }
2382                     textA = LocalLock(es->hloc32A);
2383                 }
2384                 else if(es->hloc16)
2385                 {
2386                     UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
2387                     TRACE("Synchronizing with 16-bit ANSI buffer\n");
2388                     TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
2389                     countA = LOCAL_Size(hInstance, es->hloc16);
2390                     if(countA_new > countA)
2391                     {
2392                         HLOCAL16 hloc16_new;
2393                         UINT alloc_size = ROUND_TO_GROW(countA_new);
2394                         TRACE("Resizing 16-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
2395                         hloc16_new = LOCAL_ReAlloc(hInstance, es->hloc16, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
2396                         if(hloc16_new)
2397                         {
2398                             es->hloc16 = hloc16_new;
2399                             countA = LOCAL_Size(hInstance, hloc16_new);
2400                             TRACE("Real new size %d bytes\n", countA);
2401                         }
2402                         else
2403                             WARN("FAILED! Will synchronize partially\n");
2404                     }
2405                     textA = LOCAL_Lock(hInstance, es->hloc16);
2406                     _16bit = TRUE;
2407                 }
2408
2409                 if(textA)
2410                 {
2411                     WideCharToMultiByte(CP_ACP, 0, es->text, countW, textA, countA, NULL, NULL);
2412                     if(_16bit)
2413                         LOCAL_Unlock(hInstance, es->hloc16);
2414                     else
2415                         LocalUnlock(es->hloc32A);
2416                 }
2417
2418                 LocalUnlock(es->hloc32W);
2419                 es->text = NULL;
2420             }
2421             else {
2422                 ERR("no buffer ... please report\n");
2423                 return;
2424             }
2425         }
2426         es->lock_count--;
2427 }
2428
2429
2430 /*********************************************************************
2431  *
2432  *      EDIT_UpdateScrollInfo
2433  *
2434  */
2435 static void EDIT_UpdateScrollInfo(HWND hwnd, EDITSTATE *es)
2436 {
2437     if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
2438     {
2439         SCROLLINFO si;
2440         si.cbSize       = sizeof(SCROLLINFO);
2441         si.fMask        = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2442         si.nMin         = 0;
2443         si.nMax         = es->line_count - 1;
2444         si.nPage        = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2445         si.nPos         = es->y_offset;
2446         TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
2447                 si.nMin, si.nMax, si.nPage, si.nPos);
2448         SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2449     }
2450
2451     if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
2452     {
2453         SCROLLINFO si;
2454         si.cbSize       = sizeof(SCROLLINFO);
2455         si.fMask        = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2456         si.nMin         = 0;
2457         si.nMax         = es->text_width - 1;
2458         si.nPage        = es->format_rect.right - es->format_rect.left;
2459         si.nPos         = es->x_offset;
2460         TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
2461                 si.nMin, si.nMax, si.nPage, si.nPos);
2462         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2463     }
2464 }
2465
2466 /*********************************************************************
2467  *
2468  *      EDIT_WordBreakProc
2469  *
2470  *      Find the beginning of words.
2471  *      Note:   unlike the specs for a WordBreakProc, this function only
2472  *              allows to be called without linebreaks between s[0] upto
2473  *              s[count - 1].  Remember it is only called
2474  *              internally, so we can decide this for ourselves.
2475  *
2476  */
2477 static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action)
2478 {
2479         INT ret = 0;
2480
2481         TRACE("s=%p, index=%d, count=%d, action=%d\n", s, index, count, action);
2482
2483         if(!s) return 0;
2484
2485         switch (action) {
2486         case WB_LEFT:
2487                 if (!count)
2488                         break;
2489                 if (index)
2490                         index--;
2491                 if (s[index] == ' ') {
2492                         while (index && (s[index] == ' '))
2493                                 index--;
2494                         if (index) {
2495                                 while (index && (s[index] != ' '))
2496                                         index--;
2497                                 if (s[index] == ' ')
2498                                         index++;
2499                         }
2500                 } else {
2501                         while (index && (s[index] != ' '))
2502                                 index--;
2503                         if (s[index] == ' ')
2504                                 index++;
2505                 }
2506                 ret = index;
2507                 break;
2508         case WB_RIGHT:
2509                 if (!count)
2510                         break;
2511                 if (index)
2512                         index--;
2513                 if (s[index] == ' ')
2514                         while ((index < count) && (s[index] == ' ')) index++;
2515                 else {
2516                         while (s[index] && (s[index] != ' ') && (index < count))
2517                                 index++;
2518                         while ((s[index] == ' ') && (index < count)) index++;
2519                 }
2520                 ret = index;
2521                 break;
2522         case WB_ISDELIMITER:
2523                 ret = (s[index] == ' ');
2524                 break;
2525         default:
2526                 ERR("unknown action code, please report !\n");
2527                 break;
2528         }
2529         return ret;
2530 }
2531
2532
2533 /*********************************************************************
2534  *
2535  *      EM_CHARFROMPOS
2536  *
2537  *      returns line number (not index) in high-order word of result.
2538  *      NB : Q137805 is unclear about this. POINT * pointer in lParam apply
2539  *      to Richedit, not to the edit control. Original documentation is valid.
2540  *      FIXME: do the specs mean to return -1 if outside client area or
2541  *              if outside formatting rectangle ???
2542  *
2543  */
2544 static LRESULT EDIT_EM_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y)
2545 {
2546         POINT pt;
2547         RECT rc;
2548         INT index;
2549
2550         pt.x = x;
2551         pt.y = y;
2552         GetClientRect(hwnd, &rc);
2553         if (!PtInRect(&rc, pt))
2554                 return -1;
2555
2556         index = EDIT_CharFromPos(hwnd, es, x, y, NULL);
2557         return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
2558 }
2559
2560
2561 /*********************************************************************
2562  *
2563  *      EM_FMTLINES
2564  *
2565  * Enable or disable soft breaks.
2566  */
2567 static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
2568 {
2569         es->flags &= ~EF_USE_SOFTBRK;
2570         if (add_eol) {
2571                 es->flags |= EF_USE_SOFTBRK;
2572                 FIXME("soft break enabled, not implemented\n");
2573         }
2574         return add_eol;
2575 }
2576
2577
2578 /*********************************************************************
2579  *
2580  *      EM_GETHANDLE
2581  *
2582  *      Hopefully this won't fire back at us.
2583  *      We always start with a fixed buffer in the local heap.
2584  *      Despite of the documentation says that the local heap is used
2585  *      only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
2586  *      buffer on the local heap.
2587  *
2588  */
2589 static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
2590 {
2591         HLOCAL hLocal;
2592
2593         if (!(es->style & ES_MULTILINE))
2594                 return 0;
2595
2596         if(es->is_unicode)
2597             hLocal = es->hloc32W;
2598         else
2599         {
2600             if(!es->hloc32A)
2601             {
2602                 CHAR *textA;
2603                 UINT countA, alloc_size;
2604                 TRACE("Allocating 32-bit ANSI alias buffer\n");
2605                 countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2606                 alloc_size = ROUND_TO_GROW(countA);
2607                 if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
2608                 {
2609                     ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
2610                     return 0;
2611                 }
2612                 textA = LocalLock(es->hloc32A);
2613                 WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2614                 LocalUnlock(es->hloc32A);
2615             }
2616             hLocal = es->hloc32A;
2617         }
2618
2619         TRACE("Returning %04X, LocalSize() = %d\n", hLocal, LocalSize(hLocal));
2620         return hLocal;
2621 }
2622
2623
2624 /*********************************************************************
2625  *
2626  *      EM_GETHANDLE16
2627  *
2628  *      Hopefully this won't fire back at us.
2629  *      We always start with a buffer in 32 bit linear memory.
2630  *      However, with this message a 16 bit application requests
2631  *      a handle of 16 bit local heap memory, where it expects to find
2632  *      the text.
2633  *      It's a pitty that from this moment on we have to use this
2634  *      local heap, because applications may rely on the handle
2635  *      in the future.
2636  *
2637  *      In this function we'll try to switch to local heap.
2638  */
2639 static HLOCAL16 EDIT_EM_GetHandle16(HWND hwnd, EDITSTATE *es)
2640 {
2641     HINSTANCE hInstance = GetWindowLongA( hwnd, GWL_HINSTANCE );
2642         CHAR *textA;
2643         UINT countA, alloc_size;
2644
2645         if (!(es->style & ES_MULTILINE))
2646                 return 0;
2647
2648         if (es->hloc16)
2649                 return es->hloc16;
2650
2651         if (!LOCAL_HeapSize(hInstance)) {
2652                 if (!LocalInit16(hInstance, 0,
2653                                 GlobalSize16(hInstance))) {
2654                         ERR("could not initialize local heap\n");
2655                         return 0;
2656                 }
2657                 TRACE("local heap initialized\n");
2658         }
2659
2660         countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2661         alloc_size = ROUND_TO_GROW(countA);
2662
2663         TRACE("Allocating 16-bit ANSI alias buffer\n");
2664         if (!(es->hloc16 = LOCAL_Alloc(hInstance, LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size))) {
2665                 ERR("could not allocate new 16 bit buffer\n");
2666                 return 0;
2667         }
2668
2669         if (!(textA = (LPSTR)LOCAL_Lock(hInstance, es->hloc16))) {
2670                 ERR("could not lock new 16 bit buffer\n");
2671                 LOCAL_Free(hInstance, es->hloc16);
2672                 es->hloc16 = 0;
2673                 return 0;
2674         }
2675
2676         WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2677         LOCAL_Unlock(hInstance, es->hloc16);
2678
2679         TRACE("Returning %04X, LocalSize() = %d\n", es->hloc16, LOCAL_Size(hInstance, es->hloc16));
2680         return es->hloc16;
2681 }
2682
2683
2684 /*********************************************************************
2685  *
2686  *      EM_GETLINE
2687  *
2688  */
2689 static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPARAM lParam, BOOL unicode)
2690 {
2691         LPWSTR src;
2692         INT line_len, dst_len;
2693         INT i;
2694
2695         if (es->style & ES_MULTILINE) {
2696                 if (line >= es->line_count)
2697                         return 0;
2698         } else
2699                 line = 0;
2700         i = EDIT_EM_LineIndex(es, line);
2701         src = es->text + i;
2702         line_len = EDIT_EM_LineLength(es, i);
2703         dst_len = *(WORD *)lParam;
2704         if(unicode)
2705         {
2706             LPWSTR dst = (LPWSTR)lParam;
2707             if(dst_len <= line_len)
2708             {
2709                 memcpy(dst, src, dst_len * sizeof(WCHAR));
2710                 return dst_len;
2711             }
2712             else /* Append 0 if enough space */
2713             {
2714                 memcpy(dst, src, line_len * sizeof(WCHAR));
2715                 dst[line_len] = 0;
2716                 return line_len;
2717             }
2718         }
2719         else
2720         {
2721             LPSTR dst = (LPSTR)lParam;
2722             INT ret;
2723             ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, dst, dst_len, NULL, NULL);
2724             if(!ret) /* Insufficient buffer size */
2725                 return dst_len;
2726             if(ret < dst_len) /* Append 0 if enough space */
2727                 dst[ret] = 0;
2728             return ret;
2729         }
2730 }
2731
2732
2733 /*********************************************************************
2734  *
2735  *      EM_GETSEL
2736  *
2737  */
2738 static LRESULT EDIT_EM_GetSel(EDITSTATE *es, LPUINT start, LPUINT end)
2739 {
2740         UINT s = es->selection_start;
2741         UINT e = es->selection_end;
2742
2743         ORDER_UINT(s, e);
2744         if (start)
2745                 *start = s;
2746         if (end)
2747                 *end = e;
2748         return MAKELONG(s, e);
2749 }
2750
2751
2752 /*********************************************************************
2753  *
2754  *      EM_GETTHUMB
2755  *
2756  *      FIXME: is this right ?  (or should it be only VSCROLL)
2757  *      (and maybe only for edit controls that really have their
2758  *      own scrollbars) (and maybe only for multiline controls ?)
2759  *      All in all: very poorly documented
2760  *
2761  */
2762 static LRESULT EDIT_EM_GetThumb(HWND hwnd, EDITSTATE *es)
2763 {
2764         return MAKELONG(EDIT_WM_VScroll(hwnd, es, EM_GETTHUMB16, 0),
2765                 EDIT_WM_HScroll(hwnd, es, EM_GETTHUMB16, 0));
2766 }
2767
2768
2769 /*********************************************************************
2770  *
2771  *      EM_LINEFROMCHAR
2772  *
2773  */
2774 static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
2775 {
2776         INT line;
2777         LINEDEF *line_def;
2778
2779         if (!(es->style & ES_MULTILINE))
2780                 return 0;
2781         if (index > (INT)strlenW(es->text))
2782                 return es->line_count - 1;
2783         if (index == -1)
2784                 index = min(es->selection_start, es->selection_end);
2785
2786         line = 0;
2787         line_def = es->first_line_def;
2788         index -= line_def->length;
2789         while ((index >= 0) && line_def->next) {
2790                 line++;
2791                 line_def = line_def->next;
2792                 index -= line_def->length;
2793         }
2794         return line;
2795 }
2796
2797
2798 /*********************************************************************
2799  *
2800  *      EM_LINEINDEX
2801  *
2802  */
2803 static INT EDIT_EM_LineIndex(EDITSTATE *es, INT line)
2804 {
2805         INT line_index;
2806         LINEDEF *line_def;
2807
2808         if (!(es->style & ES_MULTILINE))
2809                 return 0;
2810         if (line >= es->line_count)
2811                 return -1;
2812
2813         line_index = 0;
2814         line_def = es->first_line_def;
2815         if (line == -1) {
2816                 INT index = es->selection_end - line_def->length;
2817                 while ((index >= 0) && line_def->next) {
2818                         line_index += line_def->length;
2819                         line_def = line_def->next;
2820                         index -= line_def->length;
2821                 }
2822         } else {
2823                 while (line > 0) {
2824                         line_index += line_def->length;
2825                         line_def = line_def->next;
2826                         line--;
2827                 }
2828         }
2829         return line_index;
2830 }
2831
2832
2833 /*********************************************************************
2834  *
2835  *      EM_LINELENGTH
2836  *
2837  */
2838 static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
2839 {
2840         LINEDEF *line_def;
2841
2842         if (!(es->style & ES_MULTILINE))
2843                 return strlenW(es->text);
2844
2845         if (index == -1) {
2846                 /* get the number of remaining non-selected chars of selected lines */
2847                 INT32 l; /* line number */
2848                 INT32 li; /* index of first char in line */
2849                 INT32 count;
2850                 l = EDIT_EM_LineFromChar(es, es->selection_start);
2851                 /* # chars before start of selection area */
2852                 count = es->selection_start - EDIT_EM_LineIndex(es, l);
2853                 l = EDIT_EM_LineFromChar(es, es->selection_end);
2854                 /* # chars after end of selection */
2855                 li = EDIT_EM_LineIndex(es, l);
2856                 count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
2857                 return count;
2858         }
2859         line_def = es->first_line_def;
2860         index -= line_def->length;
2861         while ((index >= 0) && line_def->next) {
2862                 line_def = line_def->next;
2863                 index -= line_def->length;
2864         }
2865         return line_def->net_length;
2866 }
2867
2868
2869 /*********************************************************************
2870  *
2871  *      EM_LINESCROLL
2872  *
2873  *      NOTE: dx is in average character widths, dy - in lines;
2874  *
2875  */
2876 static BOOL EDIT_EM_LineScroll(HWND hwnd, EDITSTATE *es, INT dx, INT dy)
2877 {
2878         if (!(es->style & ES_MULTILINE))
2879                 return FALSE;
2880
2881         dx *= es->char_width;
2882         return EDIT_EM_LineScroll_internal(hwnd, es, dx, dy);
2883 }
2884
2885 /*********************************************************************
2886  *
2887  *      EDIT_EM_LineScroll_internal
2888  *
2889  *      Version of EDIT_EM_LineScroll for internal use.
2890  *      It doesn't refuse if ES_MULTILINE is set and assumes that
2891  *      dx is in pixels, dy - in lines.
2892  *
2893  */
2894 static BOOL EDIT_EM_LineScroll_internal(HWND hwnd, EDITSTATE *es, INT dx, INT dy)
2895 {
2896         INT nyoff;
2897         INT x_offset_in_pixels;
2898
2899         if (es->style & ES_MULTILINE)
2900         {
2901             x_offset_in_pixels = es->x_offset;
2902         }
2903         else
2904         {
2905             dy = 0;
2906             x_offset_in_pixels = SLOWORD(EDIT_EM_PosFromChar(hwnd, es, es->x_offset, FALSE));
2907         }
2908
2909         if (-dx > x_offset_in_pixels)
2910                 dx = -x_offset_in_pixels;
2911         if (dx > es->text_width - x_offset_in_pixels)
2912                 dx = es->text_width - x_offset_in_pixels;
2913         nyoff = max(0, es->y_offset + dy);
2914         if (nyoff >= es->line_count)
2915                 nyoff = es->line_count - 1;
2916         dy = (es->y_offset - nyoff) * es->line_height;
2917         if (dx || dy) {
2918                 RECT rc1;
2919                 RECT rc;
2920
2921                 es->y_offset = nyoff;
2922                 if(es->style & ES_MULTILINE)
2923                     es->x_offset += dx;
2924                 else
2925                     es->x_offset += dx / es->char_width;
2926
2927                 GetClientRect(hwnd, &rc1);
2928                 IntersectRect(&rc, &rc1, &es->format_rect);
2929                 ScrollWindowEx(hwnd, -dx, dy,
2930                                 NULL, &rc, (HRGN)NULL, NULL, SW_INVALIDATE);
2931                 /* force scroll info update */
2932                 EDIT_UpdateScrollInfo(hwnd, es);
2933         }
2934         if (dx && !(es->flags & EF_HSCROLL_TRACK))
2935                 EDIT_NOTIFY_PARENT(hwnd, es, EN_HSCROLL, "EN_HSCROLL");
2936         if (dy && !(es->flags & EF_VSCROLL_TRACK))
2937                 EDIT_NOTIFY_PARENT(hwnd, es, EN_VSCROLL, "EN_VSCROLL");
2938         return TRUE;
2939 }
2940
2941
2942 /*********************************************************************
2943  *
2944  *      EM_POSFROMCHAR
2945  *
2946  */
2947 static LRESULT EDIT_EM_PosFromChar(HWND hwnd, EDITSTATE *es, INT index, BOOL after_wrap)
2948 {
2949         INT len = strlenW(es->text);
2950         INT l;
2951         INT li;
2952         INT x;
2953         INT y = 0;
2954         HDC dc;
2955         HFONT old_font = 0;
2956         SIZE size;
2957
2958         index = min(index, len);
2959         dc = GetDC(hwnd);
2960         if (es->font)
2961                 old_font = SelectObject(dc, es->font);
2962         if (es->style & ES_MULTILINE) {
2963                 l = EDIT_EM_LineFromChar(es, index);
2964                 y = (l - es->y_offset) * es->line_height;
2965                 li = EDIT_EM_LineIndex(es, l);
2966                 if (after_wrap && (li == index) && l) {
2967                         INT l2 = l - 1;
2968                         LINEDEF *line_def = es->first_line_def;
2969                         while (l2) {
2970                                 line_def = line_def->next;
2971                                 l2--;
2972                         }
2973                         if (line_def->ending == END_WRAP) {
2974                                 l--;
2975                                 y -= es->line_height;
2976                                 li = EDIT_EM_LineIndex(es, l);
2977                         }
2978                 }
2979                 x = LOWORD(GetTabbedTextExtentW(dc, es->text + li, index - li,
2980                                 es->tabs_count, es->tabs)) - es->x_offset;
2981         } else {
2982                 LPWSTR text = EDIT_GetPasswordPointer_SL(es);
2983                 if (index < es->x_offset) {
2984                         GetTextExtentPoint32W(dc, text + index,
2985                                         es->x_offset - index, &size);
2986                         x = -size.cx;
2987                 } else {
2988                         GetTextExtentPoint32W(dc, text + es->x_offset,
2989                                         index - es->x_offset, &size);
2990                          x = size.cx;
2991                 }
2992                 y = 0;
2993                 if (es->style & ES_PASSWORD)
2994                         HeapFree(GetProcessHeap(), 0, text);
2995         }
2996         x += es->format_rect.left;
2997         y += es->format_rect.top;
2998         if (es->font)
2999                 SelectObject(dc, old_font);
3000         ReleaseDC(hwnd, dc);
3001         return MAKELONG((INT16)x, (INT16)y);
3002 }
3003
3004
3005 /*********************************************************************
3006  *
3007  *      EM_REPLACESEL
3008  *
3009  *      FIXME: handle ES_NUMBER and ES_OEMCONVERT here
3010  *
3011  */
3012 static void EDIT_EM_ReplaceSel(HWND hwnd, EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update)
3013 {
3014         UINT strl = strlenW(lpsz_replace);
3015         UINT tl = strlenW(es->text);
3016         UINT utl;
3017         UINT s;
3018         UINT e;
3019         UINT i;
3020         LPWSTR p;
3021         HRGN hrgn = 0;
3022
3023         TRACE("%s, can_undo %d, send_update %d\n",
3024             debugstr_w(lpsz_replace), can_undo, send_update);
3025
3026         s = es->selection_start;
3027         e = es->selection_end;
3028
3029         if ((s == e) && !strl)
3030                 return;
3031
3032         ORDER_UINT(s, e);
3033
3034         if (!EDIT_MakeFit(hwnd, es, tl - (e - s) + strl))
3035                 return;
3036
3037         if (e != s) {
3038                 /* there is something to be deleted */
3039                 TRACE("deleting stuff.\n");
3040                 if (can_undo) {
3041                         utl = strlenW(es->undo_text);
3042                         if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
3043                                 /* undo-buffer is extended to the right */
3044                                 EDIT_MakeUndoFit(es, utl + e - s);
3045                                 strncpyW(es->undo_text + utl, es->text + s, e - s + 1);
3046                                 (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
3047                         } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
3048                                 /* undo-buffer is extended to the left */
3049                                 EDIT_MakeUndoFit(es, utl + e - s);
3050                                 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
3051                                         p[e - s] = p[0];
3052                                 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
3053                                         p[i] = (es->text + s)[i];
3054                                 es->undo_position = s;
3055                         } else {
3056                                 /* new undo-buffer */
3057                                 EDIT_MakeUndoFit(es, e - s);
3058                                 strncpyW(es->undo_text, es->text + s, e - s + 1);
3059                                 es->undo_text[e - s] = 0; /* ensure 0 termination */
3060                                 es->undo_position = s;
3061                         }
3062                         /* any deletion makes the old insertion-undo invalid */
3063                         es->undo_insert_count = 0;
3064                 } else
3065                         EDIT_EM_EmptyUndoBuffer(es);
3066
3067                 /* now delete */
3068                 strcpyW(es->text + s, es->text + e);
3069         }
3070         if (strl) {
3071                 /* there is an insertion */
3072                 if (can_undo) {
3073                         if ((s == es->undo_position) ||
3074                                         ((es->undo_insert_count) &&
3075                                         (s == es->undo_position + es->undo_insert_count)))
3076                                 /*
3077                                  * insertion is new and at delete position or
3078                                  * an extension to either left or right
3079                                  */
3080                                 es->undo_insert_count += strl;
3081                         else {
3082                                 /* new insertion undo */
3083                                 es->undo_position = s;
3084                                 es->undo_insert_count = strl;
3085                                 /* new insertion makes old delete-buffer invalid */
3086                                 *es->undo_text = '\0';
3087                         }
3088                 } else
3089                         EDIT_EM_EmptyUndoBuffer(es);
3090
3091                 /* now insert */
3092                 tl = strlenW(es->text);
3093                 TRACE("inserting stuff (tl %d, strl %d, selstart %d ('%s'), text '%s')\n", tl, strl, s, debugstr_w(es->text + s), debugstr_w(es->text));
3094                 for (p = es->text + tl ; p >= es->text + s ; p--)
3095                         p[strl] = p[0];
3096                 for (i = 0 , p = es->text + s ; i < strl ; i++)
3097                         p[i] = lpsz_replace[i];
3098                 if(es->style & ES_UPPERCASE)
3099                         CharUpperBuffW(p, strl);
3100                 else if(es->style & ES_LOWERCASE)
3101                         CharLowerBuffW(p, strl);
3102                 s += strl;
3103         }
3104         if (es->style & ES_MULTILINE)
3105         {
3106                 INT s = min(es->selection_start, es->selection_end);
3107
3108                 hrgn = CreateRectRgn(0, 0, 0, 0);
3109                 EDIT_BuildLineDefs_ML(hwnd, es, s, s + strl,
3110                                 strl - abs(es->selection_end - es->selection_start), hrgn);
3111         }
3112         else
3113             EDIT_CalcLineWidth_SL(hwnd, es);
3114
3115         EDIT_EM_SetSel(hwnd, es, s, s, FALSE);
3116         es->flags |= EF_MODIFIED;
3117         if (send_update) es->flags |= EF_UPDATE;
3118         EDIT_EM_ScrollCaret(hwnd, es);
3119
3120         /* force scroll info update */
3121         EDIT_UpdateScrollInfo(hwnd, es);
3122
3123         if (hrgn)
3124         {
3125                 EDIT_UpdateTextRegion(hwnd, es, hrgn, TRUE);
3126                 DeleteObject(hrgn);
3127         }
3128         else
3129         EDIT_UpdateText(hwnd, es, NULL, TRUE);
3130
3131         if(es->flags & EF_UPDATE)
3132         {
3133             es->flags &= ~EF_UPDATE;
3134             EDIT_NOTIFY_PARENT(hwnd, es, EN_CHANGE, "EN_CHANGE");
3135         }
3136 }
3137
3138
3139 /*********************************************************************
3140  *
3141  *      EM_SCROLL
3142  *
3143  */
3144 static LRESULT EDIT_EM_Scroll(HWND hwnd, EDITSTATE *es, INT action)
3145 {
3146         INT dy;
3147
3148         if (!(es->style & ES_MULTILINE))
3149                 return (LRESULT)FALSE;
3150
3151         dy = 0;
3152
3153         switch (action) {
3154         case SB_LINEUP:
3155                 if (es->y_offset)
3156                         dy = -1;
3157                 break;
3158         case SB_LINEDOWN:
3159                 if (es->y_offset < es->line_count - 1)
3160                         dy = 1;
3161                 break;
3162         case SB_PAGEUP:
3163                 if (es->y_offset)
3164                         dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
3165                 break;
3166         case SB_PAGEDOWN:
3167                 if (es->y_offset < es->line_count - 1)
3168                         dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
3169                 break;
3170         default:
3171                 return (LRESULT)FALSE;
3172         }
3173         if (dy) {
3174             INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
3175             /* check if we are going to move too far */
3176             if(es->y_offset + dy > es->line_count - vlc)
3177                 dy = es->line_count - vlc - es->y_offset;
3178
3179             /* Notification is done in EDIT_EM_LineScroll */
3180             if(dy)
3181                 EDIT_EM_LineScroll(hwnd, es, 0, dy);
3182         }
3183         return MAKELONG((INT16)dy, (BOOL16)TRUE);
3184 }
3185
3186
3187 /*********************************************************************
3188  *
3189  *      EM_SCROLLCARET
3190  *
3191  */
3192 static void EDIT_EM_ScrollCaret(HWND hwnd, EDITSTATE *es)
3193 {
3194         if (es->style & ES_MULTILINE) {
3195                 INT l;
3196                 INT li;
3197                 INT vlc;
3198                 INT ww;
3199                 INT cw = es->char_width;
3200                 INT x;
3201                 INT dy = 0;
3202                 INT dx = 0;
3203
3204                 l = EDIT_EM_LineFromChar(es, es->selection_end);
3205                 li = EDIT_EM_LineIndex(es, l);
3206                 x = SLOWORD(EDIT_EM_PosFromChar(hwnd, es, es->selection_end, es->flags & EF_AFTER_WRAP));
3207                 vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
3208                 if (l >= es->y_offset + vlc)
3209                         dy = l - vlc + 1 - es->y_offset;
3210                 if (l < es->y_offset)
3211                         dy = l - es->y_offset;
3212                 ww = es->format_rect.right - es->format_rect.left;
3213                 if (x < es->format_rect.left)
3214                         dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
3215                 if (x > es->format_rect.right)
3216                         dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
3217                 if (dy || dx)
3218                 {
3219                     /* check if we are going to move too far */
3220                     if(es->x_offset + dx + ww > es->text_width)
3221                         dx = es->text_width - ww - es->x_offset;
3222                     if(dx || dy)
3223                         EDIT_EM_LineScroll_internal(hwnd, es, dx, dy);
3224                 }
3225         } else {
3226                 INT x;
3227                 INT goal;
3228                 INT format_width;
3229
3230                 if (!(es->style & ES_AUTOHSCROLL))
3231                         return;
3232
3233                 x = SLOWORD(EDIT_EM_PosFromChar(hwnd, es, es->selection_end, FALSE));
3234                 format_width = es->format_rect.right - es->format_rect.left;
3235                 if (x < es->format_rect.left) {
3236                         goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
3237                         do {
3238                                 es->x_offset--;
3239                                 x = SLOWORD(EDIT_EM_PosFromChar(hwnd, es, es->selection_end, FALSE));
3240                         } while ((x < goal) && es->x_offset);
3241                         /* FIXME: use ScrollWindow() somehow to improve performance */
3242                         EDIT_UpdateText(hwnd, es, NULL, TRUE);
3243                 } else if (x > es->format_rect.right) {
3244                         INT x_last;
3245                         INT len = strlenW(es->text);
3246                         goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
3247                         do {
3248                                 es->x_offset++;
3249                                 x = SLOWORD(EDIT_EM_PosFromChar(hwnd, es, es->selection_end, FALSE));
3250                                 x_last = SLOWORD(EDIT_EM_PosFromChar(hwnd, es, len, FALSE));
3251                         } while ((x > goal) && (x_last > es->format_rect.right));
3252                         /* FIXME: use ScrollWindow() somehow to improve performance */
3253                         EDIT_UpdateText(hwnd, es, NULL, TRUE);
3254                 }
3255         }
3256
3257     if(es->flags & EF_FOCUSED)
3258         EDIT_SetCaretPos(hwnd, es, es->selection_end, es->flags & EF_AFTER_WRAP);
3259 }
3260
3261
3262 /*********************************************************************
3263  *
3264  *      EM_SETHANDLE
3265  *
3266  *      FIXME:  ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
3267  *
3268  */
3269 static void EDIT_EM_SetHandle(HWND hwnd, EDITSTATE *es, HLOCAL hloc)
3270 {
3271     HINSTANCE hInstance = GetWindowLongA( hwnd, GWL_HINSTANCE );
3272
3273         if (!(es->style & ES_MULTILINE))
3274                 return;
3275
3276         if (!hloc) {
3277                 WARN("called with NULL handle\n");
3278                 return;
3279         }
3280
3281         EDIT_UnlockBuffer(hwnd, es, TRUE);
3282
3283         if(es->hloc16)
3284         {
3285             LOCAL_Free(hInstance, es->hloc16);
3286             es->hloc16 = (HLOCAL16)NULL;
3287         }
3288
3289         if(es->is_unicode)
3290         {
3291             if(es->hloc32A)
3292             {
3293                 LocalFree(es->hloc32A);
3294                 es->hloc32A = (HLOCAL)NULL;
3295             }
3296             es->hloc32W = hloc;
3297         }
3298         else
3299         {
3300             INT countW, countA;
3301             HLOCAL hloc32W_new;
3302             WCHAR *textW;
3303             CHAR *textA;
3304
3305             countA = LocalSize(hloc);
3306             textA = LocalLock(hloc);
3307             countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
3308             if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
3309             {
3310                 ERR("Could not allocate new unicode buffer\n");
3311                 return;
3312             }
3313             textW = LocalLock(hloc32W_new);
3314             MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
3315             LocalUnlock(hloc32W_new);
3316             LocalUnlock(hloc);
3317
3318             if(es->hloc32W)
3319                 LocalFree(es->hloc32W);
3320
3321             es->hloc32W = hloc32W_new;
3322             es->hloc32A = hloc;
3323         }
3324
3325         es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
3326
3327         EDIT_LockBuffer(hwnd, es);
3328
3329         es->x_offset = es->y_offset = 0;
3330         es->selection_start = es->selection_end = 0;
3331         EDIT_EM_EmptyUndoBuffer(es);
3332         es->flags &= ~EF_MODIFIED;
3333         es->flags &= ~EF_UPDATE;
3334         EDIT_BuildLineDefs_ML(hwnd, es, 0, strlenW(es->text), 0, (HRGN)0);
3335         EDIT_UpdateText(hwnd, es, NULL, TRUE);
3336         EDIT_EM_ScrollCaret(hwnd, es);
3337         /* force scroll info update */
3338         EDIT_UpdateScrollInfo(hwnd, es);
3339 }
3340
3341
3342 /*********************************************************************
3343  *
3344  *      EM_SETHANDLE16
3345  *
3346  *      FIXME:  ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
3347  *
3348  */
3349 static void EDIT_EM_SetHandle16(HWND hwnd, EDITSTATE *es, HLOCAL16 hloc)
3350 {
3351     HINSTANCE hInstance = GetWindowLongA( hwnd, GWL_HINSTANCE );
3352         INT countW, countA;
3353         HLOCAL hloc32W_new;
3354         WCHAR *textW;
3355         CHAR *textA;
3356
3357         if (!(es->style & ES_MULTILINE))
3358                 return;
3359
3360         if (!hloc) {
3361                 WARN("called with NULL handle\n");
3362                 return;
3363         }
3364
3365         EDIT_UnlockBuffer(hwnd, es, TRUE);
3366
3367         if(es->hloc32A)
3368         {
3369             LocalFree(es->hloc32A);
3370             es->hloc32A = (HLOCAL)NULL;
3371         }
3372
3373         countA = LOCAL_Size(hInstance, hloc);
3374         textA = LOCAL_Lock(hInstance, hloc);
3375         countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
3376         if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
3377         {
3378             ERR("Could not allocate new unicode buffer\n");
3379             return;
3380         }
3381         textW = LocalLock(hloc32W_new);
3382         MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
3383         LocalUnlock(hloc32W_new);
3384         LOCAL_Unlock(hInstance, hloc);
3385
3386         if(es->hloc32W)
3387             LocalFree(es->hloc32W);
3388
3389         es->hloc32W = hloc32W_new;
3390         es->hloc16 = hloc;
3391
3392         es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
3393
3394         EDIT_LockBuffer(hwnd, es);
3395
3396         es->x_offset = es->y_offset = 0;
3397         es->selection_start = es->selection_end = 0;
3398         EDIT_EM_EmptyUndoBuffer(es);
3399         es->flags &= ~EF_MODIFIED;
3400         es->flags &= ~EF_UPDATE;
3401         EDIT_BuildLineDefs_ML(hwnd, es, 0, strlenW(es->text), 0, (HRGN)0);
3402         EDIT_UpdateText(hwnd, es, NULL, TRUE);
3403         EDIT_EM_ScrollCaret(hwnd, es);
3404         /* force scroll info update */
3405         EDIT_UpdateScrollInfo(hwnd, es);
3406 }
3407
3408
3409 /*********************************************************************
3410  *
3411  *      EM_SETLIMITTEXT
3412  *
3413  *      FIXME: in WinNT maxsize is 0x7FFFFFFF / 0xFFFFFFFF
3414  *      However, the windows version is not complied to yet in all of edit.c
3415  *
3416  *  Additionally as the wrapper for RichEdit controls we need larger buffers
3417  *  at present -1 will represent nolimit
3418  */
3419 static void EDIT_EM_SetLimitText(EDITSTATE *es, INT limit)
3420 {
3421     if (limit == 0xFFFFFFFF)
3422         es->buffer_limit = -1;
3423     else if (es->style & ES_MULTILINE) {
3424                 if (limit)
3425                         es->buffer_limit = min(limit, BUFLIMIT_MULTI);
3426                 else
3427                         es->buffer_limit = BUFLIMIT_MULTI;
3428         } else {
3429                 if (limit)
3430                         es->buffer_limit = min(limit, BUFLIMIT_SINGLE);
3431                 else
3432                         es->buffer_limit = BUFLIMIT_SINGLE;
3433         }
3434 }
3435
3436
3437 /*********************************************************************
3438  *
3439  *      EM_SETMARGINS
3440  *
3441  * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
3442  * action wParam despite what the docs say. EC_USEFONTINFO means one third
3443  * of the char's width, according to the new docs.
3444  *
3445  */
3446 static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
3447                                INT left, INT right)
3448 {
3449         if (action & EC_LEFTMARGIN) {
3450                 if (left != EC_USEFONTINFO)
3451                         es->left_margin = left;
3452                 else
3453                         es->left_margin = es->char_width / 3;
3454         }
3455
3456         if (action & EC_RIGHTMARGIN) {
3457                 if (right != EC_USEFONTINFO)
3458                         es->right_margin = right;
3459                 else
3460                         es->right_margin = es->char_width / 3;
3461         }
3462         TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
3463 }
3464
3465
3466 /*********************************************************************
3467  *
3468  *      EM_SETPASSWORDCHAR
3469  *
3470  */
3471 static void EDIT_EM_SetPasswordChar(HWND hwnd, EDITSTATE *es, WCHAR c)
3472 {
3473     LONG style;
3474
3475         if (es->style & ES_MULTILINE)
3476                 return;
3477
3478         if (es->password_char == c)
3479                 return;
3480
3481         style = GetWindowLongA( hwnd, GWL_STYLE );
3482         es->password_char = c;
3483         if (c) {
3484             SetWindowLongA( hwnd, GWL_STYLE, style | ES_PASSWORD );
3485             es->style |= ES_PASSWORD;
3486         } else {
3487             SetWindowLongA( hwnd, GWL_STYLE, style & ~ES_PASSWORD );
3488             es->style &= ~ES_PASSWORD;
3489         }
3490         EDIT_UpdateText(hwnd, es, NULL, TRUE);
3491 }
3492
3493
3494 /*********************************************************************
3495  *
3496  *      EDIT_EM_SetSel
3497  *
3498  *      note:   unlike the specs say: the order of start and end
3499  *              _is_ preserved in Windows.  (i.e. start can be > end)
3500  *              In other words: this handler is OK
3501  *
3502  */
3503 static void EDIT_EM_SetSel(HWND hwnd, EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
3504 {
3505         UINT old_start = es->selection_start;
3506         UINT old_end = es->selection_end;
3507         UINT len = strlenW(es->text);
3508
3509         if (start == (UINT)-1) {
3510                 start = es->selection_end;
3511                 end = es->selection_end;
3512         } else {
3513                 start = min(start, len);
3514                 end = min(end, len);
3515         }
3516         es->selection_start = start;
3517         es->selection_end = end;
3518         if (after_wrap)
3519                 es->flags |= EF_AFTER_WRAP;
3520         else
3521                 es->flags &= ~EF_AFTER_WRAP;
3522 /* This is a little bit more efficient than before, not sure if it can be improved. FIXME? */
3523         ORDER_UINT(start, end);
3524         ORDER_UINT(end, old_end);
3525         ORDER_UINT(start, old_start);
3526         ORDER_UINT(old_start, old_end);
3527         if (end != old_start)
3528         {
3529 /*
3530  * One can also do
3531  *          ORDER_UINT32(end, old_start);
3532  *          EDIT_InvalidateText(hwnd, es, start, end);
3533  *          EDIT_InvalidateText(hwnd, es, old_start, old_end);
3534  * in place of the following if statement.
3535  */
3536             if (old_start > end )
3537             {
3538                 EDIT_InvalidateText(hwnd, es, start, end);
3539                 EDIT_InvalidateText(hwnd, es, old_start, old_end);
3540             }
3541             else
3542             {
3543                 EDIT_InvalidateText(hwnd, es, start, old_start);
3544                 EDIT_InvalidateText(hwnd, es, end, old_end);
3545             }
3546         }
3547         else EDIT_InvalidateText(hwnd, es, start, old_end);
3548 }
3549
3550
3551 /*********************************************************************
3552  *
3553  *      EM_SETTABSTOPS
3554  *
3555  */
3556 static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, LPINT tabs)
3557 {
3558         if (!(es->style & ES_MULTILINE))
3559                 return FALSE;
3560         if (es->tabs)
3561                 HeapFree(GetProcessHeap(), 0, es->tabs);
3562         es->tabs_count = count;
3563         if (!count)
3564                 es->tabs = NULL;
3565         else {
3566                 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
3567                 memcpy(es->tabs, tabs, count * sizeof(INT));
3568         }
3569         return TRUE;
3570 }
3571
3572
3573 /*********************************************************************
3574  *
3575  *      EM_SETTABSTOPS16
3576  *
3577  */
3578 static BOOL EDIT_EM_SetTabStops16(EDITSTATE *es, INT count, LPINT16 tabs)
3579 {
3580         if (!(es->style & ES_MULTILINE))
3581                 return FALSE;
3582         if (es->tabs)
3583                 HeapFree(GetProcessHeap(), 0, es->tabs);
3584         es->tabs_count = count;
3585         if (!count)
3586                 es->tabs = NULL;
3587         else {
3588                 INT i;
3589                 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
3590                 for (i = 0 ; i < count ; i++)
3591                         es->tabs[i] = *tabs++;
3592         }
3593         return TRUE;
3594 }
3595
3596
3597 /*********************************************************************
3598  *
3599  *      EM_SETWORDBREAKPROC
3600  *
3601  */
3602 static void EDIT_EM_SetWordBreakProc(HWND hwnd, EDITSTATE *es, LPARAM lParam)
3603 {
3604         if (es->word_break_proc == (void *)lParam)
3605                 return;
3606
3607         es->word_break_proc = (void *)lParam;
3608         es->word_break_proc16 = NULL;
3609
3610         if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
3611                 EDIT_BuildLineDefs_ML(hwnd, es, 0, strlenW(es->text), 0, (HRGN)0);
3612                 EDIT_UpdateText(hwnd, es, NULL, TRUE);
3613         }
3614 }
3615
3616
3617 /*********************************************************************
3618  *
3619  *      EM_SETWORDBREAKPROC16
3620  *
3621  */
3622 static void EDIT_EM_SetWordBreakProc16(HWND hwnd, EDITSTATE *es, EDITWORDBREAKPROC16 wbp)
3623 {
3624         if (es->word_break_proc16 == wbp)
3625                 return;
3626
3627         es->word_break_proc = NULL;
3628         es->word_break_proc16 = wbp;
3629         if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
3630                 EDIT_BuildLineDefs_ML(hwnd, es, 0, strlenW(es->text), 0, (HRGN)0);
3631                 EDIT_UpdateText(hwnd, es, NULL, TRUE);
3632         }
3633 }
3634
3635
3636 /*********************************************************************
3637  *
3638  *      EM_UNDO / WM_UNDO
3639  *
3640  */
3641 static BOOL EDIT_EM_Undo(HWND hwnd, EDITSTATE *es)
3642 {
3643         INT ulength;
3644         LPWSTR utext;
3645
3646         /* Protect read-only edit control from modification */
3647         if(es->style & ES_READONLY)
3648             return FALSE;
3649
3650         ulength = strlenW(es->undo_text);
3651         utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
3652
3653         strcpyW(utext, es->undo_text);
3654
3655         TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
3656                      es->undo_insert_count, debugstr_w(utext));
3657
3658         EDIT_EM_SetSel(hwnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3659         EDIT_EM_EmptyUndoBuffer(es);
3660         EDIT_EM_ReplaceSel(hwnd, es, TRUE, utext, FALSE);
3661         EDIT_EM_SetSel(hwnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3662         /* send the notification after the selection start and end are set */
3663         EDIT_NOTIFY_PARENT(hwnd, es, EN_CHANGE, "EN_CHANGE");
3664         EDIT_EM_ScrollCaret(hwnd, es);
3665         HeapFree(GetProcessHeap(), 0, utext);
3666
3667         TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
3668                         es->undo_insert_count, debugstr_w(es->undo_text));
3669         return TRUE;
3670 }
3671
3672
3673 /*********************************************************************
3674  *
3675  *      WM_CHAR
3676  *
3677  */
3678 static void EDIT_WM_Char(HWND hwnd, EDITSTATE *es, WCHAR c)
3679 {
3680         BOOL control;
3681
3682         /* Protect read-only edit control from modification */
3683         if(es->style & ES_READONLY)
3684             return;
3685
3686         control = GetKeyState(VK_CONTROL) & 0x8000;
3687
3688         switch (c) {
3689         case '\r':
3690             /* If the edit doesn't want the return and it's not a multiline edit, do nothing */
3691             if(!(es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
3692                 break;
3693         case '\n':
3694                 if (es->style & ES_MULTILINE) {
3695                         if (es->style & ES_READONLY) {
3696                                 EDIT_MoveHome(hwnd, es, FALSE);
3697                                 EDIT_MoveDown_ML(hwnd, es, FALSE);
3698                         } else {
3699                                 static const WCHAR cr_lfW[] = {'\r','\n',0};
3700                                 EDIT_EM_ReplaceSel(hwnd, es, TRUE, cr_lfW, TRUE);
3701                         }
3702                 }
3703                 break;
3704         case '\t':
3705                 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3706                 {
3707                         static const WCHAR tabW[] = {'\t',0};
3708                         EDIT_EM_ReplaceSel(hwnd, es, TRUE, tabW, TRUE);
3709                 }
3710                 break;
3711         case VK_BACK:
3712                 if (!(es->style & ES_READONLY) && !control) {
3713                         if (es->selection_start != es->selection_end)
3714                                 EDIT_WM_Clear(hwnd, es);
3715                         else {
3716                                 /* delete character left of caret */
3717                                 EDIT_EM_SetSel(hwnd, es, (UINT)-1, 0, FALSE);
3718                                 EDIT_MoveBackward(hwnd, es, TRUE);
3719                                 EDIT_WM_Clear(hwnd, es);
3720                         }
3721                 }
3722                 break;
3723         case 0x03: /* ^C */
3724                 SendMessageW(hwnd, WM_COPY, 0, 0);
3725                 break;
3726         case 0x16: /* ^V */
3727                 SendMessageW(hwnd, WM_PASTE, 0, 0);
3728                 break;
3729         case 0x18: /* ^X */
3730                 SendMessageW(hwnd, WM_CUT, 0, 0);
3731                 break;
3732
3733         default:
3734                 if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127)) {
3735                         WCHAR str[2];
3736                         str[0] = c;
3737                         str[1] = '\0';
3738                         EDIT_EM_ReplaceSel(hwnd, es, TRUE, str, TRUE);
3739                 }
3740                 break;
3741         }
3742 }
3743
3744
3745 /*********************************************************************
3746  *
3747  *      WM_COMMAND
3748  *
3749  */
3750 static void EDIT_WM_Command(HWND hwnd, EDITSTATE *es, INT code, INT id, HWND control)
3751 {
3752         if (code || control)
3753                 return;
3754
3755         switch (id) {
3756                 case EM_UNDO:
3757                         EDIT_EM_Undo(hwnd, es);
3758                         break;
3759                 case WM_CUT:
3760                         EDIT_WM_Cut(hwnd, es);
3761                         break;
3762                 case WM_COPY:
3763                         EDIT_WM_Copy(hwnd, es);
3764                         break;
3765                 case WM_PASTE:
3766                         EDIT_WM_Paste(hwnd, es);
3767                         break;
3768                 case WM_CLEAR:
3769                         EDIT_WM_Clear(hwnd, es);
3770                         break;
3771                 case EM_SETSEL:
3772                         EDIT_EM_SetSel(hwnd, es, 0, (UINT)-1, FALSE);
3773                         EDIT_EM_ScrollCaret(hwnd, es);
3774                         break;
3775                 default:
3776                         ERR("unknown menu item, please report\n");
3777                         break;
3778         }
3779 }
3780
3781
3782 /*********************************************************************
3783  *
3784  *      WM_CONTEXTMENU
3785  *
3786  *      Note: the resource files resource/sysres_??.rc cannot define a
3787  *              single popup menu.  Hence we use a (dummy) menubar
3788  *              containing the single popup menu as its first item.
3789  *
3790  *      FIXME: the message identifiers have been chosen arbitrarily,
3791  *              hence we use MF_BYPOSITION.
3792  *              We might as well use the "real" values (anybody knows ?)
3793  *              The menu definition is in resources/sysres_??.rc.
3794  *              Once these are OK, we better use MF_BYCOMMAND here
3795  *              (as we do in EDIT_WM_Command()).
3796  *
3797  */
3798 static void EDIT_WM_ContextMenu(HWND hwnd, EDITSTATE *es, INT x, INT y)
3799 {
3800         HMENU menu = LoadMenuA(GetModuleHandleA("USER32"), "EDITMENU");
3801         HMENU popup = GetSubMenu(menu, 0);
3802         UINT start = es->selection_start;
3803         UINT end = es->selection_end;
3804
3805         ORDER_UINT(start, end);
3806
3807         /* undo */
3808         EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3809         /* cut */
3810         EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3811         /* copy */
3812         EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3813         /* paste */
3814         EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3815         /* delete */
3816         EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3817         /* select all */
3818         EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != strlenW(es->text)) ? MF_ENABLED : MF_GRAYED));
3819
3820         TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, hwnd, NULL);
3821         DestroyMenu(menu);
3822 }
3823
3824
3825 /*********************************************************************
3826  *
3827  *      WM_COPY
3828  *
3829  */
3830 static void EDIT_WM_Copy(HWND hwnd, EDITSTATE *es)
3831 {
3832         INT s = es->selection_start;
3833         INT e = es->selection_end;
3834         HGLOBAL hdst;
3835         LPWSTR dst;
3836
3837         if (e == s)
3838                 return;
3839         ORDER_INT(s, e);
3840         hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (DWORD)(e - s + 1) * sizeof(WCHAR));
3841         dst = GlobalLock(hdst);
3842         strncpyW(dst, es->text + s, e - s);
3843         dst[e - s] = 0; /* ensure 0 termination */
3844         TRACE("%s\n", debugstr_w(dst));
3845         GlobalUnlock(hdst);
3846         OpenClipboard(hwnd);
3847         EmptyClipboard();
3848         SetClipboardData(CF_UNICODETEXT, hdst);
3849         CloseClipboard();
3850 }
3851
3852
3853 /*********************************************************************
3854  *
3855  *      WM_CREATE
3856  *
3857  */
3858 static LRESULT EDIT_WM_Create(HWND hwnd, EDITSTATE *es, LPCWSTR name)
3859 {
3860         TRACE("%s\n", debugstr_w(name));
3861        /*
3862         *       To initialize some final structure members, we call some helper
3863         *       functions.  However, since the EDITSTATE is not consistent (i.e.
3864         *       not fully initialized), we should be very careful which
3865         *       functions can be called, and in what order.
3866         */
3867         EDIT_WM_SetFont(hwnd, es, 0, FALSE);
3868         EDIT_EM_EmptyUndoBuffer(es);
3869
3870        if (name && *name) {
3871            EDIT_EM_ReplaceSel(hwnd, es, FALSE, name, FALSE);
3872            /* if we insert text to the editline, the text scrolls out
3873             * of the window, as the caret is placed after the insert
3874             * pos normally; thus we reset es->selection... to 0 and
3875             * update caret
3876             */
3877            es->selection_start = es->selection_end = 0;
3878            /* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
3879             * Messages are only to be sent when the USER does something to
3880             * change the contents. So I am removing this EN_CHANGE
3881             *
3882             * EDIT_NOTIFY_PARENT(hwnd, es, EN_CHANGE, "EN_CHANGE");
3883             */
3884            EDIT_EM_ScrollCaret(hwnd, es);
3885        }
3886        /* force scroll info update */
3887        EDIT_UpdateScrollInfo(hwnd, es);
3888        return 0;
3889 }
3890
3891
3892 /*********************************************************************
3893  *
3894  *      WM_DESTROY
3895  *
3896  */
3897 static void EDIT_WM_Destroy(HWND hwnd, EDITSTATE *es)
3898 {
3899     HINSTANCE hInstance = GetWindowLongA( hwnd, GWL_HINSTANCE );
3900         LINEDEF *pc, *pp;
3901
3902         if (es->hloc32W) {
3903                 while (LocalUnlock(es->hloc32W)) ;
3904                 LocalFree(es->hloc32W);
3905         }
3906         if (es->hloc32A) {
3907                 while (LocalUnlock(es->hloc32A)) ;
3908                 LocalFree(es->hloc32A);
3909         }
3910         if (es->hloc16) {
3911                 while (LOCAL_Unlock(hInstance, es->hloc16)) ;
3912                 LOCAL_Free(hInstance, es->hloc16);
3913         }
3914
3915         pc = es->first_line_def;
3916         while (pc)
3917         {
3918                 pp = pc->next;
3919                 HeapFree(GetProcessHeap(), 0, pc);
3920                 pc = pp;
3921         }
3922
3923         SetWindowLongA( hwnd, 0, 0 );
3924         HeapFree(GetProcessHeap(), 0, es);
3925 }
3926
3927
3928 /*********************************************************************
3929  *
3930  *      WM_ERASEBKGND
3931  *
3932  */
3933 static LRESULT EDIT_WM_EraseBkGnd(HWND hwnd, EDITSTATE *es, HDC dc)
3934 {
3935         HBRUSH brush;
3936         RECT rc;
3937
3938         if ( get_app_version() >= 0x40000 &&(
3939                     !es->bEnableState || (es->style & ES_READONLY)))
3940                 brush = (HBRUSH)EDIT_SEND_CTLCOLORSTATIC(hwnd, dc);
3941         else
3942                 brush = (HBRUSH)EDIT_SEND_CTLCOLOR(hwnd, dc);
3943
3944         if (!brush)
3945                 brush = (HBRUSH)GetStockObject(WHITE_BRUSH);
3946
3947         GetClientRect(hwnd, &rc);
3948         IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3949         GetClipBox(dc, &rc);
3950         /*
3951          *      FIXME:  specs say that we should UnrealizeObject() the brush,
3952          *              but the specs of UnrealizeObject() say that we shouldn't
3953          *              unrealize a stock object.  The default brush that
3954          *              DefWndProc() returns is ... a stock object.
3955          */
3956         FillRect(dc, &rc, brush);
3957         return -1;
3958 }
3959
3960
3961 /*********************************************************************
3962  *
3963  *      WM_GETTEXT
3964  *
3965  */
3966 static INT EDIT_WM_GetText(EDITSTATE *es, INT count, LPARAM lParam, BOOL unicode)
3967 {
3968     if(!count) return 0;
3969
3970     if(unicode)
3971     {
3972         LPWSTR textW = (LPWSTR)lParam;
3973         lstrcpynW(textW, es->text, count);
3974         return strlenW(textW);
3975     }
3976     else
3977     {
3978         LPSTR textA = (LPSTR)lParam;
3979         if (!WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL))
3980             textA[count - 1] = 0; /* ensure 0 termination */
3981         return strlen(textA);
3982     }
3983 }
3984
3985 /*********************************************************************
3986  *
3987  *      WM_HSCROLL
3988  *
3989  */
3990 static LRESULT EDIT_WM_HScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos)
3991 {
3992         INT dx;
3993         INT fw;
3994
3995         if (!(es->style & ES_MULTILINE))
3996                 return 0;
3997
3998         if (!(es->style & ES_AUTOHSCROLL))
3999                 return 0;
4000
4001         dx = 0;
4002         fw = es->format_rect.right - es->format_rect.left;
4003         switch (action) {
4004         case SB_LINELEFT:
4005                 TRACE("SB_LINELEFT\n");
4006                 if (es->x_offset)
4007                         dx = -es->char_width;
4008                 break;
4009         case SB_LINERIGHT:
4010                 TRACE("SB_LINERIGHT\n");
4011                 if (es->x_offset < es->text_width)
4012                         dx = es->char_width;
4013                 break;
4014         case SB_PAGELEFT:
4015                 TRACE("SB_PAGELEFT\n");
4016                 if (es->x_offset)
4017                         dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4018                 break;
4019         case SB_PAGERIGHT:
4020                 TRACE("SB_PAGERIGHT\n");
4021                 if (es->x_offset < es->text_width)
4022                         dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4023                 break;
4024         case SB_LEFT:
4025                 TRACE("SB_LEFT\n");
4026                 if (es->x_offset)
4027                         dx = -es->x_offset;
4028                 break;
4029         case SB_RIGHT:
4030                 TRACE("SB_RIGHT\n");
4031                 if (es->x_offset < es->text_width)
4032                         dx = es->text_width - es->x_offset;
4033                 break;
4034         case SB_THUMBTRACK:
4035                 TRACE("SB_THUMBTRACK %d\n", pos);
4036                 es->flags |= EF_HSCROLL_TRACK;
4037                 if(es->style & WS_HSCROLL)
4038                     dx = pos - es->x_offset;
4039                 else
4040                 {
4041                     INT fw, new_x;
4042                     /* Sanity check */
4043                     if(pos < 0 || pos > 100) return 0;
4044                     /* Assume default scroll range 0-100 */
4045                     fw = es->format_rect.right - es->format_rect.left;
4046                     new_x = pos * (es->text_width - fw) / 100;
4047                     dx = es->text_width ? (new_x - es->x_offset) : 0;
4048                 }
4049                 break;
4050         case SB_THUMBPOSITION:
4051                 TRACE("SB_THUMBPOSITION %d\n", pos);
4052                 es->flags &= ~EF_HSCROLL_TRACK;
4053                 if(GetWindowLongA( hwnd, GWL_STYLE ) & WS_HSCROLL)
4054                     dx = pos - es->x_offset;
4055                 else
4056                 {
4057                     INT fw, new_x;
4058                     /* Sanity check */
4059                     if(pos < 0 || pos > 100) return 0;
4060                     /* Assume default scroll range 0-100 */
4061                     fw = es->format_rect.right - es->format_rect.left;
4062                     new_x = pos * (es->text_width - fw) / 100;
4063                     dx = es->text_width ? (new_x - es->x_offset) : 0;
4064                 }
4065                 if (!dx) {
4066                         /* force scroll info update */
4067                         EDIT_UpdateScrollInfo(hwnd, es);
4068                         EDIT_NOTIFY_PARENT(hwnd, es, EN_HSCROLL, "EN_HSCROLL");
4069                 }
4070                 break;
4071         case SB_ENDSCROLL:
4072                 TRACE("SB_ENDSCROLL\n");
4073                 break;
4074         /*
4075          *      FIXME : the next two are undocumented !
4076          *      Are we doing the right thing ?
4077          *      At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4078          *      although it's also a regular control message.
4079          */
4080         case EM_GETTHUMB: /* this one is used by NT notepad */
4081         case EM_GETTHUMB16:
4082         {
4083                 LRESULT ret;
4084                 if(GetWindowLongA( hwnd, GWL_STYLE ) & WS_HSCROLL)
4085                     ret = GetScrollPos(hwnd, SB_HORZ);
4086                 else
4087                 {
4088                     /* Assume default scroll range 0-100 */
4089                     INT fw = es->format_rect.right - es->format_rect.left;
4090                     ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
4091                 }
4092                 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4093                 return ret;
4094         }
4095         case EM_LINESCROLL16:
4096                 TRACE("EM_LINESCROLL16\n");
4097                 dx = pos;
4098                 break;
4099
4100         default:
4101                 ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
4102                     action, action);
4103                 return 0;
4104         }
4105         if (dx)
4106         {
4107             INT fw = es->format_rect.right - es->format_rect.left;
4108             /* check if we are going to move too far */
4109             if(es->x_offset + dx + fw > es->text_width)
4110                 dx = es->text_width - fw - es->x_offset;
4111             if(dx)
4112                 EDIT_EM_LineScroll_internal(hwnd, es, dx, 0);
4113         }
4114         return 0;
4115 }
4116
4117
4118 /*********************************************************************
4119  *
4120  *      EDIT_CheckCombo
4121  *
4122  */
4123 static BOOL EDIT_CheckCombo(HWND hwnd, EDITSTATE *es, UINT msg, INT key)
4124 {
4125    HWND hLBox = es->hwndListBox;
4126    HWND hCombo;
4127    BOOL bDropped;
4128    int  nEUI;
4129
4130    if (!hLBox)
4131       return FALSE;
4132
4133    hCombo   = GetParent(hwnd);
4134    bDropped = TRUE;
4135    nEUI     = 0;
4136
4137    TRACE_(combo)("[%04x]: handling msg %04x (%04x)\n",
4138                      hwnd, (UINT16)msg, (UINT16)key);
4139
4140    if (key == VK_UP || key == VK_DOWN)
4141    {
4142       if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
4143          nEUI = 1;
4144
4145       if (msg == WM_KEYDOWN || nEUI)
4146           bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
4147    }
4148
4149    switch (msg)
4150    {
4151       case WM_KEYDOWN:
4152          if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
4153          {
4154             /* make sure ComboLBox pops up */
4155             SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
4156             key = VK_F4;
4157             nEUI = 2;
4158          }
4159
4160          SendMessageW(hLBox, WM_KEYDOWN, (WPARAM)key, 0);
4161          break;
4162
4163       case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
4164          if (nEUI)
4165             SendMessageW(hCombo, CB_SHOWDROPDOWN, bDropped ? FALSE : TRUE, 0);
4166          else
4167             SendMessageW(hLBox, WM_KEYDOWN, (WPARAM)VK_F4, 0);
4168          break;
4169    }
4170
4171    if(nEUI == 2)
4172       SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
4173
4174    return TRUE;
4175 }
4176
4177
4178 /*********************************************************************
4179  *
4180  *      WM_KEYDOWN
4181  *
4182  *      Handling of special keys that don't produce a WM_CHAR
4183  *      (i.e. non-printable keys) & Backspace & Delete
4184  *
4185  */
4186 static LRESULT EDIT_WM_KeyDown(HWND hwnd, EDITSTATE *es, INT key)
4187 {
4188         BOOL shift;
4189         BOOL control;
4190
4191         if (GetKeyState(VK_MENU) & 0x8000)
4192                 return 0;
4193
4194         shift = GetKeyState(VK_SHIFT) & 0x8000;
4195         control = GetKeyState(VK_CONTROL) & 0x8000;
4196
4197         switch (key) {
4198         case VK_F4:
4199         case VK_UP:
4200                 if (EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key) || key == VK_F4)
4201                         break;
4202
4203                 /* fall through */
4204         case VK_LEFT:
4205                 if ((es->style & ES_MULTILINE) && (key == VK_UP))
4206                         EDIT_MoveUp_ML(hwnd, es, shift);
4207                 else
4208                         if (control)
4209                                 EDIT_MoveWordBackward(hwnd, es, shift);
4210                         else
4211                                 EDIT_MoveBackward(hwnd, es, shift);
4212                 break;
4213         case VK_DOWN:
4214                 if (EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key))
4215                         break;
4216                 /* fall through */
4217         case VK_RIGHT:
4218                 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
4219                         EDIT_MoveDown_ML(hwnd, es, shift);
4220                 else if (control)
4221                         EDIT_MoveWordForward(hwnd, es, shift);
4222                 else
4223                         EDIT_MoveForward(hwnd, es, shift);
4224                 break;
4225         case VK_HOME:
4226                 EDIT_MoveHome(hwnd, es, shift);
4227                 break;
4228         case VK_END:
4229                 EDIT_MoveEnd(hwnd, es, shift);
4230                 break;
4231         case VK_PRIOR:
4232                 if (es->style & ES_MULTILINE)
4233                         EDIT_MovePageUp_ML(hwnd, es, shift);
4234                 else
4235                         EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key);
4236                 break;
4237         case VK_NEXT:
4238                 if (es->style & ES_MULTILINE)
4239                         EDIT_MovePageDown_ML(hwnd, es, shift);
4240                 else
4241                         EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key);
4242                 break;
4243         case VK_DELETE:
4244                 if (!(es->style & ES_READONLY) && !(shift && control)) {
4245                         if (es->selection_start != es->selection_end) {
4246                                 if (shift)
4247                                         EDIT_WM_Cut(hwnd, es);
4248                                 else
4249                                         EDIT_WM_Clear(hwnd, es);
4250                         } else {
4251                                 if (shift) {
4252                                         /* delete character left of caret */
4253                                         EDIT_EM_SetSel(hwnd, es, (UINT)-1, 0, FALSE);
4254                                         EDIT_MoveBackward(hwnd, es, TRUE);
4255                                         EDIT_WM_Clear(hwnd, es);
4256                                 } else if (control) {
4257                                         /* delete to end of line */
4258                                         EDIT_EM_SetSel(hwnd, es, (UINT)-1, 0, FALSE);
4259                                         EDIT_MoveEnd(hwnd, es, TRUE);
4260                                         EDIT_WM_Clear(hwnd, es);
4261                                 } else {
4262                                         /* delete character right of caret */
4263                                         EDIT_EM_SetSel(hwnd, es, (UINT)-1, 0, FALSE);
4264                                         EDIT_MoveForward(hwnd, es, TRUE);
4265                                         EDIT_WM_Clear(hwnd, es);
4266                                 }
4267                         }
4268                 }
4269                 break;
4270         case VK_INSERT:
4271                 if (shift) {
4272                         if (!(es->style & ES_READONLY))
4273                                 EDIT_WM_Paste(hwnd, es);
4274                 } else if (control)
4275                         EDIT_WM_Copy(hwnd, es);
4276                 break;
4277         case VK_RETURN:
4278             /* If the edit doesn't want the return send a message to the default object */
4279             if(!(es->style & ES_WANTRETURN))
4280             {
4281                 HWND hwndParent = GetParent(hwnd);
4282                 DWORD dw = SendMessageW( hwndParent, DM_GETDEFID, 0, 0 );
4283                 if (HIWORD(dw) == DC_HASDEFID)
4284                 {
4285                     SendMessageW( hwndParent, WM_COMMAND,
4286                                   MAKEWPARAM( LOWORD(dw), BN_CLICKED ),
4287                               (LPARAM)GetDlgItem( hwndParent, LOWORD(dw) ) );
4288                 }
4289             }
4290             break;
4291         }
4292         return 0;
4293 }
4294
4295
4296 /*********************************************************************
4297  *
4298  *      WM_KILLFOCUS
4299  *
4300  */
4301 static LRESULT EDIT_WM_KillFocus(HWND hwnd, EDITSTATE *es)
4302 {
4303         es->flags &= ~EF_FOCUSED;
4304         DestroyCaret();
4305         if(!(es->style & ES_NOHIDESEL))
4306                 EDIT_InvalidateText(hwnd, es, es->selection_start, es->selection_end);
4307         EDIT_NOTIFY_PARENT(hwnd, es, EN_KILLFOCUS, "EN_KILLFOCUS");
4308         return 0;
4309 }
4310
4311
4312 /*********************************************************************
4313  *
4314  *      WM_LBUTTONDBLCLK
4315  *
4316  *      The caret position has been set on the WM_LBUTTONDOWN message
4317  *
4318  */
4319 static LRESULT EDIT_WM_LButtonDblClk(HWND hwnd, EDITSTATE *es)
4320 {
4321         INT s;
4322         INT e = es->selection_end;
4323         INT l;
4324         INT li;
4325         INT ll;
4326
4327         if (!(es->flags & EF_FOCUSED))
4328                 return 0;
4329
4330         l = EDIT_EM_LineFromChar(es, e);
4331         li = EDIT_EM_LineIndex(es, l);
4332         ll = EDIT_EM_LineLength(es, e);
4333         s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
4334         e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
4335         EDIT_EM_SetSel(hwnd, es, s, e, FALSE);
4336         EDIT_EM_ScrollCaret(hwnd, es);
4337         return 0;
4338 }
4339
4340
4341 /*********************************************************************
4342  *
4343  *      WM_LBUTTONDOWN
4344  *
4345  */
4346 static LRESULT EDIT_WM_LButtonDown(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
4347 {
4348         INT e;
4349         BOOL after_wrap;
4350
4351         if (!(es->flags & EF_FOCUSED))
4352                 return 0;
4353
4354         es->bCaptureState = TRUE;
4355         SetCapture(hwnd);
4356         EDIT_ConfinePoint(es, &x, &y);
4357         e = EDIT_CharFromPos(hwnd, es, x, y, &after_wrap);
4358         EDIT_EM_SetSel(hwnd, es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
4359         EDIT_EM_ScrollCaret(hwnd, es);
4360         es->region_posx = es->region_posy = 0;
4361         SetTimer(hwnd, 0, 100, NULL);
4362         return 0;
4363 }
4364
4365
4366 /*********************************************************************
4367  *
4368  *      WM_LBUTTONUP
4369  *
4370  */
4371 static LRESULT EDIT_WM_LButtonUp(HWND hwndSelf, EDITSTATE *es)
4372 {
4373         if (es->bCaptureState && GetCapture() == hwndSelf) {
4374                 KillTimer(hwndSelf, 0);
4375                 ReleaseCapture();
4376         }
4377         es->bCaptureState = FALSE;
4378         return 0;
4379 }
4380
4381
4382 /*********************************************************************
4383  *
4384  *      WM_MBUTTONDOWN
4385  *
4386  */
4387 static LRESULT EDIT_WM_MButtonDown(HWND hwnd)
4388 {
4389     SendMessageW(hwnd,WM_PASTE,0,0);
4390     return 0;
4391 }
4392
4393
4394 /*********************************************************************
4395  *
4396  *      WM_MOUSEMOVE
4397  *
4398  */
4399 static LRESULT EDIT_WM_MouseMove(HWND hwnd, EDITSTATE *es, INT x, INT y)
4400 {
4401         INT e;
4402         BOOL after_wrap;
4403         INT prex, prey;
4404
4405         if (GetCapture() != hwnd)
4406                 return 0;
4407
4408         /*
4409          *      FIXME: gotta do some scrolling if outside client
4410          *              area.  Maybe reset the timer ?
4411          */
4412         prex = x; prey = y;
4413         EDIT_ConfinePoint(es, &x, &y);
4414         es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
4415         es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
4416         e = EDIT_CharFromPos(hwnd, es, x, y, &after_wrap);
4417         EDIT_EM_SetSel(hwnd, es, es->selection_start, e, after_wrap);
4418         EDIT_SetCaretPos(hwnd,es,es->selection_end,es->flags & EF_AFTER_WRAP);
4419         return 0;
4420 }
4421
4422
4423 /*********************************************************************
4424  *
4425  *      WM_NCCREATE
4426  *
4427  * See also EDIT_WM_StyleChanged
4428  */
4429 static LRESULT EDIT_WM_NCCreate(HWND hwnd, DWORD style, HWND hwndParent, BOOL unicode)
4430 {
4431         EDITSTATE *es;
4432         UINT alloc_size;
4433
4434         TRACE("Creating %s edit control, style = %08lx\n",
4435                 unicode ? "Unicode" : "ANSI", style);
4436
4437         if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
4438                 return FALSE;
4439         SetWindowLongA( hwnd, 0, (LONG)es );
4440
4441        /*
4442         *      Note: since the EDITSTATE has not been fully initialized yet,
4443         *            we can't use any API calls that may send
4444         *            WM_XXX messages before WM_NCCREATE is completed.
4445         */
4446
4447         es->is_unicode = unicode;
4448         es->style = style;
4449
4450         es->bEnableState = !(style & WS_DISABLED);
4451
4452         /* Save parent, which will be notified by EN_* messages */
4453         es->hwndParent = hwndParent;
4454
4455         if (es->style & ES_COMBO)
4456            es->hwndListBox = GetDlgItem(hwndParent, ID_CB_LISTBOX);
4457
4458         /* Number overrides lowercase overrides uppercase (at least it
4459          * does in Win95).  However I'll bet that ES_NUMBER would be
4460          * invalid under Win 3.1.
4461          */
4462         if (es->style & ES_NUMBER) {
4463                 ; /* do not override the ES_NUMBER */
4464         }  else if (es->style & ES_LOWERCASE) {
4465                 es->style &= ~ES_UPPERCASE;
4466         }
4467         if (es->style & ES_MULTILINE) {
4468                 es->buffer_limit = BUFLIMIT_MULTI;
4469                 if (es->style & WS_VSCROLL)
4470                         es->style |= ES_AUTOVSCROLL;
4471                 if (es->style & WS_HSCROLL)
4472                         es->style |= ES_AUTOHSCROLL;
4473                 es->style &= ~ES_PASSWORD;
4474                 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
4475                         /* Confirmed - RIGHT overrides CENTER */
4476                         if (es->style & ES_RIGHT)
4477                                 es->style &= ~ES_CENTER;
4478                         es->style &= ~WS_HSCROLL;
4479                         es->style &= ~ES_AUTOHSCROLL;
4480                 }
4481
4482                 /* FIXME: for now, all multi line controls are AUTOVSCROLL */
4483                 es->style |= ES_AUTOVSCROLL;
4484         } else {
4485                 es->buffer_limit = BUFLIMIT_SINGLE;
4486                 if (WIN31_LOOK == TWEAK_WineLook ||
4487                     WIN95_LOOK == TWEAK_WineLook) {
4488                         es->style &= ~ES_CENTER;
4489                         es->style &= ~ES_RIGHT;
4490                 } else {
4491                         if (es->style & ES_RIGHT)
4492                                 es->style &= ~ES_CENTER;
4493                 }
4494                 es->style &= ~WS_HSCROLL;
4495                 es->style &= ~WS_VSCROLL;
4496                 es->style &= ~ES_AUTOVSCROLL;
4497                 es->style &= ~ES_WANTRETURN;
4498                 if (es->style & ES_PASSWORD)
4499                         es->password_char = '*';
4500
4501                 /* FIXME: for now, all single line controls are AUTOHSCROLL */
4502                 es->style |= ES_AUTOHSCROLL;
4503         }
4504
4505         alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
4506         if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
4507             return FALSE;
4508         es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
4509
4510         if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
4511                 return FALSE;
4512         es->undo_buffer_size = es->buffer_size;
4513
4514         if (es->style & ES_MULTILINE)
4515                 if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
4516                         return FALSE;
4517         es->line_count = 1;
4518
4519         /*
4520          * In Win95 look and feel, the WS_BORDER style is replaced by the
4521          * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
4522          * control a non client area.  Not always.  This coordinates in some
4523          * way with the window creation code in dialog.c  When making
4524          * modifications please ensure that the code still works for edit
4525          * controls created directly with style 0x50800000, exStyle 0 (
4526          * which should have a single pixel border)
4527          */
4528         if (TWEAK_WineLook != WIN31_LOOK)
4529         {
4530           es->style      &= ~WS_BORDER;
4531         }
4532         else
4533         {
4534           if ((es->style & WS_BORDER) && !(es->style & WS_DLGFRAME))
4535               SetWindowLongA( hwnd, GWL_STYLE,
4536                               GetWindowLongA( hwnd, GWL_STYLE ) & ~WS_BORDER );
4537         }
4538
4539         return TRUE;
4540 }
4541
4542 /*********************************************************************
4543  *
4544  *      WM_PAINT
4545  *
4546  */
4547 static void EDIT_WM_Paint(HWND hwnd, EDITSTATE *es, WPARAM wParam)
4548 {
4549         PAINTSTRUCT ps;
4550         INT i;
4551         HDC dc;
4552         HFONT old_font = 0;
4553         RECT rc;
4554         RECT rcLine;
4555         RECT rcRgn;
4556         BOOL rev = es->bEnableState &&
4557                                 ((es->flags & EF_FOCUSED) ||
4558                                         (es->style & ES_NOHIDESEL));
4559         if (!wParam)
4560             dc = BeginPaint(hwnd, &ps);
4561         else
4562             dc = (HDC) wParam;
4563         if(es->style & WS_BORDER) {
4564                 GetClientRect(hwnd, &rc);
4565                 if(es->style & ES_MULTILINE) {
4566                         if(es->style & WS_HSCROLL) rc.bottom++;
4567                         if(es->style & WS_VSCROLL) rc.right++;
4568                 }
4569                 Rectangle(dc, rc.left, rc.top, rc.right, rc.bottom);
4570         }
4571         IntersectClipRect(dc, es->format_rect.left,
4572                                 es->format_rect.top,
4573                                 es->format_rect.right,
4574                                 es->format_rect.bottom);
4575         if (es->style & ES_MULTILINE) {
4576                 GetClientRect(hwnd, &rc);
4577                 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
4578         }
4579         if (es->font)
4580                 old_font = SelectObject(dc, es->font);
4581         if ( get_app_version() >= 0x40000 &&(
4582                     !es->bEnableState || (es->style & ES_READONLY)))
4583                 EDIT_SEND_CTLCOLORSTATIC(hwnd, dc);
4584         else
4585                 EDIT_SEND_CTLCOLOR(hwnd, dc);
4586
4587         if (!es->bEnableState)
4588                 SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
4589         GetClipBox(dc, &rcRgn);
4590         if (es->style & ES_MULTILINE) {
4591                 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4592                 for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
4593                         EDIT_GetLineRect(hwnd, es, i, 0, -1, &rcLine);
4594                         if (IntersectRect(&rc, &rcRgn, &rcLine))
4595                                 EDIT_PaintLine(hwnd, es, dc, i, rev);
4596                 }
4597         } else {
4598                 EDIT_GetLineRect(hwnd, es, 0, 0, -1, &rcLine);
4599                 if (IntersectRect(&rc, &rcRgn, &rcLine))
4600                         EDIT_PaintLine(hwnd, es, dc, 0, rev);
4601         }
4602         if (es->font)
4603                 SelectObject(dc, old_font);
4604
4605         if (!wParam)
4606             EndPaint(hwnd, &ps);
4607 }
4608
4609
4610 /*********************************************************************
4611  *
4612  *      WM_PASTE
4613  *
4614  */
4615 static void EDIT_WM_Paste(HWND hwnd, EDITSTATE *es)
4616 {
4617         HGLOBAL hsrc;
4618         LPWSTR src;
4619
4620         /* Protect read-only edit control from modification */
4621         if(es->style & ES_READONLY)
4622             return;
4623
4624         OpenClipboard(hwnd);
4625         if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
4626                 src = (LPWSTR)GlobalLock(hsrc);
4627                 EDIT_EM_ReplaceSel(hwnd, es, TRUE, src, TRUE);
4628                 GlobalUnlock(hsrc);
4629         }
4630         CloseClipboard();
4631 }
4632
4633
4634 /*********************************************************************
4635  *
4636  *      WM_SETFOCUS
4637  *
4638  */
4639 static void EDIT_WM_SetFocus(HWND hwnd, EDITSTATE *es)
4640 {
4641         es->flags |= EF_FOCUSED;
4642         CreateCaret(hwnd, 0, 2, es->line_height);
4643         EDIT_SetCaretPos(hwnd, es, es->selection_end,
4644                          es->flags & EF_AFTER_WRAP);
4645         if(!(es->style & ES_NOHIDESEL))
4646                 EDIT_InvalidateText(hwnd, es, es->selection_start, es->selection_end);
4647         ShowCaret(hwnd);
4648         EDIT_NOTIFY_PARENT(hwnd, es, EN_SETFOCUS, "EN_SETFOCUS");
4649 }
4650
4651
4652 /*********************************************************************
4653  *
4654  *      WM_SETFONT
4655  *
4656  * With Win95 look the margins are set to default font value unless
4657  * the system font (font == 0) is being set, in which case they are left
4658  * unchanged.
4659  *
4660  */
4661 static void EDIT_WM_SetFont(HWND hwnd, EDITSTATE *es, HFONT font, BOOL redraw)
4662 {
4663         TEXTMETRICW tm;
4664         HDC dc;
4665         HFONT old_font = 0;
4666         RECT r;
4667
4668         es->font = font;
4669         dc = GetDC(hwnd);
4670         if (font)
4671                 old_font = SelectObject(dc, font);
4672         GetTextMetricsW(dc, &tm);
4673         es->line_height = tm.tmHeight;
4674         es->char_width = tm.tmAveCharWidth;
4675         if (font)
4676                 SelectObject(dc, old_font);
4677         ReleaseDC(hwnd, dc);
4678         if (font && (TWEAK_WineLook > WIN31_LOOK))
4679                 EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
4680                                    EC_USEFONTINFO, EC_USEFONTINFO);
4681
4682         /* Force the recalculation of the format rect for each font change */
4683         GetClientRect(hwnd, &r);
4684         EDIT_SetRectNP(hwnd, es, &r);
4685
4686         if (es->style & ES_MULTILINE)
4687                 EDIT_BuildLineDefs_ML(hwnd, es, 0, strlenW(es->text), 0, (HRGN)0);
4688         else
4689             EDIT_CalcLineWidth_SL(hwnd, es);
4690
4691         if (redraw)
4692                 EDIT_UpdateText(hwnd, es, NULL, TRUE);
4693         if (es->flags & EF_FOCUSED) {
4694                 DestroyCaret();
4695                 CreateCaret(hwnd, 0, 2, es->line_height);
4696                 EDIT_SetCaretPos(hwnd, es, es->selection_end,
4697                                  es->flags & EF_AFTER_WRAP);
4698                 ShowCaret(hwnd);
4699         }
4700 }
4701
4702
4703 /*********************************************************************
4704  *
4705  *      WM_SETTEXT
4706  *
4707  * NOTES
4708  *  For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
4709  *  The modified flag is reset. No notifications are sent.
4710  *
4711  *  For single-line controls, reception of WM_SETTEXT triggers:
4712  *  The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
4713  *
4714  */
4715 static void EDIT_WM_SetText(HWND hwnd, EDITSTATE *es, LPARAM lParam, BOOL unicode)
4716 {
4717     LPWSTR text = NULL;
4718
4719     if(unicode)
4720         text = (LPWSTR)lParam;
4721     else if (lParam)
4722     {
4723         LPCSTR textA = (LPCSTR)lParam;
4724         INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
4725         if((text = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
4726             MultiByteToWideChar(CP_ACP, 0, textA, -1, text, countW);
4727     }
4728
4729         EDIT_EM_SetSel(hwnd, es, 0, (UINT)-1, FALSE);
4730         if (text) {
4731                 TRACE("%s\n", debugstr_w(text));
4732                 EDIT_EM_ReplaceSel(hwnd, es, FALSE, text, FALSE);
4733                 if(!unicode)
4734                     HeapFree(GetProcessHeap(), 0, text);
4735         } else {
4736                 static const WCHAR empty_stringW[] = {0};
4737                 TRACE("<NULL>\n");
4738                 EDIT_EM_ReplaceSel(hwnd, es, FALSE, empty_stringW, FALSE);
4739         }
4740         es->x_offset = 0;
4741         es->flags &= ~EF_MODIFIED;
4742         EDIT_EM_SetSel(hwnd, es, 0, 0, FALSE);
4743         /* Send the notification after the selection start and end have been set
4744          * edit control doesn't send notification on WM_SETTEXT
4745          * if it is multiline, or it is part of combobox
4746          */
4747         if( !((es->style & ES_MULTILINE) || es->hwndListBox))
4748        {
4749             EDIT_NOTIFY_PARENT(hwnd, es, EN_CHANGE, "EN_CHANGE");
4750            EDIT_NOTIFY_PARENT(hwnd, es, EN_UPDATE, "EN_UPDATE");
4751        }
4752         EDIT_EM_ScrollCaret(hwnd, es);
4753 }
4754
4755
4756 /*********************************************************************
4757  *
4758  *      WM_SIZE
4759  *
4760  */
4761 static void EDIT_WM_Size(HWND hwnd, EDITSTATE *es, UINT action, INT width, INT height)
4762 {
4763         if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
4764                 RECT rc;
4765                 TRACE("width = %d, height = %d\n", width, height);
4766                 SetRect(&rc, 0, 0, width, height);
4767                 EDIT_SetRectNP(hwnd, es, &rc);
4768                 EDIT_UpdateText(hwnd, es, NULL, TRUE);
4769         }
4770 }
4771
4772
4773 /*********************************************************************
4774  *
4775  *      WM_STYLECHANGED
4776  *
4777  * This message is sent by SetWindowLong on having changed either the Style
4778  * or the extended style.
4779  *
4780  * We ensure that the window's version of the styles and the EDITSTATE's agree.
4781  *
4782  * See also EDIT_WM_NCCreate
4783  *
4784  * It appears that the Windows version of the edit control allows the style
4785  * (as retrieved by GetWindowLong) to be any value and maintains an internal
4786  * style variable which will generally be different.  In this function we
4787  * update the internal style based on what changed in the externally visible
4788  * style.
4789  *
4790  * Much of this content as based upon the MSDN, especially:
4791  *  Platform SDK Documentation -> User Interface Services ->
4792  *      Windows User Interface -> Edit Controls -> Edit Control Reference ->
4793  *      Edit Control Styles
4794  */
4795 static LRESULT  EDIT_WM_StyleChanged (HWND hwnd,
4796                                       EDITSTATE *es,
4797                                       WPARAM which,
4798                                       const STYLESTRUCT *style)
4799 {
4800         if (GWL_STYLE == which) {
4801                 DWORD style_change_mask;
4802                 DWORD new_style;
4803                 /* Only a subset of changes can be applied after the control
4804                  * has been created.
4805                  */
4806                 style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
4807                                     ES_NUMBER;
4808                 if (es->style & ES_MULTILINE)
4809                         style_change_mask |= ES_WANTRETURN;
4810
4811                 new_style = style->styleNew & style_change_mask;
4812
4813                 /* Number overrides lowercase overrides uppercase (at least it
4814                  * does in Win95).  However I'll bet that ES_NUMBER would be
4815                  * invalid under Win 3.1.
4816                  */
4817                 if (new_style & ES_NUMBER) {
4818                         ; /* do not override the ES_NUMBER */
4819                 }  else if (new_style & ES_LOWERCASE) {
4820                         new_style &= ~ES_UPPERCASE;
4821                 }
4822
4823                 es->style = (es->style & ~style_change_mask) | new_style;
4824         } else if (GWL_EXSTYLE == which) {
4825                 ; /* FIXME - what is needed here */
4826         } else {
4827                 WARN ("Invalid style change %d\n",which);
4828         }
4829
4830         return 0;
4831 }
4832
4833 /*********************************************************************
4834  *
4835  *      WM_SYSKEYDOWN
4836  *
4837  */
4838 static LRESULT EDIT_WM_SysKeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data)
4839 {
4840         if ((key == VK_BACK) && (key_data & 0x2000)) {
4841                 if (EDIT_EM_CanUndo(es))
4842                         EDIT_EM_Undo(hwnd, es);
4843                 return 0;
4844         } else if (key == VK_UP || key == VK_DOWN) {
4845                 if (EDIT_CheckCombo(hwnd, es, WM_SYSKEYDOWN, key))
4846                         return 0;
4847         }
4848         return DefWindowProcW(hwnd, WM_SYSKEYDOWN, (WPARAM)key, (LPARAM)key_data);
4849 }
4850
4851
4852 /*********************************************************************
4853  *
4854  *      WM_TIMER
4855  *
4856  */
4857 static void EDIT_WM_Timer(HWND hwnd, EDITSTATE *es)
4858 {
4859         if (es->region_posx < 0) {
4860                 EDIT_MoveBackward(hwnd, es, TRUE);
4861         } else if (es->region_posx > 0) {
4862                 EDIT_MoveForward(hwnd, es, TRUE);
4863         }
4864 /*
4865  *      FIXME: gotta do some vertical scrolling here, like
4866  *              EDIT_EM_LineScroll(hwnd, 0, 1);
4867  */
4868 }
4869
4870 /*********************************************************************
4871  *
4872  *      WM_VSCROLL
4873  *
4874  */
4875 static LRESULT EDIT_WM_VScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos)
4876 {
4877         INT dy;
4878
4879         if (!(es->style & ES_MULTILINE))
4880                 return 0;
4881
4882         if (!(es->style & ES_AUTOVSCROLL))
4883                 return 0;
4884
4885         dy = 0;
4886         switch (action) {
4887         case SB_LINEUP:
4888         case SB_LINEDOWN:
4889         case SB_PAGEUP:
4890         case SB_PAGEDOWN:
4891                 TRACE("action %d\n", action);
4892                 EDIT_EM_Scroll(hwnd, es, action);
4893                 return 0;
4894         case SB_TOP:
4895                 TRACE("SB_TOP\n");
4896                 dy = -es->y_offset;
4897                 break;
4898         case SB_BOTTOM:
4899                 TRACE("SB_BOTTOM\n");
4900                 dy = es->line_count - 1 - es->y_offset;
4901                 break;
4902         case SB_THUMBTRACK:
4903                 TRACE("SB_THUMBTRACK %d\n", pos);
4904                 es->flags |= EF_VSCROLL_TRACK;
4905                 if(es->style & WS_VSCROLL)
4906                     dy = pos - es->y_offset;
4907                 else
4908                 {
4909                     /* Assume default scroll range 0-100 */
4910                     INT vlc, new_y;
4911                     /* Sanity check */
4912                     if(pos < 0 || pos > 100) return 0;
4913                     vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4914                     new_y = pos * (es->line_count - vlc) / 100;
4915                     dy = es->line_count ? (new_y - es->y_offset) : 0;
4916                     TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4917                             es->line_count, es->y_offset, pos, dy);
4918                 }
4919                 break;
4920         case SB_THUMBPOSITION:
4921                 TRACE("SB_THUMBPOSITION %d\n", pos);
4922                 es->flags &= ~EF_VSCROLL_TRACK;
4923                 if(es->style & WS_VSCROLL)
4924                     dy = pos - es->y_offset;
4925                 else
4926                 {
4927                     /* Assume default scroll range 0-100 */
4928                     INT vlc, new_y;
4929                     /* Sanity check */
4930                     if(pos < 0 || pos > 100) return 0;
4931                     vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4932                     new_y = pos * (es->line_count - vlc) / 100;
4933                     dy = es->line_count ? (new_y - es->y_offset) : 0;
4934                     TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4935                             es->line_count, es->y_offset, pos, dy);
4936                 }
4937                 if (!dy)
4938                 {
4939                         /* force scroll info update */
4940                         EDIT_UpdateScrollInfo(hwnd, es);
4941                         EDIT_NOTIFY_PARENT(hwnd, es, EN_VSCROLL, "EN_VSCROLL");
4942                 }
4943                 break;
4944         case SB_ENDSCROLL:
4945                 TRACE("SB_ENDSCROLL\n");
4946                 break;
4947         /*
4948          *      FIXME : the next two are undocumented !
4949          *      Are we doing the right thing ?
4950          *      At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4951          *      although it's also a regular control message.
4952          */
4953         case EM_GETTHUMB: /* this one is used by NT notepad */
4954         case EM_GETTHUMB16:
4955         {
4956                 LRESULT ret;
4957                 if(GetWindowLongA( hwnd, GWL_STYLE ) & WS_VSCROLL)
4958                     ret = GetScrollPos(hwnd, SB_VERT);
4959                 else
4960                 {
4961                     /* Assume default scroll range 0-100 */
4962                     INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4963                     ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
4964                 }
4965                 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4966                 return ret;
4967         }
4968         case EM_LINESCROLL16:
4969                 TRACE("EM_LINESCROLL16 %d\n", pos);
4970                 dy = pos;
4971                 break;
4972
4973         default:
4974                 ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
4975                     action, action);
4976                 return 0;
4977         }
4978         if (dy)
4979                 EDIT_EM_LineScroll(hwnd, es, 0, dy);
4980         return 0;
4981 }
4982
4983 /*********************************************************************
4984  *
4985  *      EDIT_UpdateText
4986  *
4987  */
4988 static void EDIT_UpdateTextRegion(HWND hwnd, EDITSTATE *es, HRGN hrgn, BOOL bErase)
4989 {
4990     if (es->flags & EF_UPDATE) EDIT_NOTIFY_PARENT(hwnd, es, EN_UPDATE, "EN_UPDATE");
4991     InvalidateRgn(hwnd, hrgn, bErase);
4992 }
4993
4994
4995 /*********************************************************************
4996  *
4997  *      EDIT_UpdateText
4998  *
4999  */
5000 static void EDIT_UpdateText(HWND hwnd, EDITSTATE *es, LPRECT rc, BOOL bErase)
5001 {
5002     if (es->flags & EF_UPDATE) EDIT_NOTIFY_PARENT(hwnd, es, EN_UPDATE, "EN_UPDATE");
5003     InvalidateRect(hwnd, rc, bErase);
5004 }