git.oblomov.eu Git - wine/blob - programs/winhlp32/winhelp.c

   1 /*
   2  * Help Viewer
   3  *
   4  * Copyright    1996 Ulrich Schmid <uschmid@mail.hh.provi.de>
   5  *              2002 Sylvain Petreolle <spetreolle@yahoo.fr>
   6  *              2002, 2008 Eric Pouech <eric.pouech@wanadoo.fr>
   7  *              2004 Ken Belleau <jamez@ivic.qc.ca>
   8  *              2008 Kirill K. Smirnov <lich@math.spbu.ru>
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include <assert.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29 #include <stdlib.h>
  30
  31 #define NONAMELESSUNION
  32 #define NONAMELESSSTRUCT
  33
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "wingdi.h"
  37 #include "winuser.h"
  38 #include "commdlg.h"
  39 #include "winhelp.h"
  40 #include "winhelp_res.h"
  41 #include "shellapi.h"
  42 #include "richedit.h"
  43 #include "commctrl.h"
  44
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(winhelp);
  48
  49 WINHELP_GLOBALS Globals = {3, NULL, TRUE, NULL, NULL, NULL, NULL, NULL, {{{NULL,NULL}},0}, NULL};
  50
  51 #define CTL_ID_BUTTON   0x700
  52 #define CTL_ID_TEXT     0x701
  53
  54
  55 /***********************************************************************
  56  *
  57  *           WINHELP_InitFonts
  58  */
  59 static void WINHELP_InitFonts(HWND hWnd)
  60 {
  61     WINHELP_WINDOW *win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
  62     LOGFONTW logfontlist[] = {
  63         {-10, 0, 0, 0, 400, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, {'H','e','l','v',0}},
  64         {-12, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, {'H','e','l','v',0}},
  65         {-12, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, {'H','e','l','v',0}},
  66         {-12, 0, 0, 0, 400, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, {'H','e','l','v',0}},
  67         {-12, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, {'H','e','l','v',0}},
  68         {-10, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, {'H','e','l','v',0}},
  69         { -8, 0, 0, 0, 400, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, {'H','e','l','v',0}}};
  70 #define FONTS_LEN (sizeof(logfontlist)/sizeof(*logfontlist))
  71
  72     static HFONT fonts[FONTS_LEN];
  73     static BOOL init = 0;
  74
  75     win->fonts_len = FONTS_LEN;
  76     win->fonts = fonts;
  77
  78     if (!init)
  79     {
  80         UINT i;
  81
  82         for (i = 0; i < FONTS_LEN; i++)
  83         {
  84             fonts[i] = CreateFontIndirectW(&logfontlist[i]);
  85         }
  86
  87         init = 1;
  88     }
  89 }
  90
  91 static DWORD CALLBACK WINHELP_RtfStreamIn(DWORD_PTR cookie, BYTE* buff,
  92                                           LONG cb, LONG* pcb)
  93 {
  94     struct RtfData*     rd = (struct RtfData*)cookie;
  95
  96     if (rd->where >= rd->ptr) return 1;
  97     if (rd->where + cb > rd->ptr)
  98         cb = rd->ptr - rd->where;
  99     memcpy(buff, rd->where, cb);
 100     rd->where += cb;
 101     *pcb = cb;
 102     return 0;
 103 }
 104
 105 static void WINHELP_SetupText(HWND hTextWnd, WINHELP_WINDOW* win, ULONG relative)
 106 {
 107     static const WCHAR emptyW[1];
 108     /* At first clear area - needed by EM_POSFROMCHAR/EM_SETSCROLLPOS */
 109     SendMessageW(hTextWnd, WM_SETTEXT, 0, (LPARAM)emptyW);
 110     SendMessageW(hTextWnd, WM_SETREDRAW, FALSE, 0);
 111     SendMessageW(hTextWnd, EM_SETBKGNDCOLOR, 0, (LPARAM)win->info->sr_color);
 112     /* set word-wrap to window size (undocumented) */
 113     SendMessageW(hTextWnd, EM_SETTARGETDEVICE, 0, 0);
 114     if (win->page)
 115     {
 116         struct RtfData  rd;
 117         EDITSTREAM      es;
 118         unsigned        cp = 0;
 119         POINTL          ptl;
 120         POINT           pt;
 121
 122
 123         if (HLPFILE_BrowsePage(win->page, &rd, win->font_scale, relative))
 124         {
 125             rd.where = rd.data;
 126             es.dwCookie = (DWORD_PTR)&rd;
 127             es.dwError = 0;
 128             es.pfnCallback = WINHELP_RtfStreamIn;
 129
 130             SendMessageW(hTextWnd, EM_STREAMIN, SF_RTF, (LPARAM)&es);
 131             cp = rd.char_pos_rel;
 132         }
 133         /* FIXME: else leaking potentially the rd.first_link chain */
 134         HeapFree(GetProcessHeap(), 0, rd.data);
 135         SendMessageW(hTextWnd, EM_POSFROMCHAR, (WPARAM)&ptl, cp ? cp - 1 : 0);
 136         pt.x = 0; pt.y = ptl.y;
 137         SendMessageW(hTextWnd, EM_SETSCROLLPOS, 0, (LPARAM)&pt);
 138     }
 139     SendMessageW(hTextWnd, WM_SETREDRAW, TRUE, 0);
 140     RedrawWindow(hTextWnd, NULL, NULL, RDW_FRAME|RDW_INVALIDATE);
 141 }
 142
 143 /***********************************************************************
 144  *
 145  *           WINHELP_GetOpenFileName
 146  */
 147 BOOL WINHELP_GetOpenFileName(LPSTR lpszFile, int len)
 148 {
 149     OPENFILENAMEA openfilename;
 150     CHAR szDir[MAX_PATH];
 151     CHAR szzFilter[2 * MAX_STRING_LEN + 100];
 152     LPSTR p = szzFilter;
 153
 154     WINE_TRACE("()\n");
 155
 156     LoadStringA(Globals.hInstance, STID_HELP_FILES_HLP, p, MAX_STRING_LEN);
 157     p += strlen(p) + 1;
 158     strcpy(p, "*.hlp");
 159     p += strlen(p) + 1;
 160     LoadStringA(Globals.hInstance, STID_ALL_FILES, p, MAX_STRING_LEN);
 161     p += strlen(p) + 1;
 162     strcpy(p, "*.*");
 163     p += strlen(p) + 1;
 164     *p = '\0';
 165
 166     GetCurrentDirectoryA(sizeof(szDir), szDir);
 167
 168     lpszFile[0]='\0';
 169
 170     openfilename.lStructSize       = sizeof(openfilename);
 171     openfilename.hwndOwner         = (Globals.active_win ? Globals.active_win->hMainWnd : 0);
 172     openfilename.hInstance         = Globals.hInstance;
 173     openfilename.lpstrFilter       = szzFilter;
 174     openfilename.lpstrCustomFilter = 0;
 175     openfilename.nMaxCustFilter    = 0;
 176     openfilename.nFilterIndex      = 1;
 177     openfilename.lpstrFile         = lpszFile;
 178     openfilename.nMaxFile          = len;
 179     openfilename.lpstrFileTitle    = 0;
 180     openfilename.nMaxFileTitle     = 0;
 181     openfilename.lpstrInitialDir   = szDir;
 182     openfilename.lpstrTitle        = 0;
 183     openfilename.Flags             = OFN_ENABLESIZING | OFN_HIDEREADONLY | OFN_READONLY;
 184     openfilename.nFileOffset       = 0;
 185     openfilename.nFileExtension    = 0;
 186     openfilename.lpstrDefExt       = 0;
 187     openfilename.lCustData         = 0;
 188     openfilename.lpfnHook          = 0;
 189     openfilename.lpTemplateName    = 0;
 190
 191     return GetOpenFileNameA(&openfilename);
 192 }
 193
 194 /***********************************************************************
 195  *
 196  *           WINHELP_MessageBoxIDS_s
 197  */
 198 static INT WINHELP_MessageBoxIDS_s(UINT ids_text, LPCSTR str, UINT ids_title, WORD type)
 199 {
 200     CHAR text[MAX_STRING_LEN];
 201     CHAR newtext[MAX_STRING_LEN + MAX_PATH];
 202
 203     LoadStringA(Globals.hInstance, ids_text, text, sizeof(text));
 204     wsprintfA(newtext, text, str);
 205
 206     return MessageBoxA(0, newtext, MAKEINTRESOURCEA(ids_title), type);
 207 }
 208
 209 /***********************************************************************
 210  *
 211  *           WINHELP_LookupHelpFile
 212  */
 213 HLPFILE* WINHELP_LookupHelpFile(LPCSTR lpszFile)
 214 {
 215     HLPFILE*        hlpfile;
 216     char szFullName[MAX_PATH];
 217     char szAddPath[MAX_PATH];
 218     char *p;
 219
 220     /*
 221      * NOTE: This is needed by popup windows only.
 222      * In other cases it's not needed but does not hurt though.
 223      */
 224     if (Globals.active_win && Globals.active_win->page && Globals.active_win->page->file)
 225     {
 226         strcpy(szAddPath, Globals.active_win->page->file->lpszPath);
 227         p = strrchr(szAddPath, '\\');
 228         if (p) *p = 0;
 229     }
 230
 231     /*
 232      * FIXME: Should we swap conditions?
 233      */
 234     if (!SearchPathA(NULL, lpszFile, ".hlp", MAX_PATH, szFullName, NULL) &&
 235         !SearchPathA(szAddPath, lpszFile, ".hlp", MAX_PATH, szFullName, NULL))
 236     {
 237         if (WINHELP_MessageBoxIDS_s(STID_FILE_NOT_FOUND_s, lpszFile, STID_WHERROR,
 238                                     MB_YESNO|MB_ICONQUESTION) != IDYES)
 239             return NULL;
 240         if (!WINHELP_GetOpenFileName(szFullName, MAX_PATH))
 241             return NULL;
 242     }
 243     hlpfile = HLPFILE_ReadHlpFile(szFullName);
 244     if (!hlpfile)
 245         WINHELP_MessageBoxIDS_s(STID_HLPFILE_ERROR_s, lpszFile,
 246                                 STID_WHERROR, MB_OK|MB_ICONSTOP);
 247     return hlpfile;
 248 }
 249
 250 /******************************************************************
 251  *              WINHELP_GetWindowInfo
 252  *
 253  *
 254  */
 255 HLPFILE_WINDOWINFO*     WINHELP_GetWindowInfo(HLPFILE* hlpfile, LPCSTR name)
 256 {
 257     static      HLPFILE_WINDOWINFO      mwi;
 258     unsigned int     i;
 259
 260     if (!name || !name[0])
 261         name = Globals.active_win->info->name;
 262
 263     if (hlpfile)
 264         for (i = 0; i < hlpfile->numWindows; i++)
 265             if (!lstrcmpiA(hlpfile->windows[i].name, name))
 266                 return &hlpfile->windows[i];
 267
 268     if (strcmp(name, "main") != 0)
 269     {
 270         WINE_FIXME("Couldn't find window info for %s\n", name);
 271         assert(0);
 272         return NULL;
 273     }
 274     if (!mwi.name[0])
 275     {
 276         strcpy(mwi.type, "primary");
 277         strcpy(mwi.name, "main");
 278         if (hlpfile && hlpfile->lpszTitle[0])
 279         {
 280             char        tmp[128];
 281             LoadStringA(Globals.hInstance, STID_WINE_HELP, tmp, sizeof(tmp));
 282             snprintf(mwi.caption, sizeof(mwi.caption), "%s %s - %s",
 283                      hlpfile->lpszTitle, tmp, hlpfile->lpszPath);
 284         }
 285         else
 286             LoadStringA(Globals.hInstance, STID_WINE_HELP, mwi.caption, sizeof(mwi.caption));
 287         mwi.origin.x = mwi.origin.y = mwi.size.cx = mwi.size.cy = CW_USEDEFAULT;
 288         mwi.style = SW_SHOW;
 289         mwi.win_style = WS_OVERLAPPEDWINDOW;
 290         mwi.sr_color = mwi.nsr_color = 0xFFFFFF;
 291     }
 292     return &mwi;
 293 }
 294
 295 /******************************************************************
 296  *              HLPFILE_GetPopupWindowInfo
 297  *
 298  *
 299  */
 300 static HLPFILE_WINDOWINFO*     WINHELP_GetPopupWindowInfo(HLPFILE* hlpfile,
 301                                                           WINHELP_WINDOW* parent, LPARAM mouse)
 302 {
 303     static      HLPFILE_WINDOWINFO      wi;
 304
 305     RECT parent_rect;
 306
 307     wi.type[0] = wi.name[0] = wi.caption[0] = '\0';
 308
 309     /* Calculate horizontal size and position of a popup window */
 310     GetWindowRect(parent->hMainWnd, &parent_rect);
 311     wi.size.cx = (parent_rect.right  - parent_rect.left) / 2;
 312     wi.size.cy = 10; /* need a non null value, so that border are taken into account while computing */
 313
 314     wi.origin.x = (short)LOWORD(mouse);
 315     wi.origin.y = (short)HIWORD(mouse);
 316     ClientToScreen(parent->hMainWnd, &wi.origin);
 317     wi.origin.x -= wi.size.cx / 2;
 318     wi.origin.x  = min(wi.origin.x, GetSystemMetrics(SM_CXSCREEN) - wi.size.cx);
 319     wi.origin.x  = max(wi.origin.x, 0);
 320
 321     wi.style = SW_SHOW;
 322     wi.win_style = WS_POPUP | WS_BORDER;
 323     if (parent->page->file->has_popup_color)
 324         wi.sr_color = parent->page->file->popup_color;
 325     else
 326         wi.sr_color = parent->info->sr_color;
 327     wi.nsr_color = 0xFFFFFF;
 328
 329     return &wi;
 330 }
 331
 332 typedef struct
 333 {
 334     WORD size;
 335     WORD command;
 336     LONG data;
 337     LONG reserved;
 338     WORD ofsFilename;
 339     WORD ofsData;
 340 } WINHELP,*LPWINHELP;
 341
 342 static BOOL WINHELP_HasWorkingWindow(void)
 343 {
 344     if (!Globals.active_win) return FALSE;
 345     if (Globals.active_win->next || Globals.win_list != Globals.active_win) return TRUE;
 346     return Globals.active_win->page != NULL && Globals.active_win->page->file != NULL;
 347 }
 348
 349 /******************************************************************
 350  *              WINHELP_HandleCommand
 351  *
 352  *
 353  */
 354 static LRESULT  WINHELP_HandleCommand(HWND hSrcWnd, LPARAM lParam)
 355 {
 356     COPYDATASTRUCT*     cds = (COPYDATASTRUCT*)lParam;
 357     WINHELP*            wh;
 358
 359     if (cds->dwData != 0xA1DE505)
 360     {
 361         WINE_FIXME("Wrong magic number (%08lx)\n", cds->dwData);
 362         return 0;
 363     }
 364
 365     wh = cds->lpData;
 366
 367     if (wh)
 368     {
 369         char*   ptr = (wh->ofsFilename) ? (LPSTR)wh + wh->ofsFilename : NULL;
 370
 371         WINE_TRACE("Got[%u]: cmd=%u data=%08x fn=%s\n",
 372                    wh->size, wh->command, wh->data, ptr);
 373         switch (wh->command)
 374         {
 375         case HELP_CONTEXT:
 376             if (ptr)
 377             {
 378                 MACRO_JumpContext(ptr, "main", wh->data);
 379             }
 380             if (!WINHELP_HasWorkingWindow()) MACRO_Exit();
 381             break;
 382         case HELP_QUIT:
 383             MACRO_Exit();
 384             break;
 385         case HELP_CONTENTS:
 386             if (ptr)
 387             {
 388                 MACRO_JumpContents(ptr, "main");
 389             }
 390             if (!WINHELP_HasWorkingWindow()) MACRO_Exit();
 391             break;
 392         case HELP_HELPONHELP:
 393             MACRO_HelpOn();
 394             if (!WINHELP_HasWorkingWindow()) MACRO_Exit();
 395             break;
 396         /* case HELP_SETINDEX: */
 397         case HELP_SETCONTENTS:
 398             if (ptr)
 399             {
 400                 MACRO_SetContents(ptr, wh->data);
 401             }
 402             break;
 403         case HELP_CONTEXTPOPUP:
 404             if (ptr)
 405             {
 406                 MACRO_PopupContext(ptr, wh->data);
 407             }
 408             break;
 409         /* case HELP_FORCEFILE:*/
 410         /* case HELP_CONTEXTMENU: */
 411         case HELP_FINDER:
 412             /* in fact, should be the topic dialog box */
 413             WINE_FIXME("HELP_FINDER: stub\n");
 414             if (ptr)
 415             {
 416                 MACRO_JumpHash(ptr, "main", 0);
 417             }
 418             break;
 419         /* case HELP_WM_HELP: */
 420         /* case HELP_SETPOPUP_POS: */
 421         /* case HELP_KEY: */
 422         /* case HELP_COMMAND: */
 423         /* case HELP_PARTIALKEY: */
 424         /* case HELP_MULTIKEY: */
 425         /* case HELP_SETWINPOS: */
 426         default:
 427             WINE_FIXME("Unhandled command (%x) for remote winhelp control\n", wh->command);
 428             break;
 429         }
 430     }
 431     /* Always return success for now */
 432     return 1;
 433 }
 434
 435 void            WINHELP_LayoutMainWindow(WINHELP_WINDOW* win)
 436 {
 437     RECT        rect, button_box_rect;
 438     INT         text_top = 0;
 439     HWND        hButtonBoxWnd = GetDlgItem(win->hMainWnd, CTL_ID_BUTTON);
 440     HWND        hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
 441
 442     GetClientRect(win->hMainWnd, &rect);
 443
 444     /* Update button box and text Window */
 445     SetWindowPos(hButtonBoxWnd, HWND_TOP,
 446                  rect.left, rect.top,
 447                  rect.right - rect.left,
 448                  rect.bottom - rect.top, 0);
 449
 450     if (GetWindowRect(hButtonBoxWnd, &button_box_rect))
 451         text_top = rect.top + button_box_rect.bottom - button_box_rect.top;
 452
 453     SetWindowPos(hTextWnd, HWND_TOP,
 454                  rect.left, text_top,
 455                  rect.right - rect.left,
 456                  rect.bottom - text_top, 0);
 457
 458 }
 459
 460 /******************************************************************
 461  *              WINHELP_DeleteButtons
 462  *
 463  */
 464 static void WINHELP_DeleteButtons(WINHELP_WINDOW* win)
 465 {
 466     WINHELP_BUTTON*     b;
 467     WINHELP_BUTTON*     bp;
 468
 469     for (b = win->first_button; b; b = bp)
 470     {
 471         DestroyWindow(b->hWnd);
 472         bp = b->next;
 473         HeapFree(GetProcessHeap(), 0, b);
 474     }
 475     win->first_button = NULL;
 476 }
 477
 478 /******************************************************************
 479  *              WINHELP_DeleteBackSet
 480  *
 481  */
 482 void WINHELP_DeleteBackSet(WINHELP_WINDOW* win)
 483 {
 484     unsigned int i;
 485
 486     for (i = 0; i < win->back.index; i++)
 487     {
 488         HLPFILE_FreeHlpFile(win->back.set[i].page->file);
 489         win->back.set[i].page = NULL;
 490     }
 491     win->back.index = 0;
 492 }
 493
 494 /******************************************************************
 495  *             WINHELP_DeletePageLinks
 496  *
 497  */
 498 static void WINHELP_DeletePageLinks(HLPFILE_PAGE* page)
 499 {
 500     HLPFILE_LINK*       curr;
 501     HLPFILE_LINK*       next;
 502
 503     for (curr = page->first_link; curr; curr = next)
 504     {
 505         next = curr->next;
 506         HeapFree(GetProcessHeap(), 0, curr);
 507     }
 508 }
 509
 510 /***********************************************************************
 511  *
 512  *           WINHELP_GrabWindow
 513  */
 514 WINHELP_WINDOW* WINHELP_GrabWindow(WINHELP_WINDOW* win)
 515 {
 516     WINE_TRACE("Grab %p#%d++\n", win, win->ref_count);
 517     win->ref_count++;
 518     return win;
 519 }
 520
 521 /***********************************************************************
 522  *
 523  *           WINHELP_RelaseWindow
 524  */
 525 BOOL WINHELP_ReleaseWindow(WINHELP_WINDOW* win)
 526 {
 527     WINE_TRACE("Release %p#%d--\n", win, win->ref_count);
 528
 529     if (!--win->ref_count)
 530     {
 531         DestroyWindow(win->hMainWnd);
 532         return FALSE;
 533     }
 534     return TRUE;
 535 }
 536
 537 /***********************************************************************
 538  *
 539  *           WINHELP_DeleteWindow
 540  */
 541 static void WINHELP_DeleteWindow(WINHELP_WINDOW* win)
 542 {
 543     WINHELP_WINDOW**    w;
 544     BOOL bExit;
 545     HWND hTextWnd;
 546
 547     for (w = &Globals.win_list; *w; w = &(*w)->next)
 548     {
 549         if (*w == win)
 550         {
 551             *w = win->next;
 552             break;
 553         }
 554     }
 555     bExit = (Globals.wVersion >= 4 && !lstrcmpiA(win->info->name, "main"));
 556
 557     if (Globals.active_win == win)
 558     {
 559         Globals.active_win = Globals.win_list;
 560         if (Globals.win_list)
 561             SetActiveWindow(Globals.win_list->hMainWnd);
 562     }
 563
 564     if (win == Globals.active_popup)
 565         Globals.active_popup = NULL;
 566
 567     hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
 568     SetWindowLongPtrA(hTextWnd, GWLP_WNDPROC, (LONG_PTR)win->origRicheditWndProc);
 569
 570     WINHELP_DeleteButtons(win);
 571
 572     if (win->page) WINHELP_DeletePageLinks(win->page);
 573     if (win->hHistoryWnd) DestroyWindow(win->hHistoryWnd);
 574
 575     DeleteObject(win->hBrush);
 576
 577     WINHELP_DeleteBackSet(win);
 578
 579     if (win->page) HLPFILE_FreeHlpFile(win->page->file);
 580     HeapFree(GetProcessHeap(), 0, win);
 581
 582     if (bExit) MACRO_Exit();
 583     if (!Globals.win_list)
 584         PostQuitMessage(0);
 585 }
 586
 587 static char* WINHELP_GetCaption(WINHELP_WNDPAGE* wpage)
 588 {
 589     if (wpage->wininfo->caption[0]) return wpage->wininfo->caption;
 590     return wpage->page->file->lpszTitle;
 591 }
 592
 593 static void WINHELP_RememberPage(WINHELP_WINDOW* win, WINHELP_WNDPAGE* wpage)
 594 {
 595     unsigned        num;
 596
 597     if (!Globals.history.index || Globals.history.set[0].page != wpage->page)
 598     {
 599         num = sizeof(Globals.history.set) / sizeof(Globals.history.set[0]);
 600         /* we're full, remove latest entry */
 601         if (Globals.history.index == num)
 602         {
 603             HLPFILE_FreeHlpFile(Globals.history.set[num - 1].page->file);
 604             Globals.history.index--;
 605         }
 606         memmove(&Globals.history.set[1], &Globals.history.set[0],
 607                 Globals.history.index * sizeof(Globals.history.set[0]));
 608         Globals.history.set[0] = *wpage;
 609         Globals.history.index++;
 610         wpage->page->file->wRefCount++;
 611     }
 612     if (win->hHistoryWnd) InvalidateRect(win->hHistoryWnd, NULL, TRUE);
 613
 614     num = sizeof(win->back.set) / sizeof(win->back.set[0]);
 615     if (win->back.index == num)
 616     {
 617         /* we're full, remove latest entry */
 618         HLPFILE_FreeHlpFile(win->back.set[0].page->file);
 619         memmove(&win->back.set[0], &win->back.set[1],
 620                 (num - 1) * sizeof(win->back.set[0]));
 621         win->back.index--;
 622     }
 623     win->back.set[win->back.index++] = *wpage;
 624     wpage->page->file->wRefCount++;
 625 }
 626
 627 /***********************************************************************
 628  *
 629  *           WINHELP_FindLink
 630  */
 631 static HLPFILE_LINK* WINHELP_FindLink(WINHELP_WINDOW* win, LPARAM pos)
 632 {
 633     HLPFILE_LINK*           link;
 634     POINTL                  mouse_ptl, char_ptl, char_next_ptl;
 635     DWORD                   cp;
 636
 637     if (!win->page) return NULL;
 638
 639     mouse_ptl.x = (short)LOWORD(pos);
 640     mouse_ptl.y = (short)HIWORD(pos);
 641     cp = SendMessageW(GetDlgItem(win->hMainWnd, CTL_ID_TEXT), EM_CHARFROMPOS,
 642                       0, (LPARAM)&mouse_ptl);
 643
 644     for (link = win->page->first_link; link; link = link->next)
 645     {
 646         if (link->cpMin <= cp && cp <= link->cpMax)
 647         {
 648             /* check whether we're at end of line */
 649             SendMessageW(GetDlgItem(win->hMainWnd, CTL_ID_TEXT), EM_POSFROMCHAR,
 650                          (LPARAM)&char_ptl, cp);
 651             SendMessageW(GetDlgItem(win->hMainWnd, CTL_ID_TEXT), EM_POSFROMCHAR,
 652                          (LPARAM)&char_next_ptl, cp + 1);
 653             if (link->bHotSpot)
 654             {
 655                 HLPFILE_HOTSPOTLINK*    hslink = (HLPFILE_HOTSPOTLINK*)link;
 656                 if ((mouse_ptl.x < char_ptl.x + hslink->x) ||
 657                     (mouse_ptl.x >= char_ptl.x + hslink->x + hslink->width) ||
 658                     (mouse_ptl.y < char_ptl.y + hslink->y) ||
 659                     (mouse_ptl.y >= char_ptl.y + hslink->y + hslink->height))
 660                     continue;
 661                 break;
 662             }
 663             if (char_next_ptl.y != char_ptl.y || mouse_ptl.x >= char_next_ptl.x)
 664                 link = NULL;
 665             break;
 666         }
 667     }
 668     return link;
 669 }
 670
 671 static LRESULT CALLBACK WINHELP_RicheditWndProc(HWND hWnd, UINT msg,
 672                                                 WPARAM wParam, LPARAM lParam)
 673 {
 674     WINHELP_WINDOW *win = (WINHELP_WINDOW*) GetWindowLongPtrW(GetParent(hWnd), 0);
 675     DWORD messagePos;
 676     POINT pt;
 677     switch(msg)
 678     {
 679         case WM_SETCURSOR:
 680             messagePos = GetMessagePos();
 681             pt.x = (short)LOWORD(messagePos);
 682             pt.y = (short)HIWORD(messagePos);
 683             ScreenToClient(hWnd, &pt);
 684             if (win->page && WINHELP_FindLink(win, MAKELPARAM(pt.x, pt.y)))
 685             {
 686                 SetCursor(win->hHandCur);
 687                 return 0;
 688             }
 689             /* fall through */
 690         default:
 691             return CallWindowProcA(win->origRicheditWndProc, hWnd, msg, wParam, lParam);
 692     }
 693 }
 694
 695 /***********************************************************************
 696  *
 697  *           WINHELP_CreateHelpWindow
 698  */
 699 BOOL WINHELP_CreateHelpWindow(WINHELP_WNDPAGE* wpage, int nCmdShow, BOOL remember)
 700 {
 701     WINHELP_WINDOW*     win = NULL;
 702     BOOL                bPrimary, bPopup, bReUsed = FALSE;
 703     HICON               hIcon;
 704     HWND                hTextWnd = NULL;
 705
 706     bPrimary = !lstrcmpiA(wpage->wininfo->name, "main");
 707     bPopup = !bPrimary && (wpage->wininfo->win_style & WS_POPUP);
 708
 709     if (!bPopup)
 710     {
 711         for (win = Globals.win_list; win; win = win->next)
 712         {
 713             if (!lstrcmpiA(win->info->name, wpage->wininfo->name))
 714             {
 715                 if (win->page == wpage->page && win->info == wpage->wininfo)
 716                 {
 717                     /* see #22979, some hlp files have a macro (run at page opening), which
 718                      * jumps to the very same page
 719                      * Exit gracefully in that case
 720                      */
 721                     return TRUE;
 722                 }
 723                 WINHELP_DeleteButtons(win);
 724                 bReUsed = TRUE;
 725                 SetWindowTextA(win->hMainWnd, WINHELP_GetCaption(wpage));
 726                 if (win->info != wpage->wininfo)
 727                 {
 728                     POINT   pt = {0, 0};
 729                     SIZE    sz = {0, 0};
 730                     DWORD   flags = SWP_NOSIZE | SWP_NOMOVE;
 731
 732                     if (wpage->wininfo->origin.x != CW_USEDEFAULT &&
 733                         wpage->wininfo->origin.y != CW_USEDEFAULT)
 734                     {
 735                         pt = wpage->wininfo->origin;
 736                         flags &= ~SWP_NOSIZE;
 737                     }
 738                     if (wpage->wininfo->size.cx != CW_USEDEFAULT &&
 739                         wpage->wininfo->size.cy != CW_USEDEFAULT)
 740                     {
 741                         sz = wpage->wininfo->size;
 742                         flags &= ~SWP_NOMOVE;
 743                     }
 744                     SetWindowPos(win->hMainWnd, HWND_TOP, pt.x, pt.y, sz.cx, sz.cy, flags);
 745                 }
 746
 747                 if (wpage->page && win->page && wpage->page->file != win->page->file)
 748                     WINHELP_DeleteBackSet(win);
 749                 WINHELP_InitFonts(win->hMainWnd);
 750
 751                 win->page = wpage->page;
 752                 win->info = wpage->wininfo;
 753                 hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
 754                 WINHELP_SetupText(hTextWnd, win, wpage->relative);
 755
 756                 InvalidateRect(win->hMainWnd, NULL, TRUE);
 757                 if (win->hHistoryWnd) InvalidateRect(win->hHistoryWnd, NULL, TRUE);
 758
 759                 break;
 760             }
 761         }
 762     }
 763
 764     if (!win)
 765     {
 766         /* Initialize WINHELP_WINDOW struct */
 767         win = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINHELP_WINDOW));
 768         if (!win) return FALSE;
 769         win->next = Globals.win_list;
 770         Globals.win_list = win;
 771
 772         win->hHandCur = LoadCursorW(0, (LPWSTR)IDC_HAND);
 773         win->back.index = 0;
 774         win->font_scale = 1;
 775         WINHELP_GrabWindow(win);
 776     }
 777     win->page = wpage->page;
 778     win->info = wpage->wininfo;
 779     WINHELP_GrabWindow(win);
 780
 781     if (!bPopup && wpage->page && remember)
 782     {
 783         WINHELP_RememberPage(win, wpage);
 784     }
 785
 786     if (bPopup)
 787         Globals.active_popup = win;
 788     else
 789         Globals.active_win = win;
 790
 791     /* Initialize default pushbuttons */
 792     if (bPrimary && wpage->page)
 793     {
 794         CHAR    buffer[MAX_STRING_LEN];
 795
 796         LoadStringA(Globals.hInstance, STID_CONTENTS, buffer, sizeof(buffer));
 797         MACRO_CreateButton("BTN_CONTENTS", buffer, "Contents()");
 798         LoadStringA(Globals.hInstance, STID_INDEX, buffer, sizeof(buffer));
 799         MACRO_CreateButton("BTN_INDEX", buffer, "Finder()");
 800         LoadStringA(Globals.hInstance, STID_BACK, buffer, sizeof(buffer));
 801         MACRO_CreateButton("BTN_BACK", buffer, "Back()");
 802         if (win->back.index <= 1) MACRO_DisableButton("BTN_BACK");
 803     }
 804
 805     if (!bReUsed)
 806     {
 807         win->hMainWnd = CreateWindowExA((bPopup) ? WS_EX_TOOLWINDOW : 0, MAIN_WIN_CLASS_NAME,
 808                                        WINHELP_GetCaption(wpage),
 809                                        bPrimary ? WS_OVERLAPPEDWINDOW : wpage->wininfo->win_style,
 810                                        wpage->wininfo->origin.x, wpage->wininfo->origin.y,
 811                                        wpage->wininfo->size.cx, wpage->wininfo->size.cy,
 812                                        bPopup ? Globals.active_win->hMainWnd : NULL,
 813                                        bPrimary ? LoadMenuW(Globals.hInstance, MAKEINTRESOURCEW(MAIN_MENU)) : 0,
 814                                        Globals.hInstance, win);
 815         if (!bPopup)
 816             /* Create button box and text Window */
 817             CreateWindowA(BUTTON_BOX_WIN_CLASS_NAME, "", WS_CHILD | WS_VISIBLE,
 818                          0, 0, 0, 0, win->hMainWnd, (HMENU)CTL_ID_BUTTON, Globals.hInstance, NULL);
 819
 820         hTextWnd = CreateWindowA(RICHEDIT_CLASS20A, NULL,
 821                                 ES_MULTILINE | ES_READONLY | WS_CHILD | WS_HSCROLL | WS_VSCROLL | WS_VISIBLE,
 822                                 0, 0, 0, 0, win->hMainWnd, (HMENU)CTL_ID_TEXT, Globals.hInstance, NULL);
 823         SendMessageW(hTextWnd, EM_SETEVENTMASK, 0,
 824                     SendMessageW(hTextWnd, EM_GETEVENTMASK, 0, 0) | ENM_MOUSEEVENTS);
 825         win->origRicheditWndProc = (WNDPROC)SetWindowLongPtrA(hTextWnd, GWLP_WNDPROC,
 826                                                              (LONG_PTR)WINHELP_RicheditWndProc);
 827     }
 828
 829     hIcon = (wpage->page) ? wpage->page->file->hIcon : NULL;
 830     if (!hIcon) hIcon = LoadImageW(Globals.hInstance, MAKEINTRESOURCEW(IDI_WINHELP), IMAGE_ICON,
 831                                   GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_SHARED);
 832     SendMessageW(win->hMainWnd, WM_SETICON, ICON_SMALL, (DWORD_PTR)hIcon);
 833
 834     /* Initialize file specific pushbuttons */
 835     if (!(wpage->wininfo->win_style & WS_POPUP) && wpage->page)
 836     {
 837         HLPFILE_MACRO  *macro;
 838         for (macro = wpage->page->file->first_macro; macro; macro = macro->next)
 839             MACRO_ExecuteMacro(win, macro->lpszMacro);
 840
 841         for (macro = wpage->page->first_macro; macro; macro = macro->next)
 842             MACRO_ExecuteMacro(win, macro->lpszMacro);
 843     }
 844     /* See #17681, in some cases, the newly created window is closed by the macros it contains
 845      * (braindead), so deal with this case
 846      */
 847     for (win = Globals.win_list; win; win = win->next)
 848     {
 849         if (!lstrcmpiA(win->info->name, wpage->wininfo->name)) break;
 850     }
 851     if (!win || !WINHELP_ReleaseWindow(win)) return TRUE;
 852
 853     if (bPopup)
 854     {
 855         DWORD   mask = SendMessageW(hTextWnd, EM_GETEVENTMASK, 0, 0);
 856
 857         win->font_scale = Globals.active_win->font_scale;
 858         WINHELP_SetupText(hTextWnd, win, wpage->relative);
 859
 860         /* we need the window to be shown for richedit to compute the size */
 861         ShowWindow(win->hMainWnd, nCmdShow);
 862         SendMessageW(hTextWnd, EM_SETEVENTMASK, 0, mask | ENM_REQUESTRESIZE);
 863         SendMessageW(hTextWnd, EM_REQUESTRESIZE, 0, 0);
 864         SendMessageW(hTextWnd, EM_SETEVENTMASK, 0, mask);
 865     }
 866     else
 867     {
 868         WINHELP_SetupText(hTextWnd, win, wpage->relative);
 869         WINHELP_LayoutMainWindow(win);
 870         ShowWindow(win->hMainWnd, nCmdShow);
 871     }
 872
 873     return TRUE;
 874 }
 875
 876 /******************************************************************
 877  *             WINHELP_OpenHelpWindow
 878  * Main function to search for a page and display it in a window
 879  */
 880 BOOL WINHELP_OpenHelpWindow(HLPFILE_PAGE* (*lookup)(HLPFILE*, LONG, ULONG*),
 881                             HLPFILE* hlpfile, LONG val, HLPFILE_WINDOWINFO* wi,
 882                             int nCmdShow)
 883 {
 884     WINHELP_WNDPAGE     wpage;
 885
 886     wpage.page = lookup(hlpfile, val, &wpage.relative);
 887     if (wpage.page) wpage.page->file->wRefCount++;
 888     wpage.wininfo = wi;
 889     return WINHELP_CreateHelpWindow(&wpage, nCmdShow, TRUE);
 890 }
 891
 892 /******************************************************************
 893  *             WINHELP_HandleTextMouse
 894  *
 895  */
 896 static BOOL WINHELP_HandleTextMouse(WINHELP_WINDOW* win, UINT msg, LPARAM lParam)
 897 {
 898     HLPFILE*                hlpfile;
 899     HLPFILE_LINK*           link;
 900     BOOL                    ret = FALSE;
 901
 902     switch (msg)
 903     {
 904     case WM_LBUTTONDOWN:
 905         if ((link = WINHELP_FindLink(win, lParam)))
 906         {
 907             HLPFILE_WINDOWINFO*     wi;
 908
 909             switch (link->cookie)
 910             {
 911             case hlp_link_link:
 912                 if ((hlpfile = WINHELP_LookupHelpFile(link->string)))
 913                 {
 914                     if (link->window == -1)
 915                     {
 916                         wi = win->info;
 917                         if (wi->win_style & WS_POPUP) wi = Globals.active_win->info;
 918                     }
 919                     else if (link->window < hlpfile->numWindows)
 920                         wi = &hlpfile->windows[link->window];
 921                     else
 922                     {
 923                         WINE_WARN("link to window %d/%d\n", link->window, hlpfile->numWindows);
 924                         break;
 925                     }
 926                     WINHELP_OpenHelpWindow(HLPFILE_PageByHash, hlpfile, link->hash, wi, SW_NORMAL);
 927                 }
 928                 break;
 929             case hlp_link_popup:
 930                 if ((hlpfile = WINHELP_LookupHelpFile(link->string)))
 931                     WINHELP_OpenHelpWindow(HLPFILE_PageByHash, hlpfile, link->hash,
 932                                            WINHELP_GetPopupWindowInfo(hlpfile, win, lParam),
 933                                            SW_NORMAL);
 934                 break;
 935             case hlp_link_macro:
 936                 MACRO_ExecuteMacro(win, link->string);
 937                 break;
 938             default:
 939                 WINE_FIXME("Unknown link cookie %d\n", link->cookie);
 940             }
 941             ret = TRUE;
 942         }
 943         break;
 944     }
 945     return ret;
 946 }
 947
 948 /***********************************************************************
 949  *
 950  *           WINHELP_CheckPopup
 951  */
 952 static BOOL WINHELP_CheckPopup(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, LRESULT* lret)
 953 {
 954     WINHELP_WINDOW*     popup;
 955
 956     if (!Globals.active_popup) return FALSE;
 957
 958     switch (msg)
 959     {
 960     case WM_NOTIFY:
 961         {
 962             MSGFILTER*  msgf = (MSGFILTER*)lParam;
 963             if (msgf->nmhdr.code == EN_MSGFILTER)
 964             {
 965                 if (!WINHELP_CheckPopup(hWnd, msgf->msg, msgf->wParam, msgf->lParam, NULL))
 966                     return FALSE;
 967                 if (lret) *lret = 1;
 968                 return TRUE;
 969             }
 970         }
 971         break;
 972     case WM_ACTIVATE:
 973         if (LOWORD(wParam) != WA_INACTIVE || (HWND)lParam == Globals.active_win->hMainWnd ||
 974             (HWND)lParam == Globals.active_popup->hMainWnd ||
 975             GetWindow((HWND)lParam, GW_OWNER) == Globals.active_win->hMainWnd)
 976             break;
 977         /* fall through */
 978     case WM_LBUTTONDOWN:
 979         if (msg == WM_LBUTTONDOWN)
 980             WINHELP_HandleTextMouse(Globals.active_popup, msg, lParam);
 981         /* fall through */
 982     case WM_MBUTTONDOWN:
 983     case WM_RBUTTONDOWN:
 984     case WM_NCLBUTTONDOWN:
 985     case WM_NCMBUTTONDOWN:
 986     case WM_NCRBUTTONDOWN:
 987         popup = Globals.active_popup;
 988         Globals.active_popup = NULL;
 989         WINHELP_ReleaseWindow(popup);
 990         return TRUE;
 991     }
 992     return FALSE;
 993 }
 994
 995 /***********************************************************************
 996  *
 997  *           WINHELP_ButtonWndProc
 998  */
 999 static LRESULT CALLBACK WINHELP_ButtonWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1000 {
1001     if (WINHELP_CheckPopup(hWnd, msg, wParam, lParam, NULL)) return 0;
1002
1003     if (msg == WM_KEYDOWN)
1004     {
1005         switch (wParam)
1006         {
1007         case VK_UP:
1008         case VK_DOWN:
1009         case VK_PRIOR:
1010         case VK_NEXT:
1011         case VK_ESCAPE:
1012             return SendMessageA(GetParent(hWnd), msg, wParam, lParam);
1013         }
1014     }
1015
1016     return CallWindowProcA(Globals.button_proc, hWnd, msg, wParam, lParam);
1017 }
1018
1019 /***********************************************************************
1020  *
1021  *           WINHELP_ButtonBoxWndProc
1022  */
1023 static LRESULT CALLBACK WINHELP_ButtonBoxWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1024 {
1025     WINDOWPOS      *winpos;
1026     WINHELP_WINDOW *win;
1027     WINHELP_BUTTON *button;
1028     SIZE button_size;
1029     INT  x, y;
1030
1031     if (WINHELP_CheckPopup(hWnd, msg, wParam, lParam, NULL)) return 0L;
1032
1033     switch (msg)
1034     {
1035     case WM_WINDOWPOSCHANGING:
1036         winpos = (WINDOWPOS*) lParam;
1037         win = (WINHELP_WINDOW*) GetWindowLongPtrW(GetParent(hWnd), 0);
1038
1039         /* Update buttons */
1040         button_size.cx = 0;
1041         button_size.cy = 0;
1042         for (button = win->first_button; button; button = button->next)
1043         {
1044             HDC  hDc;
1045             SIZE textsize;
1046             if (!button->hWnd)
1047             {
1048                 button->hWnd = CreateWindowA(STRING_BUTTON, button->lpszName,
1049                                             WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
1050                                             0, 0, 0, 0,
1051                                             hWnd, (HMENU) button->wParam,
1052                                             Globals.hInstance, 0);
1053                 if (button->hWnd)
1054                 {
1055                     if (Globals.button_proc == NULL)
1056                     {
1057                         NONCLIENTMETRICSW ncm;
1058                         Globals.button_proc = (WNDPROC) GetWindowLongPtrA(button->hWnd, GWLP_WNDPROC);
1059
1060                         ncm.cbSize = sizeof(NONCLIENTMETRICSW);
1061                         SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
1062                                               sizeof(NONCLIENTMETRICSW), &ncm, 0);
1063                         Globals.hButtonFont = CreateFontIndirectW(&ncm.lfMenuFont);
1064                     }
1065                     SetWindowLongPtrA(button->hWnd, GWLP_WNDPROC, (LONG_PTR) WINHELP_ButtonWndProc);
1066                     if (Globals.hButtonFont)
1067                         SendMessageW(button->hWnd, WM_SETFONT, (WPARAM)Globals.hButtonFont, TRUE);
1068                 }
1069             }
1070             hDc = GetDC(button->hWnd);
1071             GetTextExtentPointA(hDc, button->lpszName, strlen(button->lpszName), &textsize);
1072             ReleaseDC(button->hWnd, hDc);
1073
1074             button_size.cx = max(button_size.cx, textsize.cx + BUTTON_CX);
1075             button_size.cy = max(button_size.cy, textsize.cy + BUTTON_CY);
1076         }
1077
1078         x = 0;
1079         y = 0;
1080         for (button = win->first_button; button; button = button->next)
1081         {
1082             SetWindowPos(button->hWnd, HWND_TOP, x, y, button_size.cx, button_size.cy, 0);
1083
1084             if (x + 2 * button_size.cx <= winpos->cx)
1085                 x += button_size.cx;
1086             else
1087                 x = 0, y += button_size.cy;
1088         }
1089         winpos->cy = y + (x ? button_size.cy : 0);
1090         break;
1091
1092     case WM_COMMAND:
1093         SendMessageW(GetParent(hWnd), msg, wParam, lParam);
1094         break;
1095
1096     case WM_KEYDOWN:
1097         switch (wParam)
1098         {
1099         case VK_UP:
1100         case VK_DOWN:
1101         case VK_PRIOR:
1102         case VK_NEXT:
1103         case VK_ESCAPE:
1104             return SendMessageA(GetParent(hWnd), msg, wParam, lParam);
1105         }
1106         break;
1107     }
1108
1109     return DefWindowProcA(hWnd, msg, wParam, lParam);
1110 }
1111
1112 /******************************************************************
1113  *              WINHELP_HistoryWndProc
1114  *
1115  *
1116  */
1117 static LRESULT CALLBACK WINHELP_HistoryWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1118 {
1119     WINHELP_WINDOW*     win;
1120     PAINTSTRUCT         ps;
1121     HDC                 hDc;
1122     TEXTMETRICW         tm;
1123     unsigned int        i;
1124     RECT                r;
1125
1126     switch (msg)
1127     {
1128     case WM_NCCREATE:
1129         win = (WINHELP_WINDOW*)((LPCREATESTRUCTA)lParam)->lpCreateParams;
1130         SetWindowLongPtrW(hWnd, 0, (ULONG_PTR)win);
1131         win->hHistoryWnd = hWnd;
1132         break;
1133     case WM_CREATE:
1134         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1135         hDc = GetDC(hWnd);
1136         GetTextMetricsW(hDc, &tm);
1137         GetWindowRect(hWnd, &r);
1138
1139         r.right = r.left + 30 * tm.tmAveCharWidth;
1140         r.bottom = r.top + (sizeof(Globals.history.set) / sizeof(Globals.history.set[0])) * tm.tmHeight;
1141         AdjustWindowRect(&r, GetWindowLongW(hWnd, GWL_STYLE), FALSE);
1142         if (r.left < 0) {r.right -= r.left; r.left = 0;}
1143         if (r.top < 0) {r.bottom -= r.top; r.top = 0;}
1144
1145         MoveWindow(hWnd, r.left, r.top, r.right, r.bottom, TRUE);
1146         ReleaseDC(hWnd, hDc);
1147         break;
1148     case WM_LBUTTONDOWN:
1149         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1150         hDc = GetDC(hWnd);
1151         GetTextMetricsW(hDc, &tm);
1152         i = HIWORD(lParam) / tm.tmHeight;
1153         if (i < Globals.history.index)
1154             WINHELP_CreateHelpWindow(&Globals.history.set[i], SW_SHOW, TRUE);
1155         ReleaseDC(hWnd, hDc);
1156         break;
1157     case WM_PAINT:
1158         hDc = BeginPaint(hWnd, &ps);
1159         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1160         GetTextMetricsW(hDc, &tm);
1161
1162         for (i = 0; i < Globals.history.index; i++)
1163         {
1164             if (Globals.history.set[i].page->file == Globals.active_win->page->file)
1165             {
1166                 TextOutA(hDc, 0, i * tm.tmHeight,
1167                         Globals.history.set[i].page->lpszTitle,
1168                         strlen(Globals.history.set[i].page->lpszTitle));
1169             }
1170             else
1171             {
1172                 char        buffer[1024];
1173                 const char* ptr1;
1174                 const char* ptr2;
1175                 unsigned    len;
1176
1177                 ptr1 = strrchr(Globals.history.set[i].page->file->lpszPath, '\\');
1178                 if (!ptr1) ptr1 = Globals.history.set[i].page->file->lpszPath;
1179                 else ptr1++;
1180                 ptr2 = strrchr(ptr1, '.');
1181                 len = ptr2 ? ptr2 - ptr1 : strlen(ptr1);
1182                 if (len > sizeof(buffer)) len = sizeof(buffer);
1183                 memcpy(buffer, ptr1, len);
1184                 if (len < sizeof(buffer)) buffer[len++] = ':';
1185                 lstrcpynA(&buffer[len], Globals.history.set[i].page->lpszTitle, sizeof(buffer) - len);
1186                 TextOutA(hDc, 0, i * tm.tmHeight, buffer, strlen(buffer));
1187             }
1188         }
1189         EndPaint(hWnd, &ps);
1190         break;
1191     case WM_DESTROY:
1192         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1193         if (hWnd == win->hHistoryWnd)
1194             win->hHistoryWnd = 0;
1195         break;
1196     }
1197     return DefWindowProcA(hWnd, msg, wParam, lParam);
1198 }
1199
1200 /**************************************************************************
1201  * cb_KWBTree
1202  *
1203  * HLPFILE_BPTreeCallback enumeration function for '|KWBTREE' internal file.
1204  *
1205  */
1206 static void cb_KWBTree(void *p, void **next, void *cookie)
1207 {
1208     HWND hListWnd = cookie;
1209     int count;
1210
1211     WINE_TRACE("Adding '%s' to search list\n", (char *)p);
1212     SendMessageA(hListWnd, LB_INSERTSTRING, -1, (LPARAM)p);
1213     count = SendMessageW(hListWnd, LB_GETCOUNT, 0, 0);
1214     SendMessageW(hListWnd, LB_SETITEMDATA, count-1, (LPARAM)p);
1215     *next = (char*)p + strlen((char*)p) + 7;
1216 }
1217
1218 struct index_data
1219 {
1220     HLPFILE*    hlpfile;
1221     BOOL        jump;
1222     ULONG       offset;
1223 };
1224
1225 /**************************************************************************
1226  * WINHELP_IndexDlgProc
1227  *
1228  */
1229 static INT_PTR CALLBACK WINHELP_IndexDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1230 {
1231     static struct index_data* id;
1232     int sel;
1233
1234     switch (msg)
1235     {
1236     case WM_INITDIALOG:
1237         id = (struct index_data*)((PROPSHEETPAGEA*)lParam)->lParam;
1238         HLPFILE_BPTreeEnum(id->hlpfile->kwbtree, cb_KWBTree,
1239                            GetDlgItem(hWnd, IDC_INDEXLIST));
1240         id->jump = FALSE;
1241         id->offset = 1;
1242         return TRUE;
1243     case WM_COMMAND:
1244         switch (HIWORD(wParam))
1245         {
1246         case LBN_DBLCLK:
1247             if (LOWORD(wParam) == IDC_INDEXLIST)
1248                 SendMessageW(GetParent(hWnd), PSM_PRESSBUTTON, PSBTN_OK, 0);
1249             break;
1250         }
1251         break;
1252     case WM_NOTIFY:
1253         switch (((NMHDR*)lParam)->code)
1254         {
1255         case PSN_APPLY:
1256             sel = SendDlgItemMessageW(hWnd, IDC_INDEXLIST, LB_GETCURSEL, 0, 0);
1257             if (sel != LB_ERR)
1258             {
1259                 BYTE *p;
1260                 int count;
1261
1262                 p = (BYTE*)SendDlgItemMessageW(hWnd, IDC_INDEXLIST, LB_GETITEMDATA, sel, 0);
1263                 count = *(short*)((char *)p + strlen((char *)p) + 1);
1264                 if (count > 1)
1265                 {
1266                     MessageBoxA(hWnd, "count > 1 not supported yet", "Error", MB_OK | MB_ICONSTOP);
1267                     SetWindowLongPtrW(hWnd, DWLP_MSGRESULT, PSNRET_INVALID);
1268                     return TRUE;
1269                 }
1270                 id->offset = *(ULONG*)((char *)p + strlen((char *)p) + 3);
1271                 id->offset = *(long*)(id->hlpfile->kwdata + id->offset + 9);
1272                 if (id->offset == 0xFFFFFFFF)
1273                 {
1274                     MessageBoxA(hWnd, "macro keywords not supported yet", "Error", MB_OK | MB_ICONSTOP);
1275                     SetWindowLongPtrW(hWnd, DWLP_MSGRESULT, PSNRET_INVALID);
1276                     return TRUE;
1277                 }
1278                 id->jump = TRUE;
1279                 SetWindowLongPtrW(hWnd, DWLP_MSGRESULT, PSNRET_NOERROR);
1280             }
1281             return TRUE;
1282         default:
1283             return FALSE;
1284         }
1285         break;
1286     default:
1287         break;
1288     }
1289     return FALSE;
1290 }
1291
1292 /**************************************************************************
1293  * WINHELP_SearchDlgProc
1294  *
1295  */
1296 static INT_PTR CALLBACK WINHELP_SearchDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1297 {
1298     switch (msg)
1299     {
1300     case WM_INITDIALOG:
1301         return TRUE;
1302     case WM_NOTIFY:
1303         switch (((NMHDR*)lParam)->code)
1304         {
1305         case PSN_APPLY:
1306             SetWindowLongPtrW(hWnd, DWLP_MSGRESULT, PSNRET_NOERROR);
1307             return TRUE;
1308         default:
1309             return FALSE;
1310         }
1311         break;
1312     default:
1313         break;
1314     }
1315     return FALSE;
1316 }
1317
1318 /***********************************************************************
1319  *
1320  *           WINHELP_MainWndProc
1321  */
1322 static LRESULT CALLBACK WINHELP_MainWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1323 {
1324     WINHELP_WINDOW *win;
1325     WINHELP_BUTTON *button;
1326     HWND hTextWnd;
1327     LRESULT ret;
1328
1329     if (WINHELP_CheckPopup(hWnd, msg, wParam, lParam, &ret)) return ret;
1330
1331     switch (msg)
1332     {
1333     case WM_NCCREATE:
1334         win = (WINHELP_WINDOW*) ((LPCREATESTRUCTA) lParam)->lpCreateParams;
1335         SetWindowLongPtrW(hWnd, 0, (ULONG_PTR) win);
1336         if (!win->page && Globals.isBook)
1337             PostMessageW(hWnd, WM_COMMAND, MNID_FILE_OPEN, 0);
1338         win->hMainWnd = hWnd;
1339         break;
1340
1341     case WM_WINDOWPOSCHANGED:
1342         WINHELP_LayoutMainWindow((WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0));
1343         break;
1344
1345     case WM_COMMAND:
1346         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1347         switch (LOWORD(wParam))
1348         {
1349             /* Menu FILE */
1350         case MNID_FILE_OPEN:    MACRO_FileOpen();       break;
1351         case MNID_FILE_PRINT:   MACRO_Print();          break;
1352         case MNID_FILE_SETUP:   MACRO_PrinterSetup();   break;
1353         case MNID_FILE_EXIT:    MACRO_Exit();           break;
1354
1355             /* Menu EDIT */
1356         case MNID_EDIT_COPYDLG:
1357             SendDlgItemMessageW(hWnd, CTL_ID_TEXT, WM_COPY, 0, 0);
1358             break;
1359         case MNID_EDIT_ANNOTATE:MACRO_Annotate();       break;
1360
1361             /* Menu Bookmark */
1362         case MNID_BKMK_DEFINE:  MACRO_BookmarkDefine(); break;
1363
1364             /* Menu Help */
1365         case MNID_HELP_HELPON:  MACRO_HelpOn();         break;
1366         case MNID_HELP_HELPTOP: MACRO_HelpOnTop();      break;
1367         case MNID_HELP_ABOUT:   MACRO_About();          break;
1368
1369             /* Context help */
1370         case MNID_CTXT_ANNOTATE:MACRO_Annotate();       break;
1371         case MNID_CTXT_COPY:    MACRO_CopyDialog();     break;
1372         case MNID_CTXT_PRINT:   MACRO_Print();          break;
1373         case MNID_OPTS_HISTORY: MACRO_History();        break;
1374         case MNID_OPTS_FONTS_SMALL:
1375         case MNID_CTXT_FONTS_SMALL:
1376             win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1377             if (win->font_scale != 0)
1378             {
1379                 win->font_scale = 0;
1380                 WINHELP_SetupText(GetDlgItem(hWnd, CTL_ID_TEXT), win, 0 /* FIXME */);
1381             }
1382             break;
1383         case MNID_OPTS_FONTS_NORMAL:
1384         case MNID_CTXT_FONTS_NORMAL:
1385             win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1386             if (win->font_scale != 1)
1387             {
1388                 win->font_scale = 1;
1389                 WINHELP_SetupText(GetDlgItem(hWnd, CTL_ID_TEXT), win, 0 /* FIXME */);
1390             }
1391             break;
1392         case MNID_OPTS_FONTS_LARGE:
1393         case MNID_CTXT_FONTS_LARGE:
1394             win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1395             if (win->font_scale != 2)
1396             {
1397                 win->font_scale = 2;
1398                 WINHELP_SetupText(GetDlgItem(hWnd, CTL_ID_TEXT), win, 0 /* FIXME */);
1399             }
1400             break;
1401
1402         default:
1403             /* Buttons */
1404             for (button = win->first_button; button; button = button->next)
1405                 if (wParam == button->wParam) break;
1406             if (button)
1407                 MACRO_ExecuteMacro(win, button->lpszMacro);
1408             else if (!HIWORD(wParam))
1409                 MessageBoxW(0, MAKEINTRESOURCEW(STID_NOT_IMPLEMENTED),
1410                             MAKEINTRESOURCEW(STID_WHERROR), MB_OK);
1411             break;
1412         }
1413         break;
1414 /* EPP     case WM_DESTROY: */
1415 /* EPP         if (Globals.hPopupWnd) DestroyWindow(Globals.hPopupWnd); */
1416 /* EPP         break; */
1417     case WM_COPYDATA:
1418         return WINHELP_HandleCommand((HWND)wParam, lParam);
1419
1420     case WM_CHAR:
1421         if (wParam == 3)
1422         {
1423             SendDlgItemMessageW(hWnd, CTL_ID_TEXT, WM_COPY, 0, 0);
1424             return 0;
1425         }
1426         break;
1427
1428     case WM_KEYDOWN:
1429         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1430         hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
1431
1432         switch (wParam)
1433         {
1434         case VK_UP:
1435             SendMessageW(hTextWnd, EM_SCROLL, SB_LINEUP, 0);
1436             return 0;
1437         case VK_DOWN:
1438             SendMessageW(hTextWnd, EM_SCROLL, SB_LINEDOWN, 0);
1439             return 0;
1440         case VK_PRIOR:
1441             SendMessageW(hTextWnd, EM_SCROLL, SB_PAGEUP, 0);
1442             return 0;
1443         case VK_NEXT:
1444             SendMessageW(hTextWnd, EM_SCROLL, SB_PAGEDOWN, 0);
1445             return 0;
1446         case VK_ESCAPE:
1447             MACRO_Exit();
1448             return 0;
1449         }
1450         break;
1451
1452     case WM_NOTIFY:
1453         if (wParam == CTL_ID_TEXT)
1454         {
1455             RECT        rc;
1456
1457             switch (((NMHDR*)lParam)->code)
1458             {
1459             case EN_MSGFILTER:
1460                 {
1461                     const MSGFILTER*    msgf = (const MSGFILTER*)lParam;
1462                     switch (msgf->msg)
1463                     {
1464                     case WM_KEYUP:
1465                         if (msgf->wParam == VK_ESCAPE)
1466                             WINHELP_ReleaseWindow((WINHELP_WINDOW*)GetWindowLongPtrW(hWnd, 0));
1467                         break;
1468                     case WM_RBUTTONDOWN:
1469                     {
1470                         HMENU       hMenu;
1471                         POINT       pt;
1472
1473                         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1474                         hMenu = LoadMenuW(Globals.hInstance, MAKEINTRESOURCEW(CONTEXT_MENU));
1475                         switch (win->font_scale)
1476                         {
1477                         case 0:
1478                             CheckMenuItem(hMenu, MNID_CTXT_FONTS_SMALL,
1479                                           MF_BYCOMMAND|MF_CHECKED);
1480                             break;
1481                         default:
1482                             WINE_FIXME("Unsupported %d\n", win->font_scale);
1483                             /* fall through */
1484                         case 1:
1485                             CheckMenuItem(hMenu, MNID_CTXT_FONTS_NORMAL,
1486                                           MF_BYCOMMAND|MF_CHECKED);
1487                             break;
1488                         case 2:
1489                             CheckMenuItem(hMenu, MNID_CTXT_FONTS_LARGE,
1490                                           MF_BYCOMMAND|MF_CHECKED);
1491                             break;
1492                         }
1493                         pt.x = (int)(short)LOWORD(msgf->lParam);
1494                         pt.y = (int)(short)HIWORD(msgf->lParam);
1495                         ClientToScreen(msgf->nmhdr.hwndFrom, &pt);
1496                         TrackPopupMenu(GetSubMenu(hMenu, 0), TPM_LEFTALIGN|TPM_TOPALIGN,
1497                                        pt.x, pt.y, 0, hWnd, NULL);
1498                         DestroyMenu(hMenu);
1499                     }
1500                     break;
1501                     default:
1502                         return WINHELP_HandleTextMouse((WINHELP_WINDOW*)GetWindowLongPtrW(hWnd, 0),
1503                                                        msgf->msg, msgf->lParam);
1504                     }
1505                 }
1506                 break;
1507
1508             case EN_REQUESTRESIZE:
1509                 rc = ((REQRESIZE*)lParam)->rc;
1510                 win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1511                 AdjustWindowRect(&rc, GetWindowLongW(win->hMainWnd, GWL_STYLE),
1512                                  FALSE);
1513                 SetWindowPos(win->hMainWnd, HWND_TOP, 0, 0,
1514                              rc.right - rc.left, rc.bottom - rc.top,
1515                              SWP_NOMOVE | SWP_NOZORDER);
1516                 WINHELP_LayoutMainWindow(win);
1517                 break;
1518             }
1519         }
1520         break;
1521
1522     case WM_INITMENUPOPUP:
1523         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1524         CheckMenuItem((HMENU)wParam, MNID_OPTS_FONTS_SMALL,
1525                       MF_BYCOMMAND | (win->font_scale == 0) ? MF_CHECKED : 0);
1526         CheckMenuItem((HMENU)wParam, MNID_OPTS_FONTS_NORMAL,
1527                       MF_BYCOMMAND | (win->font_scale == 1) ? MF_CHECKED : 0);
1528         CheckMenuItem((HMENU)wParam, MNID_OPTS_FONTS_LARGE,
1529                       MF_BYCOMMAND | (win->font_scale == 2) ? MF_CHECKED : 0);
1530         break;
1531     case WM_DESTROY:
1532         win = (WINHELP_WINDOW*) GetWindowLongPtrW(hWnd, 0);
1533         WINHELP_DeleteWindow(win);
1534         break;
1535     }
1536     return DefWindowProcA(hWnd, msg, wParam, lParam);
1537 }
1538
1539 /**************************************************************************
1540  * WINHELP_CreateIndexWindow
1541  *
1542  * Displays a dialog with keywords of current help file.
1543  *
1544  */
1545 BOOL WINHELP_CreateIndexWindow(BOOL is_search)
1546 {
1547     HPROPSHEETPAGE      psPage[3];
1548     PROPSHEETPAGEA      psp;
1549     PROPSHEETHEADERA    psHead;
1550     struct index_data   id;
1551     char                buf[256];
1552
1553     if (Globals.active_win && Globals.active_win->page && Globals.active_win->page->file)
1554         id.hlpfile = Globals.active_win->page->file;
1555     else
1556         return FALSE;
1557
1558     if (id.hlpfile->kwbtree == NULL)
1559     {
1560         WINE_TRACE("No index provided\n");
1561         return FALSE;
1562     }
1563
1564     InitCommonControls();
1565
1566     id.jump = FALSE;
1567     memset(&psp, 0, sizeof(psp));
1568     psp.dwSize = sizeof(psp);
1569     psp.dwFlags = 0;
1570     psp.hInstance = Globals.hInstance;
1571
1572     psp.u.pszTemplate = MAKEINTRESOURCEA(IDD_INDEX);
1573     psp.lParam = (LPARAM)&id;
1574     psp.pfnDlgProc = WINHELP_IndexDlgProc;
1575     psPage[0] = CreatePropertySheetPageA(&psp);
1576
1577     psp.u.pszTemplate = MAKEINTRESOURCEA(IDD_SEARCH);
1578     psp.lParam = (LPARAM)&id;
1579     psp.pfnDlgProc = WINHELP_SearchDlgProc;
1580     psPage[1] = CreatePropertySheetPageA(&psp);
1581
1582     memset(&psHead, 0, sizeof(psHead));
1583     psHead.dwSize = sizeof(psHead);
1584
1585     LoadStringA(Globals.hInstance, STID_PSH_INDEX, buf, sizeof(buf));
1586     strcat(buf, Globals.active_win->info->caption);
1587
1588     psHead.pszCaption = buf;
1589     psHead.nPages = 2;
1590     psHead.u2.nStartPage = is_search ? 1 : 0;
1591     psHead.hwndParent = Globals.active_win->hMainWnd;
1592     psHead.u3.phpage = psPage;
1593     psHead.dwFlags = PSH_NOAPPLYNOW;
1594
1595     PropertySheetA(&psHead);
1596     if (id.jump)
1597     {
1598         WINE_TRACE("got %d as an offset\n", id.offset);
1599         WINHELP_OpenHelpWindow(HLPFILE_PageByOffset, id.hlpfile, id.offset,
1600                                Globals.active_win->info, SW_NORMAL);
1601     }
1602     return TRUE;
1603 }
1604
1605 /***********************************************************************
1606  *
1607  *           RegisterWinClasses
1608  */
1609 static BOOL WINHELP_RegisterWinClasses(void)
1610 {
1611     WNDCLASSEXA class_main, class_button_box, class_history;
1612
1613     class_main.cbSize              = sizeof(class_main);
1614     class_main.style               = CS_HREDRAW | CS_VREDRAW;
1615     class_main.lpfnWndProc         = WINHELP_MainWndProc;
1616     class_main.cbClsExtra          = 0;
1617     class_main.cbWndExtra          = sizeof(WINHELP_WINDOW *);
1618     class_main.hInstance           = Globals.hInstance;
1619     class_main.hIcon               = LoadIconW(Globals.hInstance, MAKEINTRESOURCEW(IDI_WINHELP));
1620     class_main.hCursor             = LoadCursorW(0, (LPWSTR)IDC_ARROW);
1621     class_main.hbrBackground       = (HBRUSH)(COLOR_WINDOW+1);
1622     class_main.lpszMenuName        = 0;
1623     class_main.lpszClassName       = MAIN_WIN_CLASS_NAME;
1624     class_main.hIconSm             = LoadImageW(Globals.hInstance, MAKEINTRESOURCEW(IDI_WINHELP), IMAGE_ICON,
1625                                                GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
1626                                                LR_SHARED);
1627
1628     class_button_box               = class_main;
1629     class_button_box.lpfnWndProc   = WINHELP_ButtonBoxWndProc;
1630     class_button_box.cbWndExtra    = 0;
1631     class_button_box.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
1632     class_button_box.lpszClassName = BUTTON_BOX_WIN_CLASS_NAME;
1633
1634     class_history                  = class_main;
1635     class_history.lpfnWndProc      = WINHELP_HistoryWndProc;
1636     class_history.lpszClassName    = HISTORY_WIN_CLASS_NAME;
1637
1638     return (RegisterClassExA(&class_main) &&
1639             RegisterClassExA(&class_button_box) &&
1640             RegisterClassExA(&class_history));
1641 }
1642
1643 /***********************************************************************
1644  *
1645  *           WinMain
1646  */
1647 int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE prev, LPSTR cmdline, int show)
1648 {
1649     MSG                 msg;
1650     LONG                lHash = 0;
1651     HLPFILE*            hlpfile;
1652     static CHAR         default_wndname[] = "main";
1653     LPSTR               wndname = default_wndname;
1654     WINHELP_DLL*        dll;
1655     HACCEL              hAccel;
1656
1657     Globals.hInstance = hInstance;
1658
1659     if (LoadLibraryA("riched20.dll") == NULL)
1660         return MessageBoxW(0, MAKEINTRESOURCEW(STID_NO_RICHEDIT),
1661                            MAKEINTRESOURCEW(STID_WHERROR), MB_OK);
1662
1663     /* Get options */
1664     while (*cmdline && (*cmdline == ' ' || *cmdline == '-'))
1665     {
1666         CHAR   option;
1667         LPCSTR topic_id;
1668         if (*cmdline++ == ' ') continue;
1669
1670         option = *cmdline;
1671         if (option) cmdline++;
1672         while (*cmdline && *cmdline == ' ') cmdline++;
1673         switch (option)
1674         {
1675         case 'i':
1676         case 'I':
1677             topic_id = cmdline;
1678             while (*cmdline && *cmdline != ' ') cmdline++;
1679             if (*cmdline) *cmdline++ = '\0';
1680             lHash = HLPFILE_Hash(topic_id);
1681             break;
1682
1683         case '3':
1684         case '4':
1685             Globals.wVersion = option - '0';
1686             break;
1687
1688         case 'x':
1689             show = SW_HIDE;
1690             Globals.isBook = FALSE;
1691             break;
1692
1693         default:
1694             WINE_FIXME("Unsupported cmd line: %s\n", cmdline);
1695             break;
1696         }
1697     }
1698
1699     /* Create primary window */
1700     if (!WINHELP_RegisterWinClasses())
1701     {
1702         WINE_FIXME("Couldn't register classes\n");
1703         return 0;
1704     }
1705
1706     if (*cmdline)
1707     {
1708         char*   ptr;
1709         if ((*cmdline == '"') && (ptr = strchr(cmdline+1, '"')))
1710         {
1711             cmdline++;
1712             *ptr = '\0';
1713         }
1714         if ((ptr = strchr(cmdline, '>')))
1715         {
1716             *ptr = '\0';
1717             wndname = ptr + 1;
1718         }
1719         hlpfile = WINHELP_LookupHelpFile(cmdline);
1720         if (!hlpfile) return 0;
1721     }
1722     else hlpfile = NULL;
1723     WINHELP_OpenHelpWindow(HLPFILE_PageByHash, hlpfile, lHash,
1724                            WINHELP_GetWindowInfo(hlpfile, wndname), show);
1725
1726     /* Message loop */
1727     hAccel = LoadAcceleratorsW(hInstance, MAKEINTRESOURCEW(MAIN_ACCEL));
1728     while ((Globals.win_list || Globals.active_popup) && GetMessageW(&msg, 0, 0, 0))
1729     {
1730         HWND hWnd = Globals.active_win ? Globals.active_win->hMainWnd : NULL;
1731         if (!TranslateAcceleratorW(hWnd, hAccel, &msg))
1732         {
1733             TranslateMessage(&msg);
1734             DispatchMessageW(&msg);
1735         }
1736     }
1737     for (dll = Globals.dlls; dll; dll = dll->next)
1738     {
1739         if (dll->class & DC_INITTERM) dll->handler(DW_TERM, 0, 0);
1740     }
1741     return 0;
1742 }