git.oblomov.eu Git - wine/blob - windows/winpos.c

   1 /*
   2  * Window position related functions.
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1995, 1996, 1999 Alex Korobka
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include "winerror.h"
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "winerror.h"
  32 #include "ntstatus.h"
  33 #include "wine/winuser16.h"
  34 #include "wine/server.h"
  35 #include "controls.h"
  36 #include "user.h"
  37 #include "win.h"
  38 #include "message.h"
  39 #include "winpos.h"
  40 #include "nonclient.h"
  41 #include "wine/debug.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(win);
  44
  45 #define HAS_DLGFRAME(style,exStyle) \
  46     (((exStyle) & WS_EX_DLGMODALFRAME) || \
  47      (((style) & WS_DLGFRAME) && !((style) & WS_BORDER)))
  48
  49 #define HAS_THICKFRAME(style) \
  50     (((style) & WS_THICKFRAME) && \
  51      !(((style) & (WS_DLGFRAME|WS_BORDER)) == WS_DLGFRAME))
  52
  53 #define EMPTYPOINT(pt)          ((*(LONG*)&(pt)) == -1)
  54
  55 #define PLACE_MIN               0x0001
  56 #define PLACE_MAX               0x0002
  57 #define PLACE_RECT              0x0004
  58
  59
  60 #define DWP_MAGIC  ((INT)('W' | ('P' << 8) | ('O' << 16) | ('S' << 24)))
  61
  62 typedef struct
  63 {
  64     INT       actualCount;
  65     INT       suggestedCount;
  66     BOOL      valid;
  67     INT       wMagic;
  68     HWND      hwndParent;
  69     WINDOWPOS winPos[1];
  70 } DWP;
  71
  72 /* ----- internal variables ----- */
  73
  74 static LPCSTR atomInternalPos;
  75
  76
  77 /***********************************************************************
  78  *           WINPOS_CreateInternalPosAtom
  79  */
  80 BOOL WINPOS_CreateInternalPosAtom()
  81 {
  82     LPCSTR str = "SysIP";
  83     atomInternalPos = (LPCSTR)(DWORD)GlobalAddAtomA(str);
  84     return (atomInternalPos) ? TRUE : FALSE;
  85 }
  86
  87 /***********************************************************************
  88  *           WINPOS_CheckInternalPos
  89  *
  90  * Called when a window is destroyed.
  91  */
  92 void WINPOS_CheckInternalPos( HWND hwnd )
  93 {
  94     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( hwnd, atomInternalPos );
  95
  96     if( lpPos )
  97     {
  98         if( IsWindow(lpPos->hwndIconTitle) )
  99             DestroyWindow( lpPos->hwndIconTitle );
 100         HeapFree( GetProcessHeap(), 0, lpPos );
 101     }
 102 }
 103
 104 /***********************************************************************
 105  *              ArrangeIconicWindows (USER32.@)
 106  */
 107 UINT WINAPI ArrangeIconicWindows( HWND parent )
 108 {
 109     RECT rectParent;
 110     HWND hwndChild;
 111     INT x, y, xspacing, yspacing;
 112
 113     GetClientRect( parent, &rectParent );
 114     x = rectParent.left;
 115     y = rectParent.bottom;
 116     xspacing = GetSystemMetrics(SM_CXICONSPACING);
 117     yspacing = GetSystemMetrics(SM_CYICONSPACING);
 118
 119     hwndChild = GetWindow( parent, GW_CHILD );
 120     while (hwndChild)
 121     {
 122         if( IsIconic( hwndChild ) )
 123         {
 124             WINPOS_ShowIconTitle( hwndChild, FALSE );
 125
 126             SetWindowPos( hwndChild, 0, x + (xspacing - GetSystemMetrics(SM_CXICON)) / 2,
 127                             y - yspacing - GetSystemMetrics(SM_CYICON)/2, 0, 0,
 128                             SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 129             if( IsWindow(hwndChild) )
 130                 WINPOS_ShowIconTitle(hwndChild , TRUE );
 131
 132             if (x <= rectParent.right - xspacing) x += xspacing;
 133             else
 134             {
 135                 x = rectParent.left;
 136                 y -= yspacing;
 137             }
 138         }
 139         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 140     }
 141     return yspacing;
 142 }
 143
 144
 145 /***********************************************************************
 146  *              SwitchToThisWindow (USER32.@)
 147  */
 148 void WINAPI SwitchToThisWindow( HWND hwnd, BOOL restore )
 149 {
 150     ShowWindow( hwnd, restore ? SW_RESTORE : SW_SHOWMINIMIZED );
 151 }
 152
 153
 154 /***********************************************************************
 155  *              GetWindowRect (USER32.@)
 156  */
 157 BOOL WINAPI GetWindowRect( HWND hwnd, LPRECT rect )
 158 {
 159     BOOL ret = WIN_GetRectangles( hwnd, rect, NULL );
 160     if (ret)
 161     {
 162         MapWindowPoints( GetAncestor( hwnd, GA_PARENT ), 0, (POINT *)rect, 2 );
 163         TRACE( "hwnd %p (%ld,%ld)-(%ld,%ld)\n",
 164                hwnd, rect->left, rect->top, rect->right, rect->bottom);
 165     }
 166     return ret;
 167 }
 168
 169
 170 /***********************************************************************
 171  *              GetWindowRgn (USER32.@)
 172  */
 173 int WINAPI GetWindowRgn ( HWND hwnd, HRGN hrgn )
 174 {
 175     int nRet = ERROR;
 176     NTSTATUS status;
 177     HRGN win_rgn = 0;
 178     RGNDATA *data;
 179     size_t size = 256;
 180
 181     do
 182     {
 183         if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
 184         {
 185             SetLastError( ERROR_OUTOFMEMORY );
 186             return ERROR;
 187         }
 188         SERVER_START_REQ( get_window_region )
 189         {
 190             req->window = hwnd;
 191             wine_server_set_reply( req, data->Buffer, size );
 192             if (!(status = wine_server_call( req )))
 193             {
 194                 size_t reply_size = wine_server_reply_size( reply );
 195                 if (reply_size)
 196                 {
 197                     data->rdh.dwSize   = sizeof(data->rdh);
 198                     data->rdh.iType    = RDH_RECTANGLES;
 199                     data->rdh.nCount   = reply_size / sizeof(RECT);
 200                     data->rdh.nRgnSize = reply_size;
 201                     win_rgn = ExtCreateRegion( NULL, size, data );
 202                 }
 203             }
 204             else size = reply->total_size;
 205         }
 206         SERVER_END_REQ;
 207         HeapFree( GetProcessHeap(), 0, data );
 208     } while (status == STATUS_BUFFER_OVERFLOW);
 209
 210     if (status) SetLastError( RtlNtStatusToDosError(status) );
 211     else if (win_rgn)
 212     {
 213         nRet = CombineRgn( hrgn, win_rgn, 0, RGN_COPY );
 214         DeleteObject( win_rgn );
 215     }
 216     return nRet;
 217 }
 218
 219
 220 /***********************************************************************
 221  *              SetWindowRgn (USER32.@)
 222  */
 223 int WINAPI SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL bRedraw )
 224 {
 225     static const RECT empty_rect;
 226     BOOL ret;
 227
 228     if (hrgn)
 229     {
 230         RGNDATA *data;
 231         DWORD size;
 232
 233         if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
 234         if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 235         if (!GetRegionData( hrgn, size, data ))
 236         {
 237             HeapFree( GetProcessHeap(), 0, data );
 238             return FALSE;
 239         }
 240         SERVER_START_REQ( set_window_region )
 241         {
 242             req->window = hwnd;
 243             if (data->rdh.nCount)
 244                 wine_server_add_data( req, data->Buffer, data->rdh.nCount * sizeof(RECT) );
 245             else
 246                 wine_server_add_data( req, &empty_rect, sizeof(empty_rect) );
 247             ret = !wine_server_call_err( req );
 248         }
 249         SERVER_END_REQ;
 250     }
 251     else  /* clear existing region */
 252     {
 253         SERVER_START_REQ( set_window_region )
 254         {
 255             req->window = hwnd;
 256             ret = !wine_server_call_err( req );
 257         }
 258         SERVER_END_REQ;
 259     }
 260
 261     if (ret && USER_Driver.pSetWindowRgn)
 262         ret = USER_Driver.pSetWindowRgn( hwnd, hrgn, bRedraw );
 263
 264     if (ret && bRedraw) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_INVALIDATE | RDW_ERASE );
 265     return ret;
 266 }
 267
 268
 269 /***********************************************************************
 270  *              GetClientRect (USER32.@)
 271  */
 272 BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
 273 {
 274     BOOL ret;
 275
 276     rect->right = rect->bottom = 0;
 277     if ((ret = WIN_GetRectangles( hwnd, NULL, rect )))
 278     {
 279         rect->right -= rect->left;
 280         rect->bottom -= rect->top;
 281     }
 282     rect->left = rect->top = 0;
 283     return ret;
 284 }
 285
 286
 287 /*******************************************************************
 288  *              ClientToScreen (USER32.@)
 289  */
 290 BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
 291 {
 292     MapWindowPoints( hwnd, 0, lppnt, 1 );
 293     return TRUE;
 294 }
 295
 296
 297 /*******************************************************************
 298  *              ScreenToClient (USER32.@)
 299  */
 300 BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
 301 {
 302     MapWindowPoints( 0, hwnd, lppnt, 1 );
 303     return TRUE;
 304 }
 305
 306
 307 /***********************************************************************
 308  *           list_children_from_point
 309  *
 310  * Get the list of children that can contain point from the server.
 311  * Point is in screen coordinates.
 312  * Returned list must be freed by caller.
 313  */
 314 static HWND *list_children_from_point( HWND hwnd, POINT pt )
 315 {
 316     HWND *list;
 317     int size = 32;
 318
 319     for (;;)
 320     {
 321         int count = 0;
 322
 323         if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) break;
 324
 325         SERVER_START_REQ( get_window_children_from_point )
 326         {
 327             req->parent = hwnd;
 328             req->x = pt.x;
 329             req->y = pt.y;
 330             wine_server_set_reply( req, list, (size-1) * sizeof(HWND) );
 331             if (!wine_server_call( req )) count = reply->count;
 332         }
 333         SERVER_END_REQ;
 334         if (count && count < size)
 335         {
 336             list[count] = 0;
 337             return list;
 338         }
 339         HeapFree( GetProcessHeap(), 0, list );
 340         if (!count) break;
 341         size = count + 1;  /* restart with a large enough buffer */
 342     }
 343     return NULL;
 344 }
 345
 346
 347 /***********************************************************************
 348  *           WINPOS_WindowFromPoint
 349  *
 350  * Find the window and hittest for a given point.
 351  */
 352 HWND WINPOS_WindowFromPoint( HWND hwndScope, POINT pt, INT *hittest )
 353 {
 354     int i, res;
 355     HWND ret, *list;
 356
 357     if (!hwndScope) hwndScope = GetDesktopWindow();
 358
 359     *hittest = HTNOWHERE;
 360
 361     if (!(list = list_children_from_point( hwndScope, pt ))) return 0;
 362
 363     /* now determine the hittest */
 364
 365     for (i = 0; list[i]; i++)
 366     {
 367         LONG style = GetWindowLongW( list[i], GWL_STYLE );
 368
 369         /* If window is minimized or disabled, return at once */
 370         if (style & WS_MINIMIZE)
 371         {
 372             *hittest = HTCAPTION;
 373             break;
 374         }
 375         if (style & WS_DISABLED)
 376         {
 377             *hittest = HTERROR;
 378             break;
 379         }
 380         /* Send WM_NCCHITTEST (if same thread) */
 381         if (!WIN_IsCurrentThread( list[i] ))
 382         {
 383             *hittest = HTCLIENT;
 384             break;
 385         }
 386         res = SendMessageA( list[i], WM_NCHITTEST, 0, MAKELONG(pt.x,pt.y) );
 387         if (res != HTTRANSPARENT)
 388         {
 389             *hittest = res;  /* Found the window */
 390             break;
 391         }
 392         /* continue search with next window in z-order */
 393     }
 394     ret = list[i];
 395     HeapFree( GetProcessHeap(), 0, list );
 396     TRACE( "scope %p (%ld,%ld) returning %p\n", hwndScope, pt.x, pt.y, ret );
 397     return ret;
 398 }
 399
 400
 401 /*******************************************************************
 402  *              WindowFromPoint (USER32.@)
 403  */
 404 HWND WINAPI WindowFromPoint( POINT pt )
 405 {
 406     INT hittest;
 407     return WINPOS_WindowFromPoint( 0, pt, &hittest );
 408 }
 409
 410
 411 /*******************************************************************
 412  *              ChildWindowFromPoint (USER32.@)
 413  */
 414 HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
 415 {
 416     return ChildWindowFromPointEx( hwndParent, pt, CWP_ALL );
 417 }
 418
 419 /*******************************************************************
 420  *              ChildWindowFromPointEx (USER32.@)
 421  */
 422 HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
 423 {
 424     /* pt is in the client coordinates */
 425     HWND *list;
 426     int i;
 427     RECT rect;
 428     HWND retvalue;
 429
 430     GetClientRect( hwndParent, &rect );
 431     if (!PtInRect( &rect, pt )) return 0;
 432     if (!(list = WIN_ListChildren( hwndParent ))) return 0;
 433
 434     for (i = 0; list[i]; i++)
 435     {
 436         if (!WIN_GetRectangles( list[i], &rect, NULL )) continue;
 437         if (!PtInRect( &rect, pt )) continue;
 438         if (uFlags & (CWP_SKIPINVISIBLE|CWP_SKIPDISABLED))
 439         {
 440             LONG style = GetWindowLongW( list[i], GWL_STYLE );
 441             if ((uFlags & CWP_SKIPINVISIBLE) && !(style & WS_VISIBLE)) continue;
 442             if ((uFlags & CWP_SKIPDISABLED) && (style & WS_DISABLED)) continue;
 443         }
 444         if (uFlags & CWP_SKIPTRANSPARENT)
 445         {
 446             if (GetWindowLongW( list[i], GWL_EXSTYLE ) & WS_EX_TRANSPARENT) continue;
 447         }
 448         break;
 449     }
 450     retvalue = list[i];
 451     HeapFree( GetProcessHeap(), 0, list );
 452     if (!retvalue) retvalue = hwndParent;
 453     return retvalue;
 454 }
 455
 456
 457 /*******************************************************************
 458  *         WINPOS_GetWinOffset
 459  *
 460  * Calculate the offset between the origin of the two windows. Used
 461  * to implement MapWindowPoints.
 462  */
 463 static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
 464 {
 465     WND * wndPtr;
 466
 467     offset->x = offset->y = 0;
 468
 469     /* Translate source window origin to screen coords */
 470     if (hwndFrom)
 471     {
 472         HWND hwnd = hwndFrom;
 473
 474         while (hwnd)
 475         {
 476             if (hwnd == hwndTo) return;
 477             if (!(wndPtr = WIN_GetPtr( hwnd )))
 478             {
 479                 ERR( "bad hwndFrom = %p\n", hwnd );
 480                 return;
 481             }
 482             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 483             offset->x += wndPtr->rectClient.left;
 484             offset->y += wndPtr->rectClient.top;
 485             hwnd = wndPtr->parent;
 486             WIN_ReleasePtr( wndPtr );
 487         }
 488     }
 489
 490     /* Translate origin to destination window coords */
 491     if (hwndTo)
 492     {
 493         HWND hwnd = hwndTo;
 494
 495         while (hwnd)
 496         {
 497             if (!(wndPtr = WIN_GetPtr( hwnd )))
 498             {
 499                 ERR( "bad hwndTo = %p\n", hwnd );
 500                 return;
 501             }
 502             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 503             offset->x -= wndPtr->rectClient.left;
 504             offset->y -= wndPtr->rectClient.top;
 505             hwnd = wndPtr->parent;
 506             WIN_ReleasePtr( wndPtr );
 507         }
 508     }
 509     return;
 510
 511  other_process:  /* one of the parents may belong to another process, do it the hard way */
 512     offset->x = offset->y = 0;
 513     SERVER_START_REQ( get_windows_offset )
 514     {
 515         req->from = hwndFrom;
 516         req->to   = hwndTo;
 517         if (!wine_server_call( req ))
 518         {
 519             offset->x = reply->x;
 520             offset->y = reply->y;
 521         }
 522     }
 523     SERVER_END_REQ;
 524 }
 525
 526
 527 /*******************************************************************
 528  *              MapWindowPoints (USER.258)
 529  */
 530 void WINAPI MapWindowPoints16( HWND16 hwndFrom, HWND16 hwndTo,
 531                                LPPOINT16 lppt, UINT16 count )
 532 {
 533     POINT offset;
 534
 535     WINPOS_GetWinOffset( WIN_Handle32(hwndFrom), WIN_Handle32(hwndTo), &offset );
 536     while (count--)
 537     {
 538         lppt->x += offset.x;
 539         lppt->y += offset.y;
 540         lppt++;
 541     }
 542 }
 543
 544
 545 /*******************************************************************
 546  *              MapWindowPoints (USER32.@)
 547  */
 548 INT WINAPI MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, UINT count )
 549 {
 550     POINT offset;
 551
 552     WINPOS_GetWinOffset( hwndFrom, hwndTo, &offset );
 553     while (count--)
 554     {
 555         lppt->x += offset.x;
 556         lppt->y += offset.y;
 557         lppt++;
 558     }
 559     return MAKELONG( LOWORD(offset.x), LOWORD(offset.y) );
 560 }
 561
 562
 563 /***********************************************************************
 564  *              IsIconic (USER32.@)
 565  */
 566 BOOL WINAPI IsIconic(HWND hWnd)
 567 {
 568     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MINIMIZE) != 0;
 569 }
 570
 571
 572 /***********************************************************************
 573  *              IsZoomed (USER32.@)
 574  */
 575 BOOL WINAPI IsZoomed(HWND hWnd)
 576 {
 577     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MAXIMIZE) != 0;
 578 }
 579
 580
 581 /*******************************************************************
 582  *              AllowSetForegroundWindow (USER32.@)
 583  */
 584 BOOL WINAPI AllowSetForegroundWindow( DWORD procid )
 585 {
 586     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 587      * implemented, then fix this function. */
 588     return TRUE;
 589 }
 590
 591
 592 /*******************************************************************
 593  *              LockSetForegroundWindow (USER32.@)
 594  */
 595 BOOL WINAPI LockSetForegroundWindow( UINT lockcode )
 596 {
 597     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 598      * implemented, then fix this function. */
 599     return TRUE;
 600 }
 601
 602
 603 /***********************************************************************
 604  *              BringWindowToTop (USER32.@)
 605  */
 606 BOOL WINAPI BringWindowToTop( HWND hwnd )
 607 {
 608     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE );
 609 }
 610
 611
 612 /***********************************************************************
 613  *              MoveWindow (USER32.@)
 614  */
 615 BOOL WINAPI MoveWindow( HWND hwnd, INT x, INT y, INT cx, INT cy,
 616                             BOOL repaint )
 617 {
 618     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 619     if (!repaint) flags |= SWP_NOREDRAW;
 620     TRACE("%p %d,%d %dx%d %d\n", hwnd, x, y, cx, cy, repaint );
 621     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 622 }
 623
 624 /***********************************************************************
 625  *           WINPOS_InitInternalPos
 626  */
 627 static LPINTERNALPOS WINPOS_InitInternalPos( WND* wnd, POINT pt, const RECT *restoreRect )
 628 {
 629     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( wnd->hwndSelf,
 630                                                       atomInternalPos );
 631     if( !lpPos )
 632     {
 633         /* this happens when the window is minimized/maximized
 634          * for the first time (rectWindow is not adjusted yet) */
 635
 636         lpPos = HeapAlloc( GetProcessHeap(), 0, sizeof(INTERNALPOS) );
 637         if( !lpPos ) return NULL;
 638
 639         SetPropA( wnd->hwndSelf, atomInternalPos, (HANDLE)lpPos );
 640         lpPos->hwndIconTitle = 0; /* defer until needs to be shown */
 641         lpPos->rectNormal.left   = wnd->rectWindow.left;
 642         lpPos->rectNormal.top    = wnd->rectWindow.top;
 643         lpPos->rectNormal.right  = wnd->rectWindow.right;
 644         lpPos->rectNormal.bottom = wnd->rectWindow.bottom;
 645         lpPos->ptIconPos.x = lpPos->ptIconPos.y = -1;
 646         lpPos->ptMaxPos.x = lpPos->ptMaxPos.y = -1;
 647     }
 648
 649     if( wnd->dwStyle & WS_MINIMIZE )
 650     {
 651         lpPos->ptIconPos.x = pt.x;
 652         lpPos->ptIconPos.y = pt.y;
 653     }
 654     else if( wnd->dwStyle & WS_MAXIMIZE )
 655     {
 656         lpPos->ptMaxPos.x = pt.x;
 657         lpPos->ptMaxPos.y = pt.y;
 658     }
 659     else if( restoreRect )
 660     {
 661         lpPos->rectNormal.left   = restoreRect->left;
 662         lpPos->rectNormal.top    = restoreRect->top;
 663         lpPos->rectNormal.right  = restoreRect->right;
 664         lpPos->rectNormal.bottom = restoreRect->bottom;
 665     }
 666     return lpPos;
 667 }
 668
 669 /***********************************************************************
 670  *           WINPOS_RedrawIconTitle
 671  */
 672 BOOL WINPOS_RedrawIconTitle( HWND hWnd )
 673 {
 674     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hWnd, atomInternalPos );
 675     if( lpPos )
 676     {
 677         if( lpPos->hwndIconTitle )
 678         {
 679             SendMessageA( lpPos->hwndIconTitle, WM_SHOWWINDOW, TRUE, 0);
 680             InvalidateRect( lpPos->hwndIconTitle, NULL, TRUE );
 681             return TRUE;
 682         }
 683     }
 684     return FALSE;
 685 }
 686
 687 /***********************************************************************
 688  *           WINPOS_ShowIconTitle
 689  */
 690 BOOL WINPOS_ShowIconTitle( HWND hwnd, BOOL bShow )
 691 {
 692     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 693
 694     if( lpPos && !(GetWindowLongA( hwnd, GWL_EXSTYLE) & WS_EX_MANAGED))
 695     {
 696         HWND title = lpPos->hwndIconTitle;
 697
 698         TRACE("%p %i\n", hwnd, (bShow != 0) );
 699
 700         if( !title )
 701             lpPos->hwndIconTitle = title = ICONTITLE_Create( hwnd );
 702         if( bShow )
 703         {
 704             if (!IsWindowVisible(title))
 705             {
 706                 SendMessageA( title, WM_SHOWWINDOW, TRUE, 0 );
 707                 SetWindowPos( title, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
 708                               SWP_NOACTIVATE | SWP_NOZORDER | SWP_SHOWWINDOW );
 709             }
 710         }
 711         else ShowWindow( title, SW_HIDE );
 712     }
 713     return FALSE;
 714 }
 715
 716 /*******************************************************************
 717  *           WINPOS_GetMinMaxInfo
 718  *
 719  * Get the minimized and maximized information for a window.
 720  */
 721 void WINPOS_GetMinMaxInfo( HWND hwnd, POINT *maxSize, POINT *maxPos,
 722                            POINT *minTrack, POINT *maxTrack )
 723 {
 724     LPINTERNALPOS lpPos;
 725     MINMAXINFO MinMax;
 726     INT xinc, yinc;
 727     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
 728     LONG exstyle = GetWindowLongA( hwnd, GWL_EXSTYLE );
 729     RECT rc;
 730
 731     /* Compute default values */
 732
 733     GetWindowRect(hwnd, &rc);
 734     MinMax.ptReserved.x = rc.left;
 735     MinMax.ptReserved.y = rc.top;
 736
 737     if (style & WS_CHILD)
 738     {
 739         if ((style & WS_CAPTION) == WS_CAPTION)
 740             style &= ~WS_BORDER; /* WS_CAPTION = WS_DLGFRAME | WS_BORDER */
 741
 742         GetClientRect(GetParent(hwnd), &rc);
 743         AdjustWindowRectEx(&rc, style, 0, exstyle);
 744
 745         /* avoid calculating this twice */
 746         style &= ~(WS_DLGFRAME | WS_BORDER | WS_THICKFRAME);
 747
 748         MinMax.ptMaxSize.x = rc.right - rc.left;
 749         MinMax.ptMaxSize.y = rc.bottom - rc.top;
 750     }
 751     else
 752     {
 753         MinMax.ptMaxSize.x = GetSystemMetrics(SM_CXSCREEN);
 754         MinMax.ptMaxSize.y = GetSystemMetrics(SM_CYSCREEN);
 755     }
 756     MinMax.ptMinTrackSize.x = GetSystemMetrics(SM_CXMINTRACK);
 757     MinMax.ptMinTrackSize.y = GetSystemMetrics(SM_CYMINTRACK);
 758     MinMax.ptMaxTrackSize.x = GetSystemMetrics(SM_CXSCREEN);
 759     MinMax.ptMaxTrackSize.y = GetSystemMetrics(SM_CYSCREEN);
 760
 761     if (HAS_DLGFRAME( style, exstyle ))
 762     {
 763         xinc = GetSystemMetrics(SM_CXDLGFRAME);
 764         yinc = GetSystemMetrics(SM_CYDLGFRAME);
 765     }
 766     else
 767     {
 768         xinc = yinc = 0;
 769         if (HAS_THICKFRAME(style))
 770         {
 771             xinc += GetSystemMetrics(SM_CXFRAME);
 772             yinc += GetSystemMetrics(SM_CYFRAME);
 773         }
 774         if (style & WS_BORDER)
 775         {
 776             xinc += GetSystemMetrics(SM_CXBORDER);
 777             yinc += GetSystemMetrics(SM_CYBORDER);
 778         }
 779     }
 780     MinMax.ptMaxSize.x += 2 * xinc;
 781     MinMax.ptMaxSize.y += 2 * yinc;
 782
 783     lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 784     if( lpPos && !EMPTYPOINT(lpPos->ptMaxPos) )
 785     {
 786         MinMax.ptMaxPosition.x = lpPos->ptMaxPos.x;
 787         MinMax.ptMaxPosition.y = lpPos->ptMaxPos.y;
 788     }
 789     else
 790     {
 791         MinMax.ptMaxPosition.x = -xinc;
 792         MinMax.ptMaxPosition.y = -yinc;
 793     }
 794
 795     SendMessageA( hwnd, WM_GETMINMAXINFO, 0, (LPARAM)&MinMax );
 796
 797       /* Some sanity checks */
 798
 799     TRACE("%ld %ld / %ld %ld / %ld %ld / %ld %ld\n",
 800                       MinMax.ptMaxSize.x, MinMax.ptMaxSize.y,
 801                       MinMax.ptMaxPosition.x, MinMax.ptMaxPosition.y,
 802                       MinMax.ptMaxTrackSize.x, MinMax.ptMaxTrackSize.y,
 803                       MinMax.ptMinTrackSize.x, MinMax.ptMinTrackSize.y);
 804     MinMax.ptMaxTrackSize.x = max( MinMax.ptMaxTrackSize.x,
 805                                    MinMax.ptMinTrackSize.x );
 806     MinMax.ptMaxTrackSize.y = max( MinMax.ptMaxTrackSize.y,
 807                                    MinMax.ptMinTrackSize.y );
 808
 809     if (maxSize) *maxSize = MinMax.ptMaxSize;
 810     if (maxPos) *maxPos = MinMax.ptMaxPosition;
 811     if (minTrack) *minTrack = MinMax.ptMinTrackSize;
 812     if (maxTrack) *maxTrack = MinMax.ptMaxTrackSize;
 813 }
 814
 815 /***********************************************************************
 816  *              ShowWindowAsync (USER32.@)
 817  *
 818  * doesn't wait; returns immediately.
 819  * used by threads to toggle windows in other (possibly hanging) threads
 820  */
 821 BOOL WINAPI ShowWindowAsync( HWND hwnd, INT cmd )
 822 {
 823     HWND full_handle;
 824
 825     if (is_broadcast(hwnd))
 826     {
 827         SetLastError( ERROR_INVALID_PARAMETER );
 828         return FALSE;
 829     }
 830
 831     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 832     {
 833         if (USER_Driver.pShowWindow)
 834             return USER_Driver.pShowWindow( full_handle, cmd );
 835         return FALSE;
 836     }
 837     return SendNotifyMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 838 }
 839
 840
 841 /***********************************************************************
 842  *              ShowWindow (USER32.@)
 843  */
 844 BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
 845 {
 846     HWND full_handle;
 847
 848     if (is_broadcast(hwnd))
 849     {
 850         SetLastError( ERROR_INVALID_PARAMETER );
 851         return FALSE;
 852     }
 853     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 854     {
 855         if (USER_Driver.pShowWindow)
 856             return USER_Driver.pShowWindow( full_handle, cmd );
 857         return FALSE;
 858     }
 859     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 860 }
 861
 862
 863 /***********************************************************************
 864  *              GetInternalWindowPos (USER32.@)
 865  */
 866 UINT WINAPI GetInternalWindowPos( HWND hwnd, LPRECT rectWnd,
 867                                       LPPOINT ptIcon )
 868 {
 869     WINDOWPLACEMENT wndpl;
 870     if (GetWindowPlacement( hwnd, &wndpl ))
 871     {
 872         if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 873         if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 874         return wndpl.showCmd;
 875     }
 876     return 0;
 877 }
 878
 879
 880 /***********************************************************************
 881  *              GetWindowPlacement (USER32.@)
 882  *
 883  * Win95:
 884  * Fails if wndpl->length of Win95 (!) apps is invalid.
 885  */
 886 BOOL WINAPI GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 887 {
 888     WND *pWnd = WIN_FindWndPtr( hwnd );
 889     LPINTERNALPOS lpPos;
 890
 891     if(!pWnd ) return FALSE;
 892
 893     lpPos = WINPOS_InitInternalPos( pWnd, *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 894     wndpl->length  = sizeof(*wndpl);
 895     if( pWnd->dwStyle & WS_MINIMIZE )
 896         wndpl->showCmd = SW_SHOWMINIMIZED;
 897     else
 898         wndpl->showCmd = ( pWnd->dwStyle & WS_MAXIMIZE ) ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL ;
 899     if( pWnd->flags & WIN_RESTORE_MAX )
 900         wndpl->flags = WPF_RESTORETOMAXIMIZED;
 901     else
 902         wndpl->flags = 0;
 903     wndpl->ptMinPosition.x = lpPos->ptIconPos.x;
 904     wndpl->ptMinPosition.y = lpPos->ptIconPos.y;
 905     wndpl->ptMaxPosition.x = lpPos->ptMaxPos.x;
 906     wndpl->ptMaxPosition.y = lpPos->ptMaxPos.y;
 907     wndpl->rcNormalPosition.left   = lpPos->rectNormal.left;
 908     wndpl->rcNormalPosition.top    = lpPos->rectNormal.top;
 909     wndpl->rcNormalPosition.right  = lpPos->rectNormal.right;
 910     wndpl->rcNormalPosition.bottom = lpPos->rectNormal.bottom;
 911     WIN_ReleaseWndPtr(pWnd);
 912     return TRUE;
 913 }
 914
 915
 916 /***********************************************************************
 917  *           WINPOS_SetPlacement
 918  */
 919 static BOOL WINPOS_SetPlacement( HWND hwnd, const WINDOWPLACEMENT *wndpl, UINT flags )
 920 {
 921     WND *pWnd = WIN_FindWndPtr( hwnd );
 922     if( pWnd )
 923     {
 924         LPINTERNALPOS lpPos = (LPINTERNALPOS)WINPOS_InitInternalPos( pWnd,
 925                              *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 926
 927         if( flags & PLACE_MIN )
 928         {
 929             lpPos->ptIconPos.x = wndpl->ptMinPosition.x;
 930             lpPos->ptIconPos.y = wndpl->ptMinPosition.y;
 931         }
 932         if( flags & PLACE_MAX )
 933         {
 934             lpPos->ptMaxPos.x = wndpl->ptMaxPosition.x;
 935             lpPos->ptMaxPos.y = wndpl->ptMaxPosition.y;
 936         }
 937         if( flags & PLACE_RECT)
 938         {
 939             lpPos->rectNormal.left   = wndpl->rcNormalPosition.left;
 940             lpPos->rectNormal.top    = wndpl->rcNormalPosition.top;
 941             lpPos->rectNormal.right  = wndpl->rcNormalPosition.right;
 942             lpPos->rectNormal.bottom = wndpl->rcNormalPosition.bottom;
 943         }
 944         if( pWnd->dwStyle & WS_MINIMIZE )
 945         {
 946             WINPOS_ShowIconTitle( pWnd->hwndSelf, FALSE );
 947             if( wndpl->flags & WPF_SETMINPOSITION && !EMPTYPOINT(lpPos->ptIconPos))
 948                 SetWindowPos( hwnd, 0, lpPos->ptIconPos.x, lpPos->ptIconPos.y,
 949                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 950         }
 951         else if( pWnd->dwStyle & WS_MAXIMIZE )
 952         {
 953             if( !EMPTYPOINT(lpPos->ptMaxPos) )
 954                 SetWindowPos( hwnd, 0, lpPos->ptMaxPos.x, lpPos->ptMaxPos.y,
 955                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 956         }
 957         else if( flags & PLACE_RECT )
 958                 SetWindowPos( hwnd, 0, lpPos->rectNormal.left, lpPos->rectNormal.top,
 959                                 lpPos->rectNormal.right - lpPos->rectNormal.left,
 960                                 lpPos->rectNormal.bottom - lpPos->rectNormal.top,
 961                                 SWP_NOZORDER | SWP_NOACTIVATE );
 962
 963         ShowWindow( hwnd, wndpl->showCmd );
 964         if( IsWindow(hwnd) && pWnd->dwStyle & WS_MINIMIZE )
 965         {
 966             if( pWnd->dwStyle & WS_VISIBLE ) WINPOS_ShowIconTitle( pWnd->hwndSelf, TRUE );
 967
 968             /* SDK: ...valid only the next time... */
 969             if( wndpl->flags & WPF_RESTORETOMAXIMIZED ) pWnd->flags |= WIN_RESTORE_MAX;
 970         }
 971         WIN_ReleaseWndPtr(pWnd);
 972         return TRUE;
 973     }
 974     return FALSE;
 975 }
 976
 977
 978 /***********************************************************************
 979  *              SetWindowPlacement (USER32.@)
 980  *
 981  * Win95:
 982  * Fails if wndpl->length of Win95 (!) apps is invalid.
 983  */
 984 BOOL WINAPI SetWindowPlacement( HWND hwnd, const WINDOWPLACEMENT *wpl )
 985 {
 986     if (!wpl) return FALSE;
 987     return WINPOS_SetPlacement( hwnd, wpl, PLACE_MIN | PLACE_MAX | PLACE_RECT );
 988 }
 989
 990
 991 /***********************************************************************
 992  *              AnimateWindow (USER32.@)
 993  *              Shows/Hides a window with an animation
 994  *              NO ANIMATION YET
 995  */
 996 BOOL WINAPI AnimateWindow(HWND hwnd, DWORD dwTime, DWORD dwFlags)
 997 {
 998         FIXME("partial stub\n");
 999
1000         /* If trying to show/hide and it's already   *
1001          * shown/hidden or invalid window, fail with *
1002          * invalid parameter                         */
1003         if(!IsWindow(hwnd) ||
1004            (IsWindowVisible(hwnd) && !(dwFlags & AW_HIDE)) ||
1005            (!IsWindowVisible(hwnd) && (dwFlags & AW_HIDE)))
1006         {
1007                 SetLastError(ERROR_INVALID_PARAMETER);
1008                 return FALSE;
1009         }
1010
1011         ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
1012
1013         return TRUE;
1014 }
1015
1016 /***********************************************************************
1017  *              SetInternalWindowPos (USER32.@)
1018  */
1019 void WINAPI SetInternalWindowPos( HWND hwnd, UINT showCmd,
1020                                     LPRECT rect, LPPOINT pt )
1021 {
1022     if( IsWindow(hwnd) )
1023     {
1024         WINDOWPLACEMENT wndpl;
1025         UINT flags;
1026
1027         wndpl.length  = sizeof(wndpl);
1028         wndpl.showCmd = showCmd;
1029         wndpl.flags = flags = 0;
1030
1031         if( pt )
1032         {
1033             flags |= PLACE_MIN;
1034             wndpl.flags |= WPF_SETMINPOSITION;
1035             wndpl.ptMinPosition = *pt;
1036         }
1037         if( rect )
1038         {
1039             flags |= PLACE_RECT;
1040             wndpl.rcNormalPosition = *rect;
1041         }
1042         WINPOS_SetPlacement( hwnd, &wndpl, flags );
1043     }
1044 }
1045
1046
1047 /*******************************************************************
1048  *         can_activate_window
1049  *
1050  * Check if we can activate the specified window.
1051  */
1052 static BOOL can_activate_window( HWND hwnd )
1053 {
1054     LONG style;
1055
1056     if (!hwnd) return FALSE;
1057     style = GetWindowLongW( hwnd, GWL_STYLE );
1058     if (!(style & WS_VISIBLE)) return FALSE;
1059     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
1060     return !(style & WS_DISABLED);
1061 }
1062
1063
1064 /*******************************************************************
1065  *         WINPOS_ActivateOtherWindow
1066  *
1067  *  Activates window other than pWnd.
1068  */
1069 void WINPOS_ActivateOtherWindow(HWND hwnd)
1070 {
1071     HWND hwndTo, fg;
1072
1073     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
1074     {
1075         hwndTo = GetAncestor( hwndTo, GA_ROOT );
1076         if (can_activate_window( hwndTo )) goto done;
1077     }
1078
1079     hwndTo = hwnd;
1080     for (;;)
1081     {
1082         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
1083         if (can_activate_window( hwndTo )) break;
1084     }
1085
1086  done:
1087     fg = GetForegroundWindow();
1088     TRACE("win = %p fg = %p\n", hwndTo, fg);
1089     if (!fg || (hwnd == fg))
1090     {
1091         if (SetForegroundWindow( hwndTo )) return;
1092     }
1093     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
1094 }
1095
1096
1097 /***********************************************************************
1098  *           WINPOS_HandleWindowPosChanging16
1099  *
1100  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1101  */
1102 LONG WINPOS_HandleWindowPosChanging16( HWND hwnd, WINDOWPOS16 *winpos )
1103 {
1104     POINT minTrack, maxTrack;
1105     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1106
1107     if (winpos->flags & SWP_NOSIZE) return 0;
1108     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1109     {
1110         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1111         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1112         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1113         if (!(style & WS_MINIMIZE))
1114         {
1115             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1116             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1117         }
1118     }
1119     return 0;
1120 }
1121
1122
1123 /***********************************************************************
1124  *           WINPOS_HandleWindowPosChanging
1125  *
1126  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1127  */
1128 LONG WINPOS_HandleWindowPosChanging( HWND hwnd, WINDOWPOS *winpos )
1129 {
1130     POINT minTrack, maxTrack;
1131     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1132
1133     if (winpos->flags & SWP_NOSIZE) return 0;
1134     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1135     {
1136         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1137         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1138         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1139         if (!(style & WS_MINIMIZE))
1140         {
1141             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1142             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1143         }
1144     }
1145     return 0;
1146 }
1147
1148
1149 /***********************************************************************
1150  *           dump_winpos_flags
1151  */
1152 static void dump_winpos_flags(UINT flags)
1153 {
1154     TRACE("flags:");
1155     if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
1156     if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
1157     if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
1158     if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
1159     if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
1160     if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
1161     if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
1162     if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
1163     if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
1164     if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
1165     if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
1166     if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
1167     if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
1168
1169 #define DUMPED_FLAGS \
1170     (SWP_NOSIZE | \
1171     SWP_NOMOVE | \
1172     SWP_NOZORDER | \
1173     SWP_NOREDRAW | \
1174     SWP_NOACTIVATE | \
1175     SWP_FRAMECHANGED | \
1176     SWP_SHOWWINDOW | \
1177     SWP_HIDEWINDOW | \
1178     SWP_NOCOPYBITS | \
1179     SWP_NOOWNERZORDER | \
1180     SWP_NOSENDCHANGING | \
1181     SWP_DEFERERASE | \
1182     SWP_ASYNCWINDOWPOS)
1183
1184     if(flags & ~DUMPED_FLAGS) TRACE(" %08x", flags & ~DUMPED_FLAGS);
1185     TRACE("\n");
1186 #undef DUMPED_FLAGS
1187 }
1188
1189 /***********************************************************************
1190  *              SetWindowPos (USER32.@)
1191  */
1192 BOOL WINAPI SetWindowPos( HWND hwnd, HWND hwndInsertAfter,
1193                           INT x, INT y, INT cx, INT cy, UINT flags )
1194 {
1195     WINDOWPOS winpos;
1196
1197     TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1198           hwnd, hwndInsertAfter, x, y, cx, cy, flags);
1199     if(TRACE_ON(win)) dump_winpos_flags(flags);
1200
1201     if (is_broadcast(hwnd))
1202     {
1203         SetLastError( ERROR_INVALID_PARAMETER );
1204         return FALSE;
1205     }
1206
1207     winpos.hwnd = WIN_GetFullHandle(hwnd);
1208     winpos.hwndInsertAfter = WIN_GetFullHandle(hwndInsertAfter);
1209     winpos.x = x;
1210     winpos.y = y;
1211     winpos.cx = cx;
1212     winpos.cy = cy;
1213     winpos.flags = flags;
1214     if (WIN_IsCurrentThread( hwnd ))
1215     {
1216         if (USER_Driver.pSetWindowPos)
1217             return USER_Driver.pSetWindowPos( &winpos );
1218         return FALSE;
1219     }
1220     return SendMessageW( winpos.hwnd, WM_WINE_SETWINDOWPOS, 0, (LPARAM)&winpos );
1221 }
1222
1223
1224 /***********************************************************************
1225  *              BeginDeferWindowPos (USER32.@)
1226  */
1227 HDWP WINAPI BeginDeferWindowPos( INT count )
1228 {
1229     HDWP handle;
1230     DWP *pDWP;
1231
1232     TRACE("%d\n", count);
1233
1234     if (count < 0)
1235     {
1236         SetLastError(ERROR_INVALID_PARAMETER);
1237         return 0;
1238     }
1239     /* Windows allows zero count, in which case it allocates context for 8 moves */
1240     if (count == 0) count = 8;
1241
1242     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1243     if (!handle) return 0;
1244     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1245     pDWP->actualCount    = 0;
1246     pDWP->suggestedCount = count;
1247     pDWP->valid          = TRUE;
1248     pDWP->wMagic         = DWP_MAGIC;
1249     pDWP->hwndParent     = 0;
1250
1251     TRACE("returning hdwp %p\n", handle);
1252     return handle;
1253 }
1254
1255
1256 /***********************************************************************
1257  *              DeferWindowPos (USER32.@)
1258  */
1259 HDWP WINAPI DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter,
1260                                 INT x, INT y, INT cx, INT cy,
1261                                 UINT flags )
1262 {
1263     DWP *pDWP;
1264     int i;
1265     HDWP newhdwp = hdwp,retvalue;
1266
1267     TRACE("hdwp %p, hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1268           hdwp, hwnd, hwndAfter, x, y, cx, cy, flags);
1269
1270     hwnd = WIN_GetFullHandle( hwnd );
1271     if (hwnd == GetDesktopWindow()) return 0;
1272
1273     if (!(pDWP = USER_HEAP_LIN_ADDR( hdwp ))) return 0;
1274
1275     USER_Lock();
1276
1277     for (i = 0; i < pDWP->actualCount; i++)
1278     {
1279         if (pDWP->winPos[i].hwnd == hwnd)
1280         {
1281               /* Merge with the other changes */
1282             if (!(flags & SWP_NOZORDER))
1283             {
1284                 pDWP->winPos[i].hwndInsertAfter = WIN_GetFullHandle(hwndAfter);
1285             }
1286             if (!(flags & SWP_NOMOVE))
1287             {
1288                 pDWP->winPos[i].x = x;
1289                 pDWP->winPos[i].y = y;
1290             }
1291             if (!(flags & SWP_NOSIZE))
1292             {
1293                 pDWP->winPos[i].cx = cx;
1294                 pDWP->winPos[i].cy = cy;
1295             }
1296             pDWP->winPos[i].flags &= flags | ~(SWP_NOSIZE | SWP_NOMOVE |
1297                                                SWP_NOZORDER | SWP_NOREDRAW |
1298                                                SWP_NOACTIVATE | SWP_NOCOPYBITS|
1299                                                SWP_NOOWNERZORDER);
1300             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1301                                               SWP_FRAMECHANGED);
1302             retvalue = hdwp;
1303             goto END;
1304         }
1305     }
1306     if (pDWP->actualCount >= pDWP->suggestedCount)
1307     {
1308         newhdwp = USER_HEAP_REALLOC( hdwp,
1309                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1310         if (!newhdwp)
1311         {
1312             retvalue = 0;
1313             goto END;
1314         }
1315         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1316         pDWP->suggestedCount++;
1317     }
1318     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1319     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1320     pDWP->winPos[pDWP->actualCount].x = x;
1321     pDWP->winPos[pDWP->actualCount].y = y;
1322     pDWP->winPos[pDWP->actualCount].cx = cx;
1323     pDWP->winPos[pDWP->actualCount].cy = cy;
1324     pDWP->winPos[pDWP->actualCount].flags = flags;
1325     pDWP->actualCount++;
1326     retvalue = newhdwp;
1327 END:
1328     USER_Unlock();
1329     return retvalue;
1330 }
1331
1332
1333 /***********************************************************************
1334  *              EndDeferWindowPos (USER32.@)
1335  */
1336 BOOL WINAPI EndDeferWindowPos( HDWP hdwp )
1337 {
1338     DWP *pDWP;
1339     WINDOWPOS *winpos;
1340     BOOL res = TRUE;
1341     int i;
1342
1343     TRACE("%p\n", hdwp);
1344
1345     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1346     if (!pDWP) return FALSE;
1347     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1348     {
1349         if (!USER_Driver.pSetWindowPos || !(res = USER_Driver.pSetWindowPos( winpos ))) break;
1350     }
1351     USER_HEAP_FREE( hdwp );
1352     return res;
1353 }
1354
1355
1356 /***********************************************************************
1357  *              TileChildWindows (USER.199)
1358  */
1359 void WINAPI TileChildWindows16( HWND16 parent, WORD action )
1360 {
1361     FIXME("(%04x, %d): stub\n", parent, action);
1362 }
1363
1364 /***********************************************************************
1365  *              CascadeChildWindows (USER.198)
1366  */
1367 void WINAPI CascadeChildWindows16( HWND16 parent, WORD action )
1368 {
1369     FIXME("(%04x, %d): stub\n", parent, action);
1370 }