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_private.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 typedef struct
  73 {
  74     RECT16   rectNormal;
  75     POINT16  ptIconPos;
  76     POINT16  ptMaxPos;
  77     HWND     hwndIconTitle;
  78 } INTERNALPOS, *LPINTERNALPOS;
  79
  80 /* ----- internal variables ----- */
  81
  82 static LPCSTR atomInternalPos;
  83
  84
  85 /***********************************************************************
  86  *           WINPOS_CreateInternalPosAtom
  87  */
  88 BOOL WINPOS_CreateInternalPosAtom()
  89 {
  90     LPCSTR str = "SysIP";
  91     atomInternalPos = (LPCSTR)(DWORD)GlobalAddAtomA(str);
  92     return (atomInternalPos) ? TRUE : FALSE;
  93 }
  94
  95 /***********************************************************************
  96  *           WINPOS_CheckInternalPos
  97  *
  98  * Called when a window is destroyed.
  99  */
 100 void WINPOS_CheckInternalPos( HWND hwnd )
 101 {
 102     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( hwnd, atomInternalPos );
 103
 104     if( lpPos )
 105     {
 106         if( IsWindow(lpPos->hwndIconTitle) )
 107             DestroyWindow( lpPos->hwndIconTitle );
 108         HeapFree( GetProcessHeap(), 0, lpPos );
 109     }
 110 }
 111
 112 /***********************************************************************
 113  *              ArrangeIconicWindows (USER32.@)
 114  */
 115 UINT WINAPI ArrangeIconicWindows( HWND parent )
 116 {
 117     RECT rectParent;
 118     HWND hwndChild;
 119     INT x, y, xspacing, yspacing;
 120
 121     GetClientRect( parent, &rectParent );
 122     x = rectParent.left;
 123     y = rectParent.bottom;
 124     xspacing = GetSystemMetrics(SM_CXICONSPACING);
 125     yspacing = GetSystemMetrics(SM_CYICONSPACING);
 126
 127     hwndChild = GetWindow( parent, GW_CHILD );
 128     while (hwndChild)
 129     {
 130         if( IsIconic( hwndChild ) )
 131         {
 132             WINPOS_ShowIconTitle( hwndChild, FALSE );
 133
 134             SetWindowPos( hwndChild, 0, x + (xspacing - GetSystemMetrics(SM_CXICON)) / 2,
 135                             y - yspacing - GetSystemMetrics(SM_CYICON)/2, 0, 0,
 136                             SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 137             if( IsWindow(hwndChild) )
 138                 WINPOS_ShowIconTitle(hwndChild , TRUE );
 139
 140             if (x <= rectParent.right - xspacing) x += xspacing;
 141             else
 142             {
 143                 x = rectParent.left;
 144                 y -= yspacing;
 145             }
 146         }
 147         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 148     }
 149     return yspacing;
 150 }
 151
 152
 153 /***********************************************************************
 154  *              SwitchToThisWindow (USER32.@)
 155  */
 156 void WINAPI SwitchToThisWindow( HWND hwnd, BOOL restore )
 157 {
 158     ShowWindow( hwnd, restore ? SW_RESTORE : SW_SHOWMINIMIZED );
 159 }
 160
 161
 162 /***********************************************************************
 163  *              GetWindowRect (USER32.@)
 164  */
 165 BOOL WINAPI GetWindowRect( HWND hwnd, LPRECT rect )
 166 {
 167     BOOL ret = WIN_GetRectangles( hwnd, rect, NULL );
 168     if (ret)
 169     {
 170         MapWindowPoints( GetAncestor( hwnd, GA_PARENT ), 0, (POINT *)rect, 2 );
 171         TRACE( "hwnd %p (%ld,%ld)-(%ld,%ld)\n",
 172                hwnd, rect->left, rect->top, rect->right, rect->bottom);
 173     }
 174     return ret;
 175 }
 176
 177
 178 /***********************************************************************
 179  *              GetWindowRgn (USER32.@)
 180  */
 181 int WINAPI GetWindowRgn ( HWND hwnd, HRGN hrgn )
 182 {
 183     int nRet = ERROR;
 184     NTSTATUS status;
 185     HRGN win_rgn = 0;
 186     RGNDATA *data;
 187     size_t size = 256;
 188
 189     do
 190     {
 191         if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
 192         {
 193             SetLastError( ERROR_OUTOFMEMORY );
 194             return ERROR;
 195         }
 196         SERVER_START_REQ( get_window_region )
 197         {
 198             req->window = hwnd;
 199             wine_server_set_reply( req, data->Buffer, size );
 200             if (!(status = wine_server_call( req )))
 201             {
 202                 size_t reply_size = wine_server_reply_size( reply );
 203                 if (reply_size)
 204                 {
 205                     data->rdh.dwSize   = sizeof(data->rdh);
 206                     data->rdh.iType    = RDH_RECTANGLES;
 207                     data->rdh.nCount   = reply_size / sizeof(RECT);
 208                     data->rdh.nRgnSize = reply_size;
 209                     win_rgn = ExtCreateRegion( NULL, size, data );
 210                 }
 211             }
 212             else size = reply->total_size;
 213         }
 214         SERVER_END_REQ;
 215         HeapFree( GetProcessHeap(), 0, data );
 216     } while (status == STATUS_BUFFER_OVERFLOW);
 217
 218     if (status) SetLastError( RtlNtStatusToDosError(status) );
 219     else if (win_rgn)
 220     {
 221         nRet = CombineRgn( hrgn, win_rgn, 0, RGN_COPY );
 222         DeleteObject( win_rgn );
 223     }
 224     return nRet;
 225 }
 226
 227
 228 /***********************************************************************
 229  *              SetWindowRgn (USER32.@)
 230  */
 231 int WINAPI SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL bRedraw )
 232 {
 233     static const RECT empty_rect;
 234     BOOL ret;
 235
 236     if (hrgn)
 237     {
 238         RGNDATA *data;
 239         DWORD size;
 240
 241         if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
 242         if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 243         if (!GetRegionData( hrgn, size, data ))
 244         {
 245             HeapFree( GetProcessHeap(), 0, data );
 246             return FALSE;
 247         }
 248         SERVER_START_REQ( set_window_region )
 249         {
 250             req->window = hwnd;
 251             if (data->rdh.nCount)
 252                 wine_server_add_data( req, data->Buffer, data->rdh.nCount * sizeof(RECT) );
 253             else
 254                 wine_server_add_data( req, &empty_rect, sizeof(empty_rect) );
 255             ret = !wine_server_call_err( req );
 256         }
 257         SERVER_END_REQ;
 258     }
 259     else  /* clear existing region */
 260     {
 261         SERVER_START_REQ( set_window_region )
 262         {
 263             req->window = hwnd;
 264             ret = !wine_server_call_err( req );
 265         }
 266         SERVER_END_REQ;
 267     }
 268
 269     if (ret && USER_Driver.pSetWindowRgn)
 270         ret = USER_Driver.pSetWindowRgn( hwnd, hrgn, bRedraw );
 271
 272     if (ret && bRedraw) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_INVALIDATE | RDW_ERASE );
 273     return ret;
 274 }
 275
 276
 277 /***********************************************************************
 278  *              GetClientRect (USER32.@)
 279  */
 280 BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
 281 {
 282     BOOL ret;
 283
 284     rect->right = rect->bottom = 0;
 285     if ((ret = WIN_GetRectangles( hwnd, NULL, rect )))
 286     {
 287         rect->right -= rect->left;
 288         rect->bottom -= rect->top;
 289     }
 290     rect->left = rect->top = 0;
 291     return ret;
 292 }
 293
 294
 295 /*******************************************************************
 296  *              ClientToScreen (USER32.@)
 297  */
 298 BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
 299 {
 300     MapWindowPoints( hwnd, 0, lppnt, 1 );
 301     return TRUE;
 302 }
 303
 304
 305 /*******************************************************************
 306  *              ScreenToClient (USER32.@)
 307  */
 308 BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
 309 {
 310     MapWindowPoints( 0, hwnd, lppnt, 1 );
 311     return TRUE;
 312 }
 313
 314
 315 /***********************************************************************
 316  *           list_children_from_point
 317  *
 318  * Get the list of children that can contain point from the server.
 319  * Point is in screen coordinates.
 320  * Returned list must be freed by caller.
 321  */
 322 static HWND *list_children_from_point( HWND hwnd, POINT pt )
 323 {
 324     HWND *list;
 325     int size = 32;
 326
 327     for (;;)
 328     {
 329         int count = 0;
 330
 331         if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) break;
 332
 333         SERVER_START_REQ( get_window_children_from_point )
 334         {
 335             req->parent = hwnd;
 336             req->x = pt.x;
 337             req->y = pt.y;
 338             wine_server_set_reply( req, list, (size-1) * sizeof(HWND) );
 339             if (!wine_server_call( req )) count = reply->count;
 340         }
 341         SERVER_END_REQ;
 342         if (count && count < size)
 343         {
 344             list[count] = 0;
 345             return list;
 346         }
 347         HeapFree( GetProcessHeap(), 0, list );
 348         if (!count) break;
 349         size = count + 1;  /* restart with a large enough buffer */
 350     }
 351     return NULL;
 352 }
 353
 354
 355 /***********************************************************************
 356  *           WINPOS_WindowFromPoint
 357  *
 358  * Find the window and hittest for a given point.
 359  */
 360 HWND WINPOS_WindowFromPoint( HWND hwndScope, POINT pt, INT *hittest )
 361 {
 362     int i, res;
 363     HWND ret, *list;
 364
 365     if (!hwndScope) hwndScope = GetDesktopWindow();
 366
 367     *hittest = HTNOWHERE;
 368
 369     if (!(list = list_children_from_point( hwndScope, pt ))) return 0;
 370
 371     /* now determine the hittest */
 372
 373     for (i = 0; list[i]; i++)
 374     {
 375         LONG style = GetWindowLongW( list[i], GWL_STYLE );
 376
 377         /* If window is minimized or disabled, return at once */
 378         if (style & WS_MINIMIZE)
 379         {
 380             *hittest = HTCAPTION;
 381             break;
 382         }
 383         if (style & WS_DISABLED)
 384         {
 385             *hittest = HTERROR;
 386             break;
 387         }
 388         /* Send WM_NCCHITTEST (if same thread) */
 389         if (!WIN_IsCurrentThread( list[i] ))
 390         {
 391             *hittest = HTCLIENT;
 392             break;
 393         }
 394         res = SendMessageA( list[i], WM_NCHITTEST, 0, MAKELONG(pt.x,pt.y) );
 395         if (res != HTTRANSPARENT)
 396         {
 397             *hittest = res;  /* Found the window */
 398             break;
 399         }
 400         /* continue search with next window in z-order */
 401     }
 402     ret = list[i];
 403     HeapFree( GetProcessHeap(), 0, list );
 404     TRACE( "scope %p (%ld,%ld) returning %p\n", hwndScope, pt.x, pt.y, ret );
 405     return ret;
 406 }
 407
 408
 409 /*******************************************************************
 410  *              WindowFromPoint (USER32.@)
 411  */
 412 HWND WINAPI WindowFromPoint( POINT pt )
 413 {
 414     INT hittest;
 415     return WINPOS_WindowFromPoint( 0, pt, &hittest );
 416 }
 417
 418
 419 /*******************************************************************
 420  *              ChildWindowFromPoint (USER32.@)
 421  */
 422 HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
 423 {
 424     return ChildWindowFromPointEx( hwndParent, pt, CWP_ALL );
 425 }
 426
 427 /*******************************************************************
 428  *              ChildWindowFromPointEx (USER32.@)
 429  */
 430 HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
 431 {
 432     /* pt is in the client coordinates */
 433     HWND *list;
 434     int i;
 435     RECT rect;
 436     HWND retvalue;
 437
 438     GetClientRect( hwndParent, &rect );
 439     if (!PtInRect( &rect, pt )) return 0;
 440     if (!(list = WIN_ListChildren( hwndParent ))) return 0;
 441
 442     for (i = 0; list[i]; i++)
 443     {
 444         if (!WIN_GetRectangles( list[i], &rect, NULL )) continue;
 445         if (!PtInRect( &rect, pt )) continue;
 446         if (uFlags & (CWP_SKIPINVISIBLE|CWP_SKIPDISABLED))
 447         {
 448             LONG style = GetWindowLongW( list[i], GWL_STYLE );
 449             if ((uFlags & CWP_SKIPINVISIBLE) && !(style & WS_VISIBLE)) continue;
 450             if ((uFlags & CWP_SKIPDISABLED) && (style & WS_DISABLED)) continue;
 451         }
 452         if (uFlags & CWP_SKIPTRANSPARENT)
 453         {
 454             if (GetWindowLongW( list[i], GWL_EXSTYLE ) & WS_EX_TRANSPARENT) continue;
 455         }
 456         break;
 457     }
 458     retvalue = list[i];
 459     HeapFree( GetProcessHeap(), 0, list );
 460     if (!retvalue) retvalue = hwndParent;
 461     return retvalue;
 462 }
 463
 464
 465 /*******************************************************************
 466  *         WINPOS_GetWinOffset
 467  *
 468  * Calculate the offset between the origin of the two windows. Used
 469  * to implement MapWindowPoints.
 470  */
 471 static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
 472 {
 473     WND * wndPtr;
 474
 475     offset->x = offset->y = 0;
 476
 477     /* Translate source window origin to screen coords */
 478     if (hwndFrom)
 479     {
 480         HWND hwnd = hwndFrom;
 481
 482         while (hwnd)
 483         {
 484             if (hwnd == hwndTo) return;
 485             if (!(wndPtr = WIN_GetPtr( hwnd )))
 486             {
 487                 ERR( "bad hwndFrom = %p\n", hwnd );
 488                 return;
 489             }
 490             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 491             offset->x += wndPtr->rectClient.left;
 492             offset->y += wndPtr->rectClient.top;
 493             hwnd = wndPtr->parent;
 494             WIN_ReleasePtr( wndPtr );
 495         }
 496     }
 497
 498     /* Translate origin to destination window coords */
 499     if (hwndTo)
 500     {
 501         HWND hwnd = hwndTo;
 502
 503         while (hwnd)
 504         {
 505             if (!(wndPtr = WIN_GetPtr( hwnd )))
 506             {
 507                 ERR( "bad hwndTo = %p\n", hwnd );
 508                 return;
 509             }
 510             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 511             offset->x -= wndPtr->rectClient.left;
 512             offset->y -= wndPtr->rectClient.top;
 513             hwnd = wndPtr->parent;
 514             WIN_ReleasePtr( wndPtr );
 515         }
 516     }
 517     return;
 518
 519  other_process:  /* one of the parents may belong to another process, do it the hard way */
 520     offset->x = offset->y = 0;
 521     SERVER_START_REQ( get_windows_offset )
 522     {
 523         req->from = hwndFrom;
 524         req->to   = hwndTo;
 525         if (!wine_server_call( req ))
 526         {
 527             offset->x = reply->x;
 528             offset->y = reply->y;
 529         }
 530     }
 531     SERVER_END_REQ;
 532 }
 533
 534
 535 /*******************************************************************
 536  *              MapWindowPoints (USER.258)
 537  */
 538 void WINAPI MapWindowPoints16( HWND16 hwndFrom, HWND16 hwndTo,
 539                                LPPOINT16 lppt, UINT16 count )
 540 {
 541     POINT offset;
 542
 543     WINPOS_GetWinOffset( WIN_Handle32(hwndFrom), WIN_Handle32(hwndTo), &offset );
 544     while (count--)
 545     {
 546         lppt->x += offset.x;
 547         lppt->y += offset.y;
 548         lppt++;
 549     }
 550 }
 551
 552
 553 /*******************************************************************
 554  *              MapWindowPoints (USER32.@)
 555  */
 556 INT WINAPI MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, UINT count )
 557 {
 558     POINT offset;
 559
 560     WINPOS_GetWinOffset( hwndFrom, hwndTo, &offset );
 561     while (count--)
 562     {
 563         lppt->x += offset.x;
 564         lppt->y += offset.y;
 565         lppt++;
 566     }
 567     return MAKELONG( LOWORD(offset.x), LOWORD(offset.y) );
 568 }
 569
 570
 571 /***********************************************************************
 572  *              IsIconic (USER32.@)
 573  */
 574 BOOL WINAPI IsIconic(HWND hWnd)
 575 {
 576     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MINIMIZE) != 0;
 577 }
 578
 579
 580 /***********************************************************************
 581  *              IsZoomed (USER32.@)
 582  */
 583 BOOL WINAPI IsZoomed(HWND hWnd)
 584 {
 585     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MAXIMIZE) != 0;
 586 }
 587
 588
 589 /*******************************************************************
 590  *              AllowSetForegroundWindow (USER32.@)
 591  */
 592 BOOL WINAPI AllowSetForegroundWindow( DWORD procid )
 593 {
 594     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 595      * implemented, then fix this function. */
 596     return TRUE;
 597 }
 598
 599
 600 /*******************************************************************
 601  *              LockSetForegroundWindow (USER32.@)
 602  */
 603 BOOL WINAPI LockSetForegroundWindow( UINT lockcode )
 604 {
 605     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 606      * implemented, then fix this function. */
 607     return TRUE;
 608 }
 609
 610
 611 /***********************************************************************
 612  *              BringWindowToTop (USER32.@)
 613  */
 614 BOOL WINAPI BringWindowToTop( HWND hwnd )
 615 {
 616     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE );
 617 }
 618
 619
 620 /***********************************************************************
 621  *              MoveWindow (USER32.@)
 622  */
 623 BOOL WINAPI MoveWindow( HWND hwnd, INT x, INT y, INT cx, INT cy,
 624                             BOOL repaint )
 625 {
 626     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 627     if (!repaint) flags |= SWP_NOREDRAW;
 628     TRACE("%p %d,%d %dx%d %d\n", hwnd, x, y, cx, cy, repaint );
 629     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 630 }
 631
 632 /***********************************************************************
 633  *           WINPOS_InitInternalPos
 634  */
 635 static LPINTERNALPOS WINPOS_InitInternalPos( WND* wnd, POINT pt, const RECT *restoreRect )
 636 {
 637     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( wnd->hwndSelf,
 638                                                       atomInternalPos );
 639     if( !lpPos )
 640     {
 641         /* this happens when the window is minimized/maximized
 642          * for the first time (rectWindow is not adjusted yet) */
 643
 644         lpPos = HeapAlloc( GetProcessHeap(), 0, sizeof(INTERNALPOS) );
 645         if( !lpPos ) return NULL;
 646
 647         SetPropA( wnd->hwndSelf, atomInternalPos, (HANDLE)lpPos );
 648         lpPos->hwndIconTitle = 0; /* defer until needs to be shown */
 649         lpPos->rectNormal.left   = wnd->rectWindow.left;
 650         lpPos->rectNormal.top    = wnd->rectWindow.top;
 651         lpPos->rectNormal.right  = wnd->rectWindow.right;
 652         lpPos->rectNormal.bottom = wnd->rectWindow.bottom;
 653         lpPos->ptIconPos.x = lpPos->ptIconPos.y = -1;
 654         lpPos->ptMaxPos.x = lpPos->ptMaxPos.y = -1;
 655     }
 656
 657     if( wnd->dwStyle & WS_MINIMIZE )
 658     {
 659         lpPos->ptIconPos.x = pt.x;
 660         lpPos->ptIconPos.y = pt.y;
 661     }
 662     else if( wnd->dwStyle & WS_MAXIMIZE )
 663     {
 664         lpPos->ptMaxPos.x = pt.x;
 665         lpPos->ptMaxPos.y = pt.y;
 666     }
 667     else if( restoreRect )
 668     {
 669         lpPos->rectNormal.left   = restoreRect->left;
 670         lpPos->rectNormal.top    = restoreRect->top;
 671         lpPos->rectNormal.right  = restoreRect->right;
 672         lpPos->rectNormal.bottom = restoreRect->bottom;
 673     }
 674     return lpPos;
 675 }
 676
 677 /***********************************************************************
 678  *           WINPOS_RedrawIconTitle
 679  */
 680 BOOL WINPOS_RedrawIconTitle( HWND hWnd )
 681 {
 682     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hWnd, atomInternalPos );
 683     if( lpPos )
 684     {
 685         if( lpPos->hwndIconTitle )
 686         {
 687             SendMessageA( lpPos->hwndIconTitle, WM_SHOWWINDOW, TRUE, 0);
 688             InvalidateRect( lpPos->hwndIconTitle, NULL, TRUE );
 689             return TRUE;
 690         }
 691     }
 692     return FALSE;
 693 }
 694
 695 /***********************************************************************
 696  *           WINPOS_ShowIconTitle
 697  */
 698 BOOL WINPOS_ShowIconTitle( HWND hwnd, BOOL bShow )
 699 {
 700     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 701
 702     if( lpPos && !(GetWindowLongA( hwnd, GWL_EXSTYLE) & WS_EX_MANAGED))
 703     {
 704         HWND title = lpPos->hwndIconTitle;
 705
 706         TRACE("%p %i\n", hwnd, (bShow != 0) );
 707
 708         if( !title )
 709             lpPos->hwndIconTitle = title = ICONTITLE_Create( hwnd );
 710         if( bShow )
 711         {
 712             if (!IsWindowVisible(title))
 713             {
 714                 SendMessageA( title, WM_SHOWWINDOW, TRUE, 0 );
 715                 SetWindowPos( title, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
 716                               SWP_NOACTIVATE | SWP_NOZORDER | SWP_SHOWWINDOW );
 717             }
 718         }
 719         else ShowWindow( title, SW_HIDE );
 720     }
 721     return FALSE;
 722 }
 723
 724 /*******************************************************************
 725  *           WINPOS_GetMinMaxInfo
 726  *
 727  * Get the minimized and maximized information for a window.
 728  */
 729 void WINPOS_GetMinMaxInfo( HWND hwnd, POINT *maxSize, POINT *maxPos,
 730                            POINT *minTrack, POINT *maxTrack )
 731 {
 732     LPINTERNALPOS lpPos;
 733     MINMAXINFO MinMax;
 734     INT xinc, yinc;
 735     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
 736     LONG exstyle = GetWindowLongA( hwnd, GWL_EXSTYLE );
 737     RECT rc;
 738
 739     /* Compute default values */
 740
 741     GetWindowRect(hwnd, &rc);
 742     MinMax.ptReserved.x = rc.left;
 743     MinMax.ptReserved.y = rc.top;
 744
 745     if (style & WS_CHILD)
 746     {
 747         if ((style & WS_CAPTION) == WS_CAPTION)
 748             style &= ~WS_BORDER; /* WS_CAPTION = WS_DLGFRAME | WS_BORDER */
 749
 750         GetClientRect(GetParent(hwnd), &rc);
 751         AdjustWindowRectEx(&rc, style, 0, exstyle);
 752
 753         /* avoid calculating this twice */
 754         style &= ~(WS_DLGFRAME | WS_BORDER | WS_THICKFRAME);
 755
 756         MinMax.ptMaxSize.x = rc.right - rc.left;
 757         MinMax.ptMaxSize.y = rc.bottom - rc.top;
 758     }
 759     else
 760     {
 761         MinMax.ptMaxSize.x = GetSystemMetrics(SM_CXSCREEN);
 762         MinMax.ptMaxSize.y = GetSystemMetrics(SM_CYSCREEN);
 763     }
 764     MinMax.ptMinTrackSize.x = GetSystemMetrics(SM_CXMINTRACK);
 765     MinMax.ptMinTrackSize.y = GetSystemMetrics(SM_CYMINTRACK);
 766     MinMax.ptMaxTrackSize.x = GetSystemMetrics(SM_CXSCREEN);
 767     MinMax.ptMaxTrackSize.y = GetSystemMetrics(SM_CYSCREEN);
 768
 769     if (HAS_DLGFRAME( style, exstyle ))
 770     {
 771         xinc = GetSystemMetrics(SM_CXDLGFRAME);
 772         yinc = GetSystemMetrics(SM_CYDLGFRAME);
 773     }
 774     else
 775     {
 776         xinc = yinc = 0;
 777         if (HAS_THICKFRAME(style))
 778         {
 779             xinc += GetSystemMetrics(SM_CXFRAME);
 780             yinc += GetSystemMetrics(SM_CYFRAME);
 781         }
 782         if (style & WS_BORDER)
 783         {
 784             xinc += GetSystemMetrics(SM_CXBORDER);
 785             yinc += GetSystemMetrics(SM_CYBORDER);
 786         }
 787     }
 788     MinMax.ptMaxSize.x += 2 * xinc;
 789     MinMax.ptMaxSize.y += 2 * yinc;
 790
 791     lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 792     if( lpPos && !EMPTYPOINT(lpPos->ptMaxPos) )
 793     {
 794         MinMax.ptMaxPosition.x = lpPos->ptMaxPos.x;
 795         MinMax.ptMaxPosition.y = lpPos->ptMaxPos.y;
 796     }
 797     else
 798     {
 799         MinMax.ptMaxPosition.x = -xinc;
 800         MinMax.ptMaxPosition.y = -yinc;
 801     }
 802
 803     SendMessageA( hwnd, WM_GETMINMAXINFO, 0, (LPARAM)&MinMax );
 804
 805       /* Some sanity checks */
 806
 807     TRACE("%ld %ld / %ld %ld / %ld %ld / %ld %ld\n",
 808                       MinMax.ptMaxSize.x, MinMax.ptMaxSize.y,
 809                       MinMax.ptMaxPosition.x, MinMax.ptMaxPosition.y,
 810                       MinMax.ptMaxTrackSize.x, MinMax.ptMaxTrackSize.y,
 811                       MinMax.ptMinTrackSize.x, MinMax.ptMinTrackSize.y);
 812     MinMax.ptMaxTrackSize.x = max( MinMax.ptMaxTrackSize.x,
 813                                    MinMax.ptMinTrackSize.x );
 814     MinMax.ptMaxTrackSize.y = max( MinMax.ptMaxTrackSize.y,
 815                                    MinMax.ptMinTrackSize.y );
 816
 817     if (maxSize) *maxSize = MinMax.ptMaxSize;
 818     if (maxPos) *maxPos = MinMax.ptMaxPosition;
 819     if (minTrack) *minTrack = MinMax.ptMinTrackSize;
 820     if (maxTrack) *maxTrack = MinMax.ptMaxTrackSize;
 821 }
 822
 823 /***********************************************************************
 824  *              ShowWindowAsync (USER32.@)
 825  *
 826  * doesn't wait; returns immediately.
 827  * used by threads to toggle windows in other (possibly hanging) threads
 828  */
 829 BOOL WINAPI ShowWindowAsync( HWND hwnd, INT cmd )
 830 {
 831     HWND full_handle;
 832
 833     if (is_broadcast(hwnd))
 834     {
 835         SetLastError( ERROR_INVALID_PARAMETER );
 836         return FALSE;
 837     }
 838
 839     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 840     {
 841         if (USER_Driver.pShowWindow)
 842             return USER_Driver.pShowWindow( full_handle, cmd );
 843         return FALSE;
 844     }
 845     return SendNotifyMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 846 }
 847
 848
 849 /***********************************************************************
 850  *              ShowWindow (USER32.@)
 851  */
 852 BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
 853 {
 854     HWND full_handle;
 855
 856     if (is_broadcast(hwnd))
 857     {
 858         SetLastError( ERROR_INVALID_PARAMETER );
 859         return FALSE;
 860     }
 861     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 862     {
 863         if (USER_Driver.pShowWindow)
 864             return USER_Driver.pShowWindow( full_handle, cmd );
 865         return FALSE;
 866     }
 867     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 868 }
 869
 870
 871 /***********************************************************************
 872  *              GetInternalWindowPos (USER32.@)
 873  */
 874 UINT WINAPI GetInternalWindowPos( HWND hwnd, LPRECT rectWnd,
 875                                       LPPOINT ptIcon )
 876 {
 877     WINDOWPLACEMENT wndpl;
 878     if (GetWindowPlacement( hwnd, &wndpl ))
 879     {
 880         if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 881         if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 882         return wndpl.showCmd;
 883     }
 884     return 0;
 885 }
 886
 887
 888 /***********************************************************************
 889  *              GetWindowPlacement (USER32.@)
 890  *
 891  * Win95:
 892  * Fails if wndpl->length of Win95 (!) apps is invalid.
 893  */
 894 BOOL WINAPI GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 895 {
 896     WND *pWnd = WIN_FindWndPtr( hwnd );
 897     LPINTERNALPOS lpPos;
 898
 899     if(!pWnd ) return FALSE;
 900
 901     lpPos = WINPOS_InitInternalPos( pWnd, *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 902     wndpl->length  = sizeof(*wndpl);
 903     if( pWnd->dwStyle & WS_MINIMIZE )
 904         wndpl->showCmd = SW_SHOWMINIMIZED;
 905     else
 906         wndpl->showCmd = ( pWnd->dwStyle & WS_MAXIMIZE ) ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL ;
 907     if( pWnd->flags & WIN_RESTORE_MAX )
 908         wndpl->flags = WPF_RESTORETOMAXIMIZED;
 909     else
 910         wndpl->flags = 0;
 911     wndpl->ptMinPosition.x = lpPos->ptIconPos.x;
 912     wndpl->ptMinPosition.y = lpPos->ptIconPos.y;
 913     wndpl->ptMaxPosition.x = lpPos->ptMaxPos.x;
 914     wndpl->ptMaxPosition.y = lpPos->ptMaxPos.y;
 915     wndpl->rcNormalPosition.left   = lpPos->rectNormal.left;
 916     wndpl->rcNormalPosition.top    = lpPos->rectNormal.top;
 917     wndpl->rcNormalPosition.right  = lpPos->rectNormal.right;
 918     wndpl->rcNormalPosition.bottom = lpPos->rectNormal.bottom;
 919     WIN_ReleaseWndPtr(pWnd);
 920     return TRUE;
 921 }
 922
 923
 924 /***********************************************************************
 925  *           WINPOS_SetPlacement
 926  */
 927 static BOOL WINPOS_SetPlacement( HWND hwnd, const WINDOWPLACEMENT *wndpl, UINT flags )
 928 {
 929     WND *pWnd = WIN_FindWndPtr( hwnd );
 930     if( pWnd )
 931     {
 932         LPINTERNALPOS lpPos = (LPINTERNALPOS)WINPOS_InitInternalPos( pWnd,
 933                              *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 934
 935         if( flags & PLACE_MIN )
 936         {
 937             lpPos->ptIconPos.x = wndpl->ptMinPosition.x;
 938             lpPos->ptIconPos.y = wndpl->ptMinPosition.y;
 939         }
 940         if( flags & PLACE_MAX )
 941         {
 942             lpPos->ptMaxPos.x = wndpl->ptMaxPosition.x;
 943             lpPos->ptMaxPos.y = wndpl->ptMaxPosition.y;
 944         }
 945         if( flags & PLACE_RECT)
 946         {
 947             lpPos->rectNormal.left   = wndpl->rcNormalPosition.left;
 948             lpPos->rectNormal.top    = wndpl->rcNormalPosition.top;
 949             lpPos->rectNormal.right  = wndpl->rcNormalPosition.right;
 950             lpPos->rectNormal.bottom = wndpl->rcNormalPosition.bottom;
 951         }
 952         if( pWnd->dwStyle & WS_MINIMIZE )
 953         {
 954             WINPOS_ShowIconTitle( pWnd->hwndSelf, FALSE );
 955             if( wndpl->flags & WPF_SETMINPOSITION && !EMPTYPOINT(lpPos->ptIconPos))
 956                 SetWindowPos( hwnd, 0, lpPos->ptIconPos.x, lpPos->ptIconPos.y,
 957                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 958         }
 959         else if( pWnd->dwStyle & WS_MAXIMIZE )
 960         {
 961             if( !EMPTYPOINT(lpPos->ptMaxPos) )
 962                 SetWindowPos( hwnd, 0, lpPos->ptMaxPos.x, lpPos->ptMaxPos.y,
 963                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 964         }
 965         else if( flags & PLACE_RECT )
 966                 SetWindowPos( hwnd, 0, lpPos->rectNormal.left, lpPos->rectNormal.top,
 967                                 lpPos->rectNormal.right - lpPos->rectNormal.left,
 968                                 lpPos->rectNormal.bottom - lpPos->rectNormal.top,
 969                                 SWP_NOZORDER | SWP_NOACTIVATE );
 970
 971         ShowWindow( hwnd, wndpl->showCmd );
 972         if( IsWindow(hwnd) && pWnd->dwStyle & WS_MINIMIZE )
 973         {
 974             if( pWnd->dwStyle & WS_VISIBLE ) WINPOS_ShowIconTitle( pWnd->hwndSelf, TRUE );
 975
 976             /* SDK: ...valid only the next time... */
 977             if( wndpl->flags & WPF_RESTORETOMAXIMIZED ) pWnd->flags |= WIN_RESTORE_MAX;
 978         }
 979         WIN_ReleaseWndPtr(pWnd);
 980         return TRUE;
 981     }
 982     return FALSE;
 983 }
 984
 985
 986 /***********************************************************************
 987  *              SetWindowPlacement (USER32.@)
 988  *
 989  * Win95:
 990  * Fails if wndpl->length of Win95 (!) apps is invalid.
 991  */
 992 BOOL WINAPI SetWindowPlacement( HWND hwnd, const WINDOWPLACEMENT *wpl )
 993 {
 994     if (!wpl) return FALSE;
 995     return WINPOS_SetPlacement( hwnd, wpl, PLACE_MIN | PLACE_MAX | PLACE_RECT );
 996 }
 997
 998
 999 /***********************************************************************
1000  *              AnimateWindow (USER32.@)
1001  *              Shows/Hides a window with an animation
1002  *              NO ANIMATION YET
1003  */
1004 BOOL WINAPI AnimateWindow(HWND hwnd, DWORD dwTime, DWORD dwFlags)
1005 {
1006         FIXME("partial stub\n");
1007
1008         /* If trying to show/hide and it's already   *
1009          * shown/hidden or invalid window, fail with *
1010          * invalid parameter                         */
1011         if(!IsWindow(hwnd) ||
1012            (IsWindowVisible(hwnd) && !(dwFlags & AW_HIDE)) ||
1013            (!IsWindowVisible(hwnd) && (dwFlags & AW_HIDE)))
1014         {
1015                 SetLastError(ERROR_INVALID_PARAMETER);
1016                 return FALSE;
1017         }
1018
1019         ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
1020
1021         return TRUE;
1022 }
1023
1024 /***********************************************************************
1025  *              SetInternalWindowPos (USER32.@)
1026  */
1027 void WINAPI SetInternalWindowPos( HWND hwnd, UINT showCmd,
1028                                     LPRECT rect, LPPOINT pt )
1029 {
1030     if( IsWindow(hwnd) )
1031     {
1032         WINDOWPLACEMENT wndpl;
1033         UINT flags;
1034
1035         wndpl.length  = sizeof(wndpl);
1036         wndpl.showCmd = showCmd;
1037         wndpl.flags = flags = 0;
1038
1039         if( pt )
1040         {
1041             flags |= PLACE_MIN;
1042             wndpl.flags |= WPF_SETMINPOSITION;
1043             wndpl.ptMinPosition = *pt;
1044         }
1045         if( rect )
1046         {
1047             flags |= PLACE_RECT;
1048             wndpl.rcNormalPosition = *rect;
1049         }
1050         WINPOS_SetPlacement( hwnd, &wndpl, flags );
1051     }
1052 }
1053
1054
1055 /*******************************************************************
1056  *         can_activate_window
1057  *
1058  * Check if we can activate the specified window.
1059  */
1060 static BOOL can_activate_window( HWND hwnd )
1061 {
1062     LONG style;
1063
1064     if (!hwnd) return FALSE;
1065     style = GetWindowLongW( hwnd, GWL_STYLE );
1066     if (!(style & WS_VISIBLE)) return FALSE;
1067     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
1068     return !(style & WS_DISABLED);
1069 }
1070
1071
1072 /*******************************************************************
1073  *         WINPOS_ActivateOtherWindow
1074  *
1075  *  Activates window other than pWnd.
1076  */
1077 void WINPOS_ActivateOtherWindow(HWND hwnd)
1078 {
1079     HWND hwndTo, fg;
1080
1081     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
1082     {
1083         hwndTo = GetAncestor( hwndTo, GA_ROOT );
1084         if (can_activate_window( hwndTo )) goto done;
1085     }
1086
1087     hwndTo = hwnd;
1088     for (;;)
1089     {
1090         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
1091         if (can_activate_window( hwndTo )) break;
1092     }
1093
1094  done:
1095     fg = GetForegroundWindow();
1096     TRACE("win = %p fg = %p\n", hwndTo, fg);
1097     if (!fg || (hwnd == fg))
1098     {
1099         if (SetForegroundWindow( hwndTo )) return;
1100     }
1101     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
1102 }
1103
1104
1105 /***********************************************************************
1106  *           WINPOS_HandleWindowPosChanging16
1107  *
1108  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1109  */
1110 LONG WINPOS_HandleWindowPosChanging16( HWND hwnd, WINDOWPOS16 *winpos )
1111 {
1112     POINT minTrack, maxTrack;
1113     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1114
1115     if (winpos->flags & SWP_NOSIZE) return 0;
1116     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1117     {
1118         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1119         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1120         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1121         if (!(style & WS_MINIMIZE))
1122         {
1123             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1124             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1125         }
1126     }
1127     return 0;
1128 }
1129
1130
1131 /***********************************************************************
1132  *           WINPOS_HandleWindowPosChanging
1133  *
1134  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1135  */
1136 LONG WINPOS_HandleWindowPosChanging( HWND hwnd, WINDOWPOS *winpos )
1137 {
1138     POINT minTrack, maxTrack;
1139     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1140
1141     if (winpos->flags & SWP_NOSIZE) return 0;
1142     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1143     {
1144         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1145         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1146         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1147         if (!(style & WS_MINIMIZE))
1148         {
1149             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1150             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1151         }
1152     }
1153     return 0;
1154 }
1155
1156
1157 /***********************************************************************
1158  *           dump_winpos_flags
1159  */
1160 static void dump_winpos_flags(UINT flags)
1161 {
1162     TRACE("flags:");
1163     if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
1164     if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
1165     if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
1166     if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
1167     if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
1168     if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
1169     if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
1170     if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
1171     if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
1172     if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
1173     if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
1174     if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
1175     if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
1176
1177 #define DUMPED_FLAGS \
1178     (SWP_NOSIZE | \
1179     SWP_NOMOVE | \
1180     SWP_NOZORDER | \
1181     SWP_NOREDRAW | \
1182     SWP_NOACTIVATE | \
1183     SWP_FRAMECHANGED | \
1184     SWP_SHOWWINDOW | \
1185     SWP_HIDEWINDOW | \
1186     SWP_NOCOPYBITS | \
1187     SWP_NOOWNERZORDER | \
1188     SWP_NOSENDCHANGING | \
1189     SWP_DEFERERASE | \
1190     SWP_ASYNCWINDOWPOS)
1191
1192     if(flags & ~DUMPED_FLAGS) TRACE(" %08x", flags & ~DUMPED_FLAGS);
1193     TRACE("\n");
1194 #undef DUMPED_FLAGS
1195 }
1196
1197 /***********************************************************************
1198  *              SetWindowPos (USER32.@)
1199  */
1200 BOOL WINAPI SetWindowPos( HWND hwnd, HWND hwndInsertAfter,
1201                           INT x, INT y, INT cx, INT cy, UINT flags )
1202 {
1203     WINDOWPOS winpos;
1204
1205     TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1206           hwnd, hwndInsertAfter, x, y, cx, cy, flags);
1207     if(TRACE_ON(win)) dump_winpos_flags(flags);
1208
1209     if (is_broadcast(hwnd))
1210     {
1211         SetLastError( ERROR_INVALID_PARAMETER );
1212         return FALSE;
1213     }
1214
1215     winpos.hwnd = WIN_GetFullHandle(hwnd);
1216     winpos.hwndInsertAfter = WIN_GetFullHandle(hwndInsertAfter);
1217     winpos.x = x;
1218     winpos.y = y;
1219     winpos.cx = cx;
1220     winpos.cy = cy;
1221     winpos.flags = flags;
1222     if (WIN_IsCurrentThread( hwnd ))
1223     {
1224         if (USER_Driver.pSetWindowPos)
1225             return USER_Driver.pSetWindowPos( &winpos );
1226         return FALSE;
1227     }
1228     return SendMessageW( winpos.hwnd, WM_WINE_SETWINDOWPOS, 0, (LPARAM)&winpos );
1229 }
1230
1231
1232 /***********************************************************************
1233  *              BeginDeferWindowPos (USER32.@)
1234  */
1235 HDWP WINAPI BeginDeferWindowPos( INT count )
1236 {
1237     HDWP handle;
1238     DWP *pDWP;
1239
1240     TRACE("%d\n", count);
1241
1242     if (count < 0)
1243     {
1244         SetLastError(ERROR_INVALID_PARAMETER);
1245         return 0;
1246     }
1247     /* Windows allows zero count, in which case it allocates context for 8 moves */
1248     if (count == 0) count = 8;
1249
1250     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1251     if (!handle) return 0;
1252     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1253     pDWP->actualCount    = 0;
1254     pDWP->suggestedCount = count;
1255     pDWP->valid          = TRUE;
1256     pDWP->wMagic         = DWP_MAGIC;
1257     pDWP->hwndParent     = 0;
1258
1259     TRACE("returning hdwp %p\n", handle);
1260     return handle;
1261 }
1262
1263
1264 /***********************************************************************
1265  *              DeferWindowPos (USER32.@)
1266  */
1267 HDWP WINAPI DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter,
1268                                 INT x, INT y, INT cx, INT cy,
1269                                 UINT flags )
1270 {
1271     DWP *pDWP;
1272     int i;
1273     HDWP newhdwp = hdwp,retvalue;
1274
1275     TRACE("hdwp %p, hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1276           hdwp, hwnd, hwndAfter, x, y, cx, cy, flags);
1277
1278     hwnd = WIN_GetFullHandle( hwnd );
1279     if (hwnd == GetDesktopWindow()) return 0;
1280
1281     if (!(pDWP = USER_HEAP_LIN_ADDR( hdwp ))) return 0;
1282
1283     USER_Lock();
1284
1285     for (i = 0; i < pDWP->actualCount; i++)
1286     {
1287         if (pDWP->winPos[i].hwnd == hwnd)
1288         {
1289               /* Merge with the other changes */
1290             if (!(flags & SWP_NOZORDER))
1291             {
1292                 pDWP->winPos[i].hwndInsertAfter = WIN_GetFullHandle(hwndAfter);
1293             }
1294             if (!(flags & SWP_NOMOVE))
1295             {
1296                 pDWP->winPos[i].x = x;
1297                 pDWP->winPos[i].y = y;
1298             }
1299             if (!(flags & SWP_NOSIZE))
1300             {
1301                 pDWP->winPos[i].cx = cx;
1302                 pDWP->winPos[i].cy = cy;
1303             }
1304             pDWP->winPos[i].flags &= flags | ~(SWP_NOSIZE | SWP_NOMOVE |
1305                                                SWP_NOZORDER | SWP_NOREDRAW |
1306                                                SWP_NOACTIVATE | SWP_NOCOPYBITS|
1307                                                SWP_NOOWNERZORDER);
1308             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1309                                               SWP_FRAMECHANGED);
1310             retvalue = hdwp;
1311             goto END;
1312         }
1313     }
1314     if (pDWP->actualCount >= pDWP->suggestedCount)
1315     {
1316         newhdwp = USER_HEAP_REALLOC( hdwp,
1317                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1318         if (!newhdwp)
1319         {
1320             retvalue = 0;
1321             goto END;
1322         }
1323         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1324         pDWP->suggestedCount++;
1325     }
1326     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1327     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1328     pDWP->winPos[pDWP->actualCount].x = x;
1329     pDWP->winPos[pDWP->actualCount].y = y;
1330     pDWP->winPos[pDWP->actualCount].cx = cx;
1331     pDWP->winPos[pDWP->actualCount].cy = cy;
1332     pDWP->winPos[pDWP->actualCount].flags = flags;
1333     pDWP->actualCount++;
1334     retvalue = newhdwp;
1335 END:
1336     USER_Unlock();
1337     return retvalue;
1338 }
1339
1340
1341 /***********************************************************************
1342  *              EndDeferWindowPos (USER32.@)
1343  */
1344 BOOL WINAPI EndDeferWindowPos( HDWP hdwp )
1345 {
1346     DWP *pDWP;
1347     WINDOWPOS *winpos;
1348     BOOL res = TRUE;
1349     int i;
1350
1351     TRACE("%p\n", hdwp);
1352
1353     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1354     if (!pDWP) return FALSE;
1355     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1356     {
1357         if (!USER_Driver.pSetWindowPos || !(res = USER_Driver.pSetWindowPos( winpos ))) break;
1358     }
1359     USER_HEAP_FREE( hdwp );
1360     return res;
1361 }
1362
1363
1364 /***********************************************************************
1365  *              TileChildWindows (USER.199)
1366  */
1367 void WINAPI TileChildWindows16( HWND16 parent, WORD action )
1368 {
1369     FIXME("(%04x, %d): stub\n", parent, action);
1370 }
1371
1372 /***********************************************************************
1373  *              CascadeChildWindows (USER.198)
1374  */
1375 void WINAPI CascadeChildWindows16( HWND16 parent, WORD action )
1376 {
1377     FIXME("(%04x, %d): stub\n", parent, action);
1378 }