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