dlls/user/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include "ntstatus.h"
  28 #define WIN32_NO_STATUS
  29 #include "winerror.h"
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "wingdi.h"
  33 #include "winerror.h"
  34 #include "wine/winuser16.h"
  35 #include "wine/server.h"
  36 #include "controls.h"
  37 #include "user_private.h"
  38 #include "win.h"
  39 #include "winpos.h"
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(win);
  43
  44 #define HAS_DLGFRAME(style,exStyle) \
  45     (((exStyle) & WS_EX_DLGMODALFRAME) || \
  46      (((style) & WS_DLGFRAME) && !((style) & WS_BORDER)))
  47
  48 #define HAS_THICKFRAME(style) \
  49     (((style) & WS_THICKFRAME) && \
  50      !(((style) & (WS_DLGFRAME|WS_BORDER)) == WS_DLGFRAME))
  51
  52 #define EMPTYPOINT(pt)          ((*(LONG*)&(pt)) == -1)
  53
  54 #define PLACE_MIN               0x0001
  55 #define PLACE_MAX               0x0002
  56 #define PLACE_RECT              0x0004
  57
  58
  59 #define DWP_MAGIC  ((INT)('W' | ('P' << 8) | ('O' << 16) | ('S' << 24)))
  60
  61 typedef struct
  62 {
  63     INT       actualCount;
  64     INT       suggestedCount;
  65     BOOL      valid;
  66     INT       wMagic;
  67     HWND      hwndParent;
  68     WINDOWPOS winPos[1];
  69 } DWP;
  70
  71 typedef struct
  72 {
  73     RECT16   rectNormal;
  74     POINT16  ptIconPos;
  75     POINT16  ptMaxPos;
  76     HWND     hwndIconTitle;
  77 } INTERNALPOS, *LPINTERNALPOS;
  78
  79 /* ----- internal functions ----- */
  80
  81 static const WCHAR SysIP_W[] = { 'S','y','s','I','P',0 };
  82
  83 static inline INTERNALPOS *get_internal_pos( HWND hwnd )
  84 {
  85     return GetPropW( hwnd, SysIP_W );
  86 }
  87
  88 static inline void set_internal_pos( HWND hwnd, INTERNALPOS *pos )
  89 {
  90     SetPropW( hwnd, SysIP_W, pos );
  91 }
  92
  93 /***********************************************************************
  94  *           WINPOS_CheckInternalPos
  95  *
  96  * Called when a window is destroyed.
  97  */
  98 void WINPOS_CheckInternalPos( HWND hwnd )
  99 {
 100     LPINTERNALPOS lpPos = get_internal_pos( hwnd );
 101
 102     if ( lpPos )
 103     {
 104         if( IsWindow(lpPos->hwndIconTitle) )
 105             DestroyWindow( lpPos->hwndIconTitle );
 106         HeapFree( GetProcessHeap(), 0, lpPos );
 107     }
 108 }
 109
 110 /***********************************************************************
 111  *              ArrangeIconicWindows (USER32.@)
 112  */
 113 UINT WINAPI ArrangeIconicWindows( HWND parent )
 114 {
 115     RECT rectParent;
 116     HWND hwndChild;
 117     INT x, y, xspacing, yspacing;
 118
 119     GetClientRect( parent, &rectParent );
 120     x = rectParent.left;
 121     y = rectParent.bottom;
 122     xspacing = GetSystemMetrics(SM_CXICONSPACING);
 123     yspacing = GetSystemMetrics(SM_CYICONSPACING);
 124
 125     hwndChild = GetWindow( parent, GW_CHILD );
 126     while (hwndChild)
 127     {
 128         if( IsIconic( hwndChild ) )
 129         {
 130             WINPOS_ShowIconTitle( hwndChild, FALSE );
 131
 132             SetWindowPos( hwndChild, 0, x + (xspacing - GetSystemMetrics(SM_CXICON)) / 2,
 133                             y - yspacing - GetSystemMetrics(SM_CYICON)/2, 0, 0,
 134                             SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 135             if( IsWindow(hwndChild) )
 136                 WINPOS_ShowIconTitle(hwndChild , TRUE );
 137
 138             if (x <= rectParent.right - xspacing) x += xspacing;
 139             else
 140             {
 141                 x = rectParent.left;
 142                 y -= yspacing;
 143             }
 144         }
 145         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 146     }
 147     return yspacing;
 148 }
 149
 150
 151 /***********************************************************************
 152  *              SwitchToThisWindow (USER32.@)
 153  */
 154 void WINAPI SwitchToThisWindow( HWND hwnd, BOOL restore )
 155 {
 156     ShowWindow( hwnd, restore ? SW_RESTORE : SW_SHOWMINIMIZED );
 157 }
 158
 159
 160 /***********************************************************************
 161  *              GetWindowRect (USER32.@)
 162  */
 163 BOOL WINAPI GetWindowRect( HWND hwnd, LPRECT rect )
 164 {
 165     BOOL ret = WIN_GetRectangles( hwnd, rect, NULL );
 166     if (ret)
 167     {
 168         MapWindowPoints( GetAncestor( hwnd, GA_PARENT ), 0, (POINT *)rect, 2 );
 169         TRACE( "hwnd %p (%ld,%ld)-(%ld,%ld)\n",
 170                hwnd, rect->left, rect->top, rect->right, rect->bottom);
 171     }
 172     return ret;
 173 }
 174
 175
 176 /***********************************************************************
 177  *              GetWindowRgn (USER32.@)
 178  */
 179 int WINAPI GetWindowRgn ( HWND hwnd, HRGN hrgn )
 180 {
 181     int nRet = ERROR;
 182     NTSTATUS status;
 183     HRGN win_rgn = 0;
 184     RGNDATA *data;
 185     size_t size = 256;
 186
 187     do
 188     {
 189         if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
 190         {
 191             SetLastError( ERROR_OUTOFMEMORY );
 192             return ERROR;
 193         }
 194         SERVER_START_REQ( get_window_region )
 195         {
 196             req->window = hwnd;
 197             wine_server_set_reply( req, data->Buffer, size );
 198             if (!(status = wine_server_call( req )))
 199             {
 200                 size_t reply_size = wine_server_reply_size( reply );
 201                 if (reply_size)
 202                 {
 203                     data->rdh.dwSize   = sizeof(data->rdh);
 204                     data->rdh.iType    = RDH_RECTANGLES;
 205                     data->rdh.nCount   = reply_size / sizeof(RECT);
 206                     data->rdh.nRgnSize = reply_size;
 207                     win_rgn = ExtCreateRegion( NULL, size, data );
 208                 }
 209             }
 210             else size = reply->total_size;
 211         }
 212         SERVER_END_REQ;
 213         HeapFree( GetProcessHeap(), 0, data );
 214     } while (status == STATUS_BUFFER_OVERFLOW);
 215
 216     if (status) SetLastError( RtlNtStatusToDosError(status) );
 217     else if (win_rgn)
 218     {
 219         nRet = CombineRgn( hrgn, win_rgn, 0, RGN_COPY );
 220         DeleteObject( win_rgn );
 221     }
 222     return nRet;
 223 }
 224
 225
 226 /***********************************************************************
 227  *              SetWindowRgn (USER32.@)
 228  */
 229 int WINAPI SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL bRedraw )
 230 {
 231     static const RECT empty_rect;
 232     BOOL ret;
 233
 234     if (hrgn)
 235     {
 236         RGNDATA *data;
 237         DWORD size;
 238
 239         if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
 240         if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 241         if (!GetRegionData( hrgn, size, data ))
 242         {
 243             HeapFree( GetProcessHeap(), 0, data );
 244             return FALSE;
 245         }
 246         SERVER_START_REQ( set_window_region )
 247         {
 248             req->window = hwnd;
 249             if (data->rdh.nCount)
 250                 wine_server_add_data( req, data->Buffer, data->rdh.nCount * sizeof(RECT) );
 251             else
 252                 wine_server_add_data( req, &empty_rect, sizeof(empty_rect) );
 253             ret = !wine_server_call_err( req );
 254         }
 255         SERVER_END_REQ;
 256     }
 257     else  /* clear existing region */
 258     {
 259         SERVER_START_REQ( set_window_region )
 260         {
 261             req->window = hwnd;
 262             ret = !wine_server_call_err( req );
 263         }
 264         SERVER_END_REQ;
 265     }
 266
 267     if (ret) ret = USER_Driver->pSetWindowRgn( hwnd, hrgn, bRedraw );
 268
 269     if (ret && bRedraw) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_INVALIDATE | RDW_ERASE );
 270     return ret;
 271 }
 272
 273
 274 /***********************************************************************
 275  *              GetClientRect (USER32.@)
 276  */
 277 BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
 278 {
 279     BOOL ret;
 280
 281     if ((ret = WIN_GetRectangles( hwnd, NULL, rect )))
 282     {
 283         rect->right -= rect->left;
 284         rect->bottom -= rect->top;
 285         rect->left = rect->top = 0;
 286     }
 287     return ret;
 288 }
 289
 290
 291 /*******************************************************************
 292  *              ClientToScreen (USER32.@)
 293  */
 294 BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
 295 {
 296     MapWindowPoints( hwnd, 0, lppnt, 1 );
 297     return TRUE;
 298 }
 299
 300
 301 /*******************************************************************
 302  *              ScreenToClient (USER32.@)
 303  */
 304 BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
 305 {
 306     MapWindowPoints( 0, hwnd, lppnt, 1 );
 307     return TRUE;
 308 }
 309
 310
 311 /***********************************************************************
 312  *           list_children_from_point
 313  *
 314  * Get the list of children that can contain point from the server.
 315  * Point is in screen coordinates.
 316  * Returned list must be freed by caller.
 317  */
 318 static HWND *list_children_from_point( HWND hwnd, POINT pt )
 319 {
 320     HWND *list;
 321     int size = 32;
 322
 323     for (;;)
 324     {
 325         int count = 0;
 326
 327         if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) break;
 328
 329         SERVER_START_REQ( get_window_children_from_point )
 330         {
 331             req->parent = hwnd;
 332             req->x = pt.x;
 333             req->y = pt.y;
 334             wine_server_set_reply( req, list, (size-1) * sizeof(HWND) );
 335             if (!wine_server_call( req )) count = reply->count;
 336         }
 337         SERVER_END_REQ;
 338         if (count && count < size)
 339         {
 340             list[count] = 0;
 341             return list;
 342         }
 343         HeapFree( GetProcessHeap(), 0, list );
 344         if (!count) break;
 345         size = count + 1;  /* restart with a large enough buffer */
 346     }
 347     return NULL;
 348 }
 349
 350
 351 /***********************************************************************
 352  *           WINPOS_WindowFromPoint
 353  *
 354  * Find the window and hittest for a given point.
 355  */
 356 HWND WINPOS_WindowFromPoint( HWND hwndScope, POINT pt, INT *hittest )
 357 {
 358     int i, res;
 359     HWND ret, *list;
 360
 361     if (!hwndScope) hwndScope = GetDesktopWindow();
 362
 363     *hittest = HTNOWHERE;
 364
 365     if (!(list = list_children_from_point( hwndScope, pt ))) return 0;
 366
 367     /* now determine the hittest */
 368
 369     for (i = 0; list[i]; i++)
 370     {
 371         LONG style = GetWindowLongW( list[i], GWL_STYLE );
 372
 373         /* If window is minimized or disabled, return at once */
 374         if (style & WS_MINIMIZE)
 375         {
 376             *hittest = HTCAPTION;
 377             break;
 378         }
 379         if (style & WS_DISABLED)
 380         {
 381             *hittest = HTERROR;
 382             break;
 383         }
 384         /* Send WM_NCCHITTEST (if same thread) */
 385         if (!WIN_IsCurrentThread( list[i] ))
 386         {
 387             *hittest = HTCLIENT;
 388             break;
 389         }
 390         res = SendMessageW( list[i], WM_NCHITTEST, 0, MAKELONG(pt.x,pt.y) );
 391         if (res != HTTRANSPARENT)
 392         {
 393             *hittest = res;  /* Found the window */
 394             break;
 395         }
 396         /* continue search with next window in z-order */
 397     }
 398     ret = list[i];
 399     HeapFree( GetProcessHeap(), 0, list );
 400     TRACE( "scope %p (%ld,%ld) returning %p\n", hwndScope, pt.x, pt.y, ret );
 401     return ret;
 402 }
 403
 404
 405 /*******************************************************************
 406  *              WindowFromPoint (USER32.@)
 407  */
 408 HWND WINAPI WindowFromPoint( POINT pt )
 409 {
 410     INT hittest;
 411     return WINPOS_WindowFromPoint( 0, pt, &hittest );
 412 }
 413
 414
 415 /*******************************************************************
 416  *              ChildWindowFromPoint (USER32.@)
 417  */
 418 HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
 419 {
 420     return ChildWindowFromPointEx( hwndParent, pt, CWP_ALL );
 421 }
 422
 423 /*******************************************************************
 424  *              ChildWindowFromPointEx (USER32.@)
 425  */
 426 HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
 427 {
 428     /* pt is in the client coordinates */
 429     HWND *list;
 430     int i;
 431     RECT rect;
 432     HWND retvalue;
 433
 434     GetClientRect( hwndParent, &rect );
 435     if (!PtInRect( &rect, pt )) return 0;
 436     if (!(list = WIN_ListChildren( hwndParent ))) return hwndParent;
 437
 438     for (i = 0; list[i]; i++)
 439     {
 440         if (!WIN_GetRectangles( list[i], &rect, NULL )) continue;
 441         if (!PtInRect( &rect, pt )) continue;
 442         if (uFlags & (CWP_SKIPINVISIBLE|CWP_SKIPDISABLED))
 443         {
 444             LONG style = GetWindowLongW( list[i], GWL_STYLE );
 445             if ((uFlags & CWP_SKIPINVISIBLE) && !(style & WS_VISIBLE)) continue;
 446             if ((uFlags & CWP_SKIPDISABLED) && (style & WS_DISABLED)) continue;
 447         }
 448         if (uFlags & CWP_SKIPTRANSPARENT)
 449         {
 450             if (GetWindowLongW( list[i], GWL_EXSTYLE ) & WS_EX_TRANSPARENT) continue;
 451         }
 452         break;
 453     }
 454     retvalue = list[i];
 455     HeapFree( GetProcessHeap(), 0, list );
 456     if (!retvalue) retvalue = hwndParent;
 457     return retvalue;
 458 }
 459
 460
 461 /*******************************************************************
 462  *         WINPOS_GetWinOffset
 463  *
 464  * Calculate the offset between the origin of the two windows. Used
 465  * to implement MapWindowPoints.
 466  */
 467 static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
 468 {
 469     WND * wndPtr;
 470
 471     offset->x = offset->y = 0;
 472
 473     /* Translate source window origin to screen coords */
 474     if (hwndFrom)
 475     {
 476         HWND hwnd = hwndFrom;
 477
 478         while (hwnd)
 479         {
 480             if (hwnd == hwndTo) return;
 481             if (!(wndPtr = WIN_GetPtr( hwnd )))
 482             {
 483                 ERR( "bad hwndFrom = %p\n", hwnd );
 484                 return;
 485             }
 486             if (wndPtr == WND_DESKTOP) break;
 487             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 488             offset->x += wndPtr->rectClient.left;
 489             offset->y += wndPtr->rectClient.top;
 490             hwnd = wndPtr->parent;
 491             WIN_ReleasePtr( wndPtr );
 492         }
 493     }
 494
 495     /* Translate origin to destination window coords */
 496     if (hwndTo)
 497     {
 498         HWND hwnd = hwndTo;
 499
 500         while (hwnd)
 501         {
 502             if (!(wndPtr = WIN_GetPtr( hwnd )))
 503             {
 504                 ERR( "bad hwndTo = %p\n", hwnd );
 505                 return;
 506             }
 507             if (wndPtr == WND_DESKTOP) break;
 508             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 509             offset->x -= wndPtr->rectClient.left;
 510             offset->y -= wndPtr->rectClient.top;
 511             hwnd = wndPtr->parent;
 512             WIN_ReleasePtr( wndPtr );
 513         }
 514     }
 515     return;
 516
 517  other_process:  /* one of the parents may belong to another process, do it the hard way */
 518     offset->x = offset->y = 0;
 519     SERVER_START_REQ( get_windows_offset )
 520     {
 521         req->from = hwndFrom;
 522         req->to   = hwndTo;
 523         if (!wine_server_call( req ))
 524         {
 525             offset->x = reply->x;
 526             offset->y = reply->y;
 527         }
 528     }
 529     SERVER_END_REQ;
 530 }
 531
 532
 533 /*******************************************************************
 534  *              MapWindowPoints (USER.258)
 535  */
 536 void WINAPI MapWindowPoints16( HWND16 hwndFrom, HWND16 hwndTo,
 537                                LPPOINT16 lppt, UINT16 count )
 538 {
 539     POINT offset;
 540
 541     WINPOS_GetWinOffset( WIN_Handle32(hwndFrom), WIN_Handle32(hwndTo), &offset );
 542     while (count--)
 543     {
 544         lppt->x += offset.x;
 545         lppt->y += offset.y;
 546         lppt++;
 547     }
 548 }
 549
 550
 551 /*******************************************************************
 552  *              MapWindowPoints (USER32.@)
 553  */
 554 INT WINAPI MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, UINT count )
 555 {
 556     POINT offset;
 557
 558     WINPOS_GetWinOffset( hwndFrom, hwndTo, &offset );
 559     while (count--)
 560     {
 561         lppt->x += offset.x;
 562         lppt->y += offset.y;
 563         lppt++;
 564     }
 565     return MAKELONG( LOWORD(offset.x), LOWORD(offset.y) );
 566 }
 567
 568
 569 /***********************************************************************
 570  *              IsIconic (USER32.@)
 571  */
 572 BOOL WINAPI IsIconic(HWND hWnd)
 573 {
 574     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MINIMIZE) != 0;
 575 }
 576
 577
 578 /***********************************************************************
 579  *              IsZoomed (USER32.@)
 580  */
 581 BOOL WINAPI IsZoomed(HWND hWnd)
 582 {
 583     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MAXIMIZE) != 0;
 584 }
 585
 586
 587 /*******************************************************************
 588  *              AllowSetForegroundWindow (USER32.@)
 589  */
 590 BOOL WINAPI AllowSetForegroundWindow( DWORD procid )
 591 {
 592     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 593      * implemented, then fix this function. */
 594     return TRUE;
 595 }
 596
 597
 598 /*******************************************************************
 599  *              LockSetForegroundWindow (USER32.@)
 600  */
 601 BOOL WINAPI LockSetForegroundWindow( UINT lockcode )
 602 {
 603     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 604      * implemented, then fix this function. */
 605     return TRUE;
 606 }
 607
 608
 609 /***********************************************************************
 610  *              BringWindowToTop (USER32.@)
 611  */
 612 BOOL WINAPI BringWindowToTop( HWND hwnd )
 613 {
 614     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE );
 615 }
 616
 617
 618 /***********************************************************************
 619  *              MoveWindow (USER32.@)
 620  */
 621 BOOL WINAPI MoveWindow( HWND hwnd, INT x, INT y, INT cx, INT cy,
 622                             BOOL repaint )
 623 {
 624     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 625     if (!repaint) flags |= SWP_NOREDRAW;
 626     TRACE("%p %d,%d %dx%d %d\n", hwnd, x, y, cx, cy, repaint );
 627     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 628 }
 629
 630 /***********************************************************************
 631  *           WINPOS_InitInternalPos
 632  */
 633 static LPINTERNALPOS WINPOS_InitInternalPos( WND* wnd )
 634 {
 635     LPINTERNALPOS lpPos = get_internal_pos( wnd->hwndSelf );
 636     if( !lpPos )
 637     {
 638         /* this happens when the window is minimized/maximized
 639          * for the first time (rectWindow is not adjusted yet) */
 640
 641         lpPos = HeapAlloc( GetProcessHeap(), 0, sizeof(INTERNALPOS) );
 642         if( !lpPos ) return NULL;
 643
 644         set_internal_pos( wnd->hwndSelf, lpPos );
 645         lpPos->hwndIconTitle = 0; /* defer until needs to be shown */
 646         lpPos->rectNormal.left   = wnd->rectWindow.left;
 647         lpPos->rectNormal.top    = wnd->rectWindow.top;
 648         lpPos->rectNormal.right  = wnd->rectWindow.right;
 649         lpPos->rectNormal.bottom = wnd->rectWindow.bottom;
 650         lpPos->ptIconPos.x = lpPos->ptIconPos.y = -1;
 651         lpPos->ptMaxPos.x = lpPos->ptMaxPos.y = -1;
 652     }
 653
 654     if( wnd->dwStyle & WS_MINIMIZE )
 655     {
 656         lpPos->ptIconPos.x = wnd->rectWindow.left;
 657         lpPos->ptIconPos.y = wnd->rectWindow.top;
 658     }
 659     else if( wnd->dwStyle & WS_MAXIMIZE )
 660     {
 661         lpPos->ptMaxPos.x = wnd->rectWindow.left;
 662         lpPos->ptMaxPos.y = wnd->rectWindow.top;
 663     }
 664     else
 665     {
 666         lpPos->rectNormal.left   = wnd->rectWindow.left;
 667         lpPos->rectNormal.top    = wnd->rectWindow.top;
 668         lpPos->rectNormal.right  = wnd->rectWindow.right;
 669         lpPos->rectNormal.bottom = wnd->rectWindow.bottom;
 670     }
 671     return lpPos;
 672 }
 673
 674 /***********************************************************************
 675  *           WINPOS_RedrawIconTitle
 676  */
 677 BOOL WINPOS_RedrawIconTitle( HWND hWnd )
 678 {
 679     LPINTERNALPOS lpPos = get_internal_pos( hWnd );
 680     if( lpPos )
 681     {
 682         if( lpPos->hwndIconTitle )
 683         {
 684             SendMessageW( lpPos->hwndIconTitle, WM_SHOWWINDOW, TRUE, 0);
 685             InvalidateRect( lpPos->hwndIconTitle, NULL, TRUE );
 686             return TRUE;
 687         }
 688     }
 689     return FALSE;
 690 }
 691
 692 /***********************************************************************
 693  *           WINPOS_ShowIconTitle
 694  */
 695 BOOL WINPOS_ShowIconTitle( HWND hwnd, BOOL bShow )
 696 {
 697     LPINTERNALPOS lpPos = get_internal_pos( hwnd );
 698
 699     if (lpPos && !GetPropA( hwnd, "__wine_x11_managed" ))
 700     {
 701         HWND title = lpPos->hwndIconTitle;
 702
 703         TRACE("%p %i\n", hwnd, (bShow != 0) );
 704
 705         if( !title )
 706             lpPos->hwndIconTitle = title = ICONTITLE_Create( hwnd );
 707         if( bShow )
 708         {
 709             if (!IsWindowVisible(title))
 710             {
 711                 SendMessageW( title, WM_SHOWWINDOW, TRUE, 0 );
 712                 SetWindowPos( title, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
 713                               SWP_NOACTIVATE | SWP_NOZORDER | SWP_SHOWWINDOW );
 714             }
 715         }
 716         else ShowWindow( title, SW_HIDE );
 717     }
 718     return FALSE;
 719 }
 720
 721 /*******************************************************************
 722  *           WINPOS_GetMinMaxInfo
 723  *
 724  * Get the minimized and maximized information for a window.
 725  */
 726 void WINPOS_GetMinMaxInfo( HWND hwnd, POINT *maxSize, POINT *maxPos,
 727                            POINT *minTrack, POINT *maxTrack )
 728 {
 729     LPINTERNALPOS lpPos;
 730     MINMAXINFO MinMax;
 731     INT xinc, yinc;
 732     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
 733     LONG exstyle = GetWindowLongA( hwnd, GWL_EXSTYLE );
 734     RECT rc;
 735
 736     /* Compute default values */
 737
 738     GetWindowRect(hwnd, &rc);
 739     MinMax.ptReserved.x = rc.left;
 740     MinMax.ptReserved.y = rc.top;
 741
 742     if (style & WS_CHILD)
 743     {
 744         if ((style & WS_CAPTION) == WS_CAPTION)
 745             style &= ~WS_BORDER; /* WS_CAPTION = WS_DLGFRAME | WS_BORDER */
 746
 747         GetClientRect(GetAncestor(hwnd,GA_PARENT), &rc);
 748         AdjustWindowRectEx(&rc, style, ((style & WS_POPUP) && GetMenu(hwnd)), exstyle);
 749
 750         /* avoid calculating this twice */
 751         style &= ~(WS_DLGFRAME | WS_BORDER | WS_THICKFRAME);
 752
 753         MinMax.ptMaxSize.x = rc.right - rc.left;
 754         MinMax.ptMaxSize.y = rc.bottom - rc.top;
 755     }
 756     else
 757     {
 758         MinMax.ptMaxSize.x = GetSystemMetrics(SM_CXSCREEN);
 759         MinMax.ptMaxSize.y = GetSystemMetrics(SM_CYSCREEN);
 760     }
 761     MinMax.ptMinTrackSize.x = GetSystemMetrics(SM_CXMINTRACK);
 762     MinMax.ptMinTrackSize.y = GetSystemMetrics(SM_CYMINTRACK);
 763     MinMax.ptMaxTrackSize.x = GetSystemMetrics(SM_CXSCREEN) + 2*GetSystemMetrics(SM_CXFRAME);
 764     MinMax.ptMaxTrackSize.y = GetSystemMetrics(SM_CYSCREEN) + 2*GetSystemMetrics(SM_CYFRAME);
 765
 766     if (HAS_DLGFRAME( style, exstyle ))
 767     {
 768         xinc = GetSystemMetrics(SM_CXDLGFRAME);
 769         yinc = GetSystemMetrics(SM_CYDLGFRAME);
 770     }
 771     else
 772     {
 773         xinc = yinc = 0;
 774         if (HAS_THICKFRAME(style))
 775         {
 776             xinc += GetSystemMetrics(SM_CXFRAME);
 777             yinc += GetSystemMetrics(SM_CYFRAME);
 778         }
 779         if (style & WS_BORDER)
 780         {
 781             xinc += GetSystemMetrics(SM_CXBORDER);
 782             yinc += GetSystemMetrics(SM_CYBORDER);
 783         }
 784     }
 785     MinMax.ptMaxSize.x += 2 * xinc;
 786     MinMax.ptMaxSize.y += 2 * yinc;
 787
 788     lpPos = get_internal_pos( hwnd );
 789     if( lpPos && !EMPTYPOINT(lpPos->ptMaxPos) )
 790     {
 791         MinMax.ptMaxPosition.x = lpPos->ptMaxPos.x;
 792         MinMax.ptMaxPosition.y = lpPos->ptMaxPos.y;
 793     }
 794     else
 795     {
 796         MinMax.ptMaxPosition.x = -xinc;
 797         MinMax.ptMaxPosition.y = -yinc;
 798     }
 799
 800     SendMessageW( hwnd, WM_GETMINMAXINFO, 0, (LPARAM)&MinMax );
 801
 802       /* Some sanity checks */
 803
 804     TRACE("%ld %ld / %ld %ld / %ld %ld / %ld %ld\n",
 805                       MinMax.ptMaxSize.x, MinMax.ptMaxSize.y,
 806                       MinMax.ptMaxPosition.x, MinMax.ptMaxPosition.y,
 807                       MinMax.ptMaxTrackSize.x, MinMax.ptMaxTrackSize.y,
 808                       MinMax.ptMinTrackSize.x, MinMax.ptMinTrackSize.y);
 809     MinMax.ptMaxTrackSize.x = max( MinMax.ptMaxTrackSize.x,
 810                                    MinMax.ptMinTrackSize.x );
 811     MinMax.ptMaxTrackSize.y = max( MinMax.ptMaxTrackSize.y,
 812                                    MinMax.ptMinTrackSize.y );
 813
 814     if (maxSize) *maxSize = MinMax.ptMaxSize;
 815     if (maxPos) *maxPos = MinMax.ptMaxPosition;
 816     if (minTrack) *minTrack = MinMax.ptMinTrackSize;
 817     if (maxTrack) *maxTrack = MinMax.ptMaxTrackSize;
 818 }
 819
 820 /***********************************************************************
 821  *              ShowWindowAsync (USER32.@)
 822  *
 823  * doesn't wait; returns immediately.
 824  * used by threads to toggle windows in other (possibly hanging) threads
 825  */
 826 BOOL WINAPI ShowWindowAsync( HWND hwnd, INT cmd )
 827 {
 828     HWND full_handle;
 829
 830     if (is_broadcast(hwnd))
 831     {
 832         SetLastError( ERROR_INVALID_PARAMETER );
 833         return FALSE;
 834     }
 835
 836     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 837         return USER_Driver->pShowWindow( full_handle, cmd );
 838
 839     return SendNotifyMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 840 }
 841
 842
 843 /***********************************************************************
 844  *              ShowWindow (USER32.@)
 845  */
 846 BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
 847 {
 848     HWND full_handle;
 849
 850     if (is_broadcast(hwnd))
 851     {
 852         SetLastError( ERROR_INVALID_PARAMETER );
 853         return FALSE;
 854     }
 855     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 856         return USER_Driver->pShowWindow( full_handle, cmd );
 857
 858     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 859 }
 860
 861
 862 /***********************************************************************
 863  *              GetInternalWindowPos (USER32.@)
 864  */
 865 UINT WINAPI GetInternalWindowPos( HWND hwnd, LPRECT rectWnd,
 866                                       LPPOINT ptIcon )
 867 {
 868     WINDOWPLACEMENT wndpl;
 869     if (GetWindowPlacement( hwnd, &wndpl ))
 870     {
 871         if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 872         if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 873         return wndpl.showCmd;
 874     }
 875     return 0;
 876 }
 877
 878
 879 /***********************************************************************
 880  *              GetWindowPlacement (USER32.@)
 881  *
 882  * Win95:
 883  * Fails if wndpl->length of Win95 (!) apps is invalid.
 884  */
 885 BOOL WINAPI GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 886 {
 887     WND *pWnd = WIN_GetPtr( hwnd );
 888     LPINTERNALPOS lpPos;
 889
 890     if (!pWnd || pWnd == WND_DESKTOP) return FALSE;
 891     if (pWnd == WND_OTHER_PROCESS)
 892     {
 893         if (IsWindow( hwnd )) FIXME( "not supported on other process window %p\n", hwnd );
 894         return FALSE;
 895     }
 896
 897     lpPos = WINPOS_InitInternalPos( pWnd );
 898     wndpl->length  = sizeof(*wndpl);
 899     if( pWnd->dwStyle & WS_MINIMIZE )
 900         wndpl->showCmd = SW_SHOWMINIMIZED;
 901     else
 902         wndpl->showCmd = ( pWnd->dwStyle & WS_MAXIMIZE ) ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL ;
 903     if( pWnd->flags & WIN_RESTORE_MAX )
 904         wndpl->flags = WPF_RESTORETOMAXIMIZED;
 905     else
 906         wndpl->flags = 0;
 907     wndpl->ptMinPosition.x = lpPos->ptIconPos.x;
 908     wndpl->ptMinPosition.y = lpPos->ptIconPos.y;
 909     wndpl->ptMaxPosition.x = lpPos->ptMaxPos.x;
 910     wndpl->ptMaxPosition.y = lpPos->ptMaxPos.y;
 911     wndpl->rcNormalPosition.left   = lpPos->rectNormal.left;
 912     wndpl->rcNormalPosition.top    = lpPos->rectNormal.top;
 913     wndpl->rcNormalPosition.right  = lpPos->rectNormal.right;
 914     wndpl->rcNormalPosition.bottom = lpPos->rectNormal.bottom;
 915     WIN_ReleasePtr( pWnd );
 916     return TRUE;
 917 }
 918
 919
 920 /***********************************************************************
 921  *           WINPOS_SetPlacement
 922  */
 923 static BOOL WINPOS_SetPlacement( HWND hwnd, const WINDOWPLACEMENT *wndpl, UINT flags )
 924 {
 925     LPINTERNALPOS lpPos;
 926     DWORD style;
 927     WND *pWnd = WIN_GetPtr( hwnd );
 928
 929     if (!pWnd || pWnd == WND_OTHER_PROCESS || pWnd == WND_DESKTOP) return FALSE;
 930     lpPos = WINPOS_InitInternalPos( pWnd );
 931
 932     if( flags & PLACE_MIN )
 933     {
 934         lpPos->ptIconPos.x = wndpl->ptMinPosition.x;
 935         lpPos->ptIconPos.y = wndpl->ptMinPosition.y;
 936     }
 937     if( flags & PLACE_MAX )
 938     {
 939         lpPos->ptMaxPos.x = wndpl->ptMaxPosition.x;
 940         lpPos->ptMaxPos.y = wndpl->ptMaxPosition.y;
 941     }
 942     if( flags & PLACE_RECT)
 943     {
 944         lpPos->rectNormal.left   = wndpl->rcNormalPosition.left;
 945         lpPos->rectNormal.top    = wndpl->rcNormalPosition.top;
 946         lpPos->rectNormal.right  = wndpl->rcNormalPosition.right;
 947         lpPos->rectNormal.bottom = wndpl->rcNormalPosition.bottom;
 948     }
 949
 950     style = pWnd->dwStyle;
 951     WIN_ReleasePtr( pWnd );
 952
 953     if( style & WS_MINIMIZE )
 954     {
 955         WINPOS_ShowIconTitle( hwnd, FALSE );
 956         if( wndpl->flags & WPF_SETMINPOSITION && !EMPTYPOINT(lpPos->ptIconPos))
 957             SetWindowPos( hwnd, 0, lpPos->ptIconPos.x, lpPos->ptIconPos.y,
 958                           0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 959     }
 960     else if( style & WS_MAXIMIZE )
 961     {
 962         if( !EMPTYPOINT(lpPos->ptMaxPos) )
 963             SetWindowPos( hwnd, 0, lpPos->ptMaxPos.x, lpPos->ptMaxPos.y,
 964                           0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 965     }
 966     else if( flags & PLACE_RECT )
 967         SetWindowPos( hwnd, 0, lpPos->rectNormal.left, lpPos->rectNormal.top,
 968                       lpPos->rectNormal.right - lpPos->rectNormal.left,
 969                       lpPos->rectNormal.bottom - lpPos->rectNormal.top,
 970                       SWP_NOZORDER | SWP_NOACTIVATE );
 971
 972     ShowWindow( hwnd, wndpl->showCmd );
 973
 974     if (IsIconic( hwnd ))
 975     {
 976         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE) WINPOS_ShowIconTitle( hwnd, TRUE );
 977
 978         /* SDK: ...valid only the next time... */
 979         if( wndpl->flags & WPF_RESTORETOMAXIMIZED )
 980         {
 981             pWnd = WIN_GetPtr( hwnd );
 982             if (pWnd && pWnd != WND_OTHER_PROCESS)
 983             {
 984                 pWnd->flags |= WIN_RESTORE_MAX;
 985                 WIN_ReleasePtr( pWnd );
 986             }
 987         }
 988     }
 989     return TRUE;
 990 }
 991
 992
 993 /***********************************************************************
 994  *              SetWindowPlacement (USER32.@)
 995  *
 996  * Win95:
 997  * Fails if wndpl->length of Win95 (!) apps is invalid.
 998  */
 999 BOOL WINAPI SetWindowPlacement( HWND hwnd, const WINDOWPLACEMENT *wpl )
1000 {
1001     if (!wpl) return FALSE;
1002     return WINPOS_SetPlacement( hwnd, wpl, PLACE_MIN | PLACE_MAX | PLACE_RECT );
1003 }
1004
1005
1006 /***********************************************************************
1007  *              AnimateWindow (USER32.@)
1008  *              Shows/Hides a window with an animation
1009  *              NO ANIMATION YET
1010  */
1011 BOOL WINAPI AnimateWindow(HWND hwnd, DWORD dwTime, DWORD dwFlags)
1012 {
1013         FIXME("partial stub\n");
1014
1015         /* If trying to show/hide and it's already   *
1016          * shown/hidden or invalid window, fail with *
1017          * invalid parameter                         */
1018         if(!IsWindow(hwnd) ||
1019            (IsWindowVisible(hwnd) && !(dwFlags & AW_HIDE)) ||
1020            (!IsWindowVisible(hwnd) && (dwFlags & AW_HIDE)))
1021         {
1022                 SetLastError(ERROR_INVALID_PARAMETER);
1023                 return FALSE;
1024         }
1025
1026         ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
1027
1028         return TRUE;
1029 }
1030
1031 /***********************************************************************
1032  *              SetInternalWindowPos (USER32.@)
1033  */
1034 void WINAPI SetInternalWindowPos( HWND hwnd, UINT showCmd,
1035                                     LPRECT rect, LPPOINT pt )
1036 {
1037     if( IsWindow(hwnd) )
1038     {
1039         WINDOWPLACEMENT wndpl;
1040         UINT flags;
1041
1042         wndpl.length  = sizeof(wndpl);
1043         wndpl.showCmd = showCmd;
1044         wndpl.flags = flags = 0;
1045
1046         if( pt )
1047         {
1048             flags |= PLACE_MIN;
1049             wndpl.flags |= WPF_SETMINPOSITION;
1050             wndpl.ptMinPosition = *pt;
1051         }
1052         if( rect )
1053         {
1054             flags |= PLACE_RECT;
1055             wndpl.rcNormalPosition = *rect;
1056         }
1057         WINPOS_SetPlacement( hwnd, &wndpl, flags );
1058     }
1059 }
1060
1061
1062 /*******************************************************************
1063  *         can_activate_window
1064  *
1065  * Check if we can activate the specified window.
1066  */
1067 static BOOL can_activate_window( HWND hwnd )
1068 {
1069     LONG style;
1070
1071     if (!hwnd) return FALSE;
1072     style = GetWindowLongW( hwnd, GWL_STYLE );
1073     if (!(style & WS_VISIBLE)) return FALSE;
1074     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
1075     return !(style & WS_DISABLED);
1076 }
1077
1078
1079 /*******************************************************************
1080  *         WINPOS_ActivateOtherWindow
1081  *
1082  *  Activates window other than pWnd.
1083  */
1084 void WINPOS_ActivateOtherWindow(HWND hwnd)
1085 {
1086     HWND hwndTo, fg;
1087
1088     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
1089     {
1090         hwndTo = GetAncestor( hwndTo, GA_ROOT );
1091         if (can_activate_window( hwndTo )) goto done;
1092     }
1093
1094     hwndTo = hwnd;
1095     for (;;)
1096     {
1097         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
1098         if (can_activate_window( hwndTo )) break;
1099     }
1100
1101  done:
1102     fg = GetForegroundWindow();
1103     TRACE("win = %p fg = %p\n", hwndTo, fg);
1104     if (!fg || (hwnd == fg))
1105     {
1106         if (SetForegroundWindow( hwndTo )) return;
1107     }
1108     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
1109 }
1110
1111
1112 /***********************************************************************
1113  *           WINPOS_HandleWindowPosChanging
1114  *
1115  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1116  */
1117 LONG WINPOS_HandleWindowPosChanging( HWND hwnd, WINDOWPOS *winpos )
1118 {
1119     POINT minTrack, maxTrack;
1120     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1121
1122     if (winpos->flags & SWP_NOSIZE) return 0;
1123     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1124     {
1125         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1126         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1127         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1128         if (!(style & WS_MINIMIZE))
1129         {
1130             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1131             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1132         }
1133     }
1134     return 0;
1135 }
1136
1137
1138 /***********************************************************************
1139  *           dump_winpos_flags
1140  */
1141 static void dump_winpos_flags(UINT flags)
1142 {
1143     TRACE("flags:");
1144     if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
1145     if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
1146     if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
1147     if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
1148     if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
1149     if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
1150     if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
1151     if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
1152     if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
1153     if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
1154     if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
1155     if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
1156     if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
1157
1158 #define DUMPED_FLAGS \
1159     (SWP_NOSIZE | \
1160     SWP_NOMOVE | \
1161     SWP_NOZORDER | \
1162     SWP_NOREDRAW | \
1163     SWP_NOACTIVATE | \
1164     SWP_FRAMECHANGED | \
1165     SWP_SHOWWINDOW | \
1166     SWP_HIDEWINDOW | \
1167     SWP_NOCOPYBITS | \
1168     SWP_NOOWNERZORDER | \
1169     SWP_NOSENDCHANGING | \
1170     SWP_DEFERERASE | \
1171     SWP_ASYNCWINDOWPOS)
1172
1173     if(flags & ~DUMPED_FLAGS) TRACE(" %08x", flags & ~DUMPED_FLAGS);
1174     TRACE("\n");
1175 #undef DUMPED_FLAGS
1176 }
1177
1178 /***********************************************************************
1179  *              SetWindowPos (USER32.@)
1180  */
1181 BOOL WINAPI SetWindowPos( HWND hwnd, HWND hwndInsertAfter,
1182                           INT x, INT y, INT cx, INT cy, UINT flags )
1183 {
1184     WINDOWPOS winpos;
1185
1186     TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1187           hwnd, hwndInsertAfter, x, y, cx, cy, flags);
1188     if(TRACE_ON(win)) dump_winpos_flags(flags);
1189
1190     if (is_broadcast(hwnd))
1191     {
1192         SetLastError( ERROR_INVALID_PARAMETER );
1193         return FALSE;
1194     }
1195
1196     winpos.hwnd = WIN_GetFullHandle(hwnd);
1197     winpos.hwndInsertAfter = WIN_GetFullHandle(hwndInsertAfter);
1198     winpos.x = x;
1199     winpos.y = y;
1200     winpos.cx = cx;
1201     winpos.cy = cy;
1202     winpos.flags = flags;
1203     if (WIN_IsCurrentThread( hwnd ))
1204         return USER_Driver->pSetWindowPos( &winpos );
1205
1206     return SendMessageW( winpos.hwnd, WM_WINE_SETWINDOWPOS, 0, (LPARAM)&winpos );
1207 }
1208
1209
1210 /***********************************************************************
1211  *              BeginDeferWindowPos (USER32.@)
1212  */
1213 HDWP WINAPI BeginDeferWindowPos( INT count )
1214 {
1215     HDWP handle;
1216     DWP *pDWP;
1217
1218     TRACE("%d\n", count);
1219
1220     if (count < 0)
1221     {
1222         SetLastError(ERROR_INVALID_PARAMETER);
1223         return 0;
1224     }
1225     /* Windows allows zero count, in which case it allocates context for 8 moves */
1226     if (count == 0) count = 8;
1227
1228     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1229     if (!handle) return 0;
1230     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1231     pDWP->actualCount    = 0;
1232     pDWP->suggestedCount = count;
1233     pDWP->valid          = TRUE;
1234     pDWP->wMagic         = DWP_MAGIC;
1235     pDWP->hwndParent     = 0;
1236
1237     TRACE("returning hdwp %p\n", handle);
1238     return handle;
1239 }
1240
1241
1242 /***********************************************************************
1243  *              DeferWindowPos (USER32.@)
1244  */
1245 HDWP WINAPI DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter,
1246                                 INT x, INT y, INT cx, INT cy,
1247                                 UINT flags )
1248 {
1249     DWP *pDWP;
1250     int i;
1251     HDWP newhdwp = hdwp,retvalue;
1252
1253     TRACE("hdwp %p, hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1254           hdwp, hwnd, hwndAfter, x, y, cx, cy, flags);
1255
1256     hwnd = WIN_GetFullHandle( hwnd );
1257     if (hwnd == GetDesktopWindow()) return 0;
1258
1259     if (!(pDWP = USER_HEAP_LIN_ADDR( hdwp ))) return 0;
1260
1261     USER_Lock();
1262
1263     for (i = 0; i < pDWP->actualCount; i++)
1264     {
1265         if (pDWP->winPos[i].hwnd == hwnd)
1266         {
1267               /* Merge with the other changes */
1268             if (!(flags & SWP_NOZORDER))
1269             {
1270                 pDWP->winPos[i].hwndInsertAfter = WIN_GetFullHandle(hwndAfter);
1271             }
1272             if (!(flags & SWP_NOMOVE))
1273             {
1274                 pDWP->winPos[i].x = x;
1275                 pDWP->winPos[i].y = y;
1276             }
1277             if (!(flags & SWP_NOSIZE))
1278             {
1279                 pDWP->winPos[i].cx = cx;
1280                 pDWP->winPos[i].cy = cy;
1281             }
1282             pDWP->winPos[i].flags &= flags | ~(SWP_NOSIZE | SWP_NOMOVE |
1283                                                SWP_NOZORDER | SWP_NOREDRAW |
1284                                                SWP_NOACTIVATE | SWP_NOCOPYBITS|
1285                                                SWP_NOOWNERZORDER);
1286             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1287                                               SWP_FRAMECHANGED);
1288             retvalue = hdwp;
1289             goto END;
1290         }
1291     }
1292     if (pDWP->actualCount >= pDWP->suggestedCount)
1293     {
1294         newhdwp = USER_HEAP_REALLOC( hdwp,
1295                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1296         if (!newhdwp)
1297         {
1298             retvalue = 0;
1299             goto END;
1300         }
1301         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1302         pDWP->suggestedCount++;
1303     }
1304     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1305     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1306     pDWP->winPos[pDWP->actualCount].x = x;
1307     pDWP->winPos[pDWP->actualCount].y = y;
1308     pDWP->winPos[pDWP->actualCount].cx = cx;
1309     pDWP->winPos[pDWP->actualCount].cy = cy;
1310     pDWP->winPos[pDWP->actualCount].flags = flags;
1311     pDWP->actualCount++;
1312     retvalue = newhdwp;
1313 END:
1314     USER_Unlock();
1315     return retvalue;
1316 }
1317
1318
1319 /***********************************************************************
1320  *              EndDeferWindowPos (USER32.@)
1321  */
1322 BOOL WINAPI EndDeferWindowPos( HDWP hdwp )
1323 {
1324     DWP *pDWP;
1325     WINDOWPOS *winpos;
1326     BOOL res = TRUE;
1327     int i;
1328
1329     TRACE("%p\n", hdwp);
1330
1331     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1332     if (!pDWP) return FALSE;
1333     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1334     {
1335         if (!(res = USER_Driver->pSetWindowPos( winpos ))) break;
1336     }
1337     USER_HEAP_FREE( hdwp );
1338     return res;
1339 }
1340
1341
1342 /***********************************************************************
1343  *              TileChildWindows (USER.199)
1344  */
1345 void WINAPI TileChildWindows16( HWND16 parent, WORD action )
1346 {
1347     FIXME("(%04x, %d): stub\n", parent, action);
1348 }
1349
1350 /***********************************************************************
1351  *              CascadeChildWindows (USER.198)
1352  */
1353 void WINAPI CascadeChildWindows16( HWND16 parent, WORD action )
1354 {
1355     FIXME("(%04x, %d): stub\n", parent, action);
1356 }