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 "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 variables ----- */
  80
  81 static LPCSTR atomInternalPos;
  82
  83
  84 /***********************************************************************
  85  *           WINPOS_CreateInternalPosAtom
  86  */
  87 BOOL WINPOS_CreateInternalPosAtom()
  88 {
  89     LPCSTR str = "SysIP";
  90     atomInternalPos = (LPCSTR)(DWORD)GlobalAddAtomA(str);
  91     return (atomInternalPos) ? TRUE : FALSE;
  92 }
  93
  94 /***********************************************************************
  95  *           WINPOS_CheckInternalPos
  96  *
  97  * Called when a window is destroyed.
  98  */
  99 void WINPOS_CheckInternalPos( HWND hwnd )
 100 {
 101     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( hwnd, atomInternalPos );
 102
 103     if( lpPos )
 104     {
 105         if( IsWindow(lpPos->hwndIconTitle) )
 106             DestroyWindow( lpPos->hwndIconTitle );
 107         HeapFree( GetProcessHeap(), 0, lpPos );
 108     }
 109 }
 110
 111 /***********************************************************************
 112  *              ArrangeIconicWindows (USER32.@)
 113  */
 114 UINT WINAPI ArrangeIconicWindows( HWND parent )
 115 {
 116     RECT rectParent;
 117     HWND hwndChild;
 118     INT x, y, xspacing, yspacing;
 119
 120     GetClientRect( parent, &rectParent );
 121     x = rectParent.left;
 122     y = rectParent.bottom;
 123     xspacing = GetSystemMetrics(SM_CXICONSPACING);
 124     yspacing = GetSystemMetrics(SM_CYICONSPACING);
 125
 126     hwndChild = GetWindow( parent, GW_CHILD );
 127     while (hwndChild)
 128     {
 129         if( IsIconic( hwndChild ) )
 130         {
 131             WINPOS_ShowIconTitle( hwndChild, FALSE );
 132
 133             SetWindowPos( hwndChild, 0, x + (xspacing - GetSystemMetrics(SM_CXICON)) / 2,
 134                             y - yspacing - GetSystemMetrics(SM_CYICON)/2, 0, 0,
 135                             SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 136             if( IsWindow(hwndChild) )
 137                 WINPOS_ShowIconTitle(hwndChild , TRUE );
 138
 139             if (x <= rectParent.right - xspacing) x += xspacing;
 140             else
 141             {
 142                 x = rectParent.left;
 143                 y -= yspacing;
 144             }
 145         }
 146         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 147     }
 148     return yspacing;
 149 }
 150
 151
 152 /***********************************************************************
 153  *              SwitchToThisWindow (USER32.@)
 154  */
 155 void WINAPI SwitchToThisWindow( HWND hwnd, BOOL restore )
 156 {
 157     ShowWindow( hwnd, restore ? SW_RESTORE : SW_SHOWMINIMIZED );
 158 }
 159
 160
 161 /***********************************************************************
 162  *              GetWindowRect (USER32.@)
 163  */
 164 BOOL WINAPI GetWindowRect( HWND hwnd, LPRECT rect )
 165 {
 166     BOOL ret = WIN_GetRectangles( hwnd, rect, NULL );
 167     if (ret)
 168     {
 169         MapWindowPoints( GetAncestor( hwnd, GA_PARENT ), 0, (POINT *)rect, 2 );
 170         TRACE( "hwnd %p (%ld,%ld)-(%ld,%ld)\n",
 171                hwnd, rect->left, rect->top, rect->right, rect->bottom);
 172     }
 173     return ret;
 174 }
 175
 176
 177 /***********************************************************************
 178  *              GetWindowRgn (USER32.@)
 179  */
 180 int WINAPI GetWindowRgn ( HWND hwnd, HRGN hrgn )
 181 {
 182     int nRet = ERROR;
 183     NTSTATUS status;
 184     HRGN win_rgn = 0;
 185     RGNDATA *data;
 186     size_t size = 256;
 187
 188     do
 189     {
 190         if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
 191         {
 192             SetLastError( ERROR_OUTOFMEMORY );
 193             return ERROR;
 194         }
 195         SERVER_START_REQ( get_window_region )
 196         {
 197             req->window = hwnd;
 198             wine_server_set_reply( req, data->Buffer, size );
 199             if (!(status = wine_server_call( req )))
 200             {
 201                 size_t reply_size = wine_server_reply_size( reply );
 202                 if (reply_size)
 203                 {
 204                     data->rdh.dwSize   = sizeof(data->rdh);
 205                     data->rdh.iType    = RDH_RECTANGLES;
 206                     data->rdh.nCount   = reply_size / sizeof(RECT);
 207                     data->rdh.nRgnSize = reply_size;
 208                     win_rgn = ExtCreateRegion( NULL, size, data );
 209                 }
 210             }
 211             else size = reply->total_size;
 212         }
 213         SERVER_END_REQ;
 214         HeapFree( GetProcessHeap(), 0, data );
 215     } while (status == STATUS_BUFFER_OVERFLOW);
 216
 217     if (status) SetLastError( RtlNtStatusToDosError(status) );
 218     else if (win_rgn)
 219     {
 220         nRet = CombineRgn( hrgn, win_rgn, 0, RGN_COPY );
 221         DeleteObject( win_rgn );
 222     }
 223     return nRet;
 224 }
 225
 226
 227 /***********************************************************************
 228  *              SetWindowRgn (USER32.@)
 229  */
 230 int WINAPI SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL bRedraw )
 231 {
 232     static const RECT empty_rect;
 233     BOOL ret;
 234
 235     if (hrgn)
 236     {
 237         RGNDATA *data;
 238         DWORD size;
 239
 240         if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
 241         if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 242         if (!GetRegionData( hrgn, size, data ))
 243         {
 244             HeapFree( GetProcessHeap(), 0, data );
 245             return FALSE;
 246         }
 247         SERVER_START_REQ( set_window_region )
 248         {
 249             req->window = hwnd;
 250             if (data->rdh.nCount)
 251                 wine_server_add_data( req, data->Buffer, data->rdh.nCount * sizeof(RECT) );
 252             else
 253                 wine_server_add_data( req, &empty_rect, sizeof(empty_rect) );
 254             ret = !wine_server_call_err( req );
 255         }
 256         SERVER_END_REQ;
 257     }
 258     else  /* clear existing region */
 259     {
 260         SERVER_START_REQ( set_window_region )
 261         {
 262             req->window = hwnd;
 263             ret = !wine_server_call_err( req );
 264         }
 265         SERVER_END_REQ;
 266     }
 267
 268     if (ret && USER_Driver.pSetWindowRgn)
 269         ret = USER_Driver.pSetWindowRgn( hwnd, hrgn, bRedraw );
 270
 271     if (ret && bRedraw) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_INVALIDATE | RDW_ERASE );
 272     return ret;
 273 }
 274
 275
 276 /***********************************************************************
 277  *              GetClientRect (USER32.@)
 278  */
 279 BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
 280 {
 281     BOOL ret;
 282
 283     if ((ret = WIN_GetRectangles( hwnd, NULL, rect )))
 284     {
 285         rect->right -= rect->left;
 286         rect->bottom -= rect->top;
 287         rect->left = rect->top = 0;
 288     }
 289     return ret;
 290 }
 291
 292
 293 /*******************************************************************
 294  *              ClientToScreen (USER32.@)
 295  */
 296 BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
 297 {
 298     MapWindowPoints( hwnd, 0, lppnt, 1 );
 299     return TRUE;
 300 }
 301
 302
 303 /*******************************************************************
 304  *              ScreenToClient (USER32.@)
 305  */
 306 BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
 307 {
 308     MapWindowPoints( 0, hwnd, lppnt, 1 );
 309     return TRUE;
 310 }
 311
 312
 313 /***********************************************************************
 314  *           list_children_from_point
 315  *
 316  * Get the list of children that can contain point from the server.
 317  * Point is in screen coordinates.
 318  * Returned list must be freed by caller.
 319  */
 320 static HWND *list_children_from_point( HWND hwnd, POINT pt )
 321 {
 322     HWND *list;
 323     int size = 32;
 324
 325     for (;;)
 326     {
 327         int count = 0;
 328
 329         if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) break;
 330
 331         SERVER_START_REQ( get_window_children_from_point )
 332         {
 333             req->parent = hwnd;
 334             req->x = pt.x;
 335             req->y = pt.y;
 336             wine_server_set_reply( req, list, (size-1) * sizeof(HWND) );
 337             if (!wine_server_call( req )) count = reply->count;
 338         }
 339         SERVER_END_REQ;
 340         if (count && count < size)
 341         {
 342             list[count] = 0;
 343             return list;
 344         }
 345         HeapFree( GetProcessHeap(), 0, list );
 346         if (!count) break;
 347         size = count + 1;  /* restart with a large enough buffer */
 348     }
 349     return NULL;
 350 }
 351
 352
 353 /***********************************************************************
 354  *           WINPOS_WindowFromPoint
 355  *
 356  * Find the window and hittest for a given point.
 357  */
 358 HWND WINPOS_WindowFromPoint( HWND hwndScope, POINT pt, INT *hittest )
 359 {
 360     int i, res;
 361     HWND ret, *list;
 362
 363     if (!hwndScope) hwndScope = GetDesktopWindow();
 364
 365     *hittest = HTNOWHERE;
 366
 367     if (!(list = list_children_from_point( hwndScope, pt ))) return 0;
 368
 369     /* now determine the hittest */
 370
 371     for (i = 0; list[i]; i++)
 372     {
 373         LONG style = GetWindowLongW( list[i], GWL_STYLE );
 374
 375         /* If window is minimized or disabled, return at once */
 376         if (style & WS_MINIMIZE)
 377         {
 378             *hittest = HTCAPTION;
 379             break;
 380         }
 381         if (style & WS_DISABLED)
 382         {
 383             *hittest = HTERROR;
 384             break;
 385         }
 386         /* Send WM_NCCHITTEST (if same thread) */
 387         if (!WIN_IsCurrentThread( list[i] ))
 388         {
 389             *hittest = HTCLIENT;
 390             break;
 391         }
 392         res = SendMessageA( list[i], WM_NCHITTEST, 0, MAKELONG(pt.x,pt.y) );
 393         if (res != HTTRANSPARENT)
 394         {
 395             *hittest = res;  /* Found the window */
 396             break;
 397         }
 398         /* continue search with next window in z-order */
 399     }
 400     ret = list[i];
 401     HeapFree( GetProcessHeap(), 0, list );
 402     TRACE( "scope %p (%ld,%ld) returning %p\n", hwndScope, pt.x, pt.y, ret );
 403     return ret;
 404 }
 405
 406
 407 /*******************************************************************
 408  *              WindowFromPoint (USER32.@)
 409  */
 410 HWND WINAPI WindowFromPoint( POINT pt )
 411 {
 412     INT hittest;
 413     return WINPOS_WindowFromPoint( 0, pt, &hittest );
 414 }
 415
 416
 417 /*******************************************************************
 418  *              ChildWindowFromPoint (USER32.@)
 419  */
 420 HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
 421 {
 422     return ChildWindowFromPointEx( hwndParent, pt, CWP_ALL );
 423 }
 424
 425 /*******************************************************************
 426  *              ChildWindowFromPointEx (USER32.@)
 427  */
 428 HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
 429 {
 430     /* pt is in the client coordinates */
 431     HWND *list;
 432     int i;
 433     RECT rect;
 434     HWND retvalue;
 435
 436     GetClientRect( hwndParent, &rect );
 437     if (!PtInRect( &rect, pt )) return 0;
 438     if (!(list = WIN_ListChildren( hwndParent ))) return 0;
 439
 440     for (i = 0; list[i]; i++)
 441     {
 442         if (!WIN_GetRectangles( list[i], &rect, NULL )) continue;
 443         if (!PtInRect( &rect, pt )) continue;
 444         if (uFlags & (CWP_SKIPINVISIBLE|CWP_SKIPDISABLED))
 445         {
 446             LONG style = GetWindowLongW( list[i], GWL_STYLE );
 447             if ((uFlags & CWP_SKIPINVISIBLE) && !(style & WS_VISIBLE)) continue;
 448             if ((uFlags & CWP_SKIPDISABLED) && (style & WS_DISABLED)) continue;
 449         }
 450         if (uFlags & CWP_SKIPTRANSPARENT)
 451         {
 452             if (GetWindowLongW( list[i], GWL_EXSTYLE ) & WS_EX_TRANSPARENT) continue;
 453         }
 454         break;
 455     }
 456     retvalue = list[i];
 457     HeapFree( GetProcessHeap(), 0, list );
 458     if (!retvalue) retvalue = hwndParent;
 459     return retvalue;
 460 }
 461
 462
 463 /*******************************************************************
 464  *         WINPOS_GetWinOffset
 465  *
 466  * Calculate the offset between the origin of the two windows. Used
 467  * to implement MapWindowPoints.
 468  */
 469 static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
 470 {
 471     WND * wndPtr;
 472
 473     offset->x = offset->y = 0;
 474
 475     /* Translate source window origin to screen coords */
 476     if (hwndFrom)
 477     {
 478         HWND hwnd = hwndFrom;
 479
 480         while (hwnd && hwnd != GetDesktopWindow())
 481         {
 482             if (hwnd == hwndTo) return;
 483             if (!(wndPtr = WIN_GetPtr( hwnd )))
 484             {
 485                 ERR( "bad hwndFrom = %p\n", hwnd );
 486                 return;
 487             }
 488             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 489             offset->x += wndPtr->rectClient.left;
 490             offset->y += wndPtr->rectClient.top;
 491             hwnd = wndPtr->parent;
 492             WIN_ReleasePtr( wndPtr );
 493         }
 494     }
 495
 496     /* Translate origin to destination window coords */
 497     if (hwndTo)
 498     {
 499         HWND hwnd = hwndTo;
 500
 501         while (hwnd && hwnd != GetDesktopWindow())
 502         {
 503             if (!(wndPtr = WIN_GetPtr( hwnd )))
 504             {
 505                 ERR( "bad hwndTo = %p\n", hwnd );
 506                 return;
 507             }
 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 = GetPropA( wnd->hwndSelf, atomInternalPos );
 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         SetPropA( wnd->hwndSelf, atomInternalPos, (HANDLE)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 = (LPINTERNALPOS)GetPropA( hWnd, atomInternalPos );
 680     if( lpPos )
 681     {
 682         if( lpPos->hwndIconTitle )
 683         {
 684             SendMessageA( 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 = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 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                 SendMessageA( 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(GetParent(hwnd), &rc);
 748         AdjustWindowRectEx(&rc, style, 0, 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 = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 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     SendMessageA( 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     {
 838         if (USER_Driver.pShowWindow)
 839             return USER_Driver.pShowWindow( full_handle, cmd );
 840         return FALSE;
 841     }
 842     return SendNotifyMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 843 }
 844
 845
 846 /***********************************************************************
 847  *              ShowWindow (USER32.@)
 848  */
 849 BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
 850 {
 851     HWND full_handle;
 852
 853     if (is_broadcast(hwnd))
 854     {
 855         SetLastError( ERROR_INVALID_PARAMETER );
 856         return FALSE;
 857     }
 858     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 859     {
 860         if (USER_Driver.pShowWindow)
 861             return USER_Driver.pShowWindow( full_handle, cmd );
 862         return FALSE;
 863     }
 864     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 865 }
 866
 867
 868 /***********************************************************************
 869  *              GetInternalWindowPos (USER32.@)
 870  */
 871 UINT WINAPI GetInternalWindowPos( HWND hwnd, LPRECT rectWnd,
 872                                       LPPOINT ptIcon )
 873 {
 874     WINDOWPLACEMENT wndpl;
 875     if (GetWindowPlacement( hwnd, &wndpl ))
 876     {
 877         if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 878         if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 879         return wndpl.showCmd;
 880     }
 881     return 0;
 882 }
 883
 884
 885 /***********************************************************************
 886  *              GetWindowPlacement (USER32.@)
 887  *
 888  * Win95:
 889  * Fails if wndpl->length of Win95 (!) apps is invalid.
 890  */
 891 BOOL WINAPI GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 892 {
 893     WND *pWnd = WIN_GetPtr( hwnd );
 894     LPINTERNALPOS lpPos;
 895
 896     if (!pWnd) return FALSE;
 897     if (pWnd == WND_OTHER_PROCESS)
 898     {
 899         if (IsWindow( hwnd )) FIXME( "not supported on other process window %p\n", hwnd );
 900         return FALSE;
 901     }
 902
 903     lpPos = WINPOS_InitInternalPos( pWnd );
 904     wndpl->length  = sizeof(*wndpl);
 905     if( pWnd->dwStyle & WS_MINIMIZE )
 906         wndpl->showCmd = SW_SHOWMINIMIZED;
 907     else
 908         wndpl->showCmd = ( pWnd->dwStyle & WS_MAXIMIZE ) ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL ;
 909     if( pWnd->flags & WIN_RESTORE_MAX )
 910         wndpl->flags = WPF_RESTORETOMAXIMIZED;
 911     else
 912         wndpl->flags = 0;
 913     wndpl->ptMinPosition.x = lpPos->ptIconPos.x;
 914     wndpl->ptMinPosition.y = lpPos->ptIconPos.y;
 915     wndpl->ptMaxPosition.x = lpPos->ptMaxPos.x;
 916     wndpl->ptMaxPosition.y = lpPos->ptMaxPos.y;
 917     wndpl->rcNormalPosition.left   = lpPos->rectNormal.left;
 918     wndpl->rcNormalPosition.top    = lpPos->rectNormal.top;
 919     wndpl->rcNormalPosition.right  = lpPos->rectNormal.right;
 920     wndpl->rcNormalPosition.bottom = lpPos->rectNormal.bottom;
 921     WIN_ReleasePtr( pWnd );
 922     return TRUE;
 923 }
 924
 925
 926 /***********************************************************************
 927  *           WINPOS_SetPlacement
 928  */
 929 static BOOL WINPOS_SetPlacement( HWND hwnd, const WINDOWPLACEMENT *wndpl, UINT flags )
 930 {
 931     LPINTERNALPOS lpPos;
 932     DWORD style;
 933     WND *pWnd = WIN_GetPtr( hwnd );
 934
 935     if (!pWnd || pWnd == WND_OTHER_PROCESS) return FALSE;
 936     lpPos = WINPOS_InitInternalPos( pWnd );
 937
 938     if( flags & PLACE_MIN )
 939     {
 940         lpPos->ptIconPos.x = wndpl->ptMinPosition.x;
 941         lpPos->ptIconPos.y = wndpl->ptMinPosition.y;
 942     }
 943     if( flags & PLACE_MAX )
 944     {
 945         lpPos->ptMaxPos.x = wndpl->ptMaxPosition.x;
 946         lpPos->ptMaxPos.y = wndpl->ptMaxPosition.y;
 947     }
 948     if( flags & PLACE_RECT)
 949     {
 950         lpPos->rectNormal.left   = wndpl->rcNormalPosition.left;
 951         lpPos->rectNormal.top    = wndpl->rcNormalPosition.top;
 952         lpPos->rectNormal.right  = wndpl->rcNormalPosition.right;
 953         lpPos->rectNormal.bottom = wndpl->rcNormalPosition.bottom;
 954     }
 955
 956     style = pWnd->dwStyle;
 957     WIN_ReleasePtr( pWnd );
 958
 959     if( style & WS_MINIMIZE )
 960     {
 961         WINPOS_ShowIconTitle( hwnd, FALSE );
 962         if( wndpl->flags & WPF_SETMINPOSITION && !EMPTYPOINT(lpPos->ptIconPos))
 963             SetWindowPos( hwnd, 0, lpPos->ptIconPos.x, lpPos->ptIconPos.y,
 964                           0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 965     }
 966     else if( style & WS_MAXIMIZE )
 967     {
 968         if( !EMPTYPOINT(lpPos->ptMaxPos) )
 969             SetWindowPos( hwnd, 0, lpPos->ptMaxPos.x, lpPos->ptMaxPos.y,
 970                           0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 971     }
 972     else if( flags & PLACE_RECT )
 973         SetWindowPos( hwnd, 0, lpPos->rectNormal.left, lpPos->rectNormal.top,
 974                       lpPos->rectNormal.right - lpPos->rectNormal.left,
 975                       lpPos->rectNormal.bottom - lpPos->rectNormal.top,
 976                       SWP_NOZORDER | SWP_NOACTIVATE );
 977
 978     ShowWindow( hwnd, wndpl->showCmd );
 979
 980     if (IsIconic( hwnd ))
 981     {
 982         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE) WINPOS_ShowIconTitle( hwnd, TRUE );
 983
 984         /* SDK: ...valid only the next time... */
 985         if( wndpl->flags & WPF_RESTORETOMAXIMIZED )
 986         {
 987             pWnd = WIN_GetPtr( hwnd );
 988             if (pWnd && pWnd != WND_OTHER_PROCESS)
 989             {
 990                 pWnd->flags |= WIN_RESTORE_MAX;
 991                 WIN_ReleasePtr( pWnd );
 992             }
 993         }
 994     }
 995     return TRUE;
 996 }
 997
 998
 999 /***********************************************************************
1000  *              SetWindowPlacement (USER32.@)
1001  *
1002  * Win95:
1003  * Fails if wndpl->length of Win95 (!) apps is invalid.
1004  */
1005 BOOL WINAPI SetWindowPlacement( HWND hwnd, const WINDOWPLACEMENT *wpl )
1006 {
1007     if (!wpl) return FALSE;
1008     return WINPOS_SetPlacement( hwnd, wpl, PLACE_MIN | PLACE_MAX | PLACE_RECT );
1009 }
1010
1011
1012 /***********************************************************************
1013  *              AnimateWindow (USER32.@)
1014  *              Shows/Hides a window with an animation
1015  *              NO ANIMATION YET
1016  */
1017 BOOL WINAPI AnimateWindow(HWND hwnd, DWORD dwTime, DWORD dwFlags)
1018 {
1019         FIXME("partial stub\n");
1020
1021         /* If trying to show/hide and it's already   *
1022          * shown/hidden or invalid window, fail with *
1023          * invalid parameter                         */
1024         if(!IsWindow(hwnd) ||
1025            (IsWindowVisible(hwnd) && !(dwFlags & AW_HIDE)) ||
1026            (!IsWindowVisible(hwnd) && (dwFlags & AW_HIDE)))
1027         {
1028                 SetLastError(ERROR_INVALID_PARAMETER);
1029                 return FALSE;
1030         }
1031
1032         ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
1033
1034         return TRUE;
1035 }
1036
1037 /***********************************************************************
1038  *              SetInternalWindowPos (USER32.@)
1039  */
1040 void WINAPI SetInternalWindowPos( HWND hwnd, UINT showCmd,
1041                                     LPRECT rect, LPPOINT pt )
1042 {
1043     if( IsWindow(hwnd) )
1044     {
1045         WINDOWPLACEMENT wndpl;
1046         UINT flags;
1047
1048         wndpl.length  = sizeof(wndpl);
1049         wndpl.showCmd = showCmd;
1050         wndpl.flags = flags = 0;
1051
1052         if( pt )
1053         {
1054             flags |= PLACE_MIN;
1055             wndpl.flags |= WPF_SETMINPOSITION;
1056             wndpl.ptMinPosition = *pt;
1057         }
1058         if( rect )
1059         {
1060             flags |= PLACE_RECT;
1061             wndpl.rcNormalPosition = *rect;
1062         }
1063         WINPOS_SetPlacement( hwnd, &wndpl, flags );
1064     }
1065 }
1066
1067
1068 /*******************************************************************
1069  *         can_activate_window
1070  *
1071  * Check if we can activate the specified window.
1072  */
1073 static BOOL can_activate_window( HWND hwnd )
1074 {
1075     LONG style;
1076
1077     if (!hwnd) return FALSE;
1078     style = GetWindowLongW( hwnd, GWL_STYLE );
1079     if (!(style & WS_VISIBLE)) return FALSE;
1080     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
1081     return !(style & WS_DISABLED);
1082 }
1083
1084
1085 /*******************************************************************
1086  *         WINPOS_ActivateOtherWindow
1087  *
1088  *  Activates window other than pWnd.
1089  */
1090 void WINPOS_ActivateOtherWindow(HWND hwnd)
1091 {
1092     HWND hwndTo, fg;
1093
1094     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
1095     {
1096         hwndTo = GetAncestor( hwndTo, GA_ROOT );
1097         if (can_activate_window( hwndTo )) goto done;
1098     }
1099
1100     hwndTo = hwnd;
1101     for (;;)
1102     {
1103         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
1104         if (can_activate_window( hwndTo )) break;
1105     }
1106
1107  done:
1108     fg = GetForegroundWindow();
1109     TRACE("win = %p fg = %p\n", hwndTo, fg);
1110     if (!fg || (hwnd == fg))
1111     {
1112         if (SetForegroundWindow( hwndTo )) return;
1113     }
1114     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
1115 }
1116
1117
1118 /***********************************************************************
1119  *           WINPOS_HandleWindowPosChanging
1120  *
1121  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1122  */
1123 LONG WINPOS_HandleWindowPosChanging( HWND hwnd, WINDOWPOS *winpos )
1124 {
1125     POINT minTrack, maxTrack;
1126     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1127
1128     if (winpos->flags & SWP_NOSIZE) return 0;
1129     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1130     {
1131         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1132         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1133         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1134         if (!(style & WS_MINIMIZE))
1135         {
1136             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1137             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1138         }
1139     }
1140     return 0;
1141 }
1142
1143
1144 /***********************************************************************
1145  *           dump_winpos_flags
1146  */
1147 static void dump_winpos_flags(UINT flags)
1148 {
1149     TRACE("flags:");
1150     if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
1151     if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
1152     if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
1153     if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
1154     if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
1155     if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
1156     if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
1157     if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
1158     if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
1159     if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
1160     if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
1161     if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
1162     if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
1163
1164 #define DUMPED_FLAGS \
1165     (SWP_NOSIZE | \
1166     SWP_NOMOVE | \
1167     SWP_NOZORDER | \
1168     SWP_NOREDRAW | \
1169     SWP_NOACTIVATE | \
1170     SWP_FRAMECHANGED | \
1171     SWP_SHOWWINDOW | \
1172     SWP_HIDEWINDOW | \
1173     SWP_NOCOPYBITS | \
1174     SWP_NOOWNERZORDER | \
1175     SWP_NOSENDCHANGING | \
1176     SWP_DEFERERASE | \
1177     SWP_ASYNCWINDOWPOS)
1178
1179     if(flags & ~DUMPED_FLAGS) TRACE(" %08x", flags & ~DUMPED_FLAGS);
1180     TRACE("\n");
1181 #undef DUMPED_FLAGS
1182 }
1183
1184 /***********************************************************************
1185  *              SetWindowPos (USER32.@)
1186  */
1187 BOOL WINAPI SetWindowPos( HWND hwnd, HWND hwndInsertAfter,
1188                           INT x, INT y, INT cx, INT cy, UINT flags )
1189 {
1190     WINDOWPOS winpos;
1191
1192     TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1193           hwnd, hwndInsertAfter, x, y, cx, cy, flags);
1194     if(TRACE_ON(win)) dump_winpos_flags(flags);
1195
1196     if (is_broadcast(hwnd))
1197     {
1198         SetLastError( ERROR_INVALID_PARAMETER );
1199         return FALSE;
1200     }
1201
1202     winpos.hwnd = WIN_GetFullHandle(hwnd);
1203     winpos.hwndInsertAfter = WIN_GetFullHandle(hwndInsertAfter);
1204     winpos.x = x;
1205     winpos.y = y;
1206     winpos.cx = cx;
1207     winpos.cy = cy;
1208     winpos.flags = flags;
1209     if (WIN_IsCurrentThread( hwnd ))
1210     {
1211         if (USER_Driver.pSetWindowPos)
1212             return USER_Driver.pSetWindowPos( &winpos );
1213         return FALSE;
1214     }
1215     return SendMessageW( winpos.hwnd, WM_WINE_SETWINDOWPOS, 0, (LPARAM)&winpos );
1216 }
1217
1218
1219 /***********************************************************************
1220  *              BeginDeferWindowPos (USER32.@)
1221  */
1222 HDWP WINAPI BeginDeferWindowPos( INT count )
1223 {
1224     HDWP handle;
1225     DWP *pDWP;
1226
1227     TRACE("%d\n", count);
1228
1229     if (count < 0)
1230     {
1231         SetLastError(ERROR_INVALID_PARAMETER);
1232         return 0;
1233     }
1234     /* Windows allows zero count, in which case it allocates context for 8 moves */
1235     if (count == 0) count = 8;
1236
1237     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1238     if (!handle) return 0;
1239     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1240     pDWP->actualCount    = 0;
1241     pDWP->suggestedCount = count;
1242     pDWP->valid          = TRUE;
1243     pDWP->wMagic         = DWP_MAGIC;
1244     pDWP->hwndParent     = 0;
1245
1246     TRACE("returning hdwp %p\n", handle);
1247     return handle;
1248 }
1249
1250
1251 /***********************************************************************
1252  *              DeferWindowPos (USER32.@)
1253  */
1254 HDWP WINAPI DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter,
1255                                 INT x, INT y, INT cx, INT cy,
1256                                 UINT flags )
1257 {
1258     DWP *pDWP;
1259     int i;
1260     HDWP newhdwp = hdwp,retvalue;
1261
1262     TRACE("hdwp %p, hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1263           hdwp, hwnd, hwndAfter, x, y, cx, cy, flags);
1264
1265     hwnd = WIN_GetFullHandle( hwnd );
1266     if (hwnd == GetDesktopWindow()) return 0;
1267
1268     if (!(pDWP = USER_HEAP_LIN_ADDR( hdwp ))) return 0;
1269
1270     USER_Lock();
1271
1272     for (i = 0; i < pDWP->actualCount; i++)
1273     {
1274         if (pDWP->winPos[i].hwnd == hwnd)
1275         {
1276               /* Merge with the other changes */
1277             if (!(flags & SWP_NOZORDER))
1278             {
1279                 pDWP->winPos[i].hwndInsertAfter = WIN_GetFullHandle(hwndAfter);
1280             }
1281             if (!(flags & SWP_NOMOVE))
1282             {
1283                 pDWP->winPos[i].x = x;
1284                 pDWP->winPos[i].y = y;
1285             }
1286             if (!(flags & SWP_NOSIZE))
1287             {
1288                 pDWP->winPos[i].cx = cx;
1289                 pDWP->winPos[i].cy = cy;
1290             }
1291             pDWP->winPos[i].flags &= flags | ~(SWP_NOSIZE | SWP_NOMOVE |
1292                                                SWP_NOZORDER | SWP_NOREDRAW |
1293                                                SWP_NOACTIVATE | SWP_NOCOPYBITS|
1294                                                SWP_NOOWNERZORDER);
1295             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1296                                               SWP_FRAMECHANGED);
1297             retvalue = hdwp;
1298             goto END;
1299         }
1300     }
1301     if (pDWP->actualCount >= pDWP->suggestedCount)
1302     {
1303         newhdwp = USER_HEAP_REALLOC( hdwp,
1304                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1305         if (!newhdwp)
1306         {
1307             retvalue = 0;
1308             goto END;
1309         }
1310         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1311         pDWP->suggestedCount++;
1312     }
1313     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1314     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1315     pDWP->winPos[pDWP->actualCount].x = x;
1316     pDWP->winPos[pDWP->actualCount].y = y;
1317     pDWP->winPos[pDWP->actualCount].cx = cx;
1318     pDWP->winPos[pDWP->actualCount].cy = cy;
1319     pDWP->winPos[pDWP->actualCount].flags = flags;
1320     pDWP->actualCount++;
1321     retvalue = newhdwp;
1322 END:
1323     USER_Unlock();
1324     return retvalue;
1325 }
1326
1327
1328 /***********************************************************************
1329  *              EndDeferWindowPos (USER32.@)
1330  */
1331 BOOL WINAPI EndDeferWindowPos( HDWP hdwp )
1332 {
1333     DWP *pDWP;
1334     WINDOWPOS *winpos;
1335     BOOL res = TRUE;
1336     int i;
1337
1338     TRACE("%p\n", hdwp);
1339
1340     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1341     if (!pDWP) return FALSE;
1342     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1343     {
1344         if (!USER_Driver.pSetWindowPos || !(res = USER_Driver.pSetWindowPos( winpos ))) break;
1345     }
1346     USER_HEAP_FREE( hdwp );
1347     return res;
1348 }
1349
1350
1351 /***********************************************************************
1352  *              TileChildWindows (USER.199)
1353  */
1354 void WINAPI TileChildWindows16( HWND16 parent, WORD action )
1355 {
1356     FIXME("(%04x, %d): stub\n", parent, action);
1357 }
1358
1359 /***********************************************************************
1360  *              CascadeChildWindows (USER.198)
1361  */
1362 void WINAPI CascadeChildWindows16( HWND16 parent, WORD action )
1363 {
1364     FIXME("(%04x, %d): stub\n", parent, action);
1365 }