dlls/user32/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 "windef.h"
  30 #include "winbase.h"
  31 #include "wingdi.h"
  32 #include "winerror.h"
  33 #include "wine/server.h"
  34 #include "controls.h"
  35 #include "user_private.h"
  36 #include "win.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(win);
  40
  41 #define SWP_AGG_NOGEOMETRYCHANGE \
  42     (SWP_NOSIZE | SWP_NOCLIENTSIZE | SWP_NOZORDER)
  43 #define SWP_AGG_NOPOSCHANGE \
  44     (SWP_NOSIZE | SWP_NOMOVE | SWP_NOCLIENTSIZE | SWP_NOCLIENTMOVE | SWP_NOZORDER)
  45 #define SWP_AGG_STATUSFLAGS \
  46     (SWP_AGG_NOPOSCHANGE | SWP_FRAMECHANGED | SWP_HIDEWINDOW | SWP_SHOWWINDOW)
  47
  48 #define HAS_DLGFRAME(style,exStyle) \
  49     (((exStyle) & WS_EX_DLGMODALFRAME) || \
  50      (((style) & WS_DLGFRAME) && !((style) & WS_BORDER)))
  51
  52 #define HAS_THICKFRAME(style) \
  53     (((style) & WS_THICKFRAME) && \
  54      !(((style) & (WS_DLGFRAME|WS_BORDER)) == WS_DLGFRAME))
  55
  56 #define EMPTYPOINT(pt)          ((*(LONG*)&(pt)) == -1)
  57
  58 #define PLACE_MIN               0x0001
  59 #define PLACE_MAX               0x0002
  60 #define PLACE_RECT              0x0004
  61
  62
  63 #define DWP_MAGIC  ((INT)('W' | ('P' << 8) | ('O' << 16) | ('S' << 24)))
  64
  65 typedef struct
  66 {
  67     INT       actualCount;
  68     INT       suggestedCount;
  69     BOOL      valid;
  70     INT       wMagic;
  71     HWND      hwndParent;
  72     WINDOWPOS winPos[1];
  73 } DWP;
  74
  75 typedef struct
  76 {
  77     RECT16   rectNormal;
  78     POINT16  ptIconPos;
  79     POINT16  ptMaxPos;
  80     HWND     hwndIconTitle;
  81 } INTERNALPOS, *LPINTERNALPOS;
  82
  83 /* ----- internal functions ----- */
  84
  85 static const WCHAR SysIP_W[] = { 'S','y','s','I','P',0 };
  86
  87 static inline INTERNALPOS *get_internal_pos( HWND hwnd )
  88 {
  89     return GetPropW( hwnd, SysIP_W );
  90 }
  91
  92 static inline void set_internal_pos( HWND hwnd, INTERNALPOS *pos )
  93 {
  94     SetPropW( hwnd, SysIP_W, pos );
  95 }
  96
  97 /***********************************************************************
  98  *           WINPOS_CheckInternalPos
  99  *
 100  * Called when a window is destroyed.
 101  */
 102 void WINPOS_CheckInternalPos( HWND hwnd )
 103 {
 104     LPINTERNALPOS lpPos = get_internal_pos( hwnd );
 105
 106     if ( lpPos )
 107     {
 108         if( IsWindow(lpPos->hwndIconTitle) )
 109             DestroyWindow( lpPos->hwndIconTitle );
 110         HeapFree( GetProcessHeap(), 0, lpPos );
 111     }
 112 }
 113
 114 /***********************************************************************
 115  *              ArrangeIconicWindows (USER32.@)
 116  */
 117 UINT WINAPI ArrangeIconicWindows( HWND parent )
 118 {
 119     RECT rectParent;
 120     HWND hwndChild;
 121     INT x, y, xspacing, yspacing;
 122
 123     GetClientRect( parent, &rectParent );
 124     x = rectParent.left;
 125     y = rectParent.bottom;
 126     xspacing = GetSystemMetrics(SM_CXICONSPACING);
 127     yspacing = GetSystemMetrics(SM_CYICONSPACING);
 128
 129     hwndChild = GetWindow( parent, GW_CHILD );
 130     while (hwndChild)
 131     {
 132         if( IsIconic( hwndChild ) )
 133         {
 134             WINPOS_ShowIconTitle( hwndChild, FALSE );
 135
 136             SetWindowPos( hwndChild, 0, x + (xspacing - GetSystemMetrics(SM_CXICON)) / 2,
 137                             y - yspacing - GetSystemMetrics(SM_CYICON)/2, 0, 0,
 138                             SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 139             if( IsWindow(hwndChild) )
 140                 WINPOS_ShowIconTitle(hwndChild , TRUE );
 141
 142             if (x <= rectParent.right - xspacing) x += xspacing;
 143             else
 144             {
 145                 x = rectParent.left;
 146                 y -= yspacing;
 147             }
 148         }
 149         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 150     }
 151     return yspacing;
 152 }
 153
 154
 155 /***********************************************************************
 156  *              SwitchToThisWindow (USER32.@)
 157  */
 158 void WINAPI SwitchToThisWindow( HWND hwnd, BOOL restore )
 159 {
 160     ShowWindow( hwnd, restore ? SW_RESTORE : SW_SHOWMINIMIZED );
 161 }
 162
 163
 164 /***********************************************************************
 165  *              GetWindowRect (USER32.@)
 166  */
 167 BOOL WINAPI GetWindowRect( HWND hwnd, LPRECT rect )
 168 {
 169     BOOL ret = WIN_GetRectangles( hwnd, rect, NULL );
 170     if (ret)
 171     {
 172         MapWindowPoints( GetAncestor( hwnd, GA_PARENT ), 0, (POINT *)rect, 2 );
 173         TRACE( "hwnd %p (%d,%d)-(%d,%d)\n",
 174                hwnd, rect->left, rect->top, rect->right, rect->bottom);
 175     }
 176     return ret;
 177 }
 178
 179
 180 /***********************************************************************
 181  *              GetWindowRgn (USER32.@)
 182  */
 183 int WINAPI GetWindowRgn ( HWND hwnd, HRGN hrgn )
 184 {
 185     int nRet = ERROR;
 186     NTSTATUS status;
 187     HRGN win_rgn = 0;
 188     RGNDATA *data;
 189     size_t size = 256;
 190
 191     do
 192     {
 193         if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
 194         {
 195             SetLastError( ERROR_OUTOFMEMORY );
 196             return ERROR;
 197         }
 198         SERVER_START_REQ( get_window_region )
 199         {
 200             req->window = hwnd;
 201             wine_server_set_reply( req, data->Buffer, size );
 202             if (!(status = wine_server_call( req )))
 203             {
 204                 size_t reply_size = wine_server_reply_size( reply );
 205                 if (reply_size)
 206                 {
 207                     data->rdh.dwSize   = sizeof(data->rdh);
 208                     data->rdh.iType    = RDH_RECTANGLES;
 209                     data->rdh.nCount   = reply_size / sizeof(RECT);
 210                     data->rdh.nRgnSize = reply_size;
 211                     win_rgn = ExtCreateRegion( NULL, size, data );
 212                 }
 213             }
 214             else size = reply->total_size;
 215         }
 216         SERVER_END_REQ;
 217         HeapFree( GetProcessHeap(), 0, data );
 218     } while (status == STATUS_BUFFER_OVERFLOW);
 219
 220     if (status) SetLastError( RtlNtStatusToDosError(status) );
 221     else if (win_rgn)
 222     {
 223         nRet = CombineRgn( hrgn, win_rgn, 0, RGN_COPY );
 224         DeleteObject( win_rgn );
 225     }
 226     return nRet;
 227 }
 228
 229
 230 /***********************************************************************
 231  *              SetWindowRgn (USER32.@)
 232  */
 233 int WINAPI SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL bRedraw )
 234 {
 235     static const RECT empty_rect;
 236     BOOL ret;
 237
 238     if (hrgn)
 239     {
 240         RGNDATA *data;
 241         DWORD size;
 242
 243         if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
 244         if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 245         if (!GetRegionData( hrgn, size, data ))
 246         {
 247             HeapFree( GetProcessHeap(), 0, data );
 248             return FALSE;
 249         }
 250         SERVER_START_REQ( set_window_region )
 251         {
 252             req->window = hwnd;
 253             req->redraw = (bRedraw != 0);
 254             if (data->rdh.nCount)
 255                 wine_server_add_data( req, data->Buffer, data->rdh.nCount * sizeof(RECT) );
 256             else
 257                 wine_server_add_data( req, &empty_rect, sizeof(empty_rect) );
 258             ret = !wine_server_call_err( req );
 259         }
 260         SERVER_END_REQ;
 261     }
 262     else  /* clear existing region */
 263     {
 264         SERVER_START_REQ( set_window_region )
 265         {
 266             req->window = hwnd;
 267             req->redraw = (bRedraw != 0);
 268             ret = !wine_server_call_err( req );
 269         }
 270         SERVER_END_REQ;
 271     }
 272
 273     if (ret) ret = USER_Driver->pSetWindowRgn( hwnd, hrgn, bRedraw );
 274
 275     if (ret)
 276     {
 277         UINT swp_flags = SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE|SWP_FRAMECHANGED;
 278         if (hrgn) swp_flags |= SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE;
 279         if (!bRedraw) swp_flags |= SWP_NOREDRAW;
 280         SetWindowPos( hwnd, 0, 0, 0, 0, 0, swp_flags );
 281     }
 282     return ret;
 283 }
 284
 285
 286 /***********************************************************************
 287  *              GetClientRect (USER32.@)
 288  */
 289 BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
 290 {
 291     BOOL ret;
 292
 293     if ((ret = WIN_GetRectangles( hwnd, NULL, rect )))
 294     {
 295         rect->right -= rect->left;
 296         rect->bottom -= rect->top;
 297         rect->left = rect->top = 0;
 298     }
 299     return ret;
 300 }
 301
 302
 303 /*******************************************************************
 304  *              ClientToScreen (USER32.@)
 305  */
 306 BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
 307 {
 308     MapWindowPoints( hwnd, 0, lppnt, 1 );
 309     return TRUE;
 310 }
 311
 312
 313 /*******************************************************************
 314  *              ScreenToClient (USER32.@)
 315  */
 316 BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
 317 {
 318     MapWindowPoints( 0, hwnd, lppnt, 1 );
 319     return TRUE;
 320 }
 321
 322
 323 /***********************************************************************
 324  *           list_children_from_point
 325  *
 326  * Get the list of children that can contain point from the server.
 327  * Point is in screen coordinates.
 328  * Returned list must be freed by caller.
 329  */
 330 static HWND *list_children_from_point( HWND hwnd, POINT pt )
 331 {
 332     HWND *list;
 333     int size = 32;
 334
 335     for (;;)
 336     {
 337         int count = 0;
 338
 339         if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) break;
 340
 341         SERVER_START_REQ( get_window_children_from_point )
 342         {
 343             req->parent = hwnd;
 344             req->x = pt.x;
 345             req->y = pt.y;
 346             wine_server_set_reply( req, list, (size-1) * sizeof(HWND) );
 347             if (!wine_server_call( req )) count = reply->count;
 348         }
 349         SERVER_END_REQ;
 350         if (count && count < size)
 351         {
 352             list[count] = 0;
 353             return list;
 354         }
 355         HeapFree( GetProcessHeap(), 0, list );
 356         if (!count) break;
 357         size = count + 1;  /* restart with a large enough buffer */
 358     }
 359     return NULL;
 360 }
 361
 362
 363 /***********************************************************************
 364  *           WINPOS_WindowFromPoint
 365  *
 366  * Find the window and hittest for a given point.
 367  */
 368 HWND WINPOS_WindowFromPoint( HWND hwndScope, POINT pt, INT *hittest )
 369 {
 370     int i, res;
 371     HWND ret, *list;
 372
 373     if (!hwndScope) hwndScope = GetDesktopWindow();
 374
 375     *hittest = HTNOWHERE;
 376
 377     if (!(list = list_children_from_point( hwndScope, pt ))) return 0;
 378
 379     /* now determine the hittest */
 380
 381     for (i = 0; list[i]; i++)
 382     {
 383         LONG style = GetWindowLongW( list[i], GWL_STYLE );
 384
 385         /* If window is minimized or disabled, return at once */
 386         if (style & WS_MINIMIZE)
 387         {
 388             *hittest = HTCAPTION;
 389             break;
 390         }
 391         if (style & WS_DISABLED)
 392         {
 393             *hittest = HTERROR;
 394             break;
 395         }
 396         /* Send WM_NCCHITTEST (if same thread) */
 397         if (!WIN_IsCurrentThread( list[i] ))
 398         {
 399             *hittest = HTCLIENT;
 400             break;
 401         }
 402         res = SendMessageW( list[i], WM_NCHITTEST, 0, MAKELONG(pt.x,pt.y) );
 403         if (res != HTTRANSPARENT)
 404         {
 405             *hittest = res;  /* Found the window */
 406             break;
 407         }
 408         /* continue search with next window in z-order */
 409     }
 410     ret = list[i];
 411     HeapFree( GetProcessHeap(), 0, list );
 412     TRACE( "scope %p (%d,%d) returning %p\n", hwndScope, pt.x, pt.y, ret );
 413     return ret;
 414 }
 415
 416
 417 /*******************************************************************
 418  *              WindowFromPoint (USER32.@)
 419  */
 420 HWND WINAPI WindowFromPoint( POINT pt )
 421 {
 422     INT hittest;
 423     return WINPOS_WindowFromPoint( 0, pt, &hittest );
 424 }
 425
 426
 427 /*******************************************************************
 428  *              ChildWindowFromPoint (USER32.@)
 429  */
 430 HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
 431 {
 432     return ChildWindowFromPointEx( hwndParent, pt, CWP_ALL );
 433 }
 434
 435 /*******************************************************************
 436  *              RealChildWindowFromPoint (USER32.@)
 437  */
 438 HWND WINAPI RealChildWindowFromPoint( HWND hwndParent, POINT pt )
 439 {
 440     return ChildWindowFromPointEx( hwndParent, pt, CWP_SKIPTRANSPARENT );
 441 }
 442
 443 /*******************************************************************
 444  *              ChildWindowFromPointEx (USER32.@)
 445  */
 446 HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
 447 {
 448     /* pt is in the client coordinates */
 449     HWND *list;
 450     int i;
 451     RECT rect;
 452     HWND retvalue;
 453
 454     GetClientRect( hwndParent, &rect );
 455     if (!PtInRect( &rect, pt )) return 0;
 456     if (!(list = WIN_ListChildren( hwndParent ))) return hwndParent;
 457
 458     for (i = 0; list[i]; i++)
 459     {
 460         if (!WIN_GetRectangles( list[i], &rect, NULL )) continue;
 461         if (!PtInRect( &rect, pt )) continue;
 462         if (uFlags & (CWP_SKIPINVISIBLE|CWP_SKIPDISABLED))
 463         {
 464             LONG style = GetWindowLongW( list[i], GWL_STYLE );
 465             if ((uFlags & CWP_SKIPINVISIBLE) && !(style & WS_VISIBLE)) continue;
 466             if ((uFlags & CWP_SKIPDISABLED) && (style & WS_DISABLED)) continue;
 467         }
 468         if (uFlags & CWP_SKIPTRANSPARENT)
 469         {
 470             if (GetWindowLongW( list[i], GWL_EXSTYLE ) & WS_EX_TRANSPARENT) continue;
 471         }
 472         break;
 473     }
 474     retvalue = list[i];
 475     HeapFree( GetProcessHeap(), 0, list );
 476     if (!retvalue) retvalue = hwndParent;
 477     return retvalue;
 478 }
 479
 480
 481 /*******************************************************************
 482  *         WINPOS_GetWinOffset
 483  *
 484  * Calculate the offset between the origin of the two windows. Used
 485  * to implement MapWindowPoints.
 486  */
 487 static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
 488 {
 489     WND * wndPtr;
 490
 491     offset->x = offset->y = 0;
 492
 493     /* Translate source window origin to screen coords */
 494     if (hwndFrom)
 495     {
 496         HWND hwnd = hwndFrom;
 497
 498         while (hwnd)
 499         {
 500             if (hwnd == hwndTo) return;
 501             if (!(wndPtr = WIN_GetPtr( hwnd )))
 502             {
 503                 ERR( "bad hwndFrom = %p\n", hwnd );
 504                 return;
 505             }
 506             if (wndPtr == WND_DESKTOP) break;
 507             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 508             offset->x += wndPtr->rectClient.left;
 509             offset->y += wndPtr->rectClient.top;
 510             hwnd = wndPtr->parent;
 511             WIN_ReleasePtr( wndPtr );
 512         }
 513     }
 514
 515     /* Translate origin to destination window coords */
 516     if (hwndTo)
 517     {
 518         HWND hwnd = hwndTo;
 519
 520         while (hwnd)
 521         {
 522             if (!(wndPtr = WIN_GetPtr( hwnd )))
 523             {
 524                 ERR( "bad hwndTo = %p\n", hwnd );
 525                 return;
 526             }
 527             if (wndPtr == WND_DESKTOP) break;
 528             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 529             offset->x -= wndPtr->rectClient.left;
 530             offset->y -= wndPtr->rectClient.top;
 531             hwnd = wndPtr->parent;
 532             WIN_ReleasePtr( wndPtr );
 533         }
 534     }
 535     return;
 536
 537  other_process:  /* one of the parents may belong to another process, do it the hard way */
 538     offset->x = offset->y = 0;
 539     SERVER_START_REQ( get_windows_offset )
 540     {
 541         req->from = hwndFrom;
 542         req->to   = hwndTo;
 543         if (!wine_server_call( req ))
 544         {
 545             offset->x = reply->x;
 546             offset->y = reply->y;
 547         }
 548     }
 549     SERVER_END_REQ;
 550 }
 551
 552
 553 /*******************************************************************
 554  *              MapWindowPoints (USER.258)
 555  */
 556 void WINAPI MapWindowPoints16( HWND16 hwndFrom, HWND16 hwndTo,
 557                                LPPOINT16 lppt, UINT16 count )
 558 {
 559     POINT offset;
 560
 561     WINPOS_GetWinOffset( WIN_Handle32(hwndFrom), WIN_Handle32(hwndTo), &offset );
 562     while (count--)
 563     {
 564         lppt->x += offset.x;
 565         lppt->y += offset.y;
 566         lppt++;
 567     }
 568 }
 569
 570
 571 /*******************************************************************
 572  *              MapWindowPoints (USER32.@)
 573  */
 574 INT WINAPI MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, UINT count )
 575 {
 576     POINT offset;
 577
 578     WINPOS_GetWinOffset( hwndFrom, hwndTo, &offset );
 579     while (count--)
 580     {
 581         lppt->x += offset.x;
 582         lppt->y += offset.y;
 583         lppt++;
 584     }
 585     return MAKELONG( LOWORD(offset.x), LOWORD(offset.y) );
 586 }
 587
 588
 589 /***********************************************************************
 590  *              IsIconic (USER32.@)
 591  */
 592 BOOL WINAPI IsIconic(HWND hWnd)
 593 {
 594     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MINIMIZE) != 0;
 595 }
 596
 597
 598 /***********************************************************************
 599  *              IsZoomed (USER32.@)
 600  */
 601 BOOL WINAPI IsZoomed(HWND hWnd)
 602 {
 603     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MAXIMIZE) != 0;
 604 }
 605
 606
 607 /*******************************************************************
 608  *              AllowSetForegroundWindow (USER32.@)
 609  */
 610 BOOL WINAPI AllowSetForegroundWindow( DWORD procid )
 611 {
 612     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 613      * implemented, then fix this function. */
 614     return TRUE;
 615 }
 616
 617
 618 /*******************************************************************
 619  *              LockSetForegroundWindow (USER32.@)
 620  */
 621 BOOL WINAPI LockSetForegroundWindow( UINT lockcode )
 622 {
 623     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 624      * implemented, then fix this function. */
 625     return TRUE;
 626 }
 627
 628
 629 /***********************************************************************
 630  *              BringWindowToTop (USER32.@)
 631  */
 632 BOOL WINAPI BringWindowToTop( HWND hwnd )
 633 {
 634     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE );
 635 }
 636
 637
 638 /***********************************************************************
 639  *              MoveWindow (USER32.@)
 640  */
 641 BOOL WINAPI MoveWindow( HWND hwnd, INT x, INT y, INT cx, INT cy,
 642                             BOOL repaint )
 643 {
 644     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 645     if (!repaint) flags |= SWP_NOREDRAW;
 646     TRACE("%p %d,%d %dx%d %d\n", hwnd, x, y, cx, cy, repaint );
 647     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 648 }
 649
 650 /***********************************************************************
 651  *           WINPOS_InitInternalPos
 652  */
 653 static LPINTERNALPOS WINPOS_InitInternalPos( WND* wnd )
 654 {
 655     LPINTERNALPOS lpPos = get_internal_pos( wnd->hwndSelf );
 656     if( !lpPos )
 657     {
 658         /* this happens when the window is minimized/maximized
 659          * for the first time (rectWindow is not adjusted yet) */
 660
 661         lpPos = HeapAlloc( GetProcessHeap(), 0, sizeof(INTERNALPOS) );
 662         if( !lpPos ) return NULL;
 663
 664         set_internal_pos( wnd->hwndSelf, lpPos );
 665         lpPos->hwndIconTitle = 0; /* defer until needs to be shown */
 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         lpPos->ptIconPos.x = lpPos->ptIconPos.y = -1;
 671         lpPos->ptMaxPos.x = lpPos->ptMaxPos.y = -1;
 672     }
 673
 674     if( wnd->dwStyle & WS_MINIMIZE )
 675     {
 676         lpPos->ptIconPos.x = wnd->rectWindow.left;
 677         lpPos->ptIconPos.y = wnd->rectWindow.top;
 678     }
 679     else if( wnd->dwStyle & WS_MAXIMIZE )
 680     {
 681         lpPos->ptMaxPos.x = wnd->rectWindow.left;
 682         lpPos->ptMaxPos.y = wnd->rectWindow.top;
 683     }
 684     else
 685     {
 686         lpPos->rectNormal.left   = wnd->rectWindow.left;
 687         lpPos->rectNormal.top    = wnd->rectWindow.top;
 688         lpPos->rectNormal.right  = wnd->rectWindow.right;
 689         lpPos->rectNormal.bottom = wnd->rectWindow.bottom;
 690     }
 691     return lpPos;
 692 }
 693
 694 /***********************************************************************
 695  *           WINPOS_RedrawIconTitle
 696  */
 697 BOOL WINPOS_RedrawIconTitle( HWND hWnd )
 698 {
 699     LPINTERNALPOS lpPos = get_internal_pos( hWnd );
 700     if( lpPos )
 701     {
 702         if( lpPos->hwndIconTitle )
 703         {
 704             SendMessageW( lpPos->hwndIconTitle, WM_SHOWWINDOW, TRUE, 0);
 705             InvalidateRect( lpPos->hwndIconTitle, NULL, TRUE );
 706             return TRUE;
 707         }
 708     }
 709     return FALSE;
 710 }
 711
 712 /***********************************************************************
 713  *           WINPOS_ShowIconTitle
 714  */
 715 BOOL WINPOS_ShowIconTitle( HWND hwnd, BOOL bShow )
 716 {
 717     LPINTERNALPOS lpPos = get_internal_pos( hwnd );
 718
 719     if (lpPos && !GetPropA( hwnd, "__wine_x11_managed" ))
 720     {
 721         HWND title = lpPos->hwndIconTitle;
 722
 723         TRACE("%p %i\n", hwnd, (bShow != 0) );
 724
 725         if( !title )
 726             lpPos->hwndIconTitle = title = ICONTITLE_Create( hwnd );
 727         if( bShow )
 728         {
 729             if (!IsWindowVisible(title))
 730             {
 731                 SendMessageW( title, WM_SHOWWINDOW, TRUE, 0 );
 732                 SetWindowPos( title, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
 733                               SWP_NOACTIVATE | SWP_NOZORDER | SWP_SHOWWINDOW );
 734             }
 735         }
 736         else ShowWindow( title, SW_HIDE );
 737     }
 738     return FALSE;
 739 }
 740
 741 /*******************************************************************
 742  *           WINPOS_GetMinMaxInfo
 743  *
 744  * Get the minimized and maximized information for a window.
 745  */
 746 void WINPOS_GetMinMaxInfo( HWND hwnd, POINT *maxSize, POINT *maxPos,
 747                            POINT *minTrack, POINT *maxTrack )
 748 {
 749     LPINTERNALPOS lpPos;
 750     MINMAXINFO MinMax;
 751     HMONITOR monitor;
 752     INT xinc, yinc;
 753     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
 754     LONG exstyle = GetWindowLongA( hwnd, GWL_EXSTYLE );
 755     RECT rc;
 756
 757     /* Compute default values */
 758
 759     GetWindowRect(hwnd, &rc);
 760     MinMax.ptReserved.x = rc.left;
 761     MinMax.ptReserved.y = rc.top;
 762
 763     if (style & WS_CHILD)
 764     {
 765         if ((style & WS_CAPTION) == WS_CAPTION)
 766             style &= ~WS_BORDER; /* WS_CAPTION = WS_DLGFRAME | WS_BORDER */
 767
 768         GetClientRect(GetAncestor(hwnd,GA_PARENT), &rc);
 769         AdjustWindowRectEx(&rc, style, ((style & WS_POPUP) && GetMenu(hwnd)), exstyle);
 770
 771         /* avoid calculating this twice */
 772         style &= ~(WS_DLGFRAME | WS_BORDER | WS_THICKFRAME);
 773
 774         MinMax.ptMaxSize.x = rc.right - rc.left;
 775         MinMax.ptMaxSize.y = rc.bottom - rc.top;
 776     }
 777     else
 778     {
 779         MinMax.ptMaxSize.x = GetSystemMetrics(SM_CXSCREEN);
 780         MinMax.ptMaxSize.y = GetSystemMetrics(SM_CYSCREEN);
 781     }
 782     MinMax.ptMinTrackSize.x = GetSystemMetrics(SM_CXMINTRACK);
 783     MinMax.ptMinTrackSize.y = GetSystemMetrics(SM_CYMINTRACK);
 784     MinMax.ptMaxTrackSize.x = GetSystemMetrics(SM_CXMAXTRACK);
 785     MinMax.ptMaxTrackSize.y = GetSystemMetrics(SM_CYMAXTRACK);
 786
 787     if (HAS_DLGFRAME( style, exstyle ))
 788     {
 789         xinc = GetSystemMetrics(SM_CXDLGFRAME);
 790         yinc = GetSystemMetrics(SM_CYDLGFRAME);
 791     }
 792     else
 793     {
 794         xinc = yinc = 0;
 795         if (HAS_THICKFRAME(style))
 796         {
 797             xinc += GetSystemMetrics(SM_CXFRAME);
 798             yinc += GetSystemMetrics(SM_CYFRAME);
 799         }
 800         if (style & WS_BORDER)
 801         {
 802             xinc += GetSystemMetrics(SM_CXBORDER);
 803             yinc += GetSystemMetrics(SM_CYBORDER);
 804         }
 805     }
 806     MinMax.ptMaxSize.x += 2 * xinc;
 807     MinMax.ptMaxSize.y += 2 * yinc;
 808
 809     lpPos = get_internal_pos( hwnd );
 810     if( lpPos && !EMPTYPOINT(lpPos->ptMaxPos) )
 811     {
 812         MinMax.ptMaxPosition.x = lpPos->ptMaxPos.x;
 813         MinMax.ptMaxPosition.y = lpPos->ptMaxPos.y;
 814     }
 815     else
 816     {
 817         MinMax.ptMaxPosition.x = -xinc;
 818         MinMax.ptMaxPosition.y = -yinc;
 819     }
 820
 821     SendMessageW( hwnd, WM_GETMINMAXINFO, 0, (LPARAM)&MinMax );
 822
 823     /* if the app didn't change the values, adapt them for the current monitor */
 824
 825     if ((monitor = MonitorFromWindow( hwnd, MONITOR_DEFAULTTOPRIMARY )))
 826     {
 827         MONITORINFO mon_info;
 828
 829         mon_info.cbSize = sizeof(mon_info);
 830         GetMonitorInfoW( monitor, &mon_info );
 831
 832         if (MinMax.ptMaxSize.x == GetSystemMetrics(SM_CXSCREEN) + 2 * xinc &&
 833             MinMax.ptMaxSize.y == GetSystemMetrics(SM_CYSCREEN) + 2 * yinc)
 834         {
 835             MinMax.ptMaxSize.x = (mon_info.rcWork.right - mon_info.rcWork.left) + 2 * xinc;
 836             MinMax.ptMaxSize.y = (mon_info.rcWork.bottom - mon_info.rcWork.top) + 2 * yinc;
 837         }
 838         if (MinMax.ptMaxPosition.x == -xinc && MinMax.ptMaxPosition.y == -yinc)
 839         {
 840             MinMax.ptMaxPosition.x = mon_info.rcWork.left - xinc;
 841             MinMax.ptMaxPosition.y = mon_info.rcWork.top - yinc;
 842         }
 843     }
 844
 845       /* Some sanity checks */
 846
 847     TRACE("%d %d / %d %d / %d %d / %d %d\n",
 848                       MinMax.ptMaxSize.x, MinMax.ptMaxSize.y,
 849                       MinMax.ptMaxPosition.x, MinMax.ptMaxPosition.y,
 850                       MinMax.ptMaxTrackSize.x, MinMax.ptMaxTrackSize.y,
 851                       MinMax.ptMinTrackSize.x, MinMax.ptMinTrackSize.y);
 852     MinMax.ptMaxTrackSize.x = max( MinMax.ptMaxTrackSize.x,
 853                                    MinMax.ptMinTrackSize.x );
 854     MinMax.ptMaxTrackSize.y = max( MinMax.ptMaxTrackSize.y,
 855                                    MinMax.ptMinTrackSize.y );
 856
 857     if (maxSize) *maxSize = MinMax.ptMaxSize;
 858     if (maxPos) *maxPos = MinMax.ptMaxPosition;
 859     if (minTrack) *minTrack = MinMax.ptMinTrackSize;
 860     if (maxTrack) *maxTrack = MinMax.ptMaxTrackSize;
 861 }
 862
 863 /***********************************************************************
 864  *              ShowWindowAsync (USER32.@)
 865  *
 866  * doesn't wait; returns immediately.
 867  * used by threads to toggle windows in other (possibly hanging) threads
 868  */
 869 BOOL WINAPI ShowWindowAsync( HWND hwnd, INT cmd )
 870 {
 871     HWND full_handle;
 872
 873     if (is_broadcast(hwnd))
 874     {
 875         SetLastError( ERROR_INVALID_PARAMETER );
 876         return FALSE;
 877     }
 878
 879     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 880         return USER_Driver->pShowWindow( full_handle, cmd );
 881
 882     return SendNotifyMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 883 }
 884
 885
 886 /***********************************************************************
 887  *              ShowWindow (USER32.@)
 888  */
 889 BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
 890 {
 891     HWND full_handle;
 892
 893     if (is_broadcast(hwnd))
 894     {
 895         SetLastError( ERROR_INVALID_PARAMETER );
 896         return FALSE;
 897     }
 898     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 899         return USER_Driver->pShowWindow( full_handle, cmd );
 900
 901     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 902 }
 903
 904
 905 /***********************************************************************
 906  *              GetInternalWindowPos (USER32.@)
 907  */
 908 UINT WINAPI GetInternalWindowPos( HWND hwnd, LPRECT rectWnd,
 909                                       LPPOINT ptIcon )
 910 {
 911     WINDOWPLACEMENT wndpl;
 912     if (GetWindowPlacement( hwnd, &wndpl ))
 913     {
 914         if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 915         if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 916         return wndpl.showCmd;
 917     }
 918     return 0;
 919 }
 920
 921
 922 /***********************************************************************
 923  *              GetWindowPlacement (USER32.@)
 924  *
 925  * Win95:
 926  * Fails if wndpl->length of Win95 (!) apps is invalid.
 927  */
 928 BOOL WINAPI GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 929 {
 930     WND *pWnd = WIN_GetPtr( hwnd );
 931     LPINTERNALPOS lpPos;
 932
 933     if (!pWnd || pWnd == WND_DESKTOP) return FALSE;
 934     if (pWnd == WND_OTHER_PROCESS)
 935     {
 936         if (IsWindow( hwnd )) FIXME( "not supported on other process window %p\n", hwnd );
 937         return FALSE;
 938     }
 939
 940     lpPos = WINPOS_InitInternalPos( pWnd );
 941     wndpl->length  = sizeof(*wndpl);
 942     if( pWnd->dwStyle & WS_MINIMIZE )
 943         wndpl->showCmd = SW_SHOWMINIMIZED;
 944     else
 945         wndpl->showCmd = ( pWnd->dwStyle & WS_MAXIMIZE ) ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL ;
 946     if( pWnd->flags & WIN_RESTORE_MAX )
 947         wndpl->flags = WPF_RESTORETOMAXIMIZED;
 948     else
 949         wndpl->flags = 0;
 950     wndpl->ptMinPosition.x = lpPos->ptIconPos.x;
 951     wndpl->ptMinPosition.y = lpPos->ptIconPos.y;
 952     wndpl->ptMaxPosition.x = lpPos->ptMaxPos.x;
 953     wndpl->ptMaxPosition.y = lpPos->ptMaxPos.y;
 954     wndpl->rcNormalPosition.left   = lpPos->rectNormal.left;
 955     wndpl->rcNormalPosition.top    = lpPos->rectNormal.top;
 956     wndpl->rcNormalPosition.right  = lpPos->rectNormal.right;
 957     wndpl->rcNormalPosition.bottom = lpPos->rectNormal.bottom;
 958     WIN_ReleasePtr( pWnd );
 959     return TRUE;
 960 }
 961
 962
 963 /***********************************************************************
 964  *           WINPOS_SetPlacement
 965  */
 966 static BOOL WINPOS_SetPlacement( HWND hwnd, const WINDOWPLACEMENT *wndpl, UINT flags )
 967 {
 968     LPINTERNALPOS lpPos;
 969     DWORD style;
 970     WND *pWnd = WIN_GetPtr( hwnd );
 971
 972     if (!pWnd || pWnd == WND_OTHER_PROCESS || pWnd == WND_DESKTOP) return FALSE;
 973     lpPos = WINPOS_InitInternalPos( pWnd );
 974
 975     if( flags & PLACE_MIN )
 976     {
 977         lpPos->ptIconPos.x = wndpl->ptMinPosition.x;
 978         lpPos->ptIconPos.y = wndpl->ptMinPosition.y;
 979     }
 980     if( flags & PLACE_MAX )
 981     {
 982         lpPos->ptMaxPos.x = wndpl->ptMaxPosition.x;
 983         lpPos->ptMaxPos.y = wndpl->ptMaxPosition.y;
 984     }
 985     if( flags & PLACE_RECT)
 986     {
 987         lpPos->rectNormal.left   = wndpl->rcNormalPosition.left;
 988         lpPos->rectNormal.top    = wndpl->rcNormalPosition.top;
 989         lpPos->rectNormal.right  = wndpl->rcNormalPosition.right;
 990         lpPos->rectNormal.bottom = wndpl->rcNormalPosition.bottom;
 991     }
 992
 993     style = pWnd->dwStyle;
 994     WIN_ReleasePtr( pWnd );
 995
 996     if( style & WS_MINIMIZE )
 997     {
 998         WINPOS_ShowIconTitle( hwnd, FALSE );
 999         if( wndpl->flags & WPF_SETMINPOSITION && !EMPTYPOINT(lpPos->ptIconPos))
1000             SetWindowPos( hwnd, 0, lpPos->ptIconPos.x, lpPos->ptIconPos.y,
1001                           0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
1002     }
1003     else if( style & WS_MAXIMIZE )
1004     {
1005         if( !EMPTYPOINT(lpPos->ptMaxPos) )
1006             SetWindowPos( hwnd, 0, lpPos->ptMaxPos.x, lpPos->ptMaxPos.y,
1007                           0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
1008     }
1009     else if( flags & PLACE_RECT )
1010         SetWindowPos( hwnd, 0, lpPos->rectNormal.left, lpPos->rectNormal.top,
1011                       lpPos->rectNormal.right - lpPos->rectNormal.left,
1012                       lpPos->rectNormal.bottom - lpPos->rectNormal.top,
1013                       SWP_NOZORDER | SWP_NOACTIVATE );
1014
1015     ShowWindow( hwnd, wndpl->showCmd );
1016
1017     if (IsIconic( hwnd ))
1018     {
1019         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE) WINPOS_ShowIconTitle( hwnd, TRUE );
1020
1021         /* SDK: ...valid only the next time... */
1022         if( wndpl->flags & WPF_RESTORETOMAXIMIZED )
1023         {
1024             pWnd = WIN_GetPtr( hwnd );
1025             if (pWnd && pWnd != WND_OTHER_PROCESS)
1026             {
1027                 pWnd->flags |= WIN_RESTORE_MAX;
1028                 WIN_ReleasePtr( pWnd );
1029             }
1030         }
1031     }
1032     return TRUE;
1033 }
1034
1035
1036 /***********************************************************************
1037  *              SetWindowPlacement (USER32.@)
1038  *
1039  * Win95:
1040  * Fails if wndpl->length of Win95 (!) apps is invalid.
1041  */
1042 BOOL WINAPI SetWindowPlacement( HWND hwnd, const WINDOWPLACEMENT *wpl )
1043 {
1044     if (!wpl) return FALSE;
1045     return WINPOS_SetPlacement( hwnd, wpl, PLACE_MIN | PLACE_MAX | PLACE_RECT );
1046 }
1047
1048
1049 /***********************************************************************
1050  *              AnimateWindow (USER32.@)
1051  *              Shows/Hides a window with an animation
1052  *              NO ANIMATION YET
1053  */
1054 BOOL WINAPI AnimateWindow(HWND hwnd, DWORD dwTime, DWORD dwFlags)
1055 {
1056         FIXME("partial stub\n");
1057
1058         /* If trying to show/hide and it's already   *
1059          * shown/hidden or invalid window, fail with *
1060          * invalid parameter                         */
1061         if(!IsWindow(hwnd) ||
1062            (IsWindowVisible(hwnd) && !(dwFlags & AW_HIDE)) ||
1063            (!IsWindowVisible(hwnd) && (dwFlags & AW_HIDE)))
1064         {
1065                 SetLastError(ERROR_INVALID_PARAMETER);
1066                 return FALSE;
1067         }
1068
1069         ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
1070
1071         return TRUE;
1072 }
1073
1074 /***********************************************************************
1075  *              SetInternalWindowPos (USER32.@)
1076  */
1077 void WINAPI SetInternalWindowPos( HWND hwnd, UINT showCmd,
1078                                     LPRECT rect, LPPOINT pt )
1079 {
1080     if( IsWindow(hwnd) )
1081     {
1082         WINDOWPLACEMENT wndpl;
1083         UINT flags;
1084
1085         wndpl.length  = sizeof(wndpl);
1086         wndpl.showCmd = showCmd;
1087         wndpl.flags = flags = 0;
1088
1089         if( pt )
1090         {
1091             flags |= PLACE_MIN;
1092             wndpl.flags |= WPF_SETMINPOSITION;
1093             wndpl.ptMinPosition = *pt;
1094         }
1095         if( rect )
1096         {
1097             flags |= PLACE_RECT;
1098             wndpl.rcNormalPosition = *rect;
1099         }
1100         WINPOS_SetPlacement( hwnd, &wndpl, flags );
1101     }
1102 }
1103
1104
1105 /*******************************************************************
1106  *         can_activate_window
1107  *
1108  * Check if we can activate the specified window.
1109  */
1110 static BOOL can_activate_window( HWND hwnd )
1111 {
1112     LONG style;
1113
1114     if (!hwnd) return FALSE;
1115     style = GetWindowLongW( hwnd, GWL_STYLE );
1116     if (!(style & WS_VISIBLE)) return FALSE;
1117     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
1118     return !(style & WS_DISABLED);
1119 }
1120
1121
1122 /*******************************************************************
1123  *         WINPOS_ActivateOtherWindow
1124  *
1125  *  Activates window other than pWnd.
1126  */
1127 void WINPOS_ActivateOtherWindow(HWND hwnd)
1128 {
1129     HWND hwndTo, fg;
1130
1131     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
1132     {
1133         hwndTo = GetAncestor( hwndTo, GA_ROOT );
1134         if (can_activate_window( hwndTo )) goto done;
1135     }
1136
1137     hwndTo = hwnd;
1138     for (;;)
1139     {
1140         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
1141         if (can_activate_window( hwndTo )) break;
1142     }
1143
1144  done:
1145     fg = GetForegroundWindow();
1146     TRACE("win = %p fg = %p\n", hwndTo, fg);
1147     if (!fg || (hwnd == fg))
1148     {
1149         if (SetForegroundWindow( hwndTo )) return;
1150     }
1151     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
1152 }
1153
1154
1155 /***********************************************************************
1156  *           WINPOS_HandleWindowPosChanging
1157  *
1158  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1159  */
1160 LONG WINPOS_HandleWindowPosChanging( HWND hwnd, WINDOWPOS *winpos )
1161 {
1162     POINT minTrack, maxTrack;
1163     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1164
1165     if (winpos->flags & SWP_NOSIZE) return 0;
1166     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1167     {
1168         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1169         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1170         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1171         if (!(style & WS_MINIMIZE))
1172         {
1173             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1174             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1175         }
1176     }
1177     return 0;
1178 }
1179
1180
1181 /***********************************************************************
1182  *           dump_winpos_flags
1183  */
1184 static void dump_winpos_flags(UINT flags)
1185 {
1186     TRACE("flags:");
1187     if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
1188     if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
1189     if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
1190     if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
1191     if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
1192     if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
1193     if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
1194     if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
1195     if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
1196     if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
1197     if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
1198     if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
1199     if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
1200
1201 #define DUMPED_FLAGS \
1202     (SWP_NOSIZE | \
1203     SWP_NOMOVE | \
1204     SWP_NOZORDER | \
1205     SWP_NOREDRAW | \
1206     SWP_NOACTIVATE | \
1207     SWP_FRAMECHANGED | \
1208     SWP_SHOWWINDOW | \
1209     SWP_HIDEWINDOW | \
1210     SWP_NOCOPYBITS | \
1211     SWP_NOOWNERZORDER | \
1212     SWP_NOSENDCHANGING | \
1213     SWP_DEFERERASE | \
1214     SWP_ASYNCWINDOWPOS)
1215
1216     if(flags & ~DUMPED_FLAGS) TRACE(" %08x", flags & ~DUMPED_FLAGS);
1217     TRACE("\n");
1218 #undef DUMPED_FLAGS
1219 }
1220
1221 /***********************************************************************
1222  *           SWP_DoWinPosChanging
1223  */
1224 static BOOL SWP_DoWinPosChanging( WINDOWPOS* pWinpos, RECT* pNewWindowRect, RECT* pNewClientRect )
1225 {
1226     WND *wndPtr;
1227
1228     /* Send WM_WINDOWPOSCHANGING message */
1229
1230     if (!(pWinpos->flags & SWP_NOSENDCHANGING))
1231         SendMessageW( pWinpos->hwnd, WM_WINDOWPOSCHANGING, 0, (LPARAM)pWinpos );
1232
1233     if (!(wndPtr = WIN_GetPtr( pWinpos->hwnd )) ||
1234         wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return FALSE;
1235
1236     /* Calculate new position and size */
1237
1238     *pNewWindowRect = wndPtr->rectWindow;
1239     *pNewClientRect = (wndPtr->dwStyle & WS_MINIMIZE) ? wndPtr->rectWindow
1240                                                     : wndPtr->rectClient;
1241
1242     if (!(pWinpos->flags & SWP_NOSIZE))
1243     {
1244         pNewWindowRect->right  = pNewWindowRect->left + pWinpos->cx;
1245         pNewWindowRect->bottom = pNewWindowRect->top + pWinpos->cy;
1246     }
1247     if (!(pWinpos->flags & SWP_NOMOVE))
1248     {
1249         pNewWindowRect->left    = pWinpos->x;
1250         pNewWindowRect->top     = pWinpos->y;
1251         pNewWindowRect->right  += pWinpos->x - wndPtr->rectWindow.left;
1252         pNewWindowRect->bottom += pWinpos->y - wndPtr->rectWindow.top;
1253
1254         OffsetRect( pNewClientRect, pWinpos->x - wndPtr->rectWindow.left,
1255                                     pWinpos->y - wndPtr->rectWindow.top );
1256     }
1257     pWinpos->flags |= SWP_NOCLIENTMOVE | SWP_NOCLIENTSIZE;
1258
1259     TRACE( "hwnd %p, after %p, swp %d,%d %dx%d flags %08x\n",
1260            pWinpos->hwnd, pWinpos->hwndInsertAfter, pWinpos->x, pWinpos->y,
1261            pWinpos->cx, pWinpos->cy, pWinpos->flags );
1262     TRACE( "current %s style %08x new %s\n",
1263            wine_dbgstr_rect( &wndPtr->rectWindow ), wndPtr->dwStyle,
1264            wine_dbgstr_rect( pNewWindowRect ));
1265
1266     WIN_ReleasePtr( wndPtr );
1267     return TRUE;
1268 }
1269
1270 /***********************************************************************
1271  *           get_valid_rects
1272  *
1273  * Compute the valid rects from the old and new client rect and WVR_* flags.
1274  * Helper for WM_NCCALCSIZE handling.
1275  */
1276 static inline void get_valid_rects( const RECT *old_client, const RECT *new_client, UINT flags,
1277                                     RECT *valid )
1278 {
1279     int cx, cy;
1280
1281     if (flags & WVR_REDRAW)
1282     {
1283         SetRectEmpty( &valid[0] );
1284         SetRectEmpty( &valid[1] );
1285         return;
1286     }
1287
1288     if (flags & WVR_VALIDRECTS)
1289     {
1290         if (!IntersectRect( &valid[0], &valid[0], new_client ) ||
1291             !IntersectRect( &valid[1], &valid[1], old_client ))
1292         {
1293             SetRectEmpty( &valid[0] );
1294             SetRectEmpty( &valid[1] );
1295             return;
1296         }
1297         flags = WVR_ALIGNLEFT | WVR_ALIGNTOP;
1298     }
1299     else
1300     {
1301         valid[0] = *new_client;
1302         valid[1] = *old_client;
1303     }
1304
1305     /* make sure the rectangles have the same size */
1306     cx = min( valid[0].right - valid[0].left, valid[1].right - valid[1].left );
1307     cy = min( valid[0].bottom - valid[0].top, valid[1].bottom - valid[1].top );
1308
1309     if (flags & WVR_ALIGNBOTTOM)
1310     {
1311         valid[0].top = valid[0].bottom - cy;
1312         valid[1].top = valid[1].bottom - cy;
1313     }
1314     else
1315     {
1316         valid[0].bottom = valid[0].top + cy;
1317         valid[1].bottom = valid[1].top + cy;
1318     }
1319     if (flags & WVR_ALIGNRIGHT)
1320     {
1321         valid[0].left = valid[0].right - cx;
1322         valid[1].left = valid[1].right - cx;
1323     }
1324     else
1325     {
1326         valid[0].right = valid[0].left + cx;
1327         valid[1].right = valid[1].left + cx;
1328     }
1329 }
1330
1331 struct move_owned_info
1332 {
1333     HWND owner;
1334     HWND insert_after;
1335 };
1336
1337 static BOOL CALLBACK move_owned_popups( HWND hwnd, LPARAM lparam )
1338 {
1339     struct move_owned_info *info = (struct move_owned_info *)lparam;
1340
1341     if (hwnd == info->owner) return FALSE;
1342     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) &&
1343         GetWindow( hwnd, GW_OWNER ) == info->owner)
1344     {
1345         SetWindowPos( hwnd, info->insert_after, 0, 0, 0, 0,
1346                       SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE |
1347                       SWP_NOSENDCHANGING | SWP_DEFERERASE );
1348         info->insert_after = hwnd;
1349     }
1350     return TRUE;
1351 }
1352
1353 /***********************************************************************
1354  *           SWP_DoOwnedPopups
1355  *
1356  * fix Z order taking into account owned popups -
1357  * basically we need to maintain them above the window that owns them
1358  *
1359  * FIXME: hide/show owned popups when owner visibility changes.
1360  */
1361 static HWND SWP_DoOwnedPopups(HWND hwnd, HWND hwndInsertAfter)
1362 {
1363     HWND owner = GetWindow( hwnd, GW_OWNER );
1364     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1365     struct move_owned_info info;
1366
1367     TRACE("(%p) hInsertAfter = %p\n", hwnd, hwndInsertAfter );
1368
1369     if ((style & WS_POPUP) && owner)
1370     {
1371         /* make sure this popup stays above the owner */
1372
1373         if (hwndInsertAfter != HWND_TOP && hwndInsertAfter != HWND_TOPMOST)
1374         {
1375             HWND hwndLocalPrev = HWND_TOP;
1376             HWND prev = GetWindow( owner, GW_HWNDPREV );
1377
1378             while (prev && prev != hwndInsertAfter)
1379             {
1380                 if (hwndLocalPrev == HWND_TOP && GetWindowLongW( prev, GWL_STYLE ) & WS_VISIBLE)
1381                     hwndLocalPrev = prev;
1382                 prev = GetWindow( prev, GW_HWNDPREV );
1383             }
1384             if (!prev) hwndInsertAfter = hwndLocalPrev;
1385         }
1386     }
1387     else if (style & WS_CHILD) return hwndInsertAfter;
1388
1389     info.owner = hwnd;
1390     info.insert_after = hwndInsertAfter;
1391     EnumWindows( move_owned_popups, (LPARAM)&info );
1392     return info.insert_after;
1393 }
1394
1395 /***********************************************************************
1396  *           SWP_DoNCCalcSize
1397  */
1398 static UINT SWP_DoNCCalcSize( WINDOWPOS* pWinpos, const RECT* pNewWindowRect, RECT* pNewClientRect,
1399                               RECT *validRects )
1400 {
1401     UINT wvrFlags = 0;
1402     WND *wndPtr;
1403
1404     if (!(wndPtr = WIN_GetPtr( pWinpos->hwnd )) || wndPtr == WND_OTHER_PROCESS) return 0;
1405
1406       /* Send WM_NCCALCSIZE message to get new client area */
1407     if( (pWinpos->flags & (SWP_FRAMECHANGED | SWP_NOSIZE)) != SWP_NOSIZE )
1408     {
1409         NCCALCSIZE_PARAMS params;
1410         WINDOWPOS winposCopy;
1411
1412         params.rgrc[0] = *pNewWindowRect;
1413         params.rgrc[1] = wndPtr->rectWindow;
1414         params.rgrc[2] = wndPtr->rectClient;
1415         params.lppos = &winposCopy;
1416         winposCopy = *pWinpos;
1417         WIN_ReleasePtr( wndPtr );
1418
1419         wvrFlags = SendMessageW( pWinpos->hwnd, WM_NCCALCSIZE, TRUE, (LPARAM)&params );
1420
1421         *pNewClientRect = params.rgrc[0];
1422
1423         if (!(wndPtr = WIN_GetPtr( pWinpos->hwnd )) || wndPtr == WND_OTHER_PROCESS) return 0;
1424
1425         TRACE( "hwnd %p old win %s old client %s new win %s new client %s\n", pWinpos->hwnd,
1426                wine_dbgstr_rect(&wndPtr->rectWindow), wine_dbgstr_rect(&wndPtr->rectClient),
1427                wine_dbgstr_rect(pNewWindowRect), wine_dbgstr_rect(pNewClientRect) );
1428
1429         if( pNewClientRect->left != wndPtr->rectClient.left ||
1430             pNewClientRect->top != wndPtr->rectClient.top )
1431             pWinpos->flags &= ~SWP_NOCLIENTMOVE;
1432
1433         if( (pNewClientRect->right - pNewClientRect->left !=
1434              wndPtr->rectClient.right - wndPtr->rectClient.left))
1435             pWinpos->flags &= ~SWP_NOCLIENTSIZE;
1436         else
1437             wvrFlags &= ~WVR_HREDRAW;
1438
1439         if (pNewClientRect->bottom - pNewClientRect->top !=
1440              wndPtr->rectClient.bottom - wndPtr->rectClient.top)
1441             pWinpos->flags &= ~SWP_NOCLIENTSIZE;
1442         else
1443             wvrFlags &= ~WVR_VREDRAW;
1444
1445         validRects[0] = params.rgrc[1];
1446         validRects[1] = params.rgrc[2];
1447     }
1448     else
1449     {
1450         if (!(pWinpos->flags & SWP_NOMOVE) &&
1451             (pNewClientRect->left != wndPtr->rectClient.left ||
1452              pNewClientRect->top != wndPtr->rectClient.top))
1453             pWinpos->flags &= ~SWP_NOCLIENTMOVE;
1454     }
1455
1456     if (pWinpos->flags & (SWP_NOCOPYBITS | SWP_NOREDRAW | SWP_SHOWWINDOW | SWP_HIDEWINDOW))
1457     {
1458         SetRectEmpty( &validRects[0] );
1459         SetRectEmpty( &validRects[1] );
1460     }
1461     else get_valid_rects( &wndPtr->rectClient, pNewClientRect, wvrFlags, validRects );
1462
1463     WIN_ReleasePtr( wndPtr );
1464     return wvrFlags;
1465 }
1466
1467 /* fix redundant flags and values in the WINDOWPOS structure */
1468 static BOOL fixup_flags( WINDOWPOS *winpos )
1469 {
1470     HWND parent;
1471     WND *wndPtr = WIN_GetPtr( winpos->hwnd );
1472     BOOL ret = TRUE;
1473
1474     if (!wndPtr || wndPtr == WND_OTHER_PROCESS)
1475     {
1476         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1477         return FALSE;
1478     }
1479     winpos->hwnd = wndPtr->hwndSelf;  /* make it a full handle */
1480
1481     /* Finally make sure that all coordinates are valid */
1482     if (winpos->x < -32768) winpos->x = -32768;
1483     else if (winpos->x > 32767) winpos->x = 32767;
1484     if (winpos->y < -32768) winpos->y = -32768;
1485     else if (winpos->y > 32767) winpos->y = 32767;
1486
1487     if (winpos->cx < 0) winpos->cx = 0;
1488     else if (winpos->cx > 32767) winpos->cx = 32767;
1489     if (winpos->cy < 0) winpos->cy = 0;
1490     else if (winpos->cy > 32767) winpos->cy = 32767;
1491
1492     parent = GetAncestor( winpos->hwnd, GA_PARENT );
1493     if (!IsWindowVisible( parent )) winpos->flags |= SWP_NOREDRAW;
1494
1495     if (wndPtr->dwStyle & WS_VISIBLE) winpos->flags &= ~SWP_SHOWWINDOW;
1496     else
1497     {
1498         winpos->flags &= ~SWP_HIDEWINDOW;
1499         if (!(winpos->flags & SWP_SHOWWINDOW)) winpos->flags |= SWP_NOREDRAW;
1500     }
1501
1502     if ((wndPtr->rectWindow.right - wndPtr->rectWindow.left == winpos->cx) &&
1503         (wndPtr->rectWindow.bottom - wndPtr->rectWindow.top == winpos->cy))
1504         winpos->flags |= SWP_NOSIZE;    /* Already the right size */
1505
1506     if ((wndPtr->rectWindow.left == winpos->x) && (wndPtr->rectWindow.top == winpos->y))
1507         winpos->flags |= SWP_NOMOVE;    /* Already the right position */
1508
1509     if ((wndPtr->dwStyle & (WS_POPUP | WS_CHILD)) != WS_CHILD)
1510     {
1511         if (!(winpos->flags & (SWP_NOACTIVATE|SWP_HIDEWINDOW)) && /* Bring to the top when activating */
1512             (winpos->flags & SWP_NOZORDER ||
1513              (winpos->hwndInsertAfter != HWND_TOPMOST && winpos->hwndInsertAfter != HWND_NOTOPMOST)))
1514         {
1515             winpos->flags &= ~SWP_NOZORDER;
1516             winpos->hwndInsertAfter = HWND_TOP;
1517         }
1518     }
1519
1520     /* Check hwndInsertAfter */
1521     if (winpos->flags & SWP_NOZORDER) goto done;
1522
1523     /* fix sign extension */
1524     if (winpos->hwndInsertAfter == (HWND)0xffff) winpos->hwndInsertAfter = HWND_TOPMOST;
1525     else if (winpos->hwndInsertAfter == (HWND)0xfffe) winpos->hwndInsertAfter = HWND_NOTOPMOST;
1526
1527     /* hwndInsertAfter must be a sibling of the window */
1528     if (winpos->hwndInsertAfter == HWND_TOP)
1529     {
1530         if (GetWindow(winpos->hwnd, GW_HWNDFIRST) == winpos->hwnd)
1531             winpos->flags |= SWP_NOZORDER;
1532     }
1533     else if (winpos->hwndInsertAfter == HWND_BOTTOM)
1534     {
1535         if (!(wndPtr->dwExStyle & WS_EX_TOPMOST) && GetWindow(winpos->hwnd, GW_HWNDLAST) == winpos->hwnd)
1536             winpos->flags |= SWP_NOZORDER;
1537     }
1538     else if (winpos->hwndInsertAfter == HWND_TOPMOST)
1539     {
1540         if ((wndPtr->dwExStyle & WS_EX_TOPMOST) && GetWindow(winpos->hwnd, GW_HWNDFIRST) == winpos->hwnd)
1541             winpos->flags |= SWP_NOZORDER;
1542     }
1543     else if (winpos->hwndInsertAfter == HWND_NOTOPMOST)
1544     {
1545         if (!(wndPtr->dwExStyle & WS_EX_TOPMOST))
1546             winpos->flags |= SWP_NOZORDER;
1547     }
1548     else
1549     {
1550         if (GetAncestor( winpos->hwndInsertAfter, GA_PARENT ) != parent) ret = FALSE;
1551         else
1552         {
1553             /* don't need to change the Zorder of hwnd if it's already inserted
1554              * after hwndInsertAfter or when inserting hwnd after itself.
1555              */
1556             if ((winpos->hwnd == winpos->hwndInsertAfter) ||
1557                 (winpos->hwnd == GetWindow( winpos->hwndInsertAfter, GW_HWNDNEXT )))
1558                 winpos->flags |= SWP_NOZORDER;
1559         }
1560     }
1561  done:
1562     WIN_ReleasePtr( wndPtr );
1563     return ret;
1564 }
1565
1566
1567 /***********************************************************************
1568  *              set_window_pos
1569  *
1570  * Backend implementation of SetWindowPos.
1571  */
1572 BOOL set_window_pos( HWND hwnd, HWND insert_after, UINT swp_flags,
1573                      const RECT *window_rect, const RECT *client_rect, const RECT *valid_rects )
1574 {
1575     WND *win;
1576     BOOL ret;
1577     RECT visible_rect;
1578
1579     if (!(win = WIN_GetPtr( hwnd ))) return FALSE;
1580     if (win == WND_DESKTOP || win == WND_OTHER_PROCESS) return FALSE;
1581
1582     SERVER_START_REQ( set_window_pos )
1583     {
1584         req->handle        = hwnd;
1585         req->previous      = insert_after;
1586         req->flags         = swp_flags;
1587         req->window.left   = window_rect->left;
1588         req->window.top    = window_rect->top;
1589         req->window.right  = window_rect->right;
1590         req->window.bottom = window_rect->bottom;
1591         req->client.left   = client_rect->left;
1592         req->client.top    = client_rect->top;
1593         req->client.right  = client_rect->right;
1594         req->client.bottom = client_rect->bottom;
1595         if (!IsRectEmpty( &valid_rects[0] ))
1596             wine_server_add_data( req, valid_rects, 2 * sizeof(*valid_rects) );
1597         if ((ret = !wine_server_call( req )))
1598         {
1599             win->dwStyle    = reply->new_style;
1600             win->dwExStyle  = reply->new_ex_style;
1601             win->rectWindow = *window_rect;
1602             win->rectClient = *client_rect;
1603             visible_rect.left   = reply->visible.left;
1604             visible_rect.top    = reply->visible.top;
1605             visible_rect.right  = reply->visible.right;
1606             visible_rect.bottom = reply->visible.bottom;
1607         }
1608     }
1609     SERVER_END_REQ;
1610     WIN_ReleasePtr( win );
1611
1612     if (ret)
1613         USER_Driver->pSetWindowPos( hwnd, insert_after, swp_flags, window_rect,
1614                                     client_rect, &visible_rect, valid_rects );
1615     return ret;
1616 }
1617
1618
1619 /***********************************************************************
1620  *              USER_SetWindowPos
1621  *
1622  *     User32 internal function
1623  */
1624 BOOL USER_SetWindowPos( WINDOWPOS * winpos )
1625 {
1626     RECT newWindowRect, newClientRect, valid_rects[2];
1627     UINT orig_flags;
1628
1629     orig_flags = winpos->flags;
1630
1631     /* First make sure that coordinates are valid for WM_WINDOWPOSCHANGING */
1632     if (!(winpos->flags & SWP_NOMOVE))
1633     {
1634         if (winpos->x < -32768) winpos->x = -32768;
1635         else if (winpos->x > 32767) winpos->x = 32767;
1636         if (winpos->y < -32768) winpos->y = -32768;
1637         else if (winpos->y > 32767) winpos->y = 32767;
1638     }
1639     if (!(winpos->flags & SWP_NOSIZE))
1640     {
1641         if (winpos->cx < 0) winpos->cx = 0;
1642         else if (winpos->cx > 32767) winpos->cx = 32767;
1643         if (winpos->cy < 0) winpos->cy = 0;
1644         else if (winpos->cy > 32767) winpos->cy = 32767;
1645     }
1646
1647     if (!SWP_DoWinPosChanging( winpos, &newWindowRect, &newClientRect )) return FALSE;
1648
1649     /* Fix redundant flags */
1650     if (!fixup_flags( winpos )) return FALSE;
1651
1652     if((winpos->flags & (SWP_NOZORDER | SWP_HIDEWINDOW | SWP_SHOWWINDOW)) != SWP_NOZORDER)
1653     {
1654         if (GetAncestor( winpos->hwnd, GA_PARENT ) == GetDesktopWindow())
1655             winpos->hwndInsertAfter = SWP_DoOwnedPopups( winpos->hwnd, winpos->hwndInsertAfter );
1656     }
1657
1658     /* Common operations */
1659
1660     SWP_DoNCCalcSize( winpos, &newWindowRect, &newClientRect, valid_rects );
1661
1662     if (!set_window_pos( winpos->hwnd, winpos->hwndInsertAfter, orig_flags,
1663                          &newWindowRect, &newClientRect, valid_rects ))
1664         return FALSE;
1665
1666     /* erase parent when hiding or resizing child */
1667     if (!(orig_flags & SWP_DEFERERASE) &&
1668         ((orig_flags & SWP_HIDEWINDOW) ||
1669          (!(orig_flags & SWP_SHOWWINDOW) &&
1670           (winpos->flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOGEOMETRYCHANGE)))
1671     {
1672         HWND parent = GetAncestor( winpos->hwnd, GA_PARENT );
1673         if (!parent || parent == GetDesktopWindow()) parent = winpos->hwnd;
1674         erase_now( parent, 0 );
1675     }
1676
1677     if( winpos->flags & SWP_HIDEWINDOW )
1678         HideCaret(winpos->hwnd);
1679     else if (winpos->flags & SWP_SHOWWINDOW)
1680         ShowCaret(winpos->hwnd);
1681
1682     if (!(winpos->flags & (SWP_NOACTIVATE|SWP_HIDEWINDOW)))
1683     {
1684         /* child windows get WM_CHILDACTIVATE message */
1685         if ((GetWindowLongW( winpos->hwnd, GWL_STYLE ) & (WS_CHILD | WS_POPUP)) == WS_CHILD)
1686             SendMessageW( winpos->hwnd, WM_CHILDACTIVATE, 0, 0 );
1687         else
1688             SetForegroundWindow( winpos->hwnd );
1689     }
1690
1691       /* And last, send the WM_WINDOWPOSCHANGED message */
1692
1693     TRACE("\tstatus flags = %04x\n", winpos->flags & SWP_AGG_STATUSFLAGS);
1694
1695     if (((winpos->flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE))
1696     {
1697         /* WM_WINDOWPOSCHANGED is sent even if SWP_NOSENDCHANGING is set
1698            and always contains final window position.
1699          */
1700         winpos->x = newWindowRect.left;
1701         winpos->y = newWindowRect.top;
1702         winpos->cx = newWindowRect.right - newWindowRect.left;
1703         winpos->cy = newWindowRect.bottom - newWindowRect.top;
1704         SendMessageW( winpos->hwnd, WM_WINDOWPOSCHANGED, 0, (LPARAM)winpos );
1705     }
1706     return TRUE;
1707 }
1708
1709 /***********************************************************************
1710  *              SetWindowPos (USER32.@)
1711  */
1712 BOOL WINAPI SetWindowPos( HWND hwnd, HWND hwndInsertAfter,
1713                           INT x, INT y, INT cx, INT cy, UINT flags )
1714 {
1715     WINDOWPOS winpos;
1716
1717     TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1718           hwnd, hwndInsertAfter, x, y, cx, cy, flags);
1719     if(TRACE_ON(win)) dump_winpos_flags(flags);
1720
1721     if (is_broadcast(hwnd))
1722     {
1723         SetLastError( ERROR_INVALID_PARAMETER );
1724         return FALSE;
1725     }
1726
1727     winpos.hwnd = WIN_GetFullHandle(hwnd);
1728     winpos.hwndInsertAfter = WIN_GetFullHandle(hwndInsertAfter);
1729     winpos.x = x;
1730     winpos.y = y;
1731     winpos.cx = cx;
1732     winpos.cy = cy;
1733     winpos.flags = flags;
1734
1735     if (WIN_IsCurrentThread( hwnd ))
1736         return USER_SetWindowPos(&winpos);
1737
1738     return SendMessageW( winpos.hwnd, WM_WINE_SETWINDOWPOS, 0, (LPARAM)&winpos );
1739 }
1740
1741
1742 /***********************************************************************
1743  *              BeginDeferWindowPos (USER32.@)
1744  */
1745 HDWP WINAPI BeginDeferWindowPos( INT count )
1746 {
1747     HDWP handle;
1748     DWP *pDWP;
1749
1750     TRACE("%d\n", count);
1751
1752     if (count < 0)
1753     {
1754         SetLastError(ERROR_INVALID_PARAMETER);
1755         return 0;
1756     }
1757     /* Windows allows zero count, in which case it allocates context for 8 moves */
1758     if (count == 0) count = 8;
1759
1760     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1761     if (!handle) return 0;
1762     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1763     pDWP->actualCount    = 0;
1764     pDWP->suggestedCount = count;
1765     pDWP->valid          = TRUE;
1766     pDWP->wMagic         = DWP_MAGIC;
1767     pDWP->hwndParent     = 0;
1768
1769     TRACE("returning hdwp %p\n", handle);
1770     return handle;
1771 }
1772
1773
1774 /***********************************************************************
1775  *              DeferWindowPos (USER32.@)
1776  */
1777 HDWP WINAPI DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter,
1778                                 INT x, INT y, INT cx, INT cy,
1779                                 UINT flags )
1780 {
1781     DWP *pDWP;
1782     int i;
1783     HDWP newhdwp = hdwp,retvalue;
1784
1785     TRACE("hdwp %p, hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1786           hdwp, hwnd, hwndAfter, x, y, cx, cy, flags);
1787
1788     hwnd = WIN_GetFullHandle( hwnd );
1789     if (hwnd == GetDesktopWindow()) return 0;
1790
1791     if (!(pDWP = USER_HEAP_LIN_ADDR( hdwp ))) return 0;
1792
1793     USER_Lock();
1794
1795     for (i = 0; i < pDWP->actualCount; i++)
1796     {
1797         if (pDWP->winPos[i].hwnd == hwnd)
1798         {
1799               /* Merge with the other changes */
1800             if (!(flags & SWP_NOZORDER))
1801             {
1802                 pDWP->winPos[i].hwndInsertAfter = WIN_GetFullHandle(hwndAfter);
1803             }
1804             if (!(flags & SWP_NOMOVE))
1805             {
1806                 pDWP->winPos[i].x = x;
1807                 pDWP->winPos[i].y = y;
1808             }
1809             if (!(flags & SWP_NOSIZE))
1810             {
1811                 pDWP->winPos[i].cx = cx;
1812                 pDWP->winPos[i].cy = cy;
1813             }
1814             pDWP->winPos[i].flags &= flags | ~(SWP_NOSIZE | SWP_NOMOVE |
1815                                                SWP_NOZORDER | SWP_NOREDRAW |
1816                                                SWP_NOACTIVATE | SWP_NOCOPYBITS|
1817                                                SWP_NOOWNERZORDER);
1818             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1819                                               SWP_FRAMECHANGED);
1820             retvalue = hdwp;
1821             goto END;
1822         }
1823     }
1824     if (pDWP->actualCount >= pDWP->suggestedCount)
1825     {
1826         newhdwp = USER_HEAP_REALLOC( hdwp,
1827                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1828         if (!newhdwp)
1829         {
1830             retvalue = 0;
1831             goto END;
1832         }
1833         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1834         pDWP->suggestedCount++;
1835     }
1836     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1837     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1838     pDWP->winPos[pDWP->actualCount].x = x;
1839     pDWP->winPos[pDWP->actualCount].y = y;
1840     pDWP->winPos[pDWP->actualCount].cx = cx;
1841     pDWP->winPos[pDWP->actualCount].cy = cy;
1842     pDWP->winPos[pDWP->actualCount].flags = flags;
1843     pDWP->actualCount++;
1844     retvalue = newhdwp;
1845 END:
1846     USER_Unlock();
1847     return retvalue;
1848 }
1849
1850
1851 /***********************************************************************
1852  *              EndDeferWindowPos (USER32.@)
1853  */
1854 BOOL WINAPI EndDeferWindowPos( HDWP hdwp )
1855 {
1856     DWP *pDWP;
1857     WINDOWPOS *winpos;
1858     BOOL res = TRUE;
1859     int i;
1860
1861     TRACE("%p\n", hdwp);
1862
1863     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1864     if (!pDWP) return FALSE;
1865     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1866     {
1867         TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1868                winpos->hwnd, winpos->hwndInsertAfter, winpos->x, winpos->y,
1869                winpos->cx, winpos->cy, winpos->flags);
1870
1871         if (!(res = USER_SetWindowPos( winpos ))) break;
1872     }
1873     USER_HEAP_FREE( hdwp );
1874     return res;
1875 }
1876
1877
1878 /***********************************************************************
1879  *              TileChildWindows (USER.199)
1880  */
1881 void WINAPI TileChildWindows16( HWND16 parent, WORD action )
1882 {
1883     FIXME("(%04x, %d): stub\n", parent, action);
1884 }
1885
1886 /***********************************************************************
1887  *              CascadeChildWindows (USER.198)
1888  */
1889 void WINAPI CascadeChildWindows16( HWND16 parent, WORD action )
1890 {
1891     FIXME("(%04x, %d): stub\n", parent, action);
1892 }