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 "wine/winuser16.h"
  33 #include "wine/server.h"
  34 #include "controls.h"
  35 #include "user.h"
  36 #include "win.h"
  37 #include "message.h"
  38 #include "winpos.h"
  39 #include "nonclient.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 /* ----- internal variables ----- */
  72
  73 static LPCSTR atomInternalPos;
  74
  75
  76 /***********************************************************************
  77  *           WINPOS_CreateInternalPosAtom
  78  */
  79 BOOL WINPOS_CreateInternalPosAtom()
  80 {
  81     LPCSTR str = "SysIP";
  82     atomInternalPos = (LPCSTR)(DWORD)GlobalAddAtomA(str);
  83     return (atomInternalPos) ? TRUE : FALSE;
  84 }
  85
  86 /***********************************************************************
  87  *           WINPOS_CheckInternalPos
  88  *
  89  * Called when a window is destroyed.
  90  */
  91 void WINPOS_CheckInternalPos( HWND hwnd )
  92 {
  93     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( hwnd, atomInternalPos );
  94
  95     if( lpPos )
  96     {
  97         if( IsWindow(lpPos->hwndIconTitle) )
  98             DestroyWindow( lpPos->hwndIconTitle );
  99         HeapFree( GetProcessHeap(), 0, lpPos );
 100     }
 101 }
 102
 103 /***********************************************************************
 104  *              ArrangeIconicWindows (USER32.@)
 105  */
 106 UINT WINAPI ArrangeIconicWindows( HWND parent )
 107 {
 108     RECT rectParent;
 109     HWND hwndChild;
 110     INT x, y, xspacing, yspacing;
 111
 112     GetClientRect( parent, &rectParent );
 113     x = rectParent.left;
 114     y = rectParent.bottom;
 115     xspacing = GetSystemMetrics(SM_CXICONSPACING);
 116     yspacing = GetSystemMetrics(SM_CYICONSPACING);
 117
 118     hwndChild = GetWindow( parent, GW_CHILD );
 119     while (hwndChild)
 120     {
 121         if( IsIconic( hwndChild ) )
 122         {
 123             WINPOS_ShowIconTitle( hwndChild, FALSE );
 124
 125             SetWindowPos( hwndChild, 0, x + (xspacing - GetSystemMetrics(SM_CXICON)) / 2,
 126                             y - yspacing - GetSystemMetrics(SM_CYICON)/2, 0, 0,
 127                             SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 128             if( IsWindow(hwndChild) )
 129                 WINPOS_ShowIconTitle(hwndChild , TRUE );
 130
 131             if (x <= rectParent.right - xspacing) x += xspacing;
 132             else
 133             {
 134                 x = rectParent.left;
 135                 y -= yspacing;
 136             }
 137         }
 138         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 139     }
 140     return yspacing;
 141 }
 142
 143
 144 /***********************************************************************
 145  *              SwitchToThisWindow (USER32.@)
 146  */
 147 void WINAPI SwitchToThisWindow( HWND hwnd, BOOL restore )
 148 {
 149     ShowWindow( hwnd, restore ? SW_RESTORE : SW_SHOWMINIMIZED );
 150 }
 151
 152
 153 /***********************************************************************
 154  *              GetWindowRect (USER32.@)
 155  */
 156 BOOL WINAPI GetWindowRect( HWND hwnd, LPRECT rect )
 157 {
 158     BOOL ret = WIN_GetRectangles( hwnd, rect, NULL );
 159     if (ret)
 160     {
 161         MapWindowPoints( GetAncestor( hwnd, GA_PARENT ), 0, (POINT *)rect, 2 );
 162         TRACE( "hwnd %p (%ld,%ld)-(%ld,%ld)\n",
 163                hwnd, rect->left, rect->top, rect->right, rect->bottom);
 164     }
 165     return ret;
 166 }
 167
 168
 169 /***********************************************************************
 170  *              GetWindowRgn (USER32.@)
 171  */
 172 int WINAPI GetWindowRgn ( HWND hwnd, HRGN hrgn )
 173 {
 174     int nRet = ERROR;
 175     WND *wndPtr = WIN_GetPtr( hwnd );
 176
 177     if (wndPtr == WND_OTHER_PROCESS)
 178     {
 179         if (IsWindow( hwnd ))
 180             FIXME( "not supported on other process window %p\n", hwnd );
 181         wndPtr = NULL;
 182     }
 183     if (!wndPtr)
 184     {
 185         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 186         return ERROR;
 187     }
 188     if (wndPtr->hrgnWnd) nRet = CombineRgn( hrgn, wndPtr->hrgnWnd, 0, RGN_COPY );
 189     WIN_ReleasePtr( wndPtr );
 190     return nRet;
 191 }
 192
 193
 194 /***********************************************************************
 195  *              SetWindowRgn (USER32.@)
 196  */
 197 int WINAPI SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL bRedraw )
 198 {
 199     RECT rect;
 200     WND *wndPtr;
 201
 202     if (hrgn) /* verify that region really exists */
 203     {
 204         if (GetRgnBox( hrgn, &rect ) == ERROR) return FALSE;
 205     }
 206
 207     if (USER_Driver.pSetWindowRgn)
 208         return USER_Driver.pSetWindowRgn( hwnd, hrgn, bRedraw );
 209
 210     if ((wndPtr = WIN_GetPtr( hwnd )) == WND_OTHER_PROCESS)
 211     {
 212         if (IsWindow( hwnd ))
 213             FIXME( "not supported on other process window %p\n", hwnd );
 214         wndPtr = NULL;
 215     }
 216     if (!wndPtr)
 217     {
 218         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 219         return FALSE;
 220     }
 221
 222     if (wndPtr->hrgnWnd == hrgn)
 223     {
 224         WIN_ReleasePtr( wndPtr );
 225         return TRUE;
 226     }
 227
 228     if (wndPtr->hrgnWnd)
 229     {
 230         /* delete previous region */
 231         DeleteObject(wndPtr->hrgnWnd);
 232         wndPtr->hrgnWnd = 0;
 233     }
 234     wndPtr->hrgnWnd = hrgn;
 235     WIN_ReleasePtr( wndPtr );
 236
 237     /* Size the window to the rectangle of the new region (if it isn't NULL) */
 238     if (hrgn) SetWindowPos( hwnd, 0, rect.left, rect.top,
 239                             rect.right  - rect.left, rect.bottom - rect.top,
 240                             SWP_NOSIZE | SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOACTIVATE |
 241                             SWP_NOZORDER | (bRedraw ? 0 : SWP_NOREDRAW) );
 242     return TRUE;
 243 }
 244
 245
 246 /***********************************************************************
 247  *              GetClientRect (USER32.@)
 248  */
 249 BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
 250 {
 251     BOOL ret;
 252
 253     rect->right = rect->bottom = 0;
 254     if ((ret = WIN_GetRectangles( hwnd, NULL, rect )))
 255     {
 256         rect->right -= rect->left;
 257         rect->bottom -= rect->top;
 258     }
 259     rect->left = rect->top = 0;
 260     return ret;
 261 }
 262
 263
 264 /*******************************************************************
 265  *              ClientToScreen (USER32.@)
 266  */
 267 BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
 268 {
 269     MapWindowPoints( hwnd, 0, lppnt, 1 );
 270     return TRUE;
 271 }
 272
 273
 274 /*******************************************************************
 275  *              ScreenToClient (USER32.@)
 276  */
 277 BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
 278 {
 279     MapWindowPoints( 0, hwnd, lppnt, 1 );
 280     return TRUE;
 281 }
 282
 283
 284 /***********************************************************************
 285  *           find_child_from_point
 286  *
 287  * Find the child that contains pt. Helper for WindowFromPoint.
 288  * pt is in parent client coordinates.
 289  * lparam is the param to pass in the WM_NCHITTEST message.
 290  */
 291 static HWND find_child_from_point( HWND parent, POINT pt, INT *hittest, LPARAM lparam )
 292 {
 293     int i, res;
 294     LONG style, exstyle;
 295     RECT rectWindow, rectClient;
 296     WND *wndPtr;
 297     HWND *list = WIN_ListChildren( parent );
 298     HWND retvalue = 0;
 299
 300     if (!list) return 0;
 301     for (i = 0; list[i]; i++)
 302     {
 303         /* If point is in window, and window is visible, and it  */
 304         /* is enabled (or it's a top-level window), then explore */
 305         /* its children. Otherwise, go to the next window.       */
 306
 307         style = GetWindowLongW( list[i], GWL_STYLE );
 308         if (!(style & WS_VISIBLE)) continue;  /* not visible -> skip */
 309         if ((style & (WS_POPUP | WS_CHILD | WS_DISABLED)) == (WS_CHILD | WS_DISABLED))
 310             continue;  /* disabled child -> skip */
 311         exstyle = GetWindowLongW( list[i], GWL_EXSTYLE );
 312         if ((exstyle & (WS_EX_LAYERED | WS_EX_TRANSPARENT)) == (WS_EX_LAYERED | WS_EX_TRANSPARENT))
 313             continue;  /* transparent -> skip */
 314
 315         if (!WIN_GetRectangles( list[i], &rectWindow, &rectClient )) continue;
 316         if (!PtInRect( &rectWindow, pt )) continue;  /* not in window -> skip */
 317
 318         /* FIXME: check window region for other processes too */
 319         if ((wndPtr = WIN_GetPtr( list[i] )) && wndPtr != WND_OTHER_PROCESS)
 320         {
 321             if (wndPtr->hrgnWnd && !PtInRegion( wndPtr->hrgnWnd,
 322                                                 pt.x - rectWindow.left, pt.y - rectWindow.top ))
 323             {
 324                 WIN_ReleasePtr( wndPtr );
 325                 continue;  /* point outside window region -> skip */
 326             }
 327             WIN_ReleasePtr( wndPtr );
 328         }
 329
 330         /* If window is minimized or disabled, return at once */
 331         if (style & WS_MINIMIZE)
 332         {
 333             *hittest = HTCAPTION;
 334             retvalue = list[i];
 335             break;
 336         }
 337         if (style & WS_DISABLED)
 338         {
 339             *hittest = HTERROR;
 340             retvalue = list[i];
 341             break;
 342         }
 343
 344         /* If point is in client area, explore children */
 345         if (PtInRect( &rectClient, pt ))
 346         {
 347             POINT new_pt;
 348
 349             new_pt.x = pt.x - rectClient.left;
 350             new_pt.y = pt.y - rectClient.top;
 351             if ((retvalue = find_child_from_point( list[i], new_pt, hittest, lparam ))) break;
 352         }
 353
 354         /* Now it's inside window, send WM_NCCHITTEST (if same thread) */
 355         if (!WIN_IsCurrentThread( list[i] ))
 356         {
 357             *hittest = HTCLIENT;
 358             retvalue = list[i];
 359             break;
 360         }
 361         if ((res = SendMessageA( list[i], WM_NCHITTEST, 0, lparam )) != HTTRANSPARENT)
 362         {
 363             *hittest = res;  /* Found the window */
 364             retvalue = list[i];
 365             break;
 366         }
 367         /* continue search with next sibling */
 368     }
 369     HeapFree( GetProcessHeap(), 0, list );
 370     return retvalue;
 371 }
 372
 373
 374 /***********************************************************************
 375  *           WINPOS_WindowFromPoint
 376  *
 377  * Find the window and hittest for a given point.
 378  */
 379 HWND WINPOS_WindowFromPoint( HWND hwndScope, POINT pt, INT *hittest )
 380 {
 381     POINT xy = pt;
 382     int res;
 383     LONG style;
 384
 385     TRACE("scope %p %ld,%ld\n", hwndScope, pt.x, pt.y);
 386
 387     if (!hwndScope) hwndScope = GetDesktopWindow();
 388     style = GetWindowLongW( hwndScope, GWL_STYLE );
 389
 390     *hittest = HTERROR;
 391     if (style & WS_DISABLED) return 0;
 392
 393     MapWindowPoints( GetDesktopWindow(), GetAncestor( hwndScope, GA_PARENT ), &xy, 1 );
 394
 395     if (!(style & WS_MINIMIZE))
 396     {
 397         RECT rectClient;
 398         if (WIN_GetRectangles( hwndScope, NULL, &rectClient ) && PtInRect( &rectClient, xy ))
 399         {
 400             HWND ret;
 401
 402             xy.x -= rectClient.left;
 403             xy.y -= rectClient.top;
 404             if ((ret = find_child_from_point( hwndScope, xy, hittest, MAKELONG( pt.x, pt.y ) )))
 405             {
 406                 TRACE( "found child %p\n", ret );
 407                 return ret;
 408             }
 409         }
 410     }
 411
 412     /* If nothing found, try the scope window */
 413     if (!WIN_IsCurrentThread( hwndScope ))
 414     {
 415         *hittest = HTCLIENT;
 416         TRACE( "returning %p\n", hwndScope );
 417         return hwndScope;
 418     }
 419     res = SendMessageA( hwndScope, WM_NCHITTEST, 0, MAKELONG( pt.x, pt.y ) );
 420     if (res != HTTRANSPARENT)
 421     {
 422         *hittest = res;  /* Found the window */
 423         TRACE( "returning %p\n", hwndScope );
 424         return hwndScope;
 425     }
 426     *hittest = HTNOWHERE;
 427     TRACE( "nothing found\n" );
 428     return 0;
 429 }
 430
 431
 432 /*******************************************************************
 433  *              WindowFromPoint (USER32.@)
 434  */
 435 HWND WINAPI WindowFromPoint( POINT pt )
 436 {
 437     INT hittest;
 438     return WINPOS_WindowFromPoint( 0, pt, &hittest );
 439 }
 440
 441
 442 /*******************************************************************
 443  *              ChildWindowFromPoint (USER32.@)
 444  */
 445 HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
 446 {
 447     return ChildWindowFromPointEx( hwndParent, pt, CWP_ALL );
 448 }
 449
 450 /*******************************************************************
 451  *              ChildWindowFromPointEx (USER32.@)
 452  */
 453 HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
 454 {
 455     /* pt is in the client coordinates */
 456     HWND *list;
 457     int i;
 458     RECT rect;
 459     HWND retvalue;
 460
 461     GetClientRect( hwndParent, &rect );
 462     if (!PtInRect( &rect, pt )) return 0;
 463     if (!(list = WIN_ListChildren( hwndParent ))) return 0;
 464
 465     for (i = 0; list[i]; i++)
 466     {
 467         if (!WIN_GetRectangles( list[i], &rect, NULL )) continue;
 468         if (!PtInRect( &rect, pt )) continue;
 469         if (uFlags & (CWP_SKIPINVISIBLE|CWP_SKIPDISABLED))
 470         {
 471             LONG style = GetWindowLongW( list[i], GWL_STYLE );
 472             if ((uFlags & CWP_SKIPINVISIBLE) && !(style & WS_VISIBLE)) continue;
 473             if ((uFlags & CWP_SKIPDISABLED) && (style & WS_DISABLED)) continue;
 474         }
 475         if (uFlags & CWP_SKIPTRANSPARENT)
 476         {
 477             if (GetWindowLongW( list[i], GWL_EXSTYLE ) & WS_EX_TRANSPARENT) continue;
 478         }
 479         break;
 480     }
 481     retvalue = list[i];
 482     HeapFree( GetProcessHeap(), 0, list );
 483     if (!retvalue) retvalue = hwndParent;
 484     return retvalue;
 485 }
 486
 487
 488 /*******************************************************************
 489  *         WINPOS_GetWinOffset
 490  *
 491  * Calculate the offset between the origin of the two windows. Used
 492  * to implement MapWindowPoints.
 493  */
 494 static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
 495 {
 496     WND * wndPtr;
 497
 498     offset->x = offset->y = 0;
 499
 500     /* Translate source window origin to screen coords */
 501     if (hwndFrom)
 502     {
 503         HWND hwnd = hwndFrom;
 504
 505         while (hwnd)
 506         {
 507             if (hwnd == hwndTo) return;
 508             if (!(wndPtr = WIN_GetPtr( hwnd )))
 509             {
 510                 ERR( "bad hwndFrom = %p\n", hwnd );
 511                 return;
 512             }
 513             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 514             offset->x += wndPtr->rectClient.left;
 515             offset->y += wndPtr->rectClient.top;
 516             hwnd = wndPtr->parent;
 517             WIN_ReleasePtr( wndPtr );
 518         }
 519     }
 520
 521     /* Translate origin to destination window coords */
 522     if (hwndTo)
 523     {
 524         HWND hwnd = hwndTo;
 525
 526         while (hwnd)
 527         {
 528             if (!(wndPtr = WIN_GetPtr( hwnd )))
 529             {
 530                 ERR( "bad hwndTo = %p\n", hwnd );
 531                 return;
 532             }
 533             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 534             offset->x -= wndPtr->rectClient.left;
 535             offset->y -= wndPtr->rectClient.top;
 536             hwnd = wndPtr->parent;
 537             WIN_ReleasePtr( wndPtr );
 538         }
 539     }
 540     return;
 541
 542  other_process:  /* one of the parents may belong to another process, do it the hard way */
 543     offset->x = offset->y = 0;
 544     SERVER_START_REQ( get_windows_offset )
 545     {
 546         req->from = hwndFrom;
 547         req->to   = hwndTo;
 548         if (!wine_server_call( req ))
 549         {
 550             offset->x = reply->x;
 551             offset->y = reply->y;
 552         }
 553     }
 554     SERVER_END_REQ;
 555 }
 556
 557
 558 /*******************************************************************
 559  *              MapWindowPoints (USER.258)
 560  */
 561 void WINAPI MapWindowPoints16( HWND16 hwndFrom, HWND16 hwndTo,
 562                                LPPOINT16 lppt, UINT16 count )
 563 {
 564     POINT offset;
 565
 566     WINPOS_GetWinOffset( WIN_Handle32(hwndFrom), WIN_Handle32(hwndTo), &offset );
 567     while (count--)
 568     {
 569         lppt->x += offset.x;
 570         lppt->y += offset.y;
 571         lppt++;
 572     }
 573 }
 574
 575
 576 /*******************************************************************
 577  *              MapWindowPoints (USER32.@)
 578  */
 579 INT WINAPI MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, UINT count )
 580 {
 581     POINT offset;
 582
 583     WINPOS_GetWinOffset( hwndFrom, hwndTo, &offset );
 584     while (count--)
 585     {
 586         lppt->x += offset.x;
 587         lppt->y += offset.y;
 588         lppt++;
 589     }
 590     return MAKELONG( LOWORD(offset.x), LOWORD(offset.y) );
 591 }
 592
 593
 594 /***********************************************************************
 595  *              IsIconic (USER32.@)
 596  */
 597 BOOL WINAPI IsIconic(HWND hWnd)
 598 {
 599     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MINIMIZE) != 0;
 600 }
 601
 602
 603 /***********************************************************************
 604  *              IsZoomed (USER32.@)
 605  */
 606 BOOL WINAPI IsZoomed(HWND hWnd)
 607 {
 608     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MAXIMIZE) != 0;
 609 }
 610
 611
 612 /*******************************************************************
 613  *              AllowSetForegroundWindow (USER32.@)
 614  */
 615 BOOL WINAPI AllowSetForegroundWindow( DWORD procid )
 616 {
 617     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 618      * implemented, then fix this function. */
 619     return TRUE;
 620 }
 621
 622
 623 /*******************************************************************
 624  *              LockSetForegroundWindow (USER32.@)
 625  */
 626 BOOL WINAPI LockSetForegroundWindow( UINT lockcode )
 627 {
 628     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 629      * implemented, then fix this function. */
 630     return TRUE;
 631 }
 632
 633
 634 /***********************************************************************
 635  *              BringWindowToTop (USER32.@)
 636  */
 637 BOOL WINAPI BringWindowToTop( HWND hwnd )
 638 {
 639     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE );
 640 }
 641
 642
 643 /***********************************************************************
 644  *              MoveWindow (USER32.@)
 645  */
 646 BOOL WINAPI MoveWindow( HWND hwnd, INT x, INT y, INT cx, INT cy,
 647                             BOOL repaint )
 648 {
 649     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 650     if (!repaint) flags |= SWP_NOREDRAW;
 651     TRACE("%p %d,%d %dx%d %d\n", hwnd, x, y, cx, cy, repaint );
 652     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 653 }
 654
 655 /***********************************************************************
 656  *           WINPOS_InitInternalPos
 657  */
 658 static LPINTERNALPOS WINPOS_InitInternalPos( WND* wnd, POINT pt, const RECT *restoreRect )
 659 {
 660     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( wnd->hwndSelf,
 661                                                       atomInternalPos );
 662     if( !lpPos )
 663     {
 664         /* this happens when the window is minimized/maximized
 665          * for the first time (rectWindow is not adjusted yet) */
 666
 667         lpPos = HeapAlloc( GetProcessHeap(), 0, sizeof(INTERNALPOS) );
 668         if( !lpPos ) return NULL;
 669
 670         SetPropA( wnd->hwndSelf, atomInternalPos, (HANDLE)lpPos );
 671         lpPos->hwndIconTitle = 0; /* defer until needs to be shown */
 672         CONV_RECT32TO16( &wnd->rectWindow, &lpPos->rectNormal );
 673         *(UINT*)&lpPos->ptIconPos = *(UINT*)&lpPos->ptMaxPos = 0xFFFFFFFF;
 674     }
 675
 676     if( wnd->dwStyle & WS_MINIMIZE )
 677         CONV_POINT32TO16( &pt, &lpPos->ptIconPos );
 678     else if( wnd->dwStyle & WS_MAXIMIZE )
 679         CONV_POINT32TO16( &pt, &lpPos->ptMaxPos );
 680     else if( restoreRect )
 681         CONV_RECT32TO16( restoreRect, &lpPos->rectNormal );
 682
 683     return lpPos;
 684 }
 685
 686 /***********************************************************************
 687  *           WINPOS_RedrawIconTitle
 688  */
 689 BOOL WINPOS_RedrawIconTitle( HWND hWnd )
 690 {
 691     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hWnd, atomInternalPos );
 692     if( lpPos )
 693     {
 694         if( lpPos->hwndIconTitle )
 695         {
 696             SendMessageA( lpPos->hwndIconTitle, WM_SHOWWINDOW, TRUE, 0);
 697             InvalidateRect( lpPos->hwndIconTitle, NULL, TRUE );
 698             return TRUE;
 699         }
 700     }
 701     return FALSE;
 702 }
 703
 704 /***********************************************************************
 705  *           WINPOS_ShowIconTitle
 706  */
 707 BOOL WINPOS_ShowIconTitle( HWND hwnd, BOOL bShow )
 708 {
 709     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 710
 711     if( lpPos && !(GetWindowLongA( hwnd, GWL_EXSTYLE) & WS_EX_MANAGED))
 712     {
 713         HWND title = lpPos->hwndIconTitle;
 714
 715         TRACE("%p %i\n", hwnd, (bShow != 0) );
 716
 717         if( !title )
 718             lpPos->hwndIconTitle = title = ICONTITLE_Create( hwnd );
 719         if( bShow )
 720         {
 721             if (!IsWindowVisible(title))
 722             {
 723                 SendMessageA( title, WM_SHOWWINDOW, TRUE, 0 );
 724                 SetWindowPos( title, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
 725                               SWP_NOACTIVATE | SWP_NOZORDER | SWP_SHOWWINDOW );
 726             }
 727         }
 728         else ShowWindow( title, SW_HIDE );
 729     }
 730     return FALSE;
 731 }
 732
 733 /*******************************************************************
 734  *           WINPOS_GetMinMaxInfo
 735  *
 736  * Get the minimized and maximized information for a window.
 737  */
 738 void WINPOS_GetMinMaxInfo( HWND hwnd, POINT *maxSize, POINT *maxPos,
 739                            POINT *minTrack, POINT *maxTrack )
 740 {
 741     LPINTERNALPOS lpPos;
 742     MINMAXINFO MinMax;
 743     INT xinc, yinc;
 744     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
 745     LONG exstyle = GetWindowLongA( hwnd, GWL_EXSTYLE );
 746     RECT rc;
 747
 748     /* Compute default values */
 749
 750     GetWindowRect(hwnd, &rc);
 751     MinMax.ptReserved.x = rc.left;
 752     MinMax.ptReserved.y = rc.top;
 753
 754     if (style & WS_CHILD)
 755     {
 756         GetClientRect(GetParent(hwnd), &rc);
 757         MinMax.ptMaxSize.x = rc.right;
 758         MinMax.ptMaxSize.y = rc.bottom;
 759     }
 760     else
 761     {
 762         MinMax.ptMaxSize.x = GetSystemMetrics(SM_CXSCREEN);
 763         MinMax.ptMaxSize.y = GetSystemMetrics(SM_CYSCREEN);
 764     }
 765     MinMax.ptMinTrackSize.x = GetSystemMetrics(SM_CXMINTRACK);
 766     MinMax.ptMinTrackSize.y = GetSystemMetrics(SM_CYMINTRACK);
 767     MinMax.ptMaxTrackSize.x = GetSystemMetrics(SM_CXSCREEN);
 768     MinMax.ptMaxTrackSize.y = GetSystemMetrics(SM_CYSCREEN);
 769
 770     if (HAS_DLGFRAME( style, exstyle ))
 771     {
 772         xinc = GetSystemMetrics(SM_CXDLGFRAME);
 773         yinc = GetSystemMetrics(SM_CYDLGFRAME);
 774     }
 775     else
 776     {
 777         xinc = yinc = 0;
 778         if (HAS_THICKFRAME(style))
 779         {
 780             xinc += GetSystemMetrics(SM_CXFRAME);
 781             yinc += GetSystemMetrics(SM_CYFRAME);
 782         }
 783         if (style & WS_BORDER)
 784         {
 785             xinc += GetSystemMetrics(SM_CXBORDER);
 786             yinc += GetSystemMetrics(SM_CYBORDER);
 787         }
 788     }
 789     MinMax.ptMaxSize.x += 2 * xinc;
 790     MinMax.ptMaxSize.y += 2 * yinc;
 791
 792     lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 793     if( lpPos && !EMPTYPOINT(lpPos->ptMaxPos) )
 794         CONV_POINT16TO32( &lpPos->ptMaxPos, &MinMax.ptMaxPosition );
 795     else
 796     {
 797         MinMax.ptMaxPosition.x = -xinc;
 798         MinMax.ptMaxPosition.y = -yinc;
 799     }
 800
 801     SendMessageA( hwnd, WM_GETMINMAXINFO, 0, (LPARAM)&MinMax );
 802
 803       /* Some sanity checks */
 804
 805     TRACE("%ld %ld / %ld %ld / %ld %ld / %ld %ld\n",
 806                       MinMax.ptMaxSize.x, MinMax.ptMaxSize.y,
 807                       MinMax.ptMaxPosition.x, MinMax.ptMaxPosition.y,
 808                       MinMax.ptMaxTrackSize.x, MinMax.ptMaxTrackSize.y,
 809                       MinMax.ptMinTrackSize.x, MinMax.ptMinTrackSize.y);
 810     MinMax.ptMaxTrackSize.x = max( MinMax.ptMaxTrackSize.x,
 811                                    MinMax.ptMinTrackSize.x );
 812     MinMax.ptMaxTrackSize.y = max( MinMax.ptMaxTrackSize.y,
 813                                    MinMax.ptMinTrackSize.y );
 814
 815     if (maxSize) *maxSize = MinMax.ptMaxSize;
 816     if (maxPos) *maxPos = MinMax.ptMaxPosition;
 817     if (minTrack) *minTrack = MinMax.ptMinTrackSize;
 818     if (maxTrack) *maxTrack = MinMax.ptMaxTrackSize;
 819 }
 820
 821 /***********************************************************************
 822  *              ShowWindowAsync (USER32.@)
 823  *
 824  * doesn't wait; returns immediately.
 825  * used by threads to toggle windows in other (possibly hanging) threads
 826  */
 827 BOOL WINAPI ShowWindowAsync( HWND hwnd, INT cmd )
 828 {
 829     HWND full_handle;
 830
 831     if (is_broadcast(hwnd))
 832     {
 833         SetLastError( ERROR_INVALID_PARAMETER );
 834         return FALSE;
 835     }
 836
 837     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 838         return USER_Driver.pShowWindow( full_handle, cmd );
 839     return SendNotifyMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 840 }
 841
 842
 843 /***********************************************************************
 844  *              ShowWindow (USER32.@)
 845  */
 846 BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
 847 {
 848     HWND full_handle;
 849
 850     if (is_broadcast(hwnd))
 851     {
 852         SetLastError( ERROR_INVALID_PARAMETER );
 853         return FALSE;
 854     }
 855     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 856     {
 857         if (USER_Driver.pShowWindow)
 858             return USER_Driver.pShowWindow( full_handle, cmd );
 859         return FALSE;
 860     }
 861     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 862 }
 863
 864
 865 /***********************************************************************
 866  *              GetInternalWindowPos (USER32.@)
 867  */
 868 UINT WINAPI GetInternalWindowPos( HWND hwnd, LPRECT rectWnd,
 869                                       LPPOINT ptIcon )
 870 {
 871     WINDOWPLACEMENT wndpl;
 872     if (GetWindowPlacement( hwnd, &wndpl ))
 873     {
 874         if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 875         if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 876         return wndpl.showCmd;
 877     }
 878     return 0;
 879 }
 880
 881
 882 /***********************************************************************
 883  *              GetWindowPlacement (USER32.@)
 884  *
 885  * Win95:
 886  * Fails if wndpl->length of Win95 (!) apps is invalid.
 887  */
 888 BOOL WINAPI GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 889 {
 890     WND *pWnd = WIN_FindWndPtr( hwnd );
 891     LPINTERNALPOS lpPos;
 892
 893     if(!pWnd ) return FALSE;
 894
 895     lpPos = WINPOS_InitInternalPos( pWnd, *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 896     wndpl->length  = sizeof(*wndpl);
 897     if( pWnd->dwStyle & WS_MINIMIZE )
 898         wndpl->showCmd = SW_SHOWMINIMIZED;
 899     else
 900         wndpl->showCmd = ( pWnd->dwStyle & WS_MAXIMIZE ) ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL ;
 901     if( pWnd->flags & WIN_RESTORE_MAX )
 902         wndpl->flags = WPF_RESTORETOMAXIMIZED;
 903     else
 904         wndpl->flags = 0;
 905     CONV_POINT16TO32( &lpPos->ptIconPos, &wndpl->ptMinPosition );
 906     CONV_POINT16TO32( &lpPos->ptMaxPos, &wndpl->ptMaxPosition );
 907     CONV_RECT16TO32( &lpPos->rectNormal, &wndpl->rcNormalPosition );
 908     WIN_ReleaseWndPtr(pWnd);
 909     return TRUE;
 910 }
 911
 912
 913 /***********************************************************************
 914  *           WINPOS_SetPlacement
 915  */
 916 static BOOL WINPOS_SetPlacement( HWND hwnd, const WINDOWPLACEMENT *wndpl, UINT flags )
 917 {
 918     WND *pWnd = WIN_FindWndPtr( hwnd );
 919     if( pWnd )
 920     {
 921         LPINTERNALPOS lpPos = (LPINTERNALPOS)WINPOS_InitInternalPos( pWnd,
 922                              *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 923
 924         if( flags & PLACE_MIN ) CONV_POINT32TO16( &wndpl->ptMinPosition, &lpPos->ptIconPos );
 925         if( flags & PLACE_MAX ) CONV_POINT32TO16( &wndpl->ptMaxPosition, &lpPos->ptMaxPos );
 926         if( flags & PLACE_RECT) CONV_RECT32TO16( &wndpl->rcNormalPosition, &lpPos->rectNormal );
 927
 928         if( pWnd->dwStyle & WS_MINIMIZE )
 929         {
 930             WINPOS_ShowIconTitle( pWnd->hwndSelf, FALSE );
 931             if( wndpl->flags & WPF_SETMINPOSITION && !EMPTYPOINT(lpPos->ptIconPos))
 932                 SetWindowPos( hwnd, 0, lpPos->ptIconPos.x, lpPos->ptIconPos.y,
 933                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 934         }
 935         else if( pWnd->dwStyle & WS_MAXIMIZE )
 936         {
 937             if( !EMPTYPOINT(lpPos->ptMaxPos) )
 938                 SetWindowPos( hwnd, 0, lpPos->ptMaxPos.x, lpPos->ptMaxPos.y,
 939                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 940         }
 941         else if( flags & PLACE_RECT )
 942                 SetWindowPos( hwnd, 0, lpPos->rectNormal.left, lpPos->rectNormal.top,
 943                                 lpPos->rectNormal.right - lpPos->rectNormal.left,
 944                                 lpPos->rectNormal.bottom - lpPos->rectNormal.top,
 945                                 SWP_NOZORDER | SWP_NOACTIVATE );
 946
 947         ShowWindow( hwnd, wndpl->showCmd );
 948         if( IsWindow(hwnd) && pWnd->dwStyle & WS_MINIMIZE )
 949         {
 950             if( pWnd->dwStyle & WS_VISIBLE ) WINPOS_ShowIconTitle( pWnd->hwndSelf, TRUE );
 951
 952             /* SDK: ...valid only the next time... */
 953             if( wndpl->flags & WPF_RESTORETOMAXIMIZED ) pWnd->flags |= WIN_RESTORE_MAX;
 954         }
 955         WIN_ReleaseWndPtr(pWnd);
 956         return TRUE;
 957     }
 958     return FALSE;
 959 }
 960
 961
 962 /***********************************************************************
 963  *              SetWindowPlacement (USER32.@)
 964  *
 965  * Win95:
 966  * Fails if wndpl->length of Win95 (!) apps is invalid.
 967  */
 968 BOOL WINAPI SetWindowPlacement( HWND hwnd, const WINDOWPLACEMENT *wpl )
 969 {
 970     if (!wpl) return FALSE;
 971     return WINPOS_SetPlacement( hwnd, wpl, PLACE_MIN | PLACE_MAX | PLACE_RECT );
 972 }
 973
 974
 975 /***********************************************************************
 976  *              AnimateWindow (USER32.@)
 977  *              Shows/Hides a window with an animation
 978  *              NO ANIMATION YET
 979  */
 980 BOOL WINAPI AnimateWindow(HWND hwnd, DWORD dwTime, DWORD dwFlags)
 981 {
 982         FIXME("partial stub\n");
 983
 984         /* If trying to show/hide and it's already   *
 985          * shown/hidden or invalid window, fail with *
 986          * invalid parameter                         */
 987         if(!IsWindow(hwnd) ||
 988            (IsWindowVisible(hwnd) && !(dwFlags & AW_HIDE)) ||
 989            (!IsWindowVisible(hwnd) && (dwFlags & AW_HIDE)))
 990         {
 991                 SetLastError(ERROR_INVALID_PARAMETER);
 992                 return FALSE;
 993         }
 994
 995         ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
 996
 997         return TRUE;
 998 }
 999
1000 /***********************************************************************
1001  *              SetInternalWindowPos (USER32.@)
1002  */
1003 void WINAPI SetInternalWindowPos( HWND hwnd, UINT showCmd,
1004                                     LPRECT rect, LPPOINT pt )
1005 {
1006     if( IsWindow(hwnd) )
1007     {
1008         WINDOWPLACEMENT wndpl;
1009         UINT flags;
1010
1011         wndpl.length  = sizeof(wndpl);
1012         wndpl.showCmd = showCmd;
1013         wndpl.flags = flags = 0;
1014
1015         if( pt )
1016         {
1017             flags |= PLACE_MIN;
1018             wndpl.flags |= WPF_SETMINPOSITION;
1019             wndpl.ptMinPosition = *pt;
1020         }
1021         if( rect )
1022         {
1023             flags |= PLACE_RECT;
1024             wndpl.rcNormalPosition = *rect;
1025         }
1026         WINPOS_SetPlacement( hwnd, &wndpl, flags );
1027     }
1028 }
1029
1030
1031 /*******************************************************************
1032  *         can_activate_window
1033  *
1034  * Check if we can activate the specified window.
1035  */
1036 static BOOL can_activate_window( HWND hwnd )
1037 {
1038     LONG style;
1039
1040     if (!hwnd) return FALSE;
1041     style = GetWindowLongW( hwnd, GWL_STYLE );
1042     if (!(style & WS_VISIBLE)) return FALSE;
1043     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
1044     return !(style & WS_DISABLED);
1045 }
1046
1047
1048 /*******************************************************************
1049  *         WINPOS_ActivateOtherWindow
1050  *
1051  *  Activates window other than pWnd.
1052  */
1053 void WINPOS_ActivateOtherWindow(HWND hwnd)
1054 {
1055     HWND hwndTo, fg;
1056
1057     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
1058     {
1059         hwndTo = GetAncestor( hwndTo, GA_ROOT );
1060         if (can_activate_window( hwndTo )) goto done;
1061     }
1062
1063     hwndTo = hwnd;
1064     for (;;)
1065     {
1066         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
1067         if (can_activate_window( hwndTo )) break;
1068     }
1069
1070  done:
1071     fg = GetForegroundWindow();
1072     TRACE("win = %p fg = %p\n", hwndTo, fg);
1073     if (!fg || (hwnd == fg))
1074     {
1075         if (SetForegroundWindow( hwndTo )) return;
1076     }
1077     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
1078 }
1079
1080
1081 /***********************************************************************
1082  *           WINPOS_HandleWindowPosChanging16
1083  *
1084  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1085  */
1086 LONG WINPOS_HandleWindowPosChanging16( HWND hwnd, WINDOWPOS16 *winpos )
1087 {
1088     POINT maxSize, minTrack;
1089     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
1090
1091     if (winpos->flags & SWP_NOSIZE) return 0;
1092     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1093     {
1094         WINPOS_GetMinMaxInfo( hwnd, &maxSize, NULL, &minTrack, NULL );
1095         if (maxSize.x < winpos->cx) winpos->cx = maxSize.x;
1096         if (maxSize.y < winpos->cy) winpos->cy = maxSize.y;
1097         if (!(style & WS_MINIMIZE))
1098         {
1099             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1100             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1101         }
1102     }
1103     return 0;
1104 }
1105
1106
1107 /***********************************************************************
1108  *           WINPOS_HandleWindowPosChanging
1109  *
1110  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1111  */
1112 LONG WINPOS_HandleWindowPosChanging( HWND hwnd, WINDOWPOS *winpos )
1113 {
1114     POINT maxSize, minTrack;
1115     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
1116
1117     if (winpos->flags & SWP_NOSIZE) return 0;
1118     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1119     {
1120         WINPOS_GetMinMaxInfo( hwnd, &maxSize, NULL, &minTrack, NULL );
1121         winpos->cx = min( winpos->cx, maxSize.x );
1122         winpos->cy = min( winpos->cy, maxSize.y );
1123         if (!(style & WS_MINIMIZE))
1124         {
1125             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1126             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1127         }
1128     }
1129     return 0;
1130 }
1131
1132
1133 /***********************************************************************
1134  *           dump_winpos_flags
1135  */
1136 static void dump_winpos_flags(UINT flags)
1137 {
1138     TRACE("flags:");
1139     if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
1140     if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
1141     if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
1142     if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
1143     if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
1144     if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
1145     if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
1146     if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
1147     if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
1148     if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
1149     if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
1150     if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
1151     if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
1152
1153 #define DUMPED_FLAGS \
1154     (SWP_NOSIZE | \
1155     SWP_NOMOVE | \
1156     SWP_NOZORDER | \
1157     SWP_NOREDRAW | \
1158     SWP_NOACTIVATE | \
1159     SWP_FRAMECHANGED | \
1160     SWP_SHOWWINDOW | \
1161     SWP_HIDEWINDOW | \
1162     SWP_NOCOPYBITS | \
1163     SWP_NOOWNERZORDER | \
1164     SWP_NOSENDCHANGING | \
1165     SWP_DEFERERASE | \
1166     SWP_ASYNCWINDOWPOS)
1167
1168     if(flags & ~DUMPED_FLAGS) TRACE(" %08x", flags & ~DUMPED_FLAGS);
1169     TRACE("\n");
1170 #undef DUMPED_FLAGS
1171 }
1172
1173 /***********************************************************************
1174  *              SetWindowPos (USER32.@)
1175  */
1176 BOOL WINAPI SetWindowPos( HWND hwnd, HWND hwndInsertAfter,
1177                           INT x, INT y, INT cx, INT cy, UINT flags )
1178 {
1179     WINDOWPOS winpos;
1180
1181     TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1182           hwnd, hwndInsertAfter, x, y, cx, cy, flags);
1183     if(TRACE_ON(win)) dump_winpos_flags(flags);
1184
1185     if (is_broadcast(hwnd))
1186     {
1187         SetLastError( ERROR_INVALID_PARAMETER );
1188         return FALSE;
1189     }
1190
1191     winpos.hwnd = WIN_GetFullHandle(hwnd);
1192     winpos.hwndInsertAfter = WIN_GetFullHandle(hwndInsertAfter);
1193     winpos.x = x;
1194     winpos.y = y;
1195     winpos.cx = cx;
1196     winpos.cy = cy;
1197     winpos.flags = flags;
1198     if (WIN_IsCurrentThread( hwnd )) return USER_Driver.pSetWindowPos( &winpos );
1199     return SendMessageW( winpos.hwnd, WM_WINE_SETWINDOWPOS, 0, (LPARAM)&winpos );
1200 }
1201
1202
1203 /***********************************************************************
1204  *              BeginDeferWindowPos (USER32.@)
1205  */
1206 HDWP WINAPI BeginDeferWindowPos( INT count )
1207 {
1208     HDWP handle;
1209     DWP *pDWP;
1210
1211     TRACE("%d\n", count);
1212
1213     if (count < 0)
1214     {
1215         SetLastError(ERROR_INVALID_PARAMETER);
1216         return 0;
1217     }
1218     /* Windows allows zero count, in which case it allocates context for 8 moves */
1219     if (count == 0) count = 8;
1220
1221     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1222     if (!handle) return 0;
1223     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1224     pDWP->actualCount    = 0;
1225     pDWP->suggestedCount = count;
1226     pDWP->valid          = TRUE;
1227     pDWP->wMagic         = DWP_MAGIC;
1228     pDWP->hwndParent     = 0;
1229
1230     TRACE("returning hdwp %p\n", handle);
1231     return handle;
1232 }
1233
1234
1235 /***********************************************************************
1236  *              DeferWindowPos (USER32.@)
1237  */
1238 HDWP WINAPI DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter,
1239                                 INT x, INT y, INT cx, INT cy,
1240                                 UINT flags )
1241 {
1242     DWP *pDWP;
1243     int i;
1244     HDWP newhdwp = hdwp,retvalue;
1245
1246     TRACE("hdwp %p, hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1247           hdwp, hwnd, hwndAfter, x, y, cx, cy, flags);
1248
1249     hwnd = WIN_GetFullHandle( hwnd );
1250     if (hwnd == GetDesktopWindow()) return 0;
1251
1252     if (!(pDWP = USER_HEAP_LIN_ADDR( hdwp ))) return 0;
1253
1254     USER_Lock();
1255
1256     for (i = 0; i < pDWP->actualCount; i++)
1257     {
1258         if (pDWP->winPos[i].hwnd == hwnd)
1259         {
1260               /* Merge with the other changes */
1261             if (!(flags & SWP_NOZORDER))
1262             {
1263                 pDWP->winPos[i].hwndInsertAfter = WIN_GetFullHandle(hwndAfter);
1264             }
1265             if (!(flags & SWP_NOMOVE))
1266             {
1267                 pDWP->winPos[i].x = x;
1268                 pDWP->winPos[i].y = y;
1269             }
1270             if (!(flags & SWP_NOSIZE))
1271             {
1272                 pDWP->winPos[i].cx = cx;
1273                 pDWP->winPos[i].cy = cy;
1274             }
1275             pDWP->winPos[i].flags &= flags | ~(SWP_NOSIZE | SWP_NOMOVE |
1276                                                SWP_NOZORDER | SWP_NOREDRAW |
1277                                                SWP_NOACTIVATE | SWP_NOCOPYBITS|
1278                                                SWP_NOOWNERZORDER);
1279             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1280                                               SWP_FRAMECHANGED);
1281             retvalue = hdwp;
1282             goto END;
1283         }
1284     }
1285     if (pDWP->actualCount >= pDWP->suggestedCount)
1286     {
1287         newhdwp = USER_HEAP_REALLOC( hdwp,
1288                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1289         if (!newhdwp)
1290         {
1291             retvalue = 0;
1292             goto END;
1293         }
1294         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1295         pDWP->suggestedCount++;
1296     }
1297     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1298     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1299     pDWP->winPos[pDWP->actualCount].x = x;
1300     pDWP->winPos[pDWP->actualCount].y = y;
1301     pDWP->winPos[pDWP->actualCount].cx = cx;
1302     pDWP->winPos[pDWP->actualCount].cy = cy;
1303     pDWP->winPos[pDWP->actualCount].flags = flags;
1304     pDWP->actualCount++;
1305     retvalue = newhdwp;
1306 END:
1307     USER_Unlock();
1308     return retvalue;
1309 }
1310
1311
1312 /***********************************************************************
1313  *              EndDeferWindowPos (USER32.@)
1314  */
1315 BOOL WINAPI EndDeferWindowPos( HDWP hdwp )
1316 {
1317     DWP *pDWP;
1318     WINDOWPOS *winpos;
1319     BOOL res = TRUE;
1320     int i;
1321
1322     TRACE("%p\n", hdwp);
1323
1324     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1325     if (!pDWP) return FALSE;
1326     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1327     {
1328         if (!(res = USER_Driver.pSetWindowPos( winpos ))) break;
1329     }
1330     USER_HEAP_FREE( hdwp );
1331     return res;
1332 }
1333
1334
1335 /***********************************************************************
1336  *              TileChildWindows (USER.199)
1337  */
1338 void WINAPI TileChildWindows16( HWND16 parent, WORD action )
1339 {
1340     FIXME("(%04x, %d): stub\n", parent, action);
1341 }
1342
1343 /***********************************************************************
1344  *              CascadeChildWindows (USER.198)
1345  */
1346 void WINAPI CascadeChildWindows16( HWND16 parent, WORD action )
1347 {
1348     FIXME("(%04x, %d): stub\n", parent, action);
1349 }