windows/winpos.c

   1 /*
   2  * Window position related functions.
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1995, 1996, 1999 Alex Korobka
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include "winerror.h"
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "winerror.h"
  32 #include "ntstatus.h"
  33 #include "wine/winuser16.h"
  34 #include "wine/server.h"
  35 #include "controls.h"
  36 #include "user_private.h"
  37 #include "win.h"
  38 #include "message.h"
  39 #include "winpos.h"
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(win);
  43
  44 #define HAS_DLGFRAME(style,exStyle) \
  45     (((exStyle) & WS_EX_DLGMODALFRAME) || \
  46      (((style) & WS_DLGFRAME) && !((style) & WS_BORDER)))
  47
  48 #define HAS_THICKFRAME(style) \
  49     (((style) & WS_THICKFRAME) && \
  50      !(((style) & (WS_DLGFRAME|WS_BORDER)) == WS_DLGFRAME))
  51
  52 #define EMPTYPOINT(pt)          ((*(LONG*)&(pt)) == -1)
  53
  54 #define PLACE_MIN               0x0001
  55 #define PLACE_MAX               0x0002
  56 #define PLACE_RECT              0x0004
  57
  58
  59 #define DWP_MAGIC  ((INT)('W' | ('P' << 8) | ('O' << 16) | ('S' << 24)))
  60
  61 typedef struct
  62 {
  63     INT       actualCount;
  64     INT       suggestedCount;
  65     BOOL      valid;
  66     INT       wMagic;
  67     HWND      hwndParent;
  68     WINDOWPOS winPos[1];
  69 } DWP;
  70
  71 typedef struct
  72 {
  73     RECT16   rectNormal;
  74     POINT16  ptIconPos;
  75     POINT16  ptMaxPos;
  76     HWND     hwndIconTitle;
  77 } INTERNALPOS, *LPINTERNALPOS;
  78
  79 /* ----- internal variables ----- */
  80
  81 static LPCSTR atomInternalPos;
  82
  83
  84 /***********************************************************************
  85  *           WINPOS_CreateInternalPosAtom
  86  */
  87 BOOL WINPOS_CreateInternalPosAtom()
  88 {
  89     LPCSTR str = "SysIP";
  90     atomInternalPos = (LPCSTR)(DWORD)GlobalAddAtomA(str);
  91     return (atomInternalPos) ? TRUE : FALSE;
  92 }
  93
  94 /***********************************************************************
  95  *           WINPOS_CheckInternalPos
  96  *
  97  * Called when a window is destroyed.
  98  */
  99 void WINPOS_CheckInternalPos( HWND hwnd )
 100 {
 101     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( hwnd, atomInternalPos );
 102
 103     if( lpPos )
 104     {
 105         if( IsWindow(lpPos->hwndIconTitle) )
 106             DestroyWindow( lpPos->hwndIconTitle );
 107         HeapFree( GetProcessHeap(), 0, lpPos );
 108     }
 109 }
 110
 111 /***********************************************************************
 112  *              ArrangeIconicWindows (USER32.@)
 113  */
 114 UINT WINAPI ArrangeIconicWindows( HWND parent )
 115 {
 116     RECT rectParent;
 117     HWND hwndChild;
 118     INT x, y, xspacing, yspacing;
 119
 120     GetClientRect( parent, &rectParent );
 121     x = rectParent.left;
 122     y = rectParent.bottom;
 123     xspacing = GetSystemMetrics(SM_CXICONSPACING);
 124     yspacing = GetSystemMetrics(SM_CYICONSPACING);
 125
 126     hwndChild = GetWindow( parent, GW_CHILD );
 127     while (hwndChild)
 128     {
 129         if( IsIconic( hwndChild ) )
 130         {
 131             WINPOS_ShowIconTitle( hwndChild, FALSE );
 132
 133             SetWindowPos( hwndChild, 0, x + (xspacing - GetSystemMetrics(SM_CXICON)) / 2,
 134                             y - yspacing - GetSystemMetrics(SM_CYICON)/2, 0, 0,
 135                             SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 136             if( IsWindow(hwndChild) )
 137                 WINPOS_ShowIconTitle(hwndChild , TRUE );
 138
 139             if (x <= rectParent.right - xspacing) x += xspacing;
 140             else
 141             {
 142                 x = rectParent.left;
 143                 y -= yspacing;
 144             }
 145         }
 146         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 147     }
 148     return yspacing;
 149 }
 150
 151
 152 /***********************************************************************
 153  *              SwitchToThisWindow (USER32.@)
 154  */
 155 void WINAPI SwitchToThisWindow( HWND hwnd, BOOL restore )
 156 {
 157     ShowWindow( hwnd, restore ? SW_RESTORE : SW_SHOWMINIMIZED );
 158 }
 159
 160
 161 /***********************************************************************
 162  *              GetWindowRect (USER32.@)
 163  */
 164 BOOL WINAPI GetWindowRect( HWND hwnd, LPRECT rect )
 165 {
 166     BOOL ret = WIN_GetRectangles( hwnd, rect, NULL );
 167     if (ret)
 168     {
 169         MapWindowPoints( GetAncestor( hwnd, GA_PARENT ), 0, (POINT *)rect, 2 );
 170         TRACE( "hwnd %p (%ld,%ld)-(%ld,%ld)\n",
 171                hwnd, rect->left, rect->top, rect->right, rect->bottom);
 172     }
 173     return ret;
 174 }
 175
 176
 177 /***********************************************************************
 178  *              GetWindowRgn (USER32.@)
 179  */
 180 int WINAPI GetWindowRgn ( HWND hwnd, HRGN hrgn )
 181 {
 182     int nRet = ERROR;
 183     NTSTATUS status;
 184     HRGN win_rgn = 0;
 185     RGNDATA *data;
 186     size_t size = 256;
 187
 188     do
 189     {
 190         if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
 191         {
 192             SetLastError( ERROR_OUTOFMEMORY );
 193             return ERROR;
 194         }
 195         SERVER_START_REQ( get_window_region )
 196         {
 197             req->window = hwnd;
 198             wine_server_set_reply( req, data->Buffer, size );
 199             if (!(status = wine_server_call( req )))
 200             {
 201                 size_t reply_size = wine_server_reply_size( reply );
 202                 if (reply_size)
 203                 {
 204                     data->rdh.dwSize   = sizeof(data->rdh);
 205                     data->rdh.iType    = RDH_RECTANGLES;
 206                     data->rdh.nCount   = reply_size / sizeof(RECT);
 207                     data->rdh.nRgnSize = reply_size;
 208                     win_rgn = ExtCreateRegion( NULL, size, data );
 209                 }
 210             }
 211             else size = reply->total_size;
 212         }
 213         SERVER_END_REQ;
 214         HeapFree( GetProcessHeap(), 0, data );
 215     } while (status == STATUS_BUFFER_OVERFLOW);
 216
 217     if (status) SetLastError( RtlNtStatusToDosError(status) );
 218     else if (win_rgn)
 219     {
 220         nRet = CombineRgn( hrgn, win_rgn, 0, RGN_COPY );
 221         DeleteObject( win_rgn );
 222     }
 223     return nRet;
 224 }
 225
 226
 227 /***********************************************************************
 228  *              SetWindowRgn (USER32.@)
 229  */
 230 int WINAPI SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL bRedraw )
 231 {
 232     static const RECT empty_rect;
 233     BOOL ret;
 234
 235     if (hrgn)
 236     {
 237         RGNDATA *data;
 238         DWORD size;
 239
 240         if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
 241         if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 242         if (!GetRegionData( hrgn, size, data ))
 243         {
 244             HeapFree( GetProcessHeap(), 0, data );
 245             return FALSE;
 246         }
 247         SERVER_START_REQ( set_window_region )
 248         {
 249             req->window = hwnd;
 250             if (data->rdh.nCount)
 251                 wine_server_add_data( req, data->Buffer, data->rdh.nCount * sizeof(RECT) );
 252             else
 253                 wine_server_add_data( req, &empty_rect, sizeof(empty_rect) );
 254             ret = !wine_server_call_err( req );
 255         }
 256         SERVER_END_REQ;
 257     }
 258     else  /* clear existing region */
 259     {
 260         SERVER_START_REQ( set_window_region )
 261         {
 262             req->window = hwnd;
 263             ret = !wine_server_call_err( req );
 264         }
 265         SERVER_END_REQ;
 266     }
 267
 268     if (ret && USER_Driver.pSetWindowRgn)
 269         ret = USER_Driver.pSetWindowRgn( hwnd, hrgn, bRedraw );
 270
 271     if (ret && bRedraw) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_INVALIDATE | RDW_ERASE );
 272     return ret;
 273 }
 274
 275
 276 /***********************************************************************
 277  *              GetClientRect (USER32.@)
 278  */
 279 BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
 280 {
 281     BOOL ret;
 282
 283     if ((ret = WIN_GetRectangles( hwnd, NULL, rect )))
 284     {
 285         rect->right -= rect->left;
 286         rect->bottom -= rect->top;
 287         rect->left = rect->top = 0;
 288     }
 289     return ret;
 290 }
 291
 292
 293 /*******************************************************************
 294  *              ClientToScreen (USER32.@)
 295  */
 296 BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
 297 {
 298     MapWindowPoints( hwnd, 0, lppnt, 1 );
 299     return TRUE;
 300 }
 301
 302
 303 /*******************************************************************
 304  *              ScreenToClient (USER32.@)
 305  */
 306 BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
 307 {
 308     MapWindowPoints( 0, hwnd, lppnt, 1 );
 309     return TRUE;
 310 }
 311
 312
 313 /***********************************************************************
 314  *           list_children_from_point
 315  *
 316  * Get the list of children that can contain point from the server.
 317  * Point is in screen coordinates.
 318  * Returned list must be freed by caller.
 319  */
 320 static HWND *list_children_from_point( HWND hwnd, POINT pt )
 321 {
 322     HWND *list;
 323     int size = 32;
 324
 325     for (;;)
 326     {
 327         int count = 0;
 328
 329         if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) break;
 330
 331         SERVER_START_REQ( get_window_children_from_point )
 332         {
 333             req->parent = hwnd;
 334             req->x = pt.x;
 335             req->y = pt.y;
 336             wine_server_set_reply( req, list, (size-1) * sizeof(HWND) );
 337             if (!wine_server_call( req )) count = reply->count;
 338         }
 339         SERVER_END_REQ;
 340         if (count && count < size)
 341         {
 342             list[count] = 0;
 343             return list;
 344         }
 345         HeapFree( GetProcessHeap(), 0, list );
 346         if (!count) break;
 347         size = count + 1;  /* restart with a large enough buffer */
 348     }
 349     return NULL;
 350 }
 351
 352
 353 /***********************************************************************
 354  *           WINPOS_WindowFromPoint
 355  *
 356  * Find the window and hittest for a given point.
 357  */
 358 HWND WINPOS_WindowFromPoint( HWND hwndScope, POINT pt, INT *hittest )
 359 {
 360     int i, res;
 361     HWND ret, *list;
 362
 363     if (!hwndScope) hwndScope = GetDesktopWindow();
 364
 365     *hittest = HTNOWHERE;
 366
 367     if (!(list = list_children_from_point( hwndScope, pt ))) return 0;
 368
 369     /* now determine the hittest */
 370
 371     for (i = 0; list[i]; i++)
 372     {
 373         LONG style = GetWindowLongW( list[i], GWL_STYLE );
 374
 375         /* If window is minimized or disabled, return at once */
 376         if (style & WS_MINIMIZE)
 377         {
 378             *hittest = HTCAPTION;
 379             break;
 380         }
 381         if (style & WS_DISABLED)
 382         {
 383             *hittest = HTERROR;
 384             break;
 385         }
 386         /* Send WM_NCCHITTEST (if same thread) */
 387         if (!WIN_IsCurrentThread( list[i] ))
 388         {
 389             *hittest = HTCLIENT;
 390             break;
 391         }
 392         res = SendMessageA( list[i], WM_NCHITTEST, 0, MAKELONG(pt.x,pt.y) );
 393         if (res != HTTRANSPARENT)
 394         {
 395             *hittest = res;  /* Found the window */
 396             break;
 397         }
 398         /* continue search with next window in z-order */
 399     }
 400     ret = list[i];
 401     HeapFree( GetProcessHeap(), 0, list );
 402     TRACE( "scope %p (%ld,%ld) returning %p\n", hwndScope, pt.x, pt.y, ret );
 403     return ret;
 404 }
 405
 406
 407 /*******************************************************************
 408  *              WindowFromPoint (USER32.@)
 409  */
 410 HWND WINAPI WindowFromPoint( POINT pt )
 411 {
 412     INT hittest;
 413     return WINPOS_WindowFromPoint( 0, pt, &hittest );
 414 }
 415
 416
 417 /*******************************************************************
 418  *              ChildWindowFromPoint (USER32.@)
 419  */
 420 HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
 421 {
 422     return ChildWindowFromPointEx( hwndParent, pt, CWP_ALL );
 423 }
 424
 425 /*******************************************************************
 426  *              ChildWindowFromPointEx (USER32.@)
 427  */
 428 HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
 429 {
 430     /* pt is in the client coordinates */
 431     HWND *list;
 432     int i;
 433     RECT rect;
 434     HWND retvalue;
 435
 436     GetClientRect( hwndParent, &rect );
 437     if (!PtInRect( &rect, pt )) return 0;
 438     if (!(list = WIN_ListChildren( hwndParent ))) return 0;
 439
 440     for (i = 0; list[i]; i++)
 441     {
 442         if (!WIN_GetRectangles( list[i], &rect, NULL )) continue;
 443         if (!PtInRect( &rect, pt )) continue;
 444         if (uFlags & (CWP_SKIPINVISIBLE|CWP_SKIPDISABLED))
 445         {
 446             LONG style = GetWindowLongW( list[i], GWL_STYLE );
 447             if ((uFlags & CWP_SKIPINVISIBLE) && !(style & WS_VISIBLE)) continue;
 448             if ((uFlags & CWP_SKIPDISABLED) && (style & WS_DISABLED)) continue;
 449         }
 450         if (uFlags & CWP_SKIPTRANSPARENT)
 451         {
 452             if (GetWindowLongW( list[i], GWL_EXSTYLE ) & WS_EX_TRANSPARENT) continue;
 453         }
 454         break;
 455     }
 456     retvalue = list[i];
 457     HeapFree( GetProcessHeap(), 0, list );
 458     if (!retvalue) retvalue = hwndParent;
 459     return retvalue;
 460 }
 461
 462
 463 /*******************************************************************
 464  *         WINPOS_GetWinOffset
 465  *
 466  * Calculate the offset between the origin of the two windows. Used
 467  * to implement MapWindowPoints.
 468  */
 469 static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
 470 {
 471     WND * wndPtr;
 472
 473     offset->x = offset->y = 0;
 474
 475     /* Translate source window origin to screen coords */
 476     if (hwndFrom)
 477     {
 478         HWND hwnd = hwndFrom;
 479
 480         while (hwnd && hwnd != GetDesktopWindow())
 481         {
 482             if (hwnd == hwndTo) return;
 483             if (!(wndPtr = WIN_GetPtr( hwnd )))
 484             {
 485                 ERR( "bad hwndFrom = %p\n", hwnd );
 486                 return;
 487             }
 488             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 489             offset->x += wndPtr->rectClient.left;
 490             offset->y += wndPtr->rectClient.top;
 491             hwnd = wndPtr->parent;
 492             WIN_ReleasePtr( wndPtr );
 493         }
 494     }
 495
 496     /* Translate origin to destination window coords */
 497     if (hwndTo)
 498     {
 499         HWND hwnd = hwndTo;
 500
 501         while (hwnd && hwnd != GetDesktopWindow())
 502         {
 503             if (!(wndPtr = WIN_GetPtr( hwnd )))
 504             {
 505                 ERR( "bad hwndTo = %p\n", hwnd );
 506                 return;
 507             }
 508             if (wndPtr == WND_OTHER_PROCESS) goto other_process;
 509             offset->x -= wndPtr->rectClient.left;
 510             offset->y -= wndPtr->rectClient.top;
 511             hwnd = wndPtr->parent;
 512             WIN_ReleasePtr( wndPtr );
 513         }
 514     }
 515     return;
 516
 517  other_process:  /* one of the parents may belong to another process, do it the hard way */
 518     offset->x = offset->y = 0;
 519     SERVER_START_REQ( get_windows_offset )
 520     {
 521         req->from = hwndFrom;
 522         req->to   = hwndTo;
 523         if (!wine_server_call( req ))
 524         {
 525             offset->x = reply->x;
 526             offset->y = reply->y;
 527         }
 528     }
 529     SERVER_END_REQ;
 530 }
 531
 532
 533 /*******************************************************************
 534  *              MapWindowPoints (USER.258)
 535  */
 536 void WINAPI MapWindowPoints16( HWND16 hwndFrom, HWND16 hwndTo,
 537                                LPPOINT16 lppt, UINT16 count )
 538 {
 539     POINT offset;
 540
 541     WINPOS_GetWinOffset( WIN_Handle32(hwndFrom), WIN_Handle32(hwndTo), &offset );
 542     while (count--)
 543     {
 544         lppt->x += offset.x;
 545         lppt->y += offset.y;
 546         lppt++;
 547     }
 548 }
 549
 550
 551 /*******************************************************************
 552  *              MapWindowPoints (USER32.@)
 553  */
 554 INT WINAPI MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, UINT count )
 555 {
 556     POINT offset;
 557
 558     WINPOS_GetWinOffset( hwndFrom, hwndTo, &offset );
 559     while (count--)
 560     {
 561         lppt->x += offset.x;
 562         lppt->y += offset.y;
 563         lppt++;
 564     }
 565     return MAKELONG( LOWORD(offset.x), LOWORD(offset.y) );
 566 }
 567
 568
 569 /***********************************************************************
 570  *              IsIconic (USER32.@)
 571  */
 572 BOOL WINAPI IsIconic(HWND hWnd)
 573 {
 574     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MINIMIZE) != 0;
 575 }
 576
 577
 578 /***********************************************************************
 579  *              IsZoomed (USER32.@)
 580  */
 581 BOOL WINAPI IsZoomed(HWND hWnd)
 582 {
 583     return (GetWindowLongW( hWnd, GWL_STYLE ) & WS_MAXIMIZE) != 0;
 584 }
 585
 586
 587 /*******************************************************************
 588  *              AllowSetForegroundWindow (USER32.@)
 589  */
 590 BOOL WINAPI AllowSetForegroundWindow( DWORD procid )
 591 {
 592     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 593      * implemented, then fix this function. */
 594     return TRUE;
 595 }
 596
 597
 598 /*******************************************************************
 599  *              LockSetForegroundWindow (USER32.@)
 600  */
 601 BOOL WINAPI LockSetForegroundWindow( UINT lockcode )
 602 {
 603     /* FIXME: If Win98/2000 style SetForegroundWindow behavior is
 604      * implemented, then fix this function. */
 605     return TRUE;
 606 }
 607
 608
 609 /***********************************************************************
 610  *              BringWindowToTop (USER32.@)
 611  */
 612 BOOL WINAPI BringWindowToTop( HWND hwnd )
 613 {
 614     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE );
 615 }
 616
 617
 618 /***********************************************************************
 619  *              MoveWindow (USER32.@)
 620  */
 621 BOOL WINAPI MoveWindow( HWND hwnd, INT x, INT y, INT cx, INT cy,
 622                             BOOL repaint )
 623 {
 624     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 625     if (!repaint) flags |= SWP_NOREDRAW;
 626     TRACE("%p %d,%d %dx%d %d\n", hwnd, x, y, cx, cy, repaint );
 627     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 628 }
 629
 630 /***********************************************************************
 631  *           WINPOS_InitInternalPos
 632  */
 633 static LPINTERNALPOS WINPOS_InitInternalPos( WND* wnd, POINT pt, const RECT *restoreRect )
 634 {
 635     LPINTERNALPOS lpPos = (LPINTERNALPOS) GetPropA( wnd->hwndSelf,
 636                                                       atomInternalPos );
 637     if( !lpPos )
 638     {
 639         /* this happens when the window is minimized/maximized
 640          * for the first time (rectWindow is not adjusted yet) */
 641
 642         lpPos = HeapAlloc( GetProcessHeap(), 0, sizeof(INTERNALPOS) );
 643         if( !lpPos ) return NULL;
 644
 645         SetPropA( wnd->hwndSelf, atomInternalPos, (HANDLE)lpPos );
 646         lpPos->hwndIconTitle = 0; /* defer until needs to be shown */
 647         lpPos->rectNormal.left   = wnd->rectWindow.left;
 648         lpPos->rectNormal.top    = wnd->rectWindow.top;
 649         lpPos->rectNormal.right  = wnd->rectWindow.right;
 650         lpPos->rectNormal.bottom = wnd->rectWindow.bottom;
 651         lpPos->ptIconPos.x = lpPos->ptIconPos.y = -1;
 652         lpPos->ptMaxPos.x = lpPos->ptMaxPos.y = -1;
 653     }
 654
 655     if( wnd->dwStyle & WS_MINIMIZE )
 656     {
 657         lpPos->ptIconPos.x = pt.x;
 658         lpPos->ptIconPos.y = pt.y;
 659     }
 660     else if( wnd->dwStyle & WS_MAXIMIZE )
 661     {
 662         lpPos->ptMaxPos.x = pt.x;
 663         lpPos->ptMaxPos.y = pt.y;
 664     }
 665     else if( restoreRect )
 666     {
 667         lpPos->rectNormal.left   = restoreRect->left;
 668         lpPos->rectNormal.top    = restoreRect->top;
 669         lpPos->rectNormal.right  = restoreRect->right;
 670         lpPos->rectNormal.bottom = restoreRect->bottom;
 671     }
 672     return lpPos;
 673 }
 674
 675 /***********************************************************************
 676  *           WINPOS_RedrawIconTitle
 677  */
 678 BOOL WINPOS_RedrawIconTitle( HWND hWnd )
 679 {
 680     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hWnd, atomInternalPos );
 681     if( lpPos )
 682     {
 683         if( lpPos->hwndIconTitle )
 684         {
 685             SendMessageA( lpPos->hwndIconTitle, WM_SHOWWINDOW, TRUE, 0);
 686             InvalidateRect( lpPos->hwndIconTitle, NULL, TRUE );
 687             return TRUE;
 688         }
 689     }
 690     return FALSE;
 691 }
 692
 693 /***********************************************************************
 694  *           WINPOS_ShowIconTitle
 695  */
 696 BOOL WINPOS_ShowIconTitle( HWND hwnd, BOOL bShow )
 697 {
 698     LPINTERNALPOS lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 699
 700     if( lpPos && !(GetWindowLongA( hwnd, GWL_EXSTYLE) & WS_EX_MANAGED))
 701     {
 702         HWND title = lpPos->hwndIconTitle;
 703
 704         TRACE("%p %i\n", hwnd, (bShow != 0) );
 705
 706         if( !title )
 707             lpPos->hwndIconTitle = title = ICONTITLE_Create( hwnd );
 708         if( bShow )
 709         {
 710             if (!IsWindowVisible(title))
 711             {
 712                 SendMessageA( title, WM_SHOWWINDOW, TRUE, 0 );
 713                 SetWindowPos( title, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
 714                               SWP_NOACTIVATE | SWP_NOZORDER | SWP_SHOWWINDOW );
 715             }
 716         }
 717         else ShowWindow( title, SW_HIDE );
 718     }
 719     return FALSE;
 720 }
 721
 722 /*******************************************************************
 723  *           WINPOS_GetMinMaxInfo
 724  *
 725  * Get the minimized and maximized information for a window.
 726  */
 727 void WINPOS_GetMinMaxInfo( HWND hwnd, POINT *maxSize, POINT *maxPos,
 728                            POINT *minTrack, POINT *maxTrack )
 729 {
 730     LPINTERNALPOS lpPos;
 731     MINMAXINFO MinMax;
 732     INT xinc, yinc;
 733     LONG style = GetWindowLongA( hwnd, GWL_STYLE );
 734     LONG exstyle = GetWindowLongA( hwnd, GWL_EXSTYLE );
 735     RECT rc;
 736
 737     /* Compute default values */
 738
 739     GetWindowRect(hwnd, &rc);
 740     MinMax.ptReserved.x = rc.left;
 741     MinMax.ptReserved.y = rc.top;
 742
 743     if (style & WS_CHILD)
 744     {
 745         if ((style & WS_CAPTION) == WS_CAPTION)
 746             style &= ~WS_BORDER; /* WS_CAPTION = WS_DLGFRAME | WS_BORDER */
 747
 748         GetClientRect(GetParent(hwnd), &rc);
 749         AdjustWindowRectEx(&rc, style, 0, exstyle);
 750
 751         /* avoid calculating this twice */
 752         style &= ~(WS_DLGFRAME | WS_BORDER | WS_THICKFRAME);
 753
 754         MinMax.ptMaxSize.x = rc.right - rc.left;
 755         MinMax.ptMaxSize.y = rc.bottom - rc.top;
 756     }
 757     else
 758     {
 759         MinMax.ptMaxSize.x = GetSystemMetrics(SM_CXSCREEN);
 760         MinMax.ptMaxSize.y = GetSystemMetrics(SM_CYSCREEN);
 761     }
 762     MinMax.ptMinTrackSize.x = GetSystemMetrics(SM_CXMINTRACK);
 763     MinMax.ptMinTrackSize.y = GetSystemMetrics(SM_CYMINTRACK);
 764     MinMax.ptMaxTrackSize.x = GetSystemMetrics(SM_CXSCREEN);
 765     MinMax.ptMaxTrackSize.y = GetSystemMetrics(SM_CYSCREEN);
 766
 767     if (HAS_DLGFRAME( style, exstyle ))
 768     {
 769         xinc = GetSystemMetrics(SM_CXDLGFRAME);
 770         yinc = GetSystemMetrics(SM_CYDLGFRAME);
 771     }
 772     else
 773     {
 774         xinc = yinc = 0;
 775         if (HAS_THICKFRAME(style))
 776         {
 777             xinc += GetSystemMetrics(SM_CXFRAME);
 778             yinc += GetSystemMetrics(SM_CYFRAME);
 779         }
 780         if (style & WS_BORDER)
 781         {
 782             xinc += GetSystemMetrics(SM_CXBORDER);
 783             yinc += GetSystemMetrics(SM_CYBORDER);
 784         }
 785     }
 786     MinMax.ptMaxSize.x += 2 * xinc;
 787     MinMax.ptMaxSize.y += 2 * yinc;
 788
 789     lpPos = (LPINTERNALPOS)GetPropA( hwnd, atomInternalPos );
 790     if( lpPos && !EMPTYPOINT(lpPos->ptMaxPos) )
 791     {
 792         MinMax.ptMaxPosition.x = lpPos->ptMaxPos.x;
 793         MinMax.ptMaxPosition.y = lpPos->ptMaxPos.y;
 794     }
 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     {
 839         if (USER_Driver.pShowWindow)
 840             return USER_Driver.pShowWindow( full_handle, cmd );
 841         return FALSE;
 842     }
 843     return SendNotifyMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 844 }
 845
 846
 847 /***********************************************************************
 848  *              ShowWindow (USER32.@)
 849  */
 850 BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
 851 {
 852     HWND full_handle;
 853
 854     if (is_broadcast(hwnd))
 855     {
 856         SetLastError( ERROR_INVALID_PARAMETER );
 857         return FALSE;
 858     }
 859     if ((full_handle = WIN_IsCurrentThread( hwnd )))
 860     {
 861         if (USER_Driver.pShowWindow)
 862             return USER_Driver.pShowWindow( full_handle, cmd );
 863         return FALSE;
 864     }
 865     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 866 }
 867
 868
 869 /***********************************************************************
 870  *              GetInternalWindowPos (USER32.@)
 871  */
 872 UINT WINAPI GetInternalWindowPos( HWND hwnd, LPRECT rectWnd,
 873                                       LPPOINT ptIcon )
 874 {
 875     WINDOWPLACEMENT wndpl;
 876     if (GetWindowPlacement( hwnd, &wndpl ))
 877     {
 878         if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 879         if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 880         return wndpl.showCmd;
 881     }
 882     return 0;
 883 }
 884
 885
 886 /***********************************************************************
 887  *              GetWindowPlacement (USER32.@)
 888  *
 889  * Win95:
 890  * Fails if wndpl->length of Win95 (!) apps is invalid.
 891  */
 892 BOOL WINAPI GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 893 {
 894     WND *pWnd = WIN_FindWndPtr( hwnd );
 895     LPINTERNALPOS lpPos;
 896
 897     if(!pWnd ) return FALSE;
 898
 899     lpPos = WINPOS_InitInternalPos( pWnd, *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 900     wndpl->length  = sizeof(*wndpl);
 901     if( pWnd->dwStyle & WS_MINIMIZE )
 902         wndpl->showCmd = SW_SHOWMINIMIZED;
 903     else
 904         wndpl->showCmd = ( pWnd->dwStyle & WS_MAXIMIZE ) ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL ;
 905     if( pWnd->flags & WIN_RESTORE_MAX )
 906         wndpl->flags = WPF_RESTORETOMAXIMIZED;
 907     else
 908         wndpl->flags = 0;
 909     wndpl->ptMinPosition.x = lpPos->ptIconPos.x;
 910     wndpl->ptMinPosition.y = lpPos->ptIconPos.y;
 911     wndpl->ptMaxPosition.x = lpPos->ptMaxPos.x;
 912     wndpl->ptMaxPosition.y = lpPos->ptMaxPos.y;
 913     wndpl->rcNormalPosition.left   = lpPos->rectNormal.left;
 914     wndpl->rcNormalPosition.top    = lpPos->rectNormal.top;
 915     wndpl->rcNormalPosition.right  = lpPos->rectNormal.right;
 916     wndpl->rcNormalPosition.bottom = lpPos->rectNormal.bottom;
 917     WIN_ReleaseWndPtr(pWnd);
 918     return TRUE;
 919 }
 920
 921
 922 /***********************************************************************
 923  *           WINPOS_SetPlacement
 924  */
 925 static BOOL WINPOS_SetPlacement( HWND hwnd, const WINDOWPLACEMENT *wndpl, UINT flags )
 926 {
 927     WND *pWnd = WIN_FindWndPtr( hwnd );
 928     if( pWnd )
 929     {
 930         LPINTERNALPOS lpPos = (LPINTERNALPOS)WINPOS_InitInternalPos( pWnd,
 931                              *(LPPOINT)&pWnd->rectWindow.left, &pWnd->rectWindow );
 932
 933         if( flags & PLACE_MIN )
 934         {
 935             lpPos->ptIconPos.x = wndpl->ptMinPosition.x;
 936             lpPos->ptIconPos.y = wndpl->ptMinPosition.y;
 937         }
 938         if( flags & PLACE_MAX )
 939         {
 940             lpPos->ptMaxPos.x = wndpl->ptMaxPosition.x;
 941             lpPos->ptMaxPos.y = wndpl->ptMaxPosition.y;
 942         }
 943         if( flags & PLACE_RECT)
 944         {
 945             lpPos->rectNormal.left   = wndpl->rcNormalPosition.left;
 946             lpPos->rectNormal.top    = wndpl->rcNormalPosition.top;
 947             lpPos->rectNormal.right  = wndpl->rcNormalPosition.right;
 948             lpPos->rectNormal.bottom = wndpl->rcNormalPosition.bottom;
 949         }
 950         if( pWnd->dwStyle & WS_MINIMIZE )
 951         {
 952             WINPOS_ShowIconTitle( pWnd->hwndSelf, FALSE );
 953             if( wndpl->flags & WPF_SETMINPOSITION && !EMPTYPOINT(lpPos->ptIconPos))
 954                 SetWindowPos( hwnd, 0, lpPos->ptIconPos.x, lpPos->ptIconPos.y,
 955                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 956         }
 957         else if( pWnd->dwStyle & WS_MAXIMIZE )
 958         {
 959             if( !EMPTYPOINT(lpPos->ptMaxPos) )
 960                 SetWindowPos( hwnd, 0, lpPos->ptMaxPos.x, lpPos->ptMaxPos.y,
 961                                 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 962         }
 963         else if( flags & PLACE_RECT )
 964                 SetWindowPos( hwnd, 0, lpPos->rectNormal.left, lpPos->rectNormal.top,
 965                                 lpPos->rectNormal.right - lpPos->rectNormal.left,
 966                                 lpPos->rectNormal.bottom - lpPos->rectNormal.top,
 967                                 SWP_NOZORDER | SWP_NOACTIVATE );
 968
 969         ShowWindow( hwnd, wndpl->showCmd );
 970         if( IsWindow(hwnd) && pWnd->dwStyle & WS_MINIMIZE )
 971         {
 972             if( pWnd->dwStyle & WS_VISIBLE ) WINPOS_ShowIconTitle( pWnd->hwndSelf, TRUE );
 973
 974             /* SDK: ...valid only the next time... */
 975             if( wndpl->flags & WPF_RESTORETOMAXIMIZED ) pWnd->flags |= WIN_RESTORE_MAX;
 976         }
 977         WIN_ReleaseWndPtr(pWnd);
 978         return TRUE;
 979     }
 980     return FALSE;
 981 }
 982
 983
 984 /***********************************************************************
 985  *              SetWindowPlacement (USER32.@)
 986  *
 987  * Win95:
 988  * Fails if wndpl->length of Win95 (!) apps is invalid.
 989  */
 990 BOOL WINAPI SetWindowPlacement( HWND hwnd, const WINDOWPLACEMENT *wpl )
 991 {
 992     if (!wpl) return FALSE;
 993     return WINPOS_SetPlacement( hwnd, wpl, PLACE_MIN | PLACE_MAX | PLACE_RECT );
 994 }
 995
 996
 997 /***********************************************************************
 998  *              AnimateWindow (USER32.@)
 999  *              Shows/Hides a window with an animation
1000  *              NO ANIMATION YET
1001  */
1002 BOOL WINAPI AnimateWindow(HWND hwnd, DWORD dwTime, DWORD dwFlags)
1003 {
1004         FIXME("partial stub\n");
1005
1006         /* If trying to show/hide and it's already   *
1007          * shown/hidden or invalid window, fail with *
1008          * invalid parameter                         */
1009         if(!IsWindow(hwnd) ||
1010            (IsWindowVisible(hwnd) && !(dwFlags & AW_HIDE)) ||
1011            (!IsWindowVisible(hwnd) && (dwFlags & AW_HIDE)))
1012         {
1013                 SetLastError(ERROR_INVALID_PARAMETER);
1014                 return FALSE;
1015         }
1016
1017         ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
1018
1019         return TRUE;
1020 }
1021
1022 /***********************************************************************
1023  *              SetInternalWindowPos (USER32.@)
1024  */
1025 void WINAPI SetInternalWindowPos( HWND hwnd, UINT showCmd,
1026                                     LPRECT rect, LPPOINT pt )
1027 {
1028     if( IsWindow(hwnd) )
1029     {
1030         WINDOWPLACEMENT wndpl;
1031         UINT flags;
1032
1033         wndpl.length  = sizeof(wndpl);
1034         wndpl.showCmd = showCmd;
1035         wndpl.flags = flags = 0;
1036
1037         if( pt )
1038         {
1039             flags |= PLACE_MIN;
1040             wndpl.flags |= WPF_SETMINPOSITION;
1041             wndpl.ptMinPosition = *pt;
1042         }
1043         if( rect )
1044         {
1045             flags |= PLACE_RECT;
1046             wndpl.rcNormalPosition = *rect;
1047         }
1048         WINPOS_SetPlacement( hwnd, &wndpl, flags );
1049     }
1050 }
1051
1052
1053 /*******************************************************************
1054  *         can_activate_window
1055  *
1056  * Check if we can activate the specified window.
1057  */
1058 static BOOL can_activate_window( HWND hwnd )
1059 {
1060     LONG style;
1061
1062     if (!hwnd) return FALSE;
1063     style = GetWindowLongW( hwnd, GWL_STYLE );
1064     if (!(style & WS_VISIBLE)) return FALSE;
1065     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
1066     return !(style & WS_DISABLED);
1067 }
1068
1069
1070 /*******************************************************************
1071  *         WINPOS_ActivateOtherWindow
1072  *
1073  *  Activates window other than pWnd.
1074  */
1075 void WINPOS_ActivateOtherWindow(HWND hwnd)
1076 {
1077     HWND hwndTo, fg;
1078
1079     if ((GetWindowLongW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
1080     {
1081         hwndTo = GetAncestor( hwndTo, GA_ROOT );
1082         if (can_activate_window( hwndTo )) goto done;
1083     }
1084
1085     hwndTo = hwnd;
1086     for (;;)
1087     {
1088         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
1089         if (can_activate_window( hwndTo )) break;
1090     }
1091
1092  done:
1093     fg = GetForegroundWindow();
1094     TRACE("win = %p fg = %p\n", hwndTo, fg);
1095     if (!fg || (hwnd == fg))
1096     {
1097         if (SetForegroundWindow( hwndTo )) return;
1098     }
1099     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
1100 }
1101
1102
1103 /***********************************************************************
1104  *           WINPOS_HandleWindowPosChanging16
1105  *
1106  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1107  */
1108 LONG WINPOS_HandleWindowPosChanging16( HWND hwnd, WINDOWPOS16 *winpos )
1109 {
1110     POINT minTrack, maxTrack;
1111     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1112
1113     if (winpos->flags & SWP_NOSIZE) return 0;
1114     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1115     {
1116         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1117         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1118         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1119         if (!(style & WS_MINIMIZE))
1120         {
1121             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1122             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1123         }
1124     }
1125     return 0;
1126 }
1127
1128
1129 /***********************************************************************
1130  *           WINPOS_HandleWindowPosChanging
1131  *
1132  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
1133  */
1134 LONG WINPOS_HandleWindowPosChanging( HWND hwnd, WINDOWPOS *winpos )
1135 {
1136     POINT minTrack, maxTrack;
1137     LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1138
1139     if (winpos->flags & SWP_NOSIZE) return 0;
1140     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
1141     {
1142         WINPOS_GetMinMaxInfo( hwnd, NULL, NULL, &minTrack, &maxTrack );
1143         if (winpos->cx > maxTrack.x) winpos->cx = maxTrack.x;
1144         if (winpos->cy > maxTrack.y) winpos->cy = maxTrack.y;
1145         if (!(style & WS_MINIMIZE))
1146         {
1147             if (winpos->cx < minTrack.x ) winpos->cx = minTrack.x;
1148             if (winpos->cy < minTrack.y ) winpos->cy = minTrack.y;
1149         }
1150     }
1151     return 0;
1152 }
1153
1154
1155 /***********************************************************************
1156  *           dump_winpos_flags
1157  */
1158 static void dump_winpos_flags(UINT flags)
1159 {
1160     TRACE("flags:");
1161     if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
1162     if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
1163     if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
1164     if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
1165     if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
1166     if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
1167     if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
1168     if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
1169     if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
1170     if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
1171     if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
1172     if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
1173     if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
1174
1175 #define DUMPED_FLAGS \
1176     (SWP_NOSIZE | \
1177     SWP_NOMOVE | \
1178     SWP_NOZORDER | \
1179     SWP_NOREDRAW | \
1180     SWP_NOACTIVATE | \
1181     SWP_FRAMECHANGED | \
1182     SWP_SHOWWINDOW | \
1183     SWP_HIDEWINDOW | \
1184     SWP_NOCOPYBITS | \
1185     SWP_NOOWNERZORDER | \
1186     SWP_NOSENDCHANGING | \
1187     SWP_DEFERERASE | \
1188     SWP_ASYNCWINDOWPOS)
1189
1190     if(flags & ~DUMPED_FLAGS) TRACE(" %08x", flags & ~DUMPED_FLAGS);
1191     TRACE("\n");
1192 #undef DUMPED_FLAGS
1193 }
1194
1195 /***********************************************************************
1196  *              SetWindowPos (USER32.@)
1197  */
1198 BOOL WINAPI SetWindowPos( HWND hwnd, HWND hwndInsertAfter,
1199                           INT x, INT y, INT cx, INT cy, UINT flags )
1200 {
1201     WINDOWPOS winpos;
1202
1203     TRACE("hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1204           hwnd, hwndInsertAfter, x, y, cx, cy, flags);
1205     if(TRACE_ON(win)) dump_winpos_flags(flags);
1206
1207     if (is_broadcast(hwnd))
1208     {
1209         SetLastError( ERROR_INVALID_PARAMETER );
1210         return FALSE;
1211     }
1212
1213     winpos.hwnd = WIN_GetFullHandle(hwnd);
1214     winpos.hwndInsertAfter = WIN_GetFullHandle(hwndInsertAfter);
1215     winpos.x = x;
1216     winpos.y = y;
1217     winpos.cx = cx;
1218     winpos.cy = cy;
1219     winpos.flags = flags;
1220     if (WIN_IsCurrentThread( hwnd ))
1221     {
1222         if (USER_Driver.pSetWindowPos)
1223             return USER_Driver.pSetWindowPos( &winpos );
1224         return FALSE;
1225     }
1226     return SendMessageW( winpos.hwnd, WM_WINE_SETWINDOWPOS, 0, (LPARAM)&winpos );
1227 }
1228
1229
1230 /***********************************************************************
1231  *              BeginDeferWindowPos (USER32.@)
1232  */
1233 HDWP WINAPI BeginDeferWindowPos( INT count )
1234 {
1235     HDWP handle;
1236     DWP *pDWP;
1237
1238     TRACE("%d\n", count);
1239
1240     if (count < 0)
1241     {
1242         SetLastError(ERROR_INVALID_PARAMETER);
1243         return 0;
1244     }
1245     /* Windows allows zero count, in which case it allocates context for 8 moves */
1246     if (count == 0) count = 8;
1247
1248     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1249     if (!handle) return 0;
1250     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1251     pDWP->actualCount    = 0;
1252     pDWP->suggestedCount = count;
1253     pDWP->valid          = TRUE;
1254     pDWP->wMagic         = DWP_MAGIC;
1255     pDWP->hwndParent     = 0;
1256
1257     TRACE("returning hdwp %p\n", handle);
1258     return handle;
1259 }
1260
1261
1262 /***********************************************************************
1263  *              DeferWindowPos (USER32.@)
1264  */
1265 HDWP WINAPI DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter,
1266                                 INT x, INT y, INT cx, INT cy,
1267                                 UINT flags )
1268 {
1269     DWP *pDWP;
1270     int i;
1271     HDWP newhdwp = hdwp,retvalue;
1272
1273     TRACE("hdwp %p, hwnd %p, after %p, %d,%d (%dx%d), flags %08x\n",
1274           hdwp, hwnd, hwndAfter, x, y, cx, cy, flags);
1275
1276     hwnd = WIN_GetFullHandle( hwnd );
1277     if (hwnd == GetDesktopWindow()) return 0;
1278
1279     if (!(pDWP = USER_HEAP_LIN_ADDR( hdwp ))) return 0;
1280
1281     USER_Lock();
1282
1283     for (i = 0; i < pDWP->actualCount; i++)
1284     {
1285         if (pDWP->winPos[i].hwnd == hwnd)
1286         {
1287               /* Merge with the other changes */
1288             if (!(flags & SWP_NOZORDER))
1289             {
1290                 pDWP->winPos[i].hwndInsertAfter = WIN_GetFullHandle(hwndAfter);
1291             }
1292             if (!(flags & SWP_NOMOVE))
1293             {
1294                 pDWP->winPos[i].x = x;
1295                 pDWP->winPos[i].y = y;
1296             }
1297             if (!(flags & SWP_NOSIZE))
1298             {
1299                 pDWP->winPos[i].cx = cx;
1300                 pDWP->winPos[i].cy = cy;
1301             }
1302             pDWP->winPos[i].flags &= flags | ~(SWP_NOSIZE | SWP_NOMOVE |
1303                                                SWP_NOZORDER | SWP_NOREDRAW |
1304                                                SWP_NOACTIVATE | SWP_NOCOPYBITS|
1305                                                SWP_NOOWNERZORDER);
1306             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1307                                               SWP_FRAMECHANGED);
1308             retvalue = hdwp;
1309             goto END;
1310         }
1311     }
1312     if (pDWP->actualCount >= pDWP->suggestedCount)
1313     {
1314         newhdwp = USER_HEAP_REALLOC( hdwp,
1315                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1316         if (!newhdwp)
1317         {
1318             retvalue = 0;
1319             goto END;
1320         }
1321         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1322         pDWP->suggestedCount++;
1323     }
1324     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1325     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1326     pDWP->winPos[pDWP->actualCount].x = x;
1327     pDWP->winPos[pDWP->actualCount].y = y;
1328     pDWP->winPos[pDWP->actualCount].cx = cx;
1329     pDWP->winPos[pDWP->actualCount].cy = cy;
1330     pDWP->winPos[pDWP->actualCount].flags = flags;
1331     pDWP->actualCount++;
1332     retvalue = newhdwp;
1333 END:
1334     USER_Unlock();
1335     return retvalue;
1336 }
1337
1338
1339 /***********************************************************************
1340  *              EndDeferWindowPos (USER32.@)
1341  */
1342 BOOL WINAPI EndDeferWindowPos( HDWP hdwp )
1343 {
1344     DWP *pDWP;
1345     WINDOWPOS *winpos;
1346     BOOL res = TRUE;
1347     int i;
1348
1349     TRACE("%p\n", hdwp);
1350
1351     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1352     if (!pDWP) return FALSE;
1353     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1354     {
1355         if (!USER_Driver.pSetWindowPos || !(res = USER_Driver.pSetWindowPos( winpos ))) break;
1356     }
1357     USER_HEAP_FREE( hdwp );
1358     return res;
1359 }
1360
1361
1362 /***********************************************************************
1363  *              TileChildWindows (USER.199)
1364  */
1365 void WINAPI TileChildWindows16( HWND16 parent, WORD action )
1366 {
1367     FIXME("(%04x, %d): stub\n", parent, action);
1368 }
1369
1370 /***********************************************************************
1371  *              CascadeChildWindows (USER.198)
1372  */
1373 void WINAPI CascadeChildWindows16( HWND16 parent, WORD action )
1374 {
1375     FIXME("(%04x, %d): stub\n", parent, action);
1376 }