windows/winpos.c

   1 /*
   2  * Window position related functions.
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 static char Copyright[] = "Copyright  Alexandre Julliard, 1993";
   8
   9 #include "sysmetrics.h"
  10 #include "user.h"
  11 #include "win.h"
  12 #include "message.h"
  13
  14 static HWND hwndActive = 0;  /* Currently active window */
  15
  16
  17 /***********************************************************************
  18  *           GetWindowRect   (USER.32)
  19  */
  20 void GetWindowRect( HWND hwnd, LPRECT rect )
  21 {
  22     WND * wndPtr = WIN_FindWndPtr( hwnd );
  23     if (!wndPtr) return;
  24
  25     *rect = wndPtr->rectWindow;
  26     if (wndPtr->dwStyle & WS_CHILD)
  27         MapWindowPoints( wndPtr->hwndParent, 0, (POINT *)rect, 2 );
  28 }
  29
  30
  31 /***********************************************************************
  32  *           GetClientRect   (USER.33)
  33  */
  34 void GetClientRect( HWND hwnd, LPRECT rect )
  35 {
  36     WND * wndPtr = WIN_FindWndPtr( hwnd );
  37
  38     rect->left = rect->top = rect->right = rect->bottom = 0;
  39     if (wndPtr)
  40     {
  41         rect->right  = wndPtr->rectClient.right - wndPtr->rectClient.left;
  42         rect->bottom = wndPtr->rectClient.bottom - wndPtr->rectClient.top;
  43     }
  44 }
  45
  46
  47 /*******************************************************************
  48  *         ClientToScreen   (USER.28)
  49  */
  50 void ClientToScreen( HWND hwnd, LPPOINT lppnt )
  51 {
  52     MapWindowPoints( hwnd, 0, lppnt, 1 );
  53 }
  54
  55
  56 /*******************************************************************
  57  *         ScreenToClient   (USER.29)
  58  */
  59 void ScreenToClient( HWND hwnd, LPPOINT lppnt )
  60 {
  61     MapWindowPoints( 0, hwnd, lppnt, 1 );
  62 }
  63
  64
  65 /*******************************************************************
  66  *         WindowFromPoint   (USER.30)
  67  */
  68 HWND WindowFromPoint( POINT pt )
  69 {
  70     HWND hwndRet = 0;
  71     HWND hwnd = GetDesktopWindow();
  72
  73     while(hwnd)
  74     {
  75           /* If point is in window, and window is visible,   */
  76           /* not disabled and not transparent, then explore  */
  77           /* its children. Otherwise, go to the next window. */
  78
  79         WND *wndPtr = WIN_FindWndPtr( hwnd );
  80         if ((pt.x >= wndPtr->rectWindow.left) &&
  81             (pt.x < wndPtr->rectWindow.right) &&
  82             (pt.y >= wndPtr->rectWindow.top) &&
  83             (pt.y < wndPtr->rectWindow.bottom) &&
  84             !(wndPtr->dwStyle & WS_DISABLED) &&
  85             (wndPtr->dwStyle & WS_VISIBLE) &&
  86             !(wndPtr->dwExStyle & WS_EX_TRANSPARENT))
  87         {
  88             pt.x -= wndPtr->rectClient.left;
  89             pt.y -= wndPtr->rectClient.top;
  90             hwndRet = hwnd;
  91             hwnd = wndPtr->hwndChild;
  92         }
  93         else hwnd = wndPtr->hwndNext;
  94     }
  95     return hwndRet;
  96 }
  97
  98
  99 /*******************************************************************
 100  *         ChildWindowFromPoint   (USER.191)
 101  */
 102 HWND ChildWindowFromPoint( HWND hwndParent, POINT pt )
 103 {
 104     RECT rect;
 105     HWND hwnd;
 106
 107     GetWindowRect( hwndParent, &rect );
 108     if (!PtInRect( &rect, pt )) return 0;
 109     hwnd = GetTopWindow( hwndParent );
 110     while (hwnd)
 111     {
 112         GetWindowRect( hwnd, &rect );
 113         if (PtInRect( &rect, pt )) return hwnd;
 114         hwnd = GetWindow( hwnd, GW_HWNDNEXT );
 115     }
 116     return hwndParent;
 117 }
 118
 119
 120 /*******************************************************************
 121  *         MapWindowPoints   (USER.258)
 122  */
 123 void MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, WORD count )
 124 {
 125     WND * wndPtr;
 126     POINT * curpt;
 127     POINT origin = { 0, 0 };
 128     WORD i;
 129
 130       /* Translate source window origin to screen coords */
 131     while(hwndFrom)
 132     {
 133         wndPtr = WIN_FindWndPtr( hwndFrom );
 134         origin.x += wndPtr->rectClient.left;
 135         origin.y += wndPtr->rectClient.top;
 136         hwndFrom = (wndPtr->dwStyle & WS_CHILD) ? wndPtr->hwndParent : 0;
 137     }
 138
 139       /* Translate origin to destination window coords */
 140     while(hwndTo)
 141     {
 142         wndPtr = WIN_FindWndPtr( hwndTo );
 143         origin.x -= wndPtr->rectClient.left;
 144         origin.y -= wndPtr->rectClient.top;
 145         hwndTo = (wndPtr->dwStyle & WS_CHILD) ? wndPtr->hwndParent : 0;
 146     }
 147
 148       /* Translate points */
 149     for (i = 0, curpt = lppt; i < count; i++, curpt++)
 150     {
 151         curpt->x += origin.x;
 152         curpt->y += origin.y;
 153     }
 154 }
 155
 156
 157 /***********************************************************************
 158  *           IsIconic   (USER.31)
 159  */
 160 BOOL IsIconic(HWND hWnd)
 161 {
 162     WND * wndPtr = WIN_FindWndPtr(hWnd);
 163     if (wndPtr == NULL) return FALSE;
 164     return (wndPtr->dwStyle & WS_MINIMIZE) != 0;
 165 }
 166
 167
 168 /***********************************************************************
 169  *           IsZoomed   (USER.272)
 170  */
 171 BOOL IsZoomed(HWND hWnd)
 172 {
 173     WND * wndPtr = WIN_FindWndPtr(hWnd);
 174     if (wndPtr == NULL) return FALSE;
 175     return (wndPtr->dwStyle & WS_MAXIMIZE) != 0;
 176 }
 177
 178
 179 /*******************************************************************
 180  *         GetActiveWindow    (USER.60)
 181  */
 182 HWND GetActiveWindow()
 183 {
 184     return hwndActive;
 185 }
 186
 187 /*******************************************************************
 188  *         SetActiveWindow    (USER.59)
 189  */
 190 HWND SetActiveWindow( HWND hwnd )
 191 {
 192     HWND prev = hwndActive;
 193     WND *wndPtr = WIN_FindWndPtr( hwnd );
 194     if (!wndPtr || (wndPtr->dwStyle & WS_CHILD)) return 0;
 195     SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE );
 196     return prev;
 197 }
 198
 199
 200 /***********************************************************************
 201  *           BringWindowToTop   (USER.45)
 202  */
 203 BOOL BringWindowToTop( HWND hwnd )
 204 {
 205     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE );
 206 }
 207
 208
 209 /***********************************************************************
 210  *           MoveWindow   (USER.56)
 211  */
 212 BOOL MoveWindow( HWND hwnd, short x, short y, short cx, short cy, BOOL repaint)
 213 {
 214     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 215     if (!repaint) flags |= SWP_NOREDRAW;
 216 #ifdef DEBUG_WIN
 217     printf( "MoveWindow: %d %d,%d %dx%d %d\n", hwnd, x, y, cx, cy, repaint );
 218 #endif
 219     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 220 }
 221
 222
 223 /***********************************************************************
 224  *           ShowWindow   (USER.42)
 225  */
 226 BOOL ShowWindow( HWND hwnd, int cmd )
 227 {
 228     WND * wndPtr = WIN_FindWndPtr( hwnd );
 229     BOOL wasVisible;
 230     int swpflags = 0;
 231
 232 #ifdef DEBUG_WIN
 233     printf("ShowWindow: hwnd=%d, cmd=%d\n", hwnd, cmd);
 234 #endif
 235
 236     if (!wndPtr) return FALSE;
 237     wasVisible = (wndPtr->dwStyle & WS_VISIBLE) != 0;
 238     switch(cmd)
 239     {
 240         case SW_HIDE:
 241             if (!wasVisible) return FALSE;  /* Nothing to do */
 242             swpflags |= SWP_HIDEWINDOW | SWP_NOSIZE | SWP_NOMOVE |
 243                         SWP_NOACTIVATE | SWP_NOZORDER;
 244             break;
 245
 246         case SW_SHOWMINNOACTIVE:
 247         case SW_SHOWMINIMIZED:
 248         case SW_SHOWMAXIMIZED:
 249         case SW_MINIMIZE:
 250             wndPtr->dwStyle |= WS_MINIMIZE;
 251             swpflags |= SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE |
 252                         SWP_NOACTIVATE | SWP_NOZORDER;
 253             break;
 254
 255         case SW_SHOWNA:
 256         case SW_MAXIMIZE:
 257         case SW_SHOW:
 258             swpflags |= SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE;
 259             break;
 260
 261         case SW_NORMAL:
 262         case SW_SHOWNORMAL:
 263         case SW_SHOWNOACTIVATE:
 264         case SW_RESTORE:
 265             wndPtr->dwStyle &= ~WS_MINIMIZE;
 266             wndPtr->dwStyle &= ~WS_MAXIMIZE;
 267             swpflags |= SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE;
 268             if (cmd == SW_SHOWNOACTIVATE)
 269             {
 270                 swpflags |= SWP_NOZORDER;
 271                 if (GetActiveWindow()) swpflags |= SWP_NOACTIVATE;
 272             }
 273             break;
 274     }
 275     SendMessage( hwnd, WM_SHOWWINDOW, (cmd != SW_HIDE), 0 );
 276     SetWindowPos( hwnd, 0, 0, 0, 0, 0, swpflags );
 277
 278       /* Send WM_SIZE and WM_MOVE messages if not already done */
 279     if (!(wndPtr->flags & WIN_GOT_SIZEMSG))
 280     {
 281         int wParam = SIZE_RESTORED;
 282         if (wndPtr->dwStyle & WS_MAXIMIZE) wParam = SIZE_MAXIMIZED;
 283         else if (wndPtr->dwStyle & WS_MINIMIZE) wParam = SIZE_MINIMIZED;
 284         wndPtr->flags |= WIN_GOT_SIZEMSG;
 285         SendMessage( hwnd, WM_SIZE, wParam,
 286                      MAKELONG(wndPtr->rectClient.right-wndPtr->rectClient.left,
 287                             wndPtr->rectClient.bottom-wndPtr->rectClient.top));
 288         SendMessage( hwnd, WM_MOVE, 0,
 289                    MAKELONG(wndPtr->rectClient.left, wndPtr->rectClient.top) );
 290     }
 291     return wasVisible;
 292 }
 293
 294
 295 /***********************************************************************
 296  *           GetInternalWindowPos   (USER.460)
 297  */
 298 WORD GetInternalWindowPos( HWND hwnd, LPRECT rectWnd, LPPOINT ptIcon )
 299 {
 300     WINDOWPLACEMENT wndpl;
 301     if (!GetWindowPlacement( hwnd, &wndpl )) return 0;
 302     if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 303     if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 304     return wndpl.showCmd;
 305 }
 306
 307
 308 /***********************************************************************
 309  *           SetInternalWindowPos   (USER.461)
 310  */
 311 void SetInternalWindowPos( HWND hwnd, WORD showCmd, LPRECT rect, LPPOINT pt )
 312 {
 313     WINDOWPLACEMENT wndpl;
 314     WND *wndPtr = WIN_FindWndPtr( hwnd );
 315
 316     wndpl.length  = sizeof(wndpl);
 317     wndpl.flags   = (pt != NULL) ? WPF_SETMINPOSITION : 0;
 318     wndpl.showCmd = showCmd;
 319     if (pt) wndpl.ptMinPosition = *pt;
 320     wndpl.rcNormalPosition = (rect != NULL) ? *rect : wndPtr->rectNormal;
 321     wndpl.ptMaxPosition = wndPtr->ptMaxPos;
 322     SetWindowPlacement( hwnd, &wndpl );
 323 }
 324
 325
 326 /***********************************************************************
 327  *           GetWindowPlacement   (USER.370)
 328  */
 329 BOOL GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 330 {
 331     WND *wndPtr = WIN_FindWndPtr( hwnd );
 332     if (!wndPtr) return FALSE;
 333
 334     wndpl->length  = sizeof(*wndpl);
 335     wndpl->flags   = 0;
 336     wndpl->showCmd = IsZoomed(hwnd) ? SW_SHOWMAXIMIZED :
 337                      (IsIconic(hwnd) ? SW_SHOWMINIMIZED : SW_SHOWNORMAL);
 338     wndpl->ptMinPosition = wndPtr->ptIconPos;
 339     wndpl->ptMaxPosition = wndPtr->ptMaxPos;
 340     wndpl->rcNormalPosition = wndPtr->rectNormal;
 341     return TRUE;
 342 }
 343
 344
 345 /***********************************************************************
 346  *           SetWindowPlacement   (USER.371)
 347  */
 348 BOOL SetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 349 {
 350     WND *wndPtr = WIN_FindWndPtr( hwnd );
 351     if (!wndPtr) return FALSE;
 352
 353     if (wndpl->flags & WPF_SETMINPOSITION)
 354         wndPtr->ptIconPos = wndpl->ptMinPosition;
 355     if ((wndpl->flags & WPF_RESTORETOMAXIMIZED) &&
 356         (wndpl->showCmd == SW_SHOWMINIMIZED)) wndPtr->flags |= WIN_RESTORE_MAX;
 357     wndPtr->ptMaxPos   = wndpl->ptMaxPosition;
 358     wndPtr->rectNormal = wndpl->rcNormalPosition;
 359     ShowWindow( hwnd, wndpl->showCmd );
 360     return TRUE;
 361 }
 362
 363
 364 /*******************************************************************
 365  *         WINPOS_GetMinMaxInfo
 366  *
 367  * Send a WM_GETMINMAXINFO to the window.
 368  */
 369 void WINPOS_GetMinMaxInfo( HWND hwnd, POINT *maxSize, POINT *maxPos,
 370                            POINT *minTrack, POINT *maxTrack )
 371 {
 372     HANDLE minmaxHandle;
 373     MINMAXINFO MinMax, *pMinMax;
 374     WND *wndPtr = WIN_FindWndPtr( hwnd );
 375
 376     MinMax.ptMaxSize.x = SYSMETRICS_CXSCREEN;
 377     MinMax.ptMaxSize.y = SYSMETRICS_CYSCREEN;
 378     MinMax.ptMaxPosition = wndPtr->ptMaxPos;
 379     MinMax.ptMinTrackSize.x = SYSMETRICS_CXMINTRACK;
 380     MinMax.ptMinTrackSize.y = SYSMETRICS_CYMINTRACK;
 381     MinMax.ptMaxTrackSize.x = SYSMETRICS_CXSCREEN;
 382     MinMax.ptMaxTrackSize.y = SYSMETRICS_CYSCREEN;
 383
 384     minmaxHandle = USER_HEAP_ALLOC( LMEM_MOVEABLE, sizeof(MINMAXINFO) );
 385     if (minmaxHandle)
 386     {
 387         pMinMax = (MINMAXINFO *) USER_HEAP_ADDR( minmaxHandle );
 388         memcpy( pMinMax, &MinMax, sizeof(MinMax) );
 389         SendMessage( hwnd, WM_GETMINMAXINFO, 0, (LONG)pMinMax );
 390     }
 391     else pMinMax = &MinMax;
 392
 393       /* Some sanity checks */
 394
 395     pMinMax->ptMaxTrackSize.x = max( pMinMax->ptMaxTrackSize.x,
 396                                      pMinMax->ptMinTrackSize.x );
 397     pMinMax->ptMaxTrackSize.y = max( pMinMax->ptMaxTrackSize.y,
 398                                      pMinMax->ptMinTrackSize.y );
 399
 400     if (maxSize) *maxSize = pMinMax->ptMaxSize;
 401     if (maxPos) *maxPos = pMinMax->ptMaxPosition;
 402     if (minTrack) *minTrack = pMinMax->ptMinTrackSize;
 403     if (maxTrack) *maxTrack = pMinMax->ptMaxTrackSize;
 404     if (minmaxHandle) USER_HEAP_FREE( minmaxHandle );
 405 }
 406
 407
 408 /*******************************************************************
 409  *         WINPOS_ChangeActiveWindow
 410  *
 411  * Change the active window and send the corresponding messages.
 412  */
 413 HWND WINPOS_ChangeActiveWindow( HWND hwnd, BOOL mouseMsg )
 414 {
 415     HWND prevActive = hwndActive;
 416     if (hwnd == hwndActive) return 0;
 417     if (hwndActive)
 418     {
 419         if (!SendMessage( hwndActive, WM_NCACTIVATE, FALSE, 0 )) return 0;
 420         SendMessage( hwndActive, WM_ACTIVATE, WA_INACTIVE,
 421                      MAKELONG( IsIconic(hwndActive), hwnd ) );
 422         /* Send WM_ACTIVATEAPP here */
 423     }
 424
 425     hwndActive = hwnd;
 426     if (hwndActive)
 427     {
 428         /* Send WM_ACTIVATEAPP here */
 429         SendMessage( hwnd, WM_NCACTIVATE, TRUE, 0 );
 430         SendMessage( hwnd, WM_ACTIVATE, mouseMsg ? WA_CLICKACTIVE : WA_ACTIVE,
 431                      MAKELONG( IsIconic(hwnd), prevActive ) );
 432     }
 433     return prevActive;
 434 }
 435
 436
 437 /***********************************************************************
 438  *           SetWindowPos   (USER.232)
 439  */
 440 /* Unimplemented flags: SWP_NOREDRAW
 441  */
 442 /* Note: all this code should be in the DeferWindowPos() routines,
 443  * and SetWindowPos() should simply call them.  This will be implemented
 444  * some day...
 445  */
 446 BOOL SetWindowPos( HWND hwnd, HWND hwndInsertAfter, short x, short y,
 447                    short cx, short cy, WORD flags )
 448 {
 449     WINDOWPOS *winPos;
 450     HANDLE hmem = 0;
 451     RECT newWindowRect, newClientRect;
 452     WND *wndPtr;
 453     int calcsize_result = 0;
 454     XWindowChanges winChanges;
 455     int changeMask = 0;
 456
 457 #ifdef DEBUG_WIN
 458     printf( "SetWindowPos: %d %d %d,%d %dx%d 0x%x\n",
 459             hwnd, hwndInsertAfter, x, y, cx, cy, flags );
 460 #endif
 461
 462     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 463     if (flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW))
 464         flags |= SWP_NOMOVE | SWP_NOSIZE;
 465
 466       /* Send WM_WINDOWPOSCHANGING message */
 467
 468     if (!(hmem = USER_HEAP_ALLOC( GMEM_MOVEABLE, sizeof(WINDOWPOS) )))
 469         return FALSE;
 470     winPos = (WINDOWPOS *)USER_HEAP_ADDR( hmem );
 471     winPos->hwnd = hwnd;
 472     winPos->hwndInsertAfter = hwndInsertAfter;
 473     winPos->x = x;
 474     winPos->y = y;
 475     winPos->cx = cx;
 476     winPos->cy = cy;
 477     winPos->flags = flags;
 478     SendMessage( hwnd, WM_WINDOWPOSCHANGING, 0, (LONG)winPos );
 479     hwndInsertAfter = winPos->hwndInsertAfter;
 480
 481       /* Some sanity checks */
 482
 483     if (!IsWindow( hwnd ) || (hwnd == GetDesktopWindow())) goto Abort;
 484     if (flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW))
 485         flags |= SWP_NOMOVE | SWP_NOSIZE;
 486     if (!(flags & (SWP_NOZORDER | SWP_NOACTIVATE)))
 487     {
 488         if (hwnd != hwndActive) hwndInsertAfter = HWND_TOP;
 489         else if ((hwndInsertAfter == HWND_TOPMOST) ||
 490                  (hwndInsertAfter == HWND_NOTOPMOST))
 491             hwndInsertAfter = HWND_TOP;
 492     }
 493
 494       /* Calculate new position and size */
 495
 496     newWindowRect = wndPtr->rectWindow;
 497     newClientRect = wndPtr->rectClient;
 498
 499     if (!(winPos->flags & SWP_NOSIZE))
 500     {
 501         newWindowRect.right  = newWindowRect.left + winPos->cx;
 502         newWindowRect.bottom = newWindowRect.top + winPos->cy;
 503     }
 504
 505     if (!(winPos->flags & SWP_NOMOVE))
 506     {
 507         newWindowRect.left    = winPos->x;
 508         newWindowRect.top     = winPos->y;
 509         newWindowRect.right  += winPos->x - wndPtr->rectWindow.left;
 510         newWindowRect.bottom += winPos->y - wndPtr->rectWindow.top;
 511     }
 512
 513       /* Reposition window in Z order */
 514
 515     if (!(winPos->flags & SWP_NOZORDER))
 516     {
 517           /* TOPMOST not supported yet */
 518         if ((hwndInsertAfter == HWND_TOPMOST) ||
 519             (hwndInsertAfter == HWND_NOTOPMOST)) hwndInsertAfter = HWND_TOP;
 520
 521           /* Make sure hwndInsertAfter is a sibling of hwnd */
 522         if ((hwndInsertAfter != HWND_TOP) && (hwndInsertAfter != HWND_BOTTOM))
 523             if (GetParent(hwnd) != GetParent(hwndInsertAfter)) goto Abort;
 524
 525         WIN_UnlinkWindow( hwnd );
 526         WIN_LinkWindow( hwnd, hwndInsertAfter );
 527     }
 528
 529       /* Recalculate client area position */
 530
 531     if (winPos->flags & SWP_FRAMECHANGED)
 532     {
 533           /* Send WM_NCCALCSIZE message */
 534         NCCALCSIZE_PARAMS *params;
 535         HANDLE hparams;
 536
 537         if (!(hparams = USER_HEAP_ALLOC( GMEM_MOVEABLE, sizeof(*params) )))
 538             goto Abort;
 539         params = (NCCALCSIZE_PARAMS *) USER_HEAP_ADDR( hparams );
 540         params->rgrc[0] = newWindowRect;
 541         params->rgrc[1] = wndPtr->rectWindow;
 542         params->rgrc[2] = wndPtr->rectClient;
 543         params->lppos = winPos;
 544         calcsize_result = SendMessage(hwnd, WM_NCCALCSIZE, TRUE, (LONG)params);
 545         USER_HEAP_FREE( hparams );
 546         newClientRect = params->rgrc[0];
 547         /* Handle result here */
 548     }
 549     else
 550     {
 551         newClientRect.left   = newWindowRect.left + wndPtr->rectClient.left
 552                                - wndPtr->rectWindow.left;
 553         newClientRect.top    = newWindowRect.top + wndPtr->rectClient.top
 554                                - wndPtr->rectWindow.top;
 555         newClientRect.right  = newWindowRect.right + wndPtr->rectClient.right
 556                                - wndPtr->rectWindow.right;
 557         newClientRect.bottom = newWindowRect.bottom + wndPtr->rectClient.bottom
 558                                - wndPtr->rectWindow.bottom;
 559     }
 560
 561       /* Perform the moving and resizing */
 562
 563     if (!(winPos->flags & SWP_NOMOVE))
 564     {
 565         WND * parentPtr;
 566         winChanges.x = newWindowRect.left;
 567         winChanges.y = newWindowRect.top;
 568         if (wndPtr->dwStyle & WS_CHILD)
 569         {
 570             parentPtr = WIN_FindWndPtr(wndPtr->hwndParent);
 571             winChanges.x += parentPtr->rectClient.left-parentPtr->rectWindow.left;
 572             winChanges.y += parentPtr->rectClient.top-parentPtr->rectWindow.top;
 573         }
 574         changeMask |= CWX | CWY;
 575     }
 576     if (!(winPos->flags & SWP_NOSIZE))
 577     {
 578         winChanges.width  = newWindowRect.right - newWindowRect.left;
 579         winChanges.height = newWindowRect.bottom - newWindowRect.top;
 580         changeMask |= CWWidth | CWHeight;
 581     }
 582     if (!(winPos->flags & SWP_NOZORDER))
 583     {
 584         if (hwndInsertAfter == HWND_TOP) winChanges.stack_mode = Above;
 585         else winChanges.stack_mode = Below;
 586         if ((hwndInsertAfter != HWND_TOP) && (hwndInsertAfter != HWND_BOTTOM))
 587         {
 588             WND * insertPtr = WIN_FindWndPtr( hwndInsertAfter );
 589             winChanges.sibling = insertPtr->window;
 590             changeMask |= CWSibling;
 591         }
 592         changeMask |= CWStackMode;
 593     }
 594     if (changeMask) XConfigureWindow( display, wndPtr->window,
 595                                       changeMask, &winChanges );
 596
 597     if (winPos->flags & SWP_SHOWWINDOW)
 598     {
 599         wndPtr->dwStyle |= WS_VISIBLE;
 600         XMapWindow( display, wndPtr->window );
 601         MSG_Synchronize();
 602         if (!(winPos->flags & SWP_NOREDRAW))
 603             RedrawWindow( hwnd, NULL, 0, RDW_INVALIDATE | RDW_ERASE |
 604                           RDW_ERASENOW | RDW_FRAME );
 605         else RedrawWindow( hwnd, NULL, 0, RDW_VALIDATE );
 606
 607     }
 608     else if (winPos->flags & SWP_HIDEWINDOW)
 609     {
 610         wndPtr->dwStyle &= ~WS_VISIBLE;
 611         XUnmapWindow( display, wndPtr->window );
 612     }
 613
 614     if (!(winPos->flags & SWP_NOACTIVATE))
 615     {
 616         if (!(wndPtr->dwStyle & WS_CHILD))
 617             WINPOS_ChangeActiveWindow( hwnd, FALSE );
 618     }
 619
 620       /* Send WM_NCPAINT message if needed */
 621     if ((winPos->flags & (SWP_FRAMECHANGED | SWP_SHOWWINDOW)) ||
 622         (!(winPos->flags & SWP_NOSIZE)) ||
 623         (!(winPos->flags & SWP_NOMOVE)) ||
 624         (!(winPos->flags & SWP_NOACTIVATE)) ||
 625         (!(winPos->flags & SWP_NOZORDER)))
 626             SendMessage( hwnd, WM_NCPAINT, 1, 0L );
 627
 628       /* Finally send the WM_WINDOWPOSCHANGED message */
 629     wndPtr->rectWindow = newWindowRect;
 630     wndPtr->rectClient = newClientRect;
 631     SendMessage( hwnd, WM_WINDOWPOSCHANGED, 0, (LONG)winPos );
 632     USER_HEAP_FREE( hmem );
 633
 634     return TRUE;
 635
 636  Abort:  /* Fatal error encountered */
 637     if (hmem) USER_HEAP_FREE( hmem );
 638     return FALSE;
 639 }