windows/winpos.c

   1 /*
   2  * Window position related functions.
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1995 Alex Korobka
   6  */
   7
   8 #include "sysmetrics.h"
   9 #include "selectors.h"
  10 #include "user.h"
  11 #include "win.h"
  12 #include "event.h"
  13 #include "hook.h"
  14 #include "message.h"
  15 #include "stackframe.h"
  16 #include "winpos.h"
  17 #include "nonclient.h"
  18 #include "stddebug.h"
  19 /* #define DEBUG_WIN */
  20 #include "debug.h"
  21
  22 /* ----- external functions ----- */
  23
  24 void    FOCUS_SwitchFocus( HWND , HWND );
  25
  26 /* ----- internal variables ----- */
  27
  28 static HWND hwndActive      = 0;  /* Currently active window */
  29 static HWND hwndPrevActive  = 0;  /* Previously active window */
  30
  31 extern HANDLE hActiveQ_G;               /* from message.c */
  32
  33
  34 /***********************************************************************
  35  *           WINPOS_FindIconPos
  36  *
  37  * Find a suitable place for an iconic window.
  38  * The new position is stored into wndPtr->ptIconPos.
  39  */
  40 void WINPOS_FindIconPos( HWND hwnd )
  41 {
  42     RECT rectParent;
  43     short x, y, xspacing, yspacing;
  44     WND * wndPtr = WIN_FindWndPtr( hwnd );
  45
  46     if (!wndPtr) return;
  47     GetClientRect( wndPtr->hwndParent, &rectParent );
  48     if ((wndPtr->ptIconPos.x >= rectParent.left) &&
  49         (wndPtr->ptIconPos.x + SYSMETRICS_CXICON < rectParent.right) &&
  50         (wndPtr->ptIconPos.y >= rectParent.top) &&
  51         (wndPtr->ptIconPos.y + SYSMETRICS_CYICON < rectParent.bottom))
  52         return;  /* The icon already has a suitable position */
  53
  54     xspacing = yspacing = 70;  /* FIXME: This should come from WIN.INI */
  55     y = rectParent.bottom;
  56     for (;;)
  57     {
  58         for (x = rectParent.left; x<=rectParent.right-xspacing; x += xspacing)
  59         {
  60               /* Check if another icon already occupies this spot */
  61             HWND hwndChild = GetWindow( wndPtr->hwndParent, GW_CHILD );
  62             while (hwndChild)
  63             {
  64                 WND *childPtr = WIN_FindWndPtr( hwndChild );
  65                 if ((childPtr->dwStyle & WS_MINIMIZE) && (hwndChild != hwnd))
  66                 {
  67                     if ((childPtr->rectWindow.left < x + xspacing) &&
  68                         (childPtr->rectWindow.right >= x) &&
  69                         (childPtr->rectWindow.top <= y) &&
  70                         (childPtr->rectWindow.bottom > y - yspacing))
  71                         break;  /* There's a window in there */
  72                 }
  73
  74                 hwndChild = childPtr->hwndNext;
  75             }
  76             if (!hwndChild)
  77             {
  78                   /* No window was found, so it's OK for us */
  79                 wndPtr->ptIconPos.x = x + (xspacing - SYSMETRICS_CXICON) / 2;
  80                 wndPtr->ptIconPos.y = y - (yspacing + SYSMETRICS_CYICON) / 2;
  81                 return;
  82             }
  83         }
  84         y -= yspacing;
  85     }
  86 }
  87
  88
  89 /***********************************************************************
  90  *           ArrangeIconicWindows   (USER.170)
  91  */
  92 WORD ArrangeIconicWindows( HWND parent )
  93 {
  94     RECT rectParent;
  95     HWND hwndChild;
  96     short x, y, xspacing, yspacing;
  97
  98     GetClientRect( parent, &rectParent );
  99     x = rectParent.left;
 100     y = rectParent.bottom;
 101     xspacing = yspacing = 70;  /* FIXME: This should come from WIN.INI */
 102     hwndChild = GetWindow( parent, GW_CHILD );
 103     while (hwndChild)
 104     {
 105         if (IsIconic( hwndChild ))
 106         {
 107             SetWindowPos( hwndChild, 0, x + (xspacing - SYSMETRICS_CXICON) / 2,
 108                           y - (yspacing + SYSMETRICS_CYICON) / 2, 0, 0,
 109                           SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 110             if (x <= rectParent.right - xspacing) x += xspacing;
 111             else
 112             {
 113                 x = rectParent.left;
 114                 y -= yspacing;
 115             }
 116         }
 117         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 118     }
 119     return yspacing;
 120 }
 121
 122
 123 /***********************************************************************
 124  *           GetWindowRect   (USER.32)
 125  */
 126 void GetWindowRect( HWND hwnd, LPRECT rect )
 127 {
 128     WND * wndPtr = WIN_FindWndPtr( hwnd );
 129     if (!wndPtr) return;
 130
 131     *rect = wndPtr->rectWindow;
 132     if (wndPtr->dwStyle & WS_CHILD)
 133         MapWindowPoints( wndPtr->hwndParent, 0, (POINT *)rect, 2 );
 134 }
 135
 136
 137 /***********************************************************************
 138  *           GetClientRect   (USER.33)
 139  */
 140 void GetClientRect( HWND hwnd, LPRECT rect )
 141 {
 142     WND * wndPtr = WIN_FindWndPtr( hwnd );
 143
 144     rect->left = rect->top = rect->right = rect->bottom = 0;
 145     if (wndPtr)
 146     {
 147         rect->right  = wndPtr->rectClient.right - wndPtr->rectClient.left;
 148         rect->bottom = wndPtr->rectClient.bottom - wndPtr->rectClient.top;
 149     }
 150 }
 151
 152
 153 /*******************************************************************
 154  *         ClientToScreen   (USER.28)
 155  */
 156 void ClientToScreen( HWND hwnd, LPPOINT lppnt )
 157 {
 158     MapWindowPoints( hwnd, 0, lppnt, 1 );
 159 }
 160
 161
 162 /*******************************************************************
 163  *         ScreenToClient   (USER.29)
 164  */
 165 void ScreenToClient( HWND hwnd, LPPOINT lppnt )
 166 {
 167     MapWindowPoints( 0, hwnd, lppnt, 1 );
 168 }
 169
 170
 171 /*******************************************************************
 172  *         WindowFromPoint   (USER.30)
 173  */
 174 HWND WindowFromPoint( POINT pt )
 175 {
 176     HWND hwndRet = 0;
 177     HWND hwnd = GetDesktopWindow();
 178
 179     while(hwnd)
 180     {
 181           /* If point is in window, and window is visible,   */
 182           /* not disabled and not transparent, then explore  */
 183           /* its children. Otherwise, go to the next window. */
 184
 185         WND *wndPtr = WIN_FindWndPtr( hwnd );
 186         if ((pt.x >= wndPtr->rectWindow.left) &&
 187             (pt.x < wndPtr->rectWindow.right) &&
 188             (pt.y >= wndPtr->rectWindow.top) &&
 189             (pt.y < wndPtr->rectWindow.bottom) &&
 190             !(wndPtr->dwStyle & WS_DISABLED) &&
 191             (wndPtr->dwStyle & WS_VISIBLE) &&
 192             !(wndPtr->dwExStyle & WS_EX_TRANSPARENT))
 193         {
 194             hwndRet = hwnd;
 195               /* If window is minimized, ignore its children */
 196             if (wndPtr->dwStyle & WS_MINIMIZE) break;
 197             pt.x -= wndPtr->rectClient.left;
 198             pt.y -= wndPtr->rectClient.top;
 199             hwnd = wndPtr->hwndChild;
 200         }
 201         else hwnd = wndPtr->hwndNext;
 202     }
 203     return hwndRet;
 204 }
 205
 206
 207 /*******************************************************************
 208  *         ChildWindowFromPoint   (USER.191)
 209  */
 210 HWND ChildWindowFromPoint( HWND hwndParent, POINT pt )
 211 {
 212     RECT rect;
 213     HWND hwnd;
 214
 215     GetWindowRect( hwndParent, &rect );
 216     if (!PtInRect( &rect, pt )) return 0;
 217     hwnd = GetTopWindow( hwndParent );
 218     while (hwnd)
 219     {
 220         GetWindowRect( hwnd, &rect );
 221         if (PtInRect( &rect, pt )) return hwnd;
 222         hwnd = GetWindow( hwnd, GW_HWNDNEXT );
 223     }
 224     return hwndParent;
 225 }
 226
 227
 228 /*******************************************************************
 229  *         MapWindowPoints   (USER.258)
 230  */
 231 void MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, WORD count )
 232 {
 233     WND * wndPtr;
 234     POINT * curpt;
 235     POINT origin = { 0, 0 };
 236     WORD i;
 237
 238       /* Translate source window origin to screen coords */
 239     while(hwndFrom)
 240     {
 241         if (!(wndPtr = WIN_FindWndPtr( hwndFrom )))
 242         {
 243             fprintf( stderr, "MapWindowPoints: bad hwndFrom = "NPFMT"\n",
 244                      hwndFrom);
 245             return;
 246         }
 247         origin.x += wndPtr->rectClient.left;
 248         origin.y += wndPtr->rectClient.top;
 249         hwndFrom = (wndPtr->dwStyle & WS_CHILD) ? wndPtr->hwndParent : 0;
 250     }
 251
 252       /* Translate origin to destination window coords */
 253     while(hwndTo)
 254     {
 255         if (!(wndPtr = WIN_FindWndPtr( hwndTo )))
 256         {
 257             fprintf(stderr,"MapWindowPoints: bad hwndTo = "NPFMT"\n", hwndTo );
 258             return;
 259         }
 260         origin.x -= wndPtr->rectClient.left;
 261         origin.y -= wndPtr->rectClient.top;
 262         hwndTo = (wndPtr->dwStyle & WS_CHILD) ? wndPtr->hwndParent : 0;
 263     }
 264
 265       /* Translate points */
 266     for (i = 0, curpt = lppt; i < count; i++, curpt++)
 267     {
 268         curpt->x += origin.x;
 269         curpt->y += origin.y;
 270     }
 271 }
 272
 273
 274 /***********************************************************************
 275  *           IsIconic   (USER.31)
 276  */
 277 BOOL IsIconic(HWND hWnd)
 278 {
 279     WND * wndPtr = WIN_FindWndPtr(hWnd);
 280     if (wndPtr == NULL) return FALSE;
 281     return (wndPtr->dwStyle & WS_MINIMIZE) != 0;
 282 }
 283
 284
 285 /***********************************************************************
 286  *           IsZoomed   (USER.272)
 287  */
 288 BOOL IsZoomed(HWND hWnd)
 289 {
 290     WND * wndPtr = WIN_FindWndPtr(hWnd);
 291     if (wndPtr == NULL) return FALSE;
 292     return (wndPtr->dwStyle & WS_MAXIMIZE) != 0;
 293 }
 294
 295
 296 /*******************************************************************
 297  *         GetActiveWindow    (USER.60)
 298  */
 299 HWND GetActiveWindow()
 300 {
 301     return hwndActive;
 302 }
 303
 304
 305 /*******************************************************************
 306  *         SetActiveWindow    (USER.59)
 307  */
 308 HWND SetActiveWindow( HWND hwnd )
 309 {
 310     HWND prev = hwndActive;
 311     WND *wndPtr = WIN_FindWndPtr( hwnd );
 312
 313     if (!wndPtr || (wndPtr->dwStyle & WS_DISABLED) ||
 314         !(wndPtr->dwStyle & WS_VISIBLE)) return 0;
 315
 316     WINPOS_SetActiveWindow( hwnd, 0, 0 );
 317     return prev;
 318 }
 319
 320
 321 /***********************************************************************
 322  *           BringWindowToTop   (USER.45)
 323  */
 324 BOOL BringWindowToTop( HWND hwnd )
 325 {
 326     return SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE );
 327 }
 328
 329
 330 /***********************************************************************
 331  *           MoveWindow   (USER.56)
 332  */
 333 BOOL MoveWindow( HWND hwnd, short x, short y, short cx, short cy, BOOL repaint)
 334 {
 335     int flags = SWP_NOZORDER | SWP_NOACTIVATE;
 336     if (!repaint) flags |= SWP_NOREDRAW;
 337     dprintf_win(stddeb, "MoveWindow: "NPFMT" %d,%d %dx%d %d\n",
 338             hwnd, x, y, cx, cy, repaint );
 339     return SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
 340 }
 341
 342
 343 /***********************************************************************
 344  *           ShowWindow   (USER.42)
 345  */
 346 BOOL ShowWindow( HWND hwnd, int cmd )
 347 {
 348     WND * wndPtr = WIN_FindWndPtr( hwnd );
 349     BOOL wasVisible;
 350     POINT maxSize;
 351     int swpflags = 0;
 352     short x = 0, y = 0, cx = 0, cy = 0;
 353
 354     if (!wndPtr) return FALSE;
 355
 356     dprintf_win(stddeb,"ShowWindow: hwnd="NPFMT", cmd=%d\n", hwnd, cmd);
 357
 358     wasVisible = (wndPtr->dwStyle & WS_VISIBLE) != 0;
 359
 360     switch(cmd)
 361     {
 362         case SW_HIDE:
 363             swpflags |= SWP_HIDEWINDOW | SWP_NOSIZE | SWP_NOMOVE |
 364                         SWP_NOACTIVATE | SWP_NOZORDER;
 365             break;
 366
 367         case SW_SHOWMINNOACTIVE:
 368             swpflags |= SWP_NOACTIVATE | SWP_NOZORDER;
 369             /* fall through */
 370         case SW_SHOWMINIMIZED:
 371             swpflags |= SWP_SHOWWINDOW;
 372             /* fall through */
 373         case SW_MINIMIZE:
 374             swpflags |= SWP_FRAMECHANGED;
 375             if (!(wndPtr->dwStyle & WS_MINIMIZE))
 376             {
 377                 if (wndPtr->dwStyle & WS_MAXIMIZE)
 378                 {
 379                     wndPtr->flags |= WIN_RESTORE_MAX;
 380                     wndPtr->dwStyle &= ~WS_MAXIMIZE;
 381                 }
 382                 else
 383                 {
 384                     wndPtr->flags &= ~WIN_RESTORE_MAX;
 385                     wndPtr->rectNormal = wndPtr->rectWindow;
 386                 }
 387                 wndPtr->dwStyle |= WS_MINIMIZE;
 388                 WINPOS_FindIconPos( hwnd );
 389                 x  = wndPtr->ptIconPos.x;
 390                 y  = wndPtr->ptIconPos.y;
 391                 cx = SYSMETRICS_CXICON;
 392                 cy = SYSMETRICS_CYICON;
 393             }
 394             else swpflags |= SWP_NOSIZE | SWP_NOMOVE;
 395             break;
 396
 397         case SW_SHOWMAXIMIZED: /* same as SW_MAXIMIZE: */
 398             swpflags |= SWP_SHOWWINDOW | SWP_FRAMECHANGED;
 399             if (!(wndPtr->dwStyle & WS_MAXIMIZE))
 400             {
 401                   /* Store the current position and find the maximized size */
 402                 if (!(wndPtr->dwStyle & WS_MINIMIZE))
 403                     wndPtr->rectNormal = wndPtr->rectWindow;
 404
 405                 NC_GetMinMaxInfo( hwnd, &maxSize,
 406                                   &wndPtr->ptMaxPos, NULL, NULL );
 407                 x  = wndPtr->ptMaxPos.x;
 408                 y  = wndPtr->ptMaxPos.y;
 409
 410                 if( wndPtr->dwStyle & WS_MINIMIZE )
 411                     if( !SendMessage( hwnd, WM_QUERYOPEN, 0, 0L ) )
 412                         {
 413                          swpflags |= SWP_NOSIZE;
 414                          break;
 415                         }
 416
 417                 cx = maxSize.x;
 418                 cy = maxSize.y;
 419                 wndPtr->dwStyle &= ~WS_MINIMIZE;
 420                 wndPtr->dwStyle |= WS_MAXIMIZE;
 421             }
 422             else swpflags |= SWP_NOSIZE | SWP_NOMOVE;
 423             break;
 424
 425         case SW_SHOWNA:
 426             swpflags |= SWP_NOACTIVATE | SWP_NOZORDER;
 427             /* fall through */
 428         case SW_SHOW:
 429             swpflags |= SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE;
 430             break;
 431
 432         case SW_SHOWNOACTIVATE:
 433             swpflags |= SWP_NOZORDER;
 434             if (GetActiveWindow()) swpflags |= SWP_NOACTIVATE;
 435             /* fall through */
 436         case SW_SHOWNORMAL:  /* same as SW_NORMAL: */
 437         case SW_RESTORE:
 438             swpflags |= SWP_SHOWWINDOW | SWP_FRAMECHANGED;
 439
 440             if (wndPtr->dwStyle & WS_MINIMIZE)
 441             {
 442                 if( !SendMessage( hwnd, WM_QUERYOPEN, 0, 0L) )
 443                   {
 444                     swpflags |= SWP_NOSIZE;
 445                     break;
 446                   }
 447                 wndPtr->ptIconPos.x = wndPtr->rectWindow.left;
 448                 wndPtr->ptIconPos.y = wndPtr->rectWindow.top;
 449                 wndPtr->dwStyle &= ~WS_MINIMIZE;
 450                 if (wndPtr->flags & WIN_RESTORE_MAX)
 451                 {
 452                     /* Restore to maximized position */
 453                     NC_GetMinMaxInfo( hwnd, &maxSize, &wndPtr->ptMaxPos,
 454                                       NULL, NULL );
 455                     x  = wndPtr->ptMaxPos.x;
 456                     y  = wndPtr->ptMaxPos.y;
 457                     cx = maxSize.x;
 458                     cy = maxSize.y;
 459                    wndPtr->dwStyle |= WS_MAXIMIZE;
 460                 }
 461                 else  /* Restore to normal position */
 462                 {
 463                     x  = wndPtr->rectNormal.left;
 464                     y  = wndPtr->rectNormal.top;
 465                     cx = wndPtr->rectNormal.right - wndPtr->rectNormal.left;
 466                     cy = wndPtr->rectNormal.bottom - wndPtr->rectNormal.top;
 467                 }
 468             }
 469             else if (wndPtr->dwStyle & WS_MAXIMIZE)
 470             {
 471                 wndPtr->ptMaxPos.x = wndPtr->rectWindow.left;
 472                 wndPtr->ptMaxPos.y = wndPtr->rectWindow.top;
 473                 wndPtr->dwStyle &= ~WS_MAXIMIZE;
 474                 x  = wndPtr->rectNormal.left;
 475                 y  = wndPtr->rectNormal.top;
 476                 cx = wndPtr->rectNormal.right - wndPtr->rectNormal.left;
 477                 cy = wndPtr->rectNormal.bottom - wndPtr->rectNormal.top;
 478             }
 479             else swpflags |= SWP_NOSIZE | SWP_NOMOVE;
 480             break;
 481     }
 482
 483     SendMessage( hwnd, WM_SHOWWINDOW, (cmd != SW_HIDE), 0 );
 484     SetWindowPos( hwnd, HWND_TOP, x, y, cx, cy, swpflags );
 485
 486       /* Send WM_SIZE and WM_MOVE messages if not already done */
 487     if (!(wndPtr->flags & WIN_GOT_SIZEMSG))
 488     {
 489         int wParam = SIZE_RESTORED;
 490         if (wndPtr->dwStyle & WS_MAXIMIZE) wParam = SIZE_MAXIMIZED;
 491         else if (wndPtr->dwStyle & WS_MINIMIZE) wParam = SIZE_MINIMIZED;
 492         wndPtr->flags |= WIN_GOT_SIZEMSG;
 493         SendMessage( hwnd, WM_SIZE, wParam,
 494                      MAKELONG(wndPtr->rectClient.right-wndPtr->rectClient.left,
 495                             wndPtr->rectClient.bottom-wndPtr->rectClient.top));
 496         SendMessage( hwnd, WM_MOVE, 0,
 497                    MAKELONG(wndPtr->rectClient.left, wndPtr->rectClient.top) );
 498     }
 499
 500     return wasVisible;
 501 }
 502
 503
 504 /***********************************************************************
 505  *           GetInternalWindowPos   (USER.460)
 506  */
 507 WORD GetInternalWindowPos( HWND hwnd, LPRECT rectWnd, LPPOINT ptIcon )
 508 {
 509     WINDOWPLACEMENT wndpl;
 510     if (!GetWindowPlacement( hwnd, &wndpl )) return 0;
 511     if (rectWnd) *rectWnd = wndpl.rcNormalPosition;
 512     if (ptIcon)  *ptIcon = wndpl.ptMinPosition;
 513     return wndpl.showCmd;
 514 }
 515
 516
 517 /***********************************************************************
 518  *           SetInternalWindowPos   (USER.461)
 519  */
 520 void SetInternalWindowPos( HWND hwnd, WORD showCmd, LPRECT rect, LPPOINT pt )
 521 {
 522     WINDOWPLACEMENT wndpl;
 523     WND *wndPtr = WIN_FindWndPtr( hwnd );
 524
 525     wndpl.length  = sizeof(wndpl);
 526     wndpl.flags   = (pt != NULL) ? WPF_SETMINPOSITION : 0;
 527     wndpl.showCmd = showCmd;
 528     if (pt) wndpl.ptMinPosition = *pt;
 529     wndpl.rcNormalPosition = (rect != NULL) ? *rect : wndPtr->rectNormal;
 530     wndpl.ptMaxPosition = wndPtr->ptMaxPos;
 531     SetWindowPlacement( hwnd, &wndpl );
 532 }
 533
 534
 535 /***********************************************************************
 536  *           GetWindowPlacement   (USER.370)
 537  */
 538 BOOL GetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 539 {
 540     WND *wndPtr = WIN_FindWndPtr( hwnd );
 541     if (!wndPtr) return FALSE;
 542
 543     wndpl->length  = sizeof(*wndpl);
 544     wndpl->flags   = 0;
 545     wndpl->showCmd = IsZoomed(hwnd) ? SW_SHOWMAXIMIZED :
 546                      (IsIconic(hwnd) ? SW_SHOWMINIMIZED : SW_SHOWNORMAL);
 547     wndpl->ptMinPosition = wndPtr->ptIconPos;
 548     wndpl->ptMaxPosition = wndPtr->ptMaxPos;
 549     wndpl->rcNormalPosition = wndPtr->rectNormal;
 550     return TRUE;
 551 }
 552
 553
 554 /***********************************************************************
 555  *           SetWindowPlacement   (USER.371)
 556  */
 557 BOOL SetWindowPlacement( HWND hwnd, WINDOWPLACEMENT *wndpl )
 558 {
 559     WND *wndPtr = WIN_FindWndPtr( hwnd );
 560     if (!wndPtr) return FALSE;
 561
 562     if (wndpl->flags & WPF_SETMINPOSITION)
 563         wndPtr->ptIconPos = wndpl->ptMinPosition;
 564     if ((wndpl->flags & WPF_RESTORETOMAXIMIZED) &&
 565         (wndpl->showCmd == SW_SHOWMINIMIZED)) wndPtr->flags |= WIN_RESTORE_MAX;
 566     wndPtr->ptMaxPos   = wndpl->ptMaxPosition;
 567     wndPtr->rectNormal = wndpl->rcNormalPosition;
 568     ShowWindow( hwnd, wndpl->showCmd );
 569     return TRUE;
 570 }
 571
 572 /*******************************************************************
 573  *         ACTIVATEAPP_callback
 574  */
 575 BOOL ACTIVATEAPP_callback(HWND hWnd, LPARAM lParam)
 576 {
 577     ACTIVATESTRUCT  *lpActStruct = (ACTIVATESTRUCT*)lParam;
 578     WND             *wndPtr = WIN_FindWndPtr( hWnd );
 579
 580     if( !wndPtr || hWnd == GetDesktopWindow()) return 1;
 581
 582     if( MSG_GetQueueTask(wndPtr->hmemTaskQ) != lpActStruct->hTaskSendTo )
 583         return 1;
 584
 585     SendMessage( hWnd, WM_ACTIVATEAPP, lpActStruct->wFlag,
 586                 (LPARAM)(lpActStruct->hWindowTask)?lpActStruct->hWindowTask:0);
 587     return 1;
 588 }
 589
 590
 591 /*******************************************************************
 592  *         WINPOS_SetActiveWindow
 593  *
 594  * back-end to SetActiveWindow
 595  */
 596 BOOL WINPOS_SetActiveWindow( HWND hWnd, BOOL fMouse, BOOL fChangeFocus )
 597 {
 598     WND                   *wndPtr          = WIN_FindWndPtr(hWnd);
 599     WND                   *wndTemp         = WIN_FindWndPtr(hwndActive);
 600     CBTACTIVATESTRUCT      cbtStruct       = { fMouse , hwndActive };
 601     FARPROC                enumCallback    = (FARPROC)GetWndProcEntry16("ActivateAppProc");
 602     ACTIVATESTRUCT         actStruct;
 603     WORD                   wIconized=0,wRet= 0;
 604
 605     /* paranoid checks */
 606     if( !hWnd || hWnd == GetDesktopWindow() || hWnd == hwndActive )
 607         return 0;
 608
 609     if( GetTaskQueue(0) != wndPtr->hmemTaskQ )
 610         return 0;
 611
 612     if( wndTemp )
 613         wIconized = HIWORD(wndTemp->dwStyle & WS_MINIMIZE);
 614     else
 615         dprintf_win(stddeb,"WINPOS_ActivateWindow: no current active window.\n");
 616
 617     /* call CBT hook chain */
 618     wRet = HOOK_CallHooks(WH_CBT, HCBT_ACTIVATE, hWnd,
 619                           (LPARAM)MAKE_SEGPTR(&cbtStruct));
 620
 621     if( wRet ) return wRet;
 622
 623     /* set prev active wnd to current active wnd and send notification */
 624     if( (hwndPrevActive = hwndActive) )
 625     {
 626         if( !SendMessage(hwndPrevActive, WM_NCACTIVATE, 0, MAKELONG(hWnd,wIconized)) )
 627         {
 628             if (GetSysModalWindow() != hWnd) return 0;
 629             /* disregard refusal if hWnd is sysmodal */
 630         }
 631
 632 #ifdef WINELIB32
 633         SendMessage( hwndActive, WM_ACTIVATE,
 634                      MAKEWPARAM( WA_INACTIVE, wIconized ),
 635                      (LPARAM)hWnd );
 636 #else
 637         SendMessage(hwndPrevActive, WM_ACTIVATE, WA_INACTIVE,
 638                     MAKELONG(hWnd,wIconized));
 639 #endif
 640
 641         /* check if something happened during message processing */
 642         if( hwndPrevActive != hwndActive ) return 0;
 643     }
 644
 645     /* set active wnd */
 646     hwndActive = hWnd;
 647
 648     /* send palette messages */
 649     if( SendMessage( hWnd, WM_QUERYNEWPALETTE, 0, 0L) )
 650         SendMessage((HWND)-1, WM_PALETTEISCHANGING, hWnd, 0L );
 651
 652     /* if prev wnd is minimized redraw icon title
 653   if( hwndPrevActive )
 654     {
 655         wndTemp = WIN_FindWndPtr( WIN_GetTopParent( hwndPrevActive ) );
 656         if(wndTemp)
 657           if(wndTemp->dwStyle & WS_MINIMIZE)
 658             RedrawIconTitle(hwndPrevActive);
 659       }
 660   */
 661     if (!(wndPtr->dwStyle & WS_CHILD) )
 662     {
 663         /* check Z-order and bring hWnd to the top */
 664         wndTemp = WIN_FindWndPtr( GetDesktopWindow() );
 665
 666         for( ; wndTemp; wndTemp = WIN_FindWndPtr( wndTemp->hwndNext ))
 667             if( wndTemp->dwStyle & WS_VISIBLE )
 668                 break;
 669
 670         if( wndTemp != wndPtr )
 671             SetWindowPos(hWnd, HWND_TOP, 0,0,0,0,
 672                          SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE );
 673     }
 674
 675     if( !IsWindow(hWnd) ) return 0;
 676
 677     /* send WM_ACTIVATEAPP if necessary */
 678     if( hActiveQ_G != wndPtr->hmemTaskQ )
 679     {
 680         HTASK hT = MSG_GetQueueTask( hActiveQ_G );
 681
 682         actStruct.wFlag = 0;                  /* deactivate */
 683         actStruct.hWindowTask = MSG_GetQueueTask(wndPtr->hmemTaskQ);
 684         actStruct.hTaskSendTo = hT;
 685
 686         /* send WM_ACTIVATEAPP to top-level windows
 687          * that belong to the actStruct.hTaskSendTo task
 688          */
 689         EnumWindows( enumCallback , (LPARAM)&actStruct );
 690
 691         /* change active queue */
 692         hActiveQ_G = wndPtr->hmemTaskQ;
 693
 694         actStruct.wFlag = 1;                  /* activate */
 695         actStruct.hWindowTask = hT;
 696         actStruct.hTaskSendTo = MSG_GetQueueTask( hActiveQ_G );
 697
 698         EnumWindows( enumCallback , (LPARAM)&actStruct );
 699
 700         if( !IsWindow(hWnd) ) return 0;
 701     }
 702
 703     /* walk up to the first unowned window */
 704     wndTemp = wndPtr;
 705
 706     while(wndTemp->hwndOwner)
 707     {
 708         wndTemp = WIN_FindWndPtr(wndTemp->hwndOwner);
 709         if( !wndTemp)
 710         {
 711             /* there must be an unowned window in hierarchy */
 712             dprintf_win(stddeb,"WINPOS_ActivateWindow: broken owner list\n");
 713             wndTemp = wndPtr;
 714             break;
 715         }
 716     }
 717     /* and set last active owned popup */
 718     wndTemp->hwndLastActive = hWnd;
 719
 720     wIconized = HIWORD(wndTemp->dwStyle & WS_MINIMIZE);
 721     SendMessage( hWnd, WM_NCACTIVATE, 1,
 722                  MAKELONG(hwndPrevActive,wIconized));
 723 #ifdef WINELIB32
 724     SendMessage( hWnd, WM_ACTIVATE,
 725                  MAKEWPARAM( (fMouse)?WA_CLICKACTIVE:WA_ACTIVE, wIconized),
 726                  (LPARAM)hwndPrevActive );
 727 #else
 728     SendMessage( hWnd, WM_ACTIVATE, (fMouse)? WA_CLICKACTIVE : WA_ACTIVE,
 729                  MAKELONG(hwndPrevActive,wIconized));
 730 #endif
 731
 732     if( !IsWindow(hWnd) ) return 0;
 733
 734     /* change focus if possible */
 735     if( fChangeFocus && GetFocus() )
 736         if( WIN_GetTopParent(GetFocus()) != hwndActive )
 737             FOCUS_SwitchFocus( GetFocus(),
 738                                (wndPtr->dwStyle & WS_MINIMIZE)? 0: hwndActive);
 739
 740     /* if active wnd is minimized redraw icon title
 741   if( hwndActive )
 742       {
 743         wndPtr = WIN_FindWndPtr(hwndActive);
 744         if(wndPtr->dwStyle & WS_MINIMIZE)
 745            RedrawIconTitle(hwndActive);
 746     }
 747   */
 748     return (hWnd == hwndActive);
 749 }
 750
 751
 752 /*******************************************************************
 753  *         WINPOS_ChangeActiveWindow
 754  *
 755  */
 756 HWND WINPOS_ChangeActiveWindow( HWND hWnd, BOOL mouseMsg )
 757 {
 758     WND *wndPtr = WIN_FindWndPtr(hWnd);
 759
 760     if( !wndPtr ) return  0;
 761
 762     /* minors are not allowed */
 763     if( (wndPtr->dwStyle & WS_CHILD) && !( wndPtr->dwStyle & WS_POPUP))
 764         return SendMessage(hWnd, WM_CHILDACTIVATE, 0, 0L);
 765
 766     if( hWnd == hwndActive ) return 0;
 767
 768     if( !WINPOS_SetActiveWindow(hWnd ,mouseMsg ,TRUE) )
 769         return 0;
 770
 771     /* switch desktop queue to current active here */
 772     if( wndPtr->hwndParent == GetDesktopWindow())
 773     { }
 774
 775     return 1;
 776 }
 777
 778
 779 /***********************************************************************
 780  *           WINPOS_SendNCCalcSize
 781  *
 782  * Send a WM_NCCALCSIZE message to a window.
 783  * All parameters are read-only except newClientRect.
 784  * oldWindowRect, oldClientRect and winpos must be non-NULL only
 785  * when calcValidRect is TRUE.
 786  */
 787 LONG WINPOS_SendNCCalcSize( HWND hwnd, BOOL calcValidRect, RECT *newWindowRect,
 788                             RECT *oldWindowRect, RECT *oldClientRect,
 789                             WINDOWPOS *winpos, RECT *newClientRect )
 790 {
 791     NCCALCSIZE_PARAMS params;
 792     LONG result;
 793
 794     params.rgrc[0] = *newWindowRect;
 795     if (calcValidRect)
 796     {
 797         params.rgrc[1] = *oldWindowRect;
 798         params.rgrc[2] = *oldClientRect;
 799         params.lppos = winpos;
 800     }
 801     result = SendMessage( hwnd, WM_NCCALCSIZE, calcValidRect,
 802                           MAKE_SEGPTR( &params ) );
 803     dprintf_win(stddeb, "WINPOS_SendNCCalcSize: %d %d %d %d\n",
 804                 params.rgrc[0].top,    params.rgrc[0].left,
 805                 params.rgrc[0].bottom, params.rgrc[0].right);
 806     *newClientRect = params.rgrc[0];
 807     return result;
 808 }
 809
 810
 811 /***********************************************************************
 812  *           WINPOS_HandleWindowPosChanging
 813  *
 814  * Default handling for a WM_WINDOWPOSCHANGING. Called from DefWindowProc().
 815  */
 816 LONG WINPOS_HandleWindowPosChanging( WINDOWPOS *winpos )
 817 {
 818     POINT maxSize;
 819     WND *wndPtr = WIN_FindWndPtr( winpos->hwnd );
 820     if (!wndPtr || (winpos->flags & SWP_NOSIZE)) return 0;
 821     if ((wndPtr->dwStyle & WS_THICKFRAME) ||
 822         ((wndPtr->dwStyle & (WS_POPUP | WS_CHILD)) == 0))
 823     {
 824         NC_GetMinMaxInfo( winpos->hwnd, &maxSize, NULL, NULL, NULL );
 825         winpos->cx = MIN( winpos->cx, maxSize.x );
 826         winpos->cy = MIN( winpos->cy, maxSize.y );
 827     }
 828     return 0;
 829 }
 830
 831
 832 /***********************************************************************
 833  *           WINPOS_MoveWindowZOrder
 834  *
 835  * Move a window in Z order, invalidating everything that needs it.
 836  * Only necessary for windows without associated X window.
 837  */
 838 static void WINPOS_MoveWindowZOrder( HWND hwnd, HWND hwndAfter )
 839 {
 840     BOOL movingUp;
 841     HWND hwndCur;
 842     WND *wndPtr = WIN_FindWndPtr( hwnd );
 843
 844     /* We have two possible cases:
 845      * - The window is moving up: we have to invalidate all areas
 846      *   of the window that were covered by other windows
 847      * - The window is moving down: we have to invalidate areas
 848      *   of other windows covered by this one.
 849      */
 850
 851     if (hwndAfter == HWND_TOP)
 852     {
 853         movingUp = TRUE;
 854     }
 855     else if (hwndAfter == HWND_BOTTOM)
 856     {
 857         if (!wndPtr->hwndNext) return;  /* Already at the bottom */
 858         movingUp = FALSE;
 859     }
 860     else
 861     {
 862         if (wndPtr->hwndNext == hwndAfter) return;  /* Already placed right */
 863
 864           /* Determine which window we encounter first in Z-order */
 865         hwndCur = GetWindow( wndPtr->hwndParent, GW_CHILD );
 866         while ((hwndCur != hwnd) && (hwndCur != hwndAfter))
 867             hwndCur = GetWindow( hwndCur, GW_HWNDNEXT );
 868         movingUp = (hwndCur == hwndAfter);
 869     }
 870
 871     if (movingUp)
 872     {
 873         HWND hwndPrevAfter = wndPtr->hwndNext;
 874         WIN_UnlinkWindow( hwnd );
 875         WIN_LinkWindow( hwnd, hwndAfter );
 876         hwndCur = wndPtr->hwndNext;
 877         while (hwndCur != hwndPrevAfter)
 878         {
 879             WND *curPtr = WIN_FindWndPtr( hwndCur );
 880             RECT rect = curPtr->rectWindow;
 881             OffsetRect( &rect, -wndPtr->rectClient.left,
 882                         -wndPtr->rectClient.top );
 883             RedrawWindow( hwnd, &rect, 0, RDW_INVALIDATE | RDW_ALLCHILDREN |
 884                           RDW_FRAME | RDW_ERASE );
 885             hwndCur = curPtr->hwndNext;
 886         }
 887     }
 888     else  /* Moving down */
 889     {
 890         hwndCur = wndPtr->hwndNext;
 891         WIN_UnlinkWindow( hwnd );
 892         WIN_LinkWindow( hwnd, hwndAfter );
 893         while (hwndCur != hwnd)
 894         {
 895             WND *curPtr = WIN_FindWndPtr( hwndCur );
 896             RECT rect = wndPtr->rectWindow;
 897             OffsetRect( &rect, -curPtr->rectClient.left,
 898                         -curPtr->rectClient.top );
 899             RedrawWindow( hwndCur, &rect, 0, RDW_INVALIDATE | RDW_ALLCHILDREN |
 900                           RDW_FRAME | RDW_ERASE );
 901             hwndCur = curPtr->hwndNext;
 902         }
 903     }
 904 }
 905
 906
 907 /***********************************************************************
 908  *           WINPOS_SetXWindowPos
 909  *
 910  * SetWindowPos() for an X window. Used by the real SetWindowPos().
 911  */
 912 static void WINPOS_SetXWindowPos( WINDOWPOS *winpos )
 913 {
 914     XWindowChanges winChanges;
 915     int changeMask = 0;
 916     WND *wndPtr = WIN_FindWndPtr( winpos->hwnd );
 917
 918     if (!(winpos->flags & SWP_NOSIZE))
 919     {
 920         winChanges.width     = winpos->cx;
 921         winChanges.height    = winpos->cy;
 922         changeMask |= CWWidth | CWHeight;
 923     }
 924     if (!(winpos->flags & SWP_NOMOVE))
 925     {
 926         winChanges.x = winpos->x;
 927         winChanges.y = winpos->y;
 928         changeMask |= CWX | CWY;
 929     }
 930     if (!(winpos->flags & SWP_NOZORDER))
 931     {
 932         if (winpos->hwndInsertAfter == HWND_TOP) winChanges.stack_mode = Above;
 933         else winChanges.stack_mode = Below;
 934         if ((winpos->hwndInsertAfter != HWND_TOP) &&
 935             (winpos->hwndInsertAfter != HWND_BOTTOM))
 936         {
 937             WND * insertPtr = WIN_FindWndPtr( winpos->hwndInsertAfter );
 938             winChanges.sibling = insertPtr->window;
 939             changeMask |= CWSibling;
 940         }
 941         changeMask |= CWStackMode;
 942     }
 943     if (changeMask)
 944         XConfigureWindow( display, wndPtr->window, changeMask, &winChanges );
 945 }
 946
 947
 948 /***********************************************************************
 949  *           SetWindowPos   (USER.232)
 950  */
 951 BOOL SetWindowPos( HWND hwnd, HWND hwndInsertAfter, INT x, INT y,
 952                    INT cx, INT cy, WORD flags )
 953 {
 954     WINDOWPOS winpos;
 955     WND *wndPtr;
 956     RECT newWindowRect, newClientRect;
 957     int result;
 958
 959       /* Check window handle */
 960
 961     if (hwnd == GetDesktopWindow()) return FALSE;
 962     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 963
 964       /* Check dimensions */
 965
 966     if (cx <= 0) cx = 1;
 967     if (cy <= 0) cy = 1;
 968
 969       /* Check flags */
 970
 971     if (hwnd == hwndActive) flags |= SWP_NOACTIVATE;   /* Already active */
 972     if ((wndPtr->rectWindow.right - wndPtr->rectWindow.left == cx) &&
 973         (wndPtr->rectWindow.bottom - wndPtr->rectWindow.top == cy))
 974         flags |= SWP_NOSIZE;    /* Already the right size */
 975     if ((wndPtr->rectWindow.left == x) && (wndPtr->rectWindow.top == y))
 976         flags |= SWP_NOMOVE;    /* Already the right position */
 977
 978       /* Check hwndInsertAfter */
 979
 980     if (!(flags & (SWP_NOZORDER | SWP_NOACTIVATE)))
 981     {
 982           /* Ignore TOPMOST flags when activating a window */
 983           /* _and_ moving it in Z order. */
 984         if ((hwndInsertAfter == HWND_TOPMOST) ||
 985             (hwndInsertAfter == HWND_NOTOPMOST))
 986             hwndInsertAfter = HWND_TOP;
 987     }
 988       /* TOPMOST not supported yet */
 989     if ((hwndInsertAfter == HWND_TOPMOST) ||
 990         (hwndInsertAfter == HWND_NOTOPMOST)) hwndInsertAfter = HWND_TOP;
 991       /* hwndInsertAfter must be a sibling of the window */
 992     if ((hwndInsertAfter != HWND_TOP) && (hwndInsertAfter != HWND_BOTTOM) &&
 993         (wndPtr->hwndParent != WIN_FindWndPtr(hwndInsertAfter)->hwndParent))
 994         return FALSE;
 995
 996       /* Fill the WINDOWPOS structure */
 997
 998     winpos.hwnd = hwnd;
 999     winpos.hwndInsertAfter = hwndInsertAfter;
1000     winpos.x = x;
1001     winpos.y = y;
1002     winpos.cx = cx;
1003     winpos.cy = cy;
1004     winpos.flags = flags;
1005
1006       /* Send WM_WINDOWPOSCHANGING message */
1007
1008     if (!(flags & SWP_NOSENDCHANGING))
1009         SendMessage( hwnd, WM_WINDOWPOSCHANGING, 0, MAKE_SEGPTR(&winpos) );
1010
1011       /* Calculate new position and size */
1012
1013     newWindowRect = wndPtr->rectWindow;
1014     newClientRect = wndPtr->rectClient;
1015
1016     if (!(winpos.flags & SWP_NOSIZE))
1017     {
1018         newWindowRect.right  = newWindowRect.left + winpos.cx;
1019         newWindowRect.bottom = newWindowRect.top + winpos.cy;
1020     }
1021     if (!(winpos.flags & SWP_NOMOVE))
1022     {
1023         newWindowRect.left    = winpos.x;
1024         newWindowRect.top     = winpos.y;
1025         newWindowRect.right  += winpos.x - wndPtr->rectWindow.left;
1026         newWindowRect.bottom += winpos.y - wndPtr->rectWindow.top;
1027     }
1028
1029       /* Reposition window in Z order */
1030
1031     if (!(winpos.flags & SWP_NOZORDER))
1032     {
1033         if (wndPtr->window)
1034         {
1035             WIN_UnlinkWindow( winpos.hwnd );
1036             WIN_LinkWindow( winpos.hwnd, hwndInsertAfter );
1037         }
1038         else WINPOS_MoveWindowZOrder( winpos.hwnd, hwndInsertAfter );
1039     }
1040
1041       /* Send WM_NCCALCSIZE message to get new client area */
1042
1043     result = WINPOS_SendNCCalcSize( winpos.hwnd, TRUE, &newWindowRect,
1044                                     &wndPtr->rectWindow, &wndPtr->rectClient,
1045                                     &winpos, &newClientRect );
1046     /* ....  Should handle result here */
1047
1048       /* Perform the moving and resizing */
1049
1050     if (wndPtr->window)
1051     {
1052         WINPOS_SetXWindowPos( &winpos );
1053         wndPtr->rectWindow = newWindowRect;
1054         wndPtr->rectClient = newClientRect;
1055     }
1056     else
1057     {
1058         RECT oldWindowRect = wndPtr->rectWindow;
1059
1060         wndPtr->rectWindow = newWindowRect;
1061         wndPtr->rectClient = newClientRect;
1062
1063         if (!(flags & SWP_NOREDRAW) &&
1064             (!(flags & SWP_NOSIZE) || !(flags & SWP_NOMOVE) ||
1065              (!(flags & SWP_NOZORDER) && (hwndInsertAfter != HWND_TOP))))
1066         {
1067             HRGN hrgn1 = CreateRectRgnIndirect( &oldWindowRect );
1068             HRGN hrgn2 = CreateRectRgnIndirect( &wndPtr->rectWindow );
1069             HRGN hrgn3 = CreateRectRgn( 0, 0, 0, 0 );
1070             CombineRgn( hrgn3, hrgn1, hrgn2, RGN_DIFF );
1071             RedrawWindow( wndPtr->hwndParent, NULL, hrgn3,
1072                           RDW_INVALIDATE | RDW_ALLCHILDREN | RDW_ERASE );
1073
1074             /* DCE_GetVisRgn should be called for old coordinates
1075              * and for new, then OffsetRgn and CombineRgn -
1076              * voila, a nice update region to use here - AK.
1077              */
1078             if ((oldWindowRect.left != wndPtr->rectWindow.left) ||
1079                 (oldWindowRect.top != wndPtr->rectWindow.top))
1080             {
1081                 RedrawWindow( winpos.hwnd, NULL, 0, RDW_INVALIDATE |
1082                               RDW_FRAME | RDW_ALLCHILDREN | RDW_ERASE );
1083             }
1084             else
1085                 if( CombineRgn( hrgn3, hrgn2, hrgn1, RGN_DIFF) != NULLREGION )
1086                     RedrawWindow( winpos.hwnd, NULL, hrgn3, RDW_INVALIDATE |
1087                                   RDW_FRAME | RDW_ALLCHILDREN | RDW_ERASE );
1088
1089             DeleteObject( hrgn1 );
1090             DeleteObject( hrgn2 );
1091             DeleteObject( hrgn3 );
1092         }
1093     }
1094
1095     if (flags & SWP_SHOWWINDOW)
1096     {
1097         wndPtr->dwStyle |= WS_VISIBLE;
1098         if (wndPtr->window)
1099         {
1100             XMapWindow( display, wndPtr->window );
1101         }
1102         else
1103         {
1104             if (!(flags & SWP_NOREDRAW))
1105                 RedrawWindow( winpos.hwnd, NULL, 0,
1106                               RDW_INVALIDATE | RDW_ALLCHILDREN |
1107                               RDW_FRAME | RDW_ERASE );
1108         }
1109     }
1110     else if (flags & SWP_HIDEWINDOW)
1111     {
1112         wndPtr->dwStyle &= ~WS_VISIBLE;
1113         if (wndPtr->window)
1114         {
1115             XUnmapWindow( display, wndPtr->window );
1116         }
1117         else
1118         {
1119             if (!(flags & SWP_NOREDRAW))
1120                 RedrawWindow( wndPtr->hwndParent, &wndPtr->rectWindow, 0,
1121                               RDW_INVALIDATE | RDW_FRAME |
1122                               RDW_ALLCHILDREN | RDW_ERASE );
1123         }
1124
1125         if ((winpos.hwnd == GetFocus()) || IsChild(winpos.hwnd, GetFocus()))
1126             SetFocus( GetParent(winpos.hwnd) );  /* Revert focus to parent */
1127
1128         if (winpos.hwnd == hwndActive)
1129         {
1130               /* Activate previously active window if possible */
1131             HWND newActive = hwndPrevActive;
1132             if (!IsWindow(newActive) || (newActive == winpos.hwnd))
1133             {
1134                 newActive = GetTopWindow( GetDesktopWindow() );
1135                 if (newActive == winpos.hwnd) newActive = wndPtr->hwndNext;
1136             }
1137             WINPOS_ChangeActiveWindow( newActive, FALSE );
1138         }
1139     }
1140
1141       /* Activate the window */
1142
1143     if (!(flags & SWP_NOACTIVATE))
1144             WINPOS_ChangeActiveWindow( winpos.hwnd, FALSE );
1145
1146       /* Repaint the window */
1147
1148     if (wndPtr->window) MSG_Synchronize();  /* Wait for all expose events */
1149
1150     EVENT_DummyMotionNotify(); /* Simulate a mouse event to set the cursor */
1151
1152     if ((flags & SWP_FRAMECHANGED) && !(flags & SWP_NOREDRAW))
1153         RedrawWindow( winpos.hwnd, NULL, 0,
1154                       RDW_INVALIDATE | RDW_FRAME | RDW_ERASE );
1155     if (!(flags & SWP_DEFERERASE))
1156         RedrawWindow( wndPtr->hwndParent, NULL, 0,
1157                       RDW_ALLCHILDREN | RDW_ERASENOW );
1158
1159       /* And last, send the WM_WINDOWPOSCHANGED message */
1160
1161     winpos.flags |= SWP_NOMOVE; /* prevent looping.. window is already moved ??? (FIXME)*/
1162
1163     if (!(winpos.flags & SWP_NOSENDCHANGING))
1164         SendMessage( winpos.hwnd, WM_WINDOWPOSCHANGED,
1165                      0, MAKE_SEGPTR(&winpos) );
1166
1167     return TRUE;
1168 }
1169
1170
1171 /***********************************************************************
1172  *           BeginDeferWindowPos   (USER.259)
1173  */
1174 HDWP BeginDeferWindowPos( INT count )
1175 {
1176     HDWP handle;
1177     DWP *pDWP;
1178
1179     if (count <= 0) return 0;
1180     handle = USER_HEAP_ALLOC( sizeof(DWP) + (count-1)*sizeof(WINDOWPOS) );
1181     if (!handle) return 0;
1182     pDWP = (DWP *) USER_HEAP_LIN_ADDR( handle );
1183     pDWP->actualCount    = 0;
1184     pDWP->suggestedCount = count;
1185     pDWP->valid          = TRUE;
1186     pDWP->wMagic         = DWP_MAGIC;
1187     pDWP->hwndParent     = 0;
1188     return handle;
1189 }
1190
1191
1192 /***********************************************************************
1193  *           DeferWindowPos   (USER.260)
1194  */
1195 HDWP DeferWindowPos( HDWP hdwp, HWND hwnd, HWND hwndAfter, INT x, INT y,
1196                      INT cx, INT cy, WORD flags )
1197 {
1198     DWP *pDWP;
1199     int i;
1200     HDWP newhdwp = hdwp;
1201     HWND parent;
1202
1203     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1204     if (!pDWP) return 0;
1205
1206       /* All the windows of a DeferWindowPos() must have the same parent */
1207
1208     parent = WIN_FindWndPtr( hwnd )->hwndParent;
1209     if (pDWP->actualCount == 0) pDWP->hwndParent = parent;
1210     else if (parent != pDWP->hwndParent)
1211     {
1212         USER_HEAP_FREE( hdwp );
1213         return 0;
1214     }
1215
1216     for (i = 0; i < pDWP->actualCount; i++)
1217     {
1218         if (pDWP->winPos[i].hwnd == hwnd)
1219         {
1220               /* Merge with the other changes */
1221             if (!(flags & SWP_NOZORDER))
1222             {
1223                 pDWP->winPos[i].hwndInsertAfter = hwndAfter;
1224             }
1225             if (!(flags & SWP_NOMOVE))
1226             {
1227                 pDWP->winPos[i].x = x;
1228                 pDWP->winPos[i].y = y;
1229             }
1230             if (!(flags & SWP_NOSIZE))
1231             {
1232                 pDWP->winPos[i].cx = cx;
1233                 pDWP->winPos[i].cy = cy;
1234             }
1235             pDWP->winPos[i].flags &= flags & (SWP_NOSIZE | SWP_NOMOVE |
1236                                               SWP_NOZORDER | SWP_NOREDRAW |
1237                                               SWP_NOACTIVATE | SWP_NOCOPYBITS |
1238                                               SWP_NOOWNERZORDER);
1239             pDWP->winPos[i].flags |= flags & (SWP_SHOWWINDOW | SWP_HIDEWINDOW |
1240                                               SWP_FRAMECHANGED);
1241             return hdwp;
1242         }
1243     }
1244     if (pDWP->actualCount >= pDWP->suggestedCount)
1245     {
1246         newhdwp = USER_HEAP_REALLOC( hdwp,
1247                       sizeof(DWP) + pDWP->suggestedCount*sizeof(WINDOWPOS) );
1248         if (!newhdwp) return 0;
1249         pDWP = (DWP *) USER_HEAP_LIN_ADDR( newhdwp );
1250         pDWP->suggestedCount++;
1251     }
1252     pDWP->winPos[pDWP->actualCount].hwnd = hwnd;
1253     pDWP->winPos[pDWP->actualCount].hwndInsertAfter = hwndAfter;
1254     pDWP->winPos[pDWP->actualCount].x = x;
1255     pDWP->winPos[pDWP->actualCount].y = y;
1256     pDWP->winPos[pDWP->actualCount].cx = cx;
1257     pDWP->winPos[pDWP->actualCount].cy = cy;
1258     pDWP->winPos[pDWP->actualCount].flags = flags;
1259     pDWP->actualCount++;
1260     return newhdwp;
1261 }
1262
1263
1264 /***********************************************************************
1265  *           EndDeferWindowPos   (USER.261)
1266  */
1267 BOOL EndDeferWindowPos( HDWP hdwp )
1268 {
1269     DWP *pDWP;
1270     WINDOWPOS *winpos;
1271     BOOL res = TRUE;
1272     int i;
1273
1274     pDWP = (DWP *) USER_HEAP_LIN_ADDR( hdwp );
1275     if (!pDWP) return FALSE;
1276     for (i = 0, winpos = pDWP->winPos; i < pDWP->actualCount; i++, winpos++)
1277     {
1278         if (!(res = SetWindowPos( winpos->hwnd, winpos->hwndInsertAfter,
1279                                   winpos->x, winpos->y, winpos->cx, winpos->cy,
1280                                   winpos->flags ))) break;
1281     }
1282     USER_HEAP_FREE( hdwp );
1283     return res;
1284 }
1285
1286
1287 /***********************************************************************
1288  *           TileChildWindows   (USER.199)
1289  */
1290 void TileChildWindows( HWND parent, WORD action )
1291 {
1292     printf("STUB TileChildWindows("NPFMT", %d)\n", parent, action);
1293 }
1294
1295 /***********************************************************************
1296  *           CascageChildWindows   (USER.198)
1297  */
1298 void CascadeChildWindows( HWND parent, WORD action )
1299 {
1300     printf("STUB CascadeChildWindows("NPFMT", %d)\n", parent, action);
1301 }