git.oblomov.eu Git - wine/blob - windows/painting.c

   1 /*
   2  * Window painting functions
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1999 Alex Korobka
   6  */
   7
   8 #include "windef.h"
   9 #include "wingdi.h"
  10 #include "wine/winuser16.h"
  11 #include "region.h"
  12 #include "win.h"
  13 #include "queue.h"
  14 #include "dce.h"
  15 #include "heap.h"
  16 #include "debugtools.h"
  17 #include "cache.h"
  18
  19 DEFAULT_DEBUG_CHANNEL(win);
  20 DECLARE_DEBUG_CHANNEL(nonclient);
  21
  22 /* client rect in window coordinates */
  23
  24 #define GETCLIENTRECTW( wnd, r )        (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
  25                                         (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
  26                                         (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
  27                                         (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
  28
  29   /* Last COLOR id */
  30 #define COLOR_MAX   COLOR_GRADIENTINACTIVECAPTION
  31
  32   /* Last CTLCOLOR id */
  33 #define CTLCOLOR_MAX   CTLCOLOR_STATIC
  34
  35
  36 /***********************************************************************
  37  *           WIN_HaveToDelayNCPAINT
  38  *
  39  * Currently, in the Wine painting mechanism, the WM_NCPAINT message
  40  * is generated as soon as a region intersecting the non-client area
  41  * of a window is invalidated.
  42  *
  43  * This technique will work fine for all windows whose parents
  44  * have the WS_CLIPCHILDREN style. When the parents have that style,
  45  * they are not going to override the contents of their children.
  46  * However, when the parent doesn't have that style, Windows relies
  47  * on a "painter's algorithm" to display the contents of the windows.
  48  * That is, windows are painted from back to front. This includes the
  49  * non-client area.
  50  *
  51  * This method looks at the current state of a window to determine
  52  * if the sending of the WM_NCPAINT message should be delayed until
  53  * the BeginPaint call.
  54  *
  55  * PARAMS:
  56  *   wndPtr   - A Locked window pointer to the window we're
  57  *              examining.
  58  *   uncFlags - This is the flag passed to the WIN_UpdateNCRgn
  59  *              function. This is a shortcut for the cases when
  60  *              we already know when to avoid scanning all the
  61  *              parents of a window. If you already know that this
  62  *              window's NCPAINT should be delayed, set the
  63  *              UNC_DELAY_NCPAINT flag for this parameter.
  64  *
  65  *              This shortcut behavior is implemented in the
  66  *              RDW_Paint() method.
  67  *
  68  */
  69 static BOOL WIN_HaveToDelayNCPAINT(
  70   WND* wndPtr,
  71   UINT uncFlags)
  72 {
  73   WND* parentWnd = NULL;
  74
  75   /*
  76    * Test the shortcut first. (duh)
  77    */
  78   if (uncFlags & UNC_DELAY_NCPAINT)
  79     return TRUE;
  80
  81   /*
  82    * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
  83    * method only. This is another shortcut to avoid going
  84    * up the parent's chain of the window to finally
  85    * figure-out that none of them has an invalid region.
  86    */
  87   if (uncFlags & UNC_IN_BEGINPAINT)
  88     return FALSE;
  89
  90   /*
  91    * Scan all the parents of this window to find a window
  92    * that doesn't have the WS_CLIPCHILDREN style and that
  93    * has an invalid region.
  94    */
  95   parentWnd = WIN_LockWndPtr(wndPtr->parent);
  96
  97   while (parentWnd!=NULL)
  98   {
  99     if ( ((parentWnd->dwStyle & WS_CLIPCHILDREN) == 0) &&
 100          (parentWnd->hrgnUpdate != 0) )
 101     {
 102       WIN_ReleaseWndPtr(parentWnd);
 103       return TRUE;
 104     }
 105
 106     WIN_UpdateWndPtr(&parentWnd, parentWnd->parent);
 107   }
 108
 109   WIN_ReleaseWndPtr(parentWnd);
 110
 111   return FALSE;
 112 }
 113
 114 /***********************************************************************
 115  *           WIN_UpdateNCRgn
 116  *
 117  *  Things to do:
 118  *      Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
 119  *      Crop hrgnUpdate to a client rect, especially if it 1.
 120  *      If UNC_REGION is set return update region for the client rect.
 121  *
 122  *  NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
 123  *        The trick is that when the returned region handle may be different from hRgn.
 124  *        In this case the old hRgn must be considered gone. BUT, if the returned value
 125  *        is 1 then the hRgn is preserved and RDW_Paint() will have to get
 126  *        a DC without extra clipping region.
 127  */
 128 HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
 129 {
 130     RECT  r;
 131     HRGN  hClip = 0;
 132     HRGN  hrgnRet = 0;
 133
 134     TRACE_(nonclient)("hwnd %04x [%04x] hrgn %04x, unc %04x, ncf %i\n",
 135                       wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
 136
 137     /* desktop window doesn't have a nonclient area */
 138     if(wnd == WIN_GetDesktop())
 139     {
 140         wnd->flags &= ~WIN_NEEDS_NCPAINT;
 141         if( wnd->hrgnUpdate > 1 )
 142             hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
 143         else
 144         {
 145             hrgnRet = wnd->hrgnUpdate;
 146         }
 147         WIN_ReleaseDesktop();
 148         return hrgnRet;
 149     }
 150     WIN_ReleaseDesktop();
 151
 152     if ((wnd->hwndSelf == GetForegroundWindow()) &&
 153         !(wnd->flags & WIN_NCACTIVATED) )
 154     {
 155         wnd->flags |= WIN_NCACTIVATED;
 156         uncFlags |= UNC_ENTIRE;
 157     }
 158
 159     /*
 160      * If the window's non-client area needs to be painted,
 161      */
 162     if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
 163          !WIN_HaveToDelayNCPAINT(wnd, uncFlags) )
 164     {
 165             RECT r2, r3;
 166
 167             wnd->flags &= ~WIN_NEEDS_NCPAINT;
 168             GETCLIENTRECTW( wnd, r );
 169
 170             TRACE_(nonclient)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
 171                                 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
 172             if( wnd->hrgnUpdate > 1 )
 173             {
 174                 /* Check if update rgn overlaps with nonclient area */
 175
 176                 GetRgnBox( wnd->hrgnUpdate, &r2 );
 177                 UnionRect( &r3, &r2, &r );
 178                 if( r3.left != r.left || r3.top != r.top ||
 179                     r3.right != r.right || r3.bottom != r.bottom ) /* it does */
 180                 {
 181                     /* crop hrgnUpdate, save old one in hClip - the only
 182                      * case that places a valid region handle in hClip */
 183
 184                     hClip = wnd->hrgnUpdate;
 185                     wnd->hrgnUpdate = REGION_CropRgn( hRgn, hClip, &r, NULL );
 186                     if( uncFlags & UNC_REGION ) hrgnRet = hClip;
 187                 }
 188
 189                 if( uncFlags & UNC_CHECK )
 190                 {
 191                     GetRgnBox( wnd->hrgnUpdate, &r3 );
 192                     if( IsRectEmpty( &r3 ) )
 193                     {
 194                         /* delete the update region since all invalid
 195                          * parts were in the nonclient area */
 196
 197                         DeleteObject( wnd->hrgnUpdate );
 198                         wnd->hrgnUpdate = 0;
 199                         if(!(wnd->flags & WIN_INTERNAL_PAINT))
 200                             QUEUE_DecPaintCount( wnd->hmemTaskQ );
 201
 202                         wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
 203                     }
 204                 }
 205
 206                 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
 207             }
 208             else
 209             if( wnd->hrgnUpdate == 1 )/* entire window */
 210             {
 211                 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 212                 if( uncFlags & UNC_REGION ) hrgnRet = 1;
 213                 uncFlags |= UNC_ENTIRE;
 214             }
 215     }
 216     else /* no WM_NCPAINT unless forced */
 217     {
 218         if( wnd->hrgnUpdate >  1 )
 219         {
 220 copyrgn:
 221             if( uncFlags & UNC_REGION )
 222                 hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
 223         }
 224         else
 225         if( wnd->hrgnUpdate == 1 && (uncFlags & UNC_UPDATE) )
 226         {
 227             GETCLIENTRECTW( wnd, r );
 228             wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 229             if( uncFlags & UNC_REGION ) hrgnRet = 1;
 230         }
 231     }
 232
 233     if(!hClip && (uncFlags & UNC_ENTIRE) )
 234     {
 235         /* still don't do anything if there is no nonclient area */
 236         hClip = (memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
 237     }
 238
 239     if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
 240     {
 241         if ( hClip == hrgnRet && hrgnRet > 1 ) {
 242             hClip = CreateRectRgn( 0, 0, 0, 0 );
 243             CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
 244         }
 245
 246         SendMessageA( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
 247         if( (hClip > 1) && (hClip != hRgn) && (hClip != hrgnRet) )
 248             DeleteObject( hClip );
 249         /*
 250          * Since all Window locks are suspended while processing the WM_NCPAINT
 251          * we want to make sure the window still exists before continuing.
 252          */
 253         if (!IsWindow(wnd->hwndSelf))
 254         {
 255           DeleteObject(hrgnRet);
 256           hrgnRet=0;
 257         }
 258     }
 259
 260     TRACE_(nonclient)("returning %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet, hClip, wnd->hrgnUpdate );
 261
 262     return hrgnRet;
 263 }
 264
 265
 266 /***********************************************************************
 267  *           BeginPaint16    (USER.39)
 268  */
 269 HDC16 WINAPI BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
 270 {
 271     PAINTSTRUCT ps;
 272
 273     BeginPaint( hwnd, &ps );
 274     lps->hdc            = ps.hdc;
 275     lps->fErase         = ps.fErase;
 276     lps->rcPaint.top    = ps.rcPaint.top;
 277     lps->rcPaint.left   = ps.rcPaint.left;
 278     lps->rcPaint.right  = ps.rcPaint.right;
 279     lps->rcPaint.bottom = ps.rcPaint.bottom;
 280     lps->fRestore       = ps.fRestore;
 281     lps->fIncUpdate     = ps.fIncUpdate;
 282     return lps->hdc;
 283 }
 284
 285
 286 /***********************************************************************
 287  *           BeginPaint    (USER32.10)
 288  */
 289 HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
 290 {
 291     BOOL bIcon;
 292     HRGN hrgnUpdate;
 293     RECT clipRect, clientRect;
 294     WND *wndPtr = WIN_FindWndPtr( hwnd );
 295     if (!wndPtr) return 0;
 296
 297     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
 298
 299     wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 300
 301     /* send WM_NCPAINT and make sure hrgnUpdate is a valid rgn handle */
 302     WIN_UpdateNCRgn( wndPtr, 0, UNC_UPDATE | UNC_IN_BEGINPAINT);
 303
 304     /*
 305      * Make sure the window is still a window. All window locks are suspended
 306      * when the WM_NCPAINT is sent.
 307      */
 308     if (!IsWindow(wndPtr->hwndSelf))
 309     {
 310         WIN_ReleaseWndPtr(wndPtr);
 311         return 0;
 312     }
 313
 314     if( ((hrgnUpdate = wndPtr->hrgnUpdate) != 0) || (wndPtr->flags & WIN_INTERNAL_PAINT))
 315         QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 316
 317     wndPtr->hrgnUpdate = 0;
 318     wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 319
 320     HideCaret( hwnd );
 321
 322     TRACE("hrgnUpdate = %04x, \n", hrgnUpdate);
 323
 324     if (GetClassWord16(wndPtr->hwndSelf, GCW_STYLE) & CS_PARENTDC)
 325     {
 326         /* Don't clip the output to the update region for CS_PARENTDC window */
 327         if( hrgnUpdate )
 328             DeleteObject(hrgnUpdate);
 329         lps->hdc = GetDCEx( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
 330                               (bIcon ? DCX_WINDOW : 0) );
 331     }
 332     else
 333     {
 334         if( hrgnUpdate ) /* convert to client coordinates */
 335             OffsetRgn( hrgnUpdate, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 336                                    wndPtr->rectWindow.top - wndPtr->rectClient.top );
 337         lps->hdc = GetDCEx(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
 338                              DCX_WINDOWPAINT | DCX_USESTYLE | (bIcon ? DCX_WINDOW : 0) );
 339         /* ReleaseDC() in EndPaint() will delete the region */
 340     }
 341
 342     TRACE("hdc = %04x\n", lps->hdc);
 343
 344     if (!lps->hdc)
 345     {
 346         WARN("GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
 347         WIN_ReleaseWndPtr(wndPtr);
 348         return 0;
 349     }
 350
 351     /* It is possible that the clip box is bigger than the window itself,
 352        if CS_PARENTDC flag is set. Windows never return a paint rect bigger
 353        than the window itself, so we need to intersect the cliprect with
 354        the window  */
 355
 356     GetClipBox( lps->hdc, &clipRect );
 357     GetClientRect( hwnd, &clientRect );
 358
 359     /* The rect obtained by GetClipBox is in logical, so make the client in logical to*/
 360     DPtoLP(lps->hdc, (LPPOINT)&clientRect, 2);
 361
 362     IntersectRect(&lps->rcPaint, &clientRect, &clipRect);
 363
 364     TRACE("box = (%i,%i - %i,%i)\n", lps->rcPaint.left, lps->rcPaint.top,
 365                     lps->rcPaint.right, lps->rcPaint.bottom );
 366
 367     if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 368     {
 369         wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 370         lps->fErase = !SendMessageA(hwnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND,
 371                                     (WPARAM16)lps->hdc, 0 );
 372     }
 373     else lps->fErase = TRUE;
 374
 375     WIN_ReleaseWndPtr(wndPtr);
 376     return lps->hdc;
 377 }
 378
 379
 380 /***********************************************************************
 381  *           EndPaint16    (USER.40)
 382  */
 383 BOOL16 WINAPI EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
 384 {
 385     ReleaseDC16( hwnd, lps->hdc );
 386     ShowCaret( hwnd );
 387     return TRUE;
 388 }
 389
 390
 391 /***********************************************************************
 392  *           EndPaint    (USER32.176)
 393  */
 394 BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
 395 {
 396     ReleaseDC( hwnd, lps->hdc );
 397     ShowCaret( hwnd );
 398     return TRUE;
 399 }
 400
 401
 402 /***********************************************************************
 403  *           FillWindow    (USER.324)
 404  */
 405 void WINAPI FillWindow16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
 406 {
 407     RECT rect;
 408     RECT16 rc16;
 409     GetClientRect( hwnd, &rect );
 410     DPtoLP( hdc, (LPPOINT)&rect, 2 );
 411     CONV_RECT32TO16( &rect, &rc16 );
 412     PaintRect16( hwndParent, hwnd, hdc, hbrush, &rc16 );
 413 }
 414
 415
 416 /***********************************************************************
 417  *           PAINT_GetControlBrush
 418  */
 419 static HBRUSH16 PAINT_GetControlBrush( HWND hParent, HWND hWnd, HDC16 hDC, UINT16 ctlType )
 420 {
 421     HBRUSH16 bkgBrush = (HBRUSH16)SendMessageA( hParent, WM_CTLCOLORMSGBOX + ctlType,
 422                                                              (WPARAM)hDC, (LPARAM)hWnd );
 423     if( !IsGDIObject16(bkgBrush) )
 424         bkgBrush = DEFWND_ControlColor( hDC, ctlType );
 425     return bkgBrush;
 426 }
 427
 428
 429 /***********************************************************************
 430  *           PaintRect    (USER.325)
 431  */
 432 void WINAPI PaintRect16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
 433                        HBRUSH16 hbrush, const RECT16 *rect)
 434 {
 435     if( hbrush <= CTLCOLOR_MAX )
 436     {
 437         if( hwndParent )
 438             hbrush = PAINT_GetControlBrush( hwndParent, hwnd, hdc, (UINT16)hbrush );
 439         else
 440             return;
 441     }
 442     if( hbrush )
 443         FillRect16( hdc, rect, hbrush );
 444 }
 445
 446
 447 /***********************************************************************
 448  *           GetControlBrush    (USER.326)
 449  */
 450 HBRUSH16 WINAPI GetControlBrush16( HWND16 hwnd, HDC16 hdc, UINT16 ctlType )
 451 {
 452     WND* wndPtr = WIN_FindWndPtr( hwnd );
 453     HBRUSH16 retvalue;
 454
 455     if((ctlType <= CTLCOLOR_MAX) && wndPtr )
 456     {
 457         WND* parent;
 458         if( wndPtr->dwStyle & WS_POPUP ) parent = WIN_LockWndPtr(wndPtr->owner);
 459         else parent = WIN_LockWndPtr(wndPtr->parent);
 460         if( !parent ) parent = wndPtr;
 461         retvalue = (HBRUSH16)PAINT_GetControlBrush( parent->hwndSelf, hwnd, hdc, ctlType );
 462         WIN_ReleaseWndPtr(parent);
 463         goto END;
 464     }
 465     retvalue = (HBRUSH16)0;
 466 END:
 467     WIN_ReleaseWndPtr(wndPtr);
 468     return retvalue;
 469 }
 470
 471
 472 /***********************************************************************
 473  *              RDW_ValidateParent [RDW_UpdateRgns() helper]
 474  *
 475  *  Validate the portions of parents that are covered by a validated child
 476  *  wndPtr = child
 477  */
 478 void  RDW_ValidateParent(WND *wndChild)
 479 {
 480     WND *wndParent = WIN_LockWndPtr(wndChild->parent);
 481     WND *wndDesktop = WIN_GetDesktop();
 482     HRGN hrg;
 483
 484     if (wndChild->hrgnUpdate == 1 ) {
 485         RECT r;
 486         r.left = 0;
 487         r.top = 0;
 488         r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
 489         r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
 490         hrg = CreateRectRgnIndirect( &r );
 491     } else
 492         hrg = wndChild->hrgnUpdate;
 493
 494     while ((wndParent) && (wndParent != wndDesktop) ) {
 495         if (!(wndParent->dwStyle & WS_CLIPCHILDREN))
 496         {
 497             if (wndParent->hrgnUpdate != 0)
 498             {
 499                 POINT ptOffset;
 500                 RECT rect, rectParent;
 501                 if( wndParent->hrgnUpdate == 1 )
 502                 {
 503                    RECT r;
 504
 505                    r.left = 0;
 506                    r.top = 0;
 507                    r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
 508                    r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
 509
 510                    wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
 511                 }
 512                 /* we must offset the child region by the offset of the child rect in the parent */
 513                 GetWindowRect(wndParent->hwndSelf, &rectParent);
 514                 GetWindowRect(wndChild->hwndSelf, &rect);
 515                 ptOffset.x = rect.left - rectParent.left;
 516                 ptOffset.y = rect.top - rectParent.top;
 517                 OffsetRgn( hrg, ptOffset.x, ptOffset.y );
 518                 CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF );
 519                 OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
 520             }
 521         }
 522         WIN_UpdateWndPtr(&wndParent, wndParent->parent);
 523     }
 524     if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
 525     WIN_ReleaseWndPtr(wndParent);
 526     WIN_ReleaseDesktop();
 527 }
 528
 529 /***********************************************************************
 530  *              RDW_UpdateRgns [RedrawWindow() helper]
 531  *
 532  *  Walks the window tree and adds/removes parts of the hRgn to/from update
 533  *  regions of windows that overlap it. Also, manages internal paint flags.
 534  *
 535  *  NOTE: Walks the window tree so the caller must lock it.
 536  *        MUST preserve hRgn (can modify but then has to restore).
 537  */
 538 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
 539 {
 540     /*
 541      * Called only when one of the following is set:
 542      * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
 543      */
 544
 545     BOOL bHadOne =  wndPtr->hrgnUpdate && hRgn;
 546     BOOL bChildren =  ( wndPtr->child && !(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE)
 547                         && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
 548     RECT r;
 549
 550     r.left = 0;
 551     r.top = 0;
 552     r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
 553     r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
 554
 555     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
 556
 557     if( flags & RDW_INVALIDATE )
 558     {
 559         if( hRgn > 1 )
 560         {
 561             switch( wndPtr->hrgnUpdate )
 562             {
 563                 default:
 564                         CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
 565                         /* fall through */
 566                 case 0:
 567                         wndPtr->hrgnUpdate = REGION_CropRgn( wndPtr->hrgnUpdate,
 568                                                              wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
 569                                                              &r, NULL );
 570                         if( !bHadOne )
 571                         {
 572                             GetRgnBox( wndPtr->hrgnUpdate, &r );
 573                             if( IsRectEmpty( &r ) )
 574                             {
 575                                 DeleteObject( wndPtr->hrgnUpdate );
 576                                 wndPtr->hrgnUpdate = 0;
 577                                 goto end;
 578                             }
 579                         }
 580                         break;
 581                 case 1: /* already an entire window */
 582                         break;
 583             }
 584         }
 585         else if( hRgn == 1 )
 586         {
 587             if( wndPtr->hrgnUpdate > 1 )
 588                 DeleteObject( wndPtr->hrgnUpdate );
 589             wndPtr->hrgnUpdate = 1;
 590         }
 591         else
 592             hRgn = wndPtr->hrgnUpdate;  /* this is a trick that depends on code in PAINT_RedrawWindow() */
 593
 594         if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 595             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 596
 597         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 598         if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 599         flags    |= RDW_FRAME;
 600     }
 601     else if( flags & RDW_VALIDATE )
 602     {
 603         if( wndPtr->hrgnUpdate )
 604         {
 605             if( hRgn > 1 )
 606             {
 607                 if( wndPtr->hrgnUpdate == 1 )
 608                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
 609
 610                 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
 611                     == NULLREGION )
 612                     goto EMPTY;
 613             }
 614             else /* validate everything */
 615             {
 616                 if( wndPtr->hrgnUpdate > 1 )
 617                 {
 618 EMPTY:
 619                     DeleteObject( wndPtr->hrgnUpdate );
 620                 }
 621                 wndPtr->hrgnUpdate = 0;
 622             }
 623
 624             if( !wndPtr->hrgnUpdate )
 625             {
 626                 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 627                 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 628                     QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 629             }
 630         }
 631
 632         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 633         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 634
 635     }
 636
 637     if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
 638         RDW_ValidateParent(wndPtr); /* validate parent covered by region */
 639
 640     /* in/validate child windows that intersect with the region if it
 641      * is a valid handle. */
 642
 643     if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
 644     {
 645         if( hRgn > 1 && bChildren )
 646         {
 647             WND* wnd = wndPtr->child;
 648             POINT ptTotal, prevOrigin = {0,0};
 649             POINT ptClient;
 650
 651             ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 652             ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 653
 654             for( ptTotal.x = ptTotal.y = 0; wnd; wnd = wnd->next )
 655             {
 656                 if( wnd->dwStyle & WS_VISIBLE )
 657                 {
 658                     POINT ptOffset;
 659
 660                     r.left = wnd->rectWindow.left + ptClient.x;
 661                     r.right = wnd->rectWindow.right + ptClient.x;
 662                     r.top = wnd->rectWindow.top + ptClient.y;
 663                     r.bottom = wnd->rectWindow.bottom + ptClient.y;
 664
 665                     ptOffset.x = r.left - prevOrigin.x;
 666                     ptOffset.y = r.top - prevOrigin.y;
 667                     OffsetRect( &r, -ptTotal.x, -ptTotal.y );
 668
 669                     if( RectInRegion( hRgn, &r ) )
 670                     {
 671                         OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
 672                         RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 673                         prevOrigin.x = r.left + ptTotal.x;
 674                         prevOrigin.y = r.top + ptTotal.y;
 675                         ptTotal.x += ptOffset.x;
 676                         ptTotal.y += ptOffset.y;
 677                     }
 678                 }
 679             }
 680             OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
 681             bChildren = 0;
 682         }
 683     }
 684
 685     /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
 686
 687     if( bChildren )
 688     {
 689         WND* wnd;
 690         for( wnd = wndPtr->child; wnd; wnd = wnd->next )
 691              if( wnd->dwStyle & WS_VISIBLE )
 692                  RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 693     }
 694
 695 end:
 696
 697     /* Set/clear internal paint flag */
 698
 699     if (flags & RDW_INTERNALPAINT)
 700     {
 701         if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 702             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 703         wndPtr->flags |= WIN_INTERNAL_PAINT;
 704     }
 705     else if (flags & RDW_NOINTERNALPAINT)
 706     {
 707         if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
 708             QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 709         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 710     }
 711 }
 712
 713 /***********************************************************************
 714  *           RDW_Paint [RedrawWindow() helper]
 715  *
 716  * Walks the window tree and paints/erases windows that have
 717  * nonzero update regions according to redraw flags. hrgn is a scratch
 718  * region passed down during recursion. Must not be 1.
 719  *
 720  */
 721 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
 722 {
 723 /* NOTE: wndPtr is locked by caller.
 724  *
 725  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 726  * SendMessage() calls. This is a comment inside DefWindowProc() source
 727  * from 16-bit SDK:
 728  *
 729  *   This message avoids lots of inter-app message traffic
 730  *   by switching to the other task and continuing the
 731  *   recursion there.
 732  *
 733  * wParam         = flags
 734  * LOWORD(lParam) = hrgnClip
 735  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 736  *
 737  */
 738     HDC  hDC;
 739     HWND hWnd = wndPtr->hwndSelf;
 740     BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
 741
 742       /* Erase/update the window itself ... */
 743
 744     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
 745
 746     /*
 747      * Check if this window should delay it's processing of WM_NCPAINT.
 748      * See WIN_HaveToDelayNCPAINT for a description of the mechanism
 749      */
 750     if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr, 0) )
 751         ex |= RDW_EX_DELAY_NCPAINT;
 752
 753     if (flags & RDW_UPDATENOW)
 754     {
 755         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 756             SendMessage16( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 757     }
 758     else if ((flags & RDW_ERASENOW) || (ex & RDW_EX_TOPFRAME))
 759     {
 760         UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
 761         HRGN hrgnRet;
 762
 763         hrgnRet = WIN_UpdateNCRgn(wndPtr,
 764                                   hrgn,
 765                                   UNC_REGION | UNC_CHECK |
 766                                   ((ex & RDW_EX_TOPFRAME) ? UNC_ENTIRE : 0) |
 767                                   ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
 768
 769         if( hrgnRet )
 770         {
 771             if( hrgnRet > 1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
 772             if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
 773             {
 774                 if( bIcon ) dcx |= DCX_WINDOW;
 775                 else
 776                 if( hrgnRet )
 777                     OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 778                                         wndPtr->rectWindow.top  - wndPtr->rectClient.top);
 779                 else
 780                     dcx &= ~DCX_INTERSECTRGN;
 781                 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
 782                 {
 783                     if (SendMessage16( hWnd, (bIcon) ? WM_ICONERASEBKGND
 784                                        : WM_ERASEBKGND, (WPARAM16)hDC, 0 ))
 785                     wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 786                     ReleaseDC( hWnd, hDC );
 787                 }
 788             }
 789         }
 790     }
 791
 792     if( !IsWindow(hWnd) ) return hrgn;
 793     ex &= ~RDW_EX_TOPFRAME;
 794
 795       /* ... and its child windows */
 796
 797     if( wndPtr->child && !(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE)
 798         && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
 799     {
 800         WND** list, **ppWnd;
 801
 802         if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 803         {
 804             wndPtr = NULL;
 805             for (ppWnd = list; *ppWnd; ppWnd++)
 806             {
 807                 WIN_UpdateWndPtr(&wndPtr,*ppWnd);
 808                 if (!IsWindow(wndPtr->hwndSelf)) continue;
 809                     if ( (wndPtr->dwStyle & WS_VISIBLE) &&
 810                          (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
 811                         hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
 812             }
 813             WIN_ReleaseWndPtr(wndPtr);
 814             WIN_ReleaseWinArray(list);
 815         }
 816     }
 817
 818     return hrgn;
 819 }
 820
 821 /***********************************************************************
 822  *           PAINT_RedrawWindow
 823  *
 824  */
 825 BOOL PAINT_RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 826                            HRGN hrgnUpdate, UINT flags, UINT ex )
 827 {
 828     HRGN hRgn = 0;
 829     RECT r, r2;
 830     POINT pt;
 831     WND* wndPtr;
 832
 833     if (!hwnd) hwnd = GetDesktopWindow();
 834     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 835
 836     /* check if the window or its parents are visible/not minimized */
 837
 838     if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) ) )
 839     {
 840         WIN_ReleaseWndPtr(wndPtr);
 841         return TRUE;
 842     }
 843
 844     if (TRACE_ON(win))
 845     {
 846         if( hrgnUpdate )
 847         {
 848             GetRgnBox( hrgnUpdate, &r );
 849             TRACE( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x, exflags=%04x\n",
 850                   hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags, ex);
 851         }
 852         else
 853         {
 854             if( rectUpdate )
 855                 r = *rectUpdate;
 856             else
 857                 SetRectEmpty( &r );
 858             TRACE( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x, exflags=%04x\n",
 859                         hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
 860                         r.top, r.right, r.bottom, hrgnUpdate, flags, ex );
 861         }
 862     }
 863
 864     /* prepare an update region in window coordinates */
 865
 866     if( flags & RDW_FRAME )
 867         r = wndPtr->rectWindow;
 868     else
 869         r = wndPtr->rectClient;
 870
 871     if( ex & RDW_EX_XYWINDOW )
 872     {
 873         pt.x = pt.y = 0;
 874         OffsetRect( &r, -wndPtr->rectWindow.left, -wndPtr->rectWindow.top );
 875     }
 876     else
 877     {
 878         pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 879         pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 880         OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
 881     }
 882
 883     if (flags & RDW_INVALIDATE)  /* ------------------------- Invalidate */
 884     {
 885         /* If the window doesn't have hrgnUpdate we leave hRgn zero
 886          * and put a new region straight into wndPtr->hrgnUpdate
 887          * so that RDW_UpdateRgns() won't have to do any extra work.
 888          */
 889
 890         if( hrgnUpdate )
 891         {
 892             if( wndPtr->hrgnUpdate )
 893                 hRgn = REGION_CropRgn( 0, hrgnUpdate, NULL, &pt );
 894             else
 895                 wndPtr->hrgnUpdate = REGION_CropRgn( 0, hrgnUpdate, &r, &pt );
 896         }
 897         else if( rectUpdate )
 898         {
 899             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 900             OffsetRect( &r2, pt.x, pt.y );
 901
 902 rect2i:
 903             if( wndPtr->hrgnUpdate == 0 )
 904                 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 905             else
 906                 hRgn = CreateRectRgnIndirect( &r2 );
 907         }
 908         else /* entire window or client depending on RDW_FRAME */
 909         {
 910             if( flags & RDW_FRAME )
 911             {
 912                 if( wndPtr->hrgnUpdate )
 913                     DeleteObject( wndPtr->hrgnUpdate );
 914                 wndPtr->hrgnUpdate = 1;
 915             }
 916             else
 917             {
 918                 GETCLIENTRECTW( wndPtr, r2 );
 919                 goto rect2i;
 920             }
 921         }
 922     }
 923     else if (flags & RDW_VALIDATE)  /* ------------------------- Validate */
 924     {
 925         /* In this we cannot leave with zero hRgn */
 926         if( hrgnUpdate )
 927         {
 928             hRgn = REGION_CropRgn( hRgn, hrgnUpdate,  &r, &pt );
 929             GetRgnBox( hRgn, &r2 );
 930             if( IsRectEmpty( &r2 ) ) goto END;
 931         }
 932         else if( rectUpdate )
 933         {
 934             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 935                 OffsetRect( &r2, pt.x, pt.y );
 936 rect2v:
 937             hRgn = CreateRectRgnIndirect( &r2 );
 938         }
 939         else /* entire window or client depending on RDW_FRAME */
 940         {
 941             if( flags & RDW_FRAME )
 942                 hRgn = 1;
 943             else
 944             {
 945                 GETCLIENTRECTW( wndPtr, r2 );
 946                 goto rect2v;
 947             }
 948         }
 949     }
 950
 951     /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
 952
 953     RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
 954
 955     /* Erase/update windows, from now on hRgn is a scratch region */
 956
 957     hRgn = RDW_Paint( wndPtr, (hRgn == 1) ? 0 : hRgn, flags, ex );
 958
 959 END:
 960     if( hRgn > 1 && (hRgn != hrgnUpdate) )
 961         DeleteObject(hRgn );
 962     WIN_ReleaseWndPtr(wndPtr);
 963     return TRUE;
 964 }
 965
 966
 967 /***********************************************************************
 968  *           RedrawWindow    (USER32.426)
 969  */
 970 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 971                               HRGN hrgnUpdate, UINT flags )
 972 {
 973     return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
 974 }
 975
 976
 977 /***********************************************************************
 978  *           RedrawWindow16    (USER.290)
 979  */
 980 BOOL16 WINAPI RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
 981                               HRGN16 hrgnUpdate, UINT16 flags )
 982 {
 983     if (rectUpdate)
 984     {
 985         RECT r;
 986         CONV_RECT16TO32( rectUpdate, &r );
 987         return (BOOL16)RedrawWindow( (HWND)hwnd, &r, hrgnUpdate, flags );
 988     }
 989     return (BOOL16)PAINT_RedrawWindow( (HWND)hwnd, NULL,
 990                                        (HRGN)hrgnUpdate, flags, 0 );
 991 }
 992
 993
 994 /***********************************************************************
 995  *           UpdateWindow16   (USER.124)
 996  */
 997 void WINAPI UpdateWindow16( HWND16 hwnd )
 998 {
 999     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN, 0 );
1000 }
1001
1002 /***********************************************************************
1003  *           UpdateWindow   (USER32.567)
1004  */
1005 void WINAPI UpdateWindow( HWND hwnd )
1006 {
1007     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN, 0 );
1008 }
1009
1010 /***********************************************************************
1011  *           InvalidateRgn16   (USER.126)
1012  */
1013 void WINAPI InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
1014 {
1015     PAINT_RedrawWindow((HWND)hwnd, NULL, (HRGN)hrgn,
1016                        RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1017 }
1018
1019
1020 /***********************************************************************
1021  *           InvalidateRgn   (USER32.329)
1022  */
1023 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
1024 {
1025     return PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1026 }
1027
1028
1029 /***********************************************************************
1030  *           InvalidateRect16   (USER.125)
1031  */
1032 void WINAPI InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
1033 {
1034     RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
1035 }
1036
1037
1038 /***********************************************************************
1039  *           InvalidateRect   (USER32.328)
1040  */
1041 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
1042 {
1043     return PAINT_RedrawWindow( hwnd, rect, 0,
1044                                RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1045 }
1046
1047
1048 /***********************************************************************
1049  *           ValidateRgn16   (USER.128)
1050  */
1051 void WINAPI ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
1052 {
1053     PAINT_RedrawWindow( (HWND)hwnd, NULL, (HRGN)hrgn,
1054                         RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1055 }
1056
1057
1058 /***********************************************************************
1059  *           ValidateRgn   (USER32.572)
1060  */
1061 void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
1062 {
1063     PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1064 }
1065
1066
1067 /***********************************************************************
1068  *           ValidateRect16   (USER.127)
1069  */
1070 void WINAPI ValidateRect16( HWND16 hwnd, const RECT16 *rect )
1071 {
1072     RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
1073 }
1074
1075
1076 /***********************************************************************
1077  *           ValidateRect   (USER32.571)
1078  */
1079 void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
1080 {
1081     PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1082 }
1083
1084
1085 /***********************************************************************
1086  *           GetUpdateRect16   (USER.190)
1087  */
1088 BOOL16 WINAPI GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
1089 {
1090     RECT r;
1091     BOOL16 ret;
1092
1093     if (!rect) return GetUpdateRect( hwnd, NULL, erase );
1094     ret = GetUpdateRect( hwnd, &r, erase );
1095     CONV_RECT32TO16( &r, rect );
1096     return ret;
1097 }
1098
1099
1100 /***********************************************************************
1101  *           GetUpdateRect   (USER32.297)
1102  */
1103 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
1104 {
1105     BOOL retvalue;
1106     WND * wndPtr = WIN_FindWndPtr( hwnd );
1107     if (!wndPtr) return FALSE;
1108
1109     if (rect)
1110     {
1111         if (wndPtr->hrgnUpdate > 1)
1112         {
1113             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
1114             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
1115             {
1116                 retvalue = FALSE;
1117                 goto END;
1118             }
1119             GetRgnBox( hrgn, rect );
1120             DeleteObject( hrgn );
1121             if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
1122             {
1123                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
1124                 {
1125                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
1126                 }
1127             }
1128         }
1129         else
1130         if( wndPtr->hrgnUpdate == 1 )
1131         {
1132             GetClientRect( hwnd, rect );
1133             if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
1134         }
1135         else
1136             SetRectEmpty( rect );
1137     }
1138     retvalue = (wndPtr->hrgnUpdate >= 1);
1139 END:
1140     WIN_ReleaseWndPtr(wndPtr);
1141     return retvalue;
1142 }
1143
1144
1145 /***********************************************************************
1146  *           GetUpdateRgn16   (USER.237)
1147  */
1148 INT16 WINAPI GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
1149 {
1150     return GetUpdateRgn( hwnd, hrgn, erase );
1151 }
1152
1153
1154 /***********************************************************************
1155  *           GetUpdateRgn    (USER32.298)
1156  */
1157 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
1158 {
1159     INT retval;
1160     WND * wndPtr = WIN_FindWndPtr( hwnd );
1161     if (!wndPtr) return ERROR;
1162
1163     if (wndPtr->hrgnUpdate == 0)
1164     {
1165         SetRectRgn( hrgn, 0, 0, 0, 0 );
1166         retval = NULLREGION;
1167         goto END;
1168     }
1169     else
1170     if (wndPtr->hrgnUpdate == 1)
1171     {
1172         SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
1173                                 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
1174         retval = SIMPLEREGION;
1175     }
1176     else
1177     {
1178         retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
1179         OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1180                          wndPtr->rectWindow.top - wndPtr->rectClient.top );
1181     }
1182     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
1183 END:
1184     WIN_ReleaseWndPtr(wndPtr);
1185     return retval;
1186 }
1187
1188
1189 /***********************************************************************
1190  *           ExcludeUpdateRgn16   (USER.238)
1191  */
1192 INT16 WINAPI ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
1193 {
1194     return ExcludeUpdateRgn( hdc, hwnd );
1195 }
1196
1197
1198 /***********************************************************************
1199  *           ExcludeUpdateRgn   (USER32.195)
1200  */
1201 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
1202 {
1203     RECT rect;
1204     WND * wndPtr;
1205
1206     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
1207
1208     if (wndPtr->hrgnUpdate)
1209     {
1210         INT ret;
1211         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
1212                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
1213                                       wndPtr->rectWindow.right - wndPtr->rectClient.left,
1214                                       wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
1215         if( wndPtr->hrgnUpdate > 1 )
1216         {
1217             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
1218             OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1219                             wndPtr->rectWindow.top - wndPtr->rectClient.top );
1220         }
1221
1222         /* do ugly coordinate translations in dce.c */
1223
1224         ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
1225         DeleteObject( hrgn );
1226         WIN_ReleaseWndPtr(wndPtr);
1227         return ret;
1228     }
1229     WIN_ReleaseWndPtr(wndPtr);
1230     return GetClipBox( hdc, &rect );
1231 }
1232
1233
1234
1235 /***********************************************************************
1236  *           FillRect16    (USER.81)
1237  * NOTE
1238  *   The Win16 variant doesn't support special color brushes like
1239  *   the Win32 one, despite the fact that Win16, as well as Win32,
1240  *   supports special background brushes for a window class.
1241  */
1242 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
1243 {
1244     HBRUSH prevBrush;
1245
1246     /* coordinates are logical so we cannot fast-check 'rect',
1247      * it will be done later in the PatBlt().
1248      */
1249
1250     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1251     PatBlt( hdc, rect->left, rect->top,
1252               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1253     SelectObject( hdc, prevBrush );
1254     return 1;
1255 }
1256
1257
1258 /***********************************************************************
1259  *           FillRect    (USER32.197)
1260  */
1261 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1262 {
1263     HBRUSH prevBrush;
1264
1265     if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
1266         hbrush = GetSysColorBrush( (INT) hbrush - 1 );
1267     }
1268
1269     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1270     PatBlt( hdc, rect->left, rect->top,
1271               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1272     SelectObject( hdc, prevBrush );
1273     return 1;
1274 }
1275
1276
1277 /***********************************************************************
1278  *           InvertRect16    (USER.82)
1279  */
1280 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
1281 {
1282     PatBlt( hdc, rect->left, rect->top,
1283               rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
1284 }
1285
1286
1287 /***********************************************************************
1288  *           InvertRect    (USER32.330)
1289  */
1290 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
1291 {
1292     return PatBlt( hdc, rect->left, rect->top,
1293                      rect->right - rect->left, rect->bottom - rect->top,
1294                      DSTINVERT );
1295 }
1296
1297
1298 /***********************************************************************
1299  *           FrameRect    (USER32.203)
1300  */
1301 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1302 {
1303     HBRUSH prevBrush;
1304     RECT r = *rect;
1305
1306     if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1307     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1308
1309     PatBlt( hdc, r.left, r.top, 1,
1310               r.bottom - r.top, PATCOPY );
1311     PatBlt( hdc, r.right - 1, r.top, 1,
1312               r.bottom - r.top, PATCOPY );
1313     PatBlt( hdc, r.left, r.top,
1314               r.right - r.left, 1, PATCOPY );
1315     PatBlt( hdc, r.left, r.bottom - 1,
1316               r.right - r.left, 1, PATCOPY );
1317
1318     SelectObject( hdc, prevBrush );
1319     return TRUE;
1320 }
1321
1322
1323 /***********************************************************************
1324  *           FrameRect16    (USER.83)
1325  */
1326 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1327 {
1328     RECT rect;
1329     CONV_RECT16TO32( rect16, &rect );
1330     return FrameRect( hdc, &rect, hbrush );
1331 }
1332
1333
1334 /***********************************************************************
1335  *           DrawFocusRect16    (USER.466)
1336  */
1337 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1338 {
1339     RECT rect32;
1340     CONV_RECT16TO32( rc, &rect32 );
1341     DrawFocusRect( hdc, &rect32 );
1342 }
1343
1344
1345 /***********************************************************************
1346  *           DrawFocusRect    (USER32.156)
1347  *
1348  * FIXME: PatBlt(PATINVERT) with background brush.
1349  */
1350 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1351 {
1352     HBRUSH hOldBrush;
1353     HPEN hOldPen, hNewPen;
1354     INT oldDrawMode, oldBkMode;
1355
1356     hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1357     hNewPen = CreatePen(PS_DOT, 1, GetSysColor(COLOR_WINDOWTEXT));
1358     hOldPen = SelectObject(hdc, hNewPen);
1359     oldDrawMode = SetROP2(hdc, R2_XORPEN);
1360     oldBkMode = SetBkMode(hdc, TRANSPARENT);
1361
1362     Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1363
1364     SetBkMode(hdc, oldBkMode);
1365     SetROP2(hdc, oldDrawMode);
1366     SelectObject(hdc, hOldPen);
1367     DeleteObject(hNewPen);
1368     SelectObject(hdc, hOldBrush);
1369
1370     return TRUE;
1371 }
1372
1373 /**********************************************************************
1374  *          DrawAnimatedRects16  (USER.448)
1375  */
1376 BOOL16 WINAPI DrawAnimatedRects16( HWND16 hwnd, INT16 idAni,
1377                                    const RECT16* lprcFrom,
1378                                    const RECT16* lprcTo )
1379 {
1380     RECT rcFrom32, rcTo32;
1381
1382     rcFrom32.left       = (INT)lprcFrom->left;
1383     rcFrom32.top        = (INT)lprcFrom->top;
1384     rcFrom32.right      = (INT)lprcFrom->right;
1385     rcFrom32.bottom     = (INT)lprcFrom->bottom;
1386
1387     rcTo32.left         = (INT)lprcTo->left;
1388     rcTo32.top          = (INT)lprcTo->top;
1389     rcTo32.right        = (INT)lprcTo->right;
1390     rcTo32.bottom       = (INT)lprcTo->bottom;
1391
1392     return DrawAnimatedRects((HWND)hwnd, (INT)idAni, &rcFrom32, &rcTo32);
1393 }
1394
1395
1396 /**********************************************************************
1397  *          DrawAnimatedRects  (USER32.153)
1398  */
1399 BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
1400                                    const RECT* lprcFrom,
1401                                    const RECT* lprcTo )
1402 {
1403     FIXME_(win)("(0x%x,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1404     return TRUE;
1405 }
1406
1407
1408 /**********************************************************************
1409  *          PAINTING_DrawStateJam
1410  *
1411  * Jams in the requested type in the dc
1412  */
1413 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1414                                     DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1415                                     LPRECT rc, UINT dtflags,
1416                                     BOOL unicode, BOOL _32bit)
1417 {
1418     HDC memdc;
1419     HBITMAP hbmsave;
1420     BOOL retval;
1421     INT cx = rc->right - rc->left;
1422     INT cy = rc->bottom - rc->top;
1423
1424     switch(opcode)
1425     {
1426     case DST_TEXT:
1427     case DST_PREFIXTEXT:
1428         if(unicode)
1429             return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1430         else if(_32bit)
1431             return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1432         else
1433             return DrawTextA(hdc, (LPSTR)PTR_SEG_TO_LIN(lp), (INT)wp, rc, dtflags);
1434
1435     case DST_ICON:
1436         return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1437
1438     case DST_BITMAP:
1439         memdc = CreateCompatibleDC(hdc);
1440         if(!memdc) return FALSE;
1441         hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1442         if(!hbmsave)
1443         {
1444             DeleteDC(memdc);
1445             return FALSE;
1446         }
1447         retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1448         SelectObject(memdc, hbmsave);
1449         DeleteDC(memdc);
1450         return retval;
1451
1452     case DST_COMPLEX:
1453         if(func)
1454             if(_32bit)
1455                 return func(hdc, lp, wp, cx, cy);
1456             else
1457                 return (BOOL)((DRAWSTATEPROC16)func)((HDC16)hdc, (LPARAM)lp, (WPARAM16)wp, (INT16)cx, (INT16)cy);
1458         else
1459             return FALSE;
1460     }
1461     return FALSE;
1462 }
1463
1464 /**********************************************************************
1465  *      PAINTING_DrawState()
1466  */
1467 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr,
1468                                    DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1469                                    INT x, INT y, INT cx, INT cy,
1470                                    UINT flags, BOOL unicode, BOOL _32bit)
1471 {
1472     HBITMAP hbm, hbmsave;
1473     HFONT hfsave;
1474     HBRUSH hbsave;
1475     HDC memdc;
1476     RECT rc;
1477     UINT dtflags = DT_NOCLIP;
1478     COLORREF fg, bg;
1479     UINT opcode = flags & 0xf;
1480     INT len = wp;
1481     BOOL retval, tmp;
1482
1483     if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len)    /* The string is '\0' terminated */
1484     {
1485         if(unicode)
1486             len = lstrlenW((LPWSTR)lp);
1487         else if(_32bit)
1488             len = lstrlenA((LPSTR)lp);
1489         else
1490             len = lstrlenA((LPSTR)PTR_SEG_TO_LIN(lp));
1491     }
1492
1493     /* Find out what size the image has if not given by caller */
1494     if(!cx || !cy)
1495     {
1496         SIZE s;
1497         CURSORICONINFO *ici;
1498         BITMAP bm;
1499
1500         switch(opcode)
1501         {
1502         case DST_TEXT:
1503         case DST_PREFIXTEXT:
1504             if(unicode)
1505                 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1506             else if(_32bit)
1507                 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1508             else
1509                 retval = GetTextExtentPoint32A(hdc, PTR_SEG_TO_LIN(lp), len, &s);
1510             if(!retval) return FALSE;
1511             break;
1512
1513         case DST_ICON:
1514             ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1515             if(!ici) return FALSE;
1516             s.cx = ici->nWidth;
1517             s.cy = ici->nHeight;
1518             GlobalUnlock16((HGLOBAL16)lp);
1519             break;
1520
1521         case DST_BITMAP:
1522             if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1523                 return FALSE;
1524             s.cx = bm.bmWidth;
1525             s.cy = bm.bmHeight;
1526             break;
1527
1528         case DST_COMPLEX: /* cx and cy must be set in this mode */
1529             return FALSE;
1530         }
1531
1532         if(!cx) cx = s.cx;
1533         if(!cy) cy = s.cy;
1534     }
1535
1536     rc.left   = x;
1537     rc.top    = y;
1538     rc.right  = x + cx;
1539     rc.bottom = y + cy;
1540
1541     if(flags & DSS_RIGHT)    /* This one is not documented in the win32.hlp file */
1542         dtflags |= DT_RIGHT;
1543     if(opcode == DST_TEXT)
1544         dtflags |= DT_NOPREFIX;
1545
1546     /* For DSS_NORMAL we just jam in the image and return */
1547     if((flags & 0x7ff0) == DSS_NORMAL)
1548     {
1549         return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode, _32bit);
1550     }
1551
1552     /* For all other states we need to convert the image to B/W in a local bitmap */
1553     /* before it is displayed */
1554     fg = SetTextColor(hdc, RGB(0, 0, 0));
1555     bg = SetBkColor(hdc, RGB(255, 255, 255));
1556     hbm = (HBITMAP)NULL; hbmsave = (HBITMAP)NULL;
1557     memdc = (HDC)NULL; hbsave = (HBRUSH)NULL;
1558     retval = FALSE; /* assume failure */
1559
1560     /* From here on we must use "goto cleanup" when something goes wrong */
1561     hbm     = CreateBitmap(cx, cy, 1, 1, NULL);
1562     if(!hbm) goto cleanup;
1563     memdc   = CreateCompatibleDC(hdc);
1564     if(!memdc) goto cleanup;
1565     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1566     if(!hbmsave) goto cleanup;
1567     rc.left = rc.top = 0;
1568     rc.right = cx;
1569     rc.bottom = cy;
1570     if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1571     SetBkColor(memdc, RGB(255, 255, 255));
1572     SetTextColor(memdc, RGB(0, 0, 0));
1573     hfsave  = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1574     if(!hfsave && (opcode == DST_TEXT || opcode == DST_PREFIXTEXT)) goto cleanup;
1575     tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode, _32bit);
1576     if(hfsave) SelectObject(memdc, hfsave);
1577     if(!tmp) goto cleanup;
1578
1579     /* These states cause the image to be dithered */
1580     if(flags & (DSS_UNION|DSS_DISABLED))
1581     {
1582         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1583         if(!hbsave) goto cleanup;
1584         tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1585         if(hbsave) SelectObject(memdc, hbsave);
1586         if(!tmp) goto cleanup;
1587     }
1588
1589     hbsave = (HBRUSH)SelectObject(hdc, hbr ? hbr : GetStockObject(WHITE_BRUSH));
1590     if(!hbsave) goto cleanup;
1591
1592     if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1593
1594     /* DSS_DEFAULT makes the image boldface */
1595     if(flags & DSS_DEFAULT)
1596     {
1597         if(!BitBlt(hdc, x+1, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1598     }
1599
1600     retval = TRUE; /* We succeeded */
1601
1602 cleanup:
1603     SetTextColor(hdc, fg);
1604     SetBkColor(hdc, bg);
1605
1606     if(hbsave)  SelectObject(hdc, hbsave);
1607     if(hbmsave) SelectObject(memdc, hbmsave);
1608     if(hbm)     DeleteObject(hbm);
1609     if(memdc)   DeleteDC(memdc);
1610
1611     return retval;
1612 }
1613
1614 /**********************************************************************
1615  *      DrawStateA()   (USER32.162)
1616  */
1617 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1618                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1619                    INT x, INT y, INT cx, INT cy, UINT flags)
1620 {
1621     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE, TRUE);
1622 }
1623
1624 /**********************************************************************
1625  *      DrawStateW()   (USER32.163)
1626  */
1627 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1628                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1629                    INT x, INT y, INT cx, INT cy, UINT flags)
1630 {
1631     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE, TRUE);
1632 }
1633
1634 /**********************************************************************
1635  *      DrawState16()   (USER.449)
1636  */
1637 BOOL16 WINAPI DrawState16(HDC16 hdc, HBRUSH16 hbr,
1638                    DRAWSTATEPROC16 func, LPARAM ldata, WPARAM16 wdata,
1639                    INT16 x, INT16 y, INT16 cx, INT16 cy, UINT16 flags)
1640 {
1641     return PAINTING_DrawState(hdc, hbr, (DRAWSTATEPROC)func, ldata, wdata, x, y, cx, cy, flags, FALSE, FALSE);
1642 }
1643
1644
1645 /***********************************************************************
1646  *           SelectPalette16    (USER.282)
1647  */
1648 HPALETTE16 WINAPI SelectPalette16( HDC16 hDC, HPALETTE16 hPal,
1649                                    BOOL16 bForceBackground )
1650 {
1651     return SelectPalette( hDC, hPal, bForceBackground );
1652 }
1653
1654
1655 /***********************************************************************
1656  *           RealizePalette16    (USER.283)
1657  */
1658 UINT16 WINAPI RealizePalette16( HDC16 hDC )
1659 {
1660     return RealizePalette( hDC );
1661 }