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 "wine/unicode.h"
  12 #include "region.h"
  13 #include "user.h"
  14 #include "win.h"
  15 #include "queue.h"
  16 #include "dce.h"
  17 #include "heap.h"
  18 #include "debugtools.h"
  19
  20 DEFAULT_DEBUG_CHANNEL(win);
  21 DECLARE_DEBUG_CHANNEL(nonclient);
  22
  23 /* client rect in window coordinates */
  24
  25 #define GETCLIENTRECTW( wnd, r )        (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
  26                                         (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
  27                                         (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
  28                                         (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
  29
  30   /* Last COLOR id */
  31 #define COLOR_MAX   COLOR_GRADIENTINACTIVECAPTION
  32
  33   /* Last CTLCOLOR id */
  34 #define CTLCOLOR_MAX   CTLCOLOR_STATIC
  35
  36
  37 /***********************************************************************
  38  *           WIN_HaveToDelayNCPAINT
  39  *
  40  * Currently, in the Wine painting mechanism, the WM_NCPAINT message
  41  * is generated as soon as a region intersecting the non-client area
  42  * of a window is invalidated.
  43  *
  44  * This technique will work fine for all windows whose parents
  45  * have the WS_CLIPCHILDREN style. When the parents have that style,
  46  * they are not going to override the contents of their children.
  47  * However, when the parent doesn't have that style, Windows relies
  48  * on a "painter's algorithm" to display the contents of the windows.
  49  * That is, windows are painted from back to front. This includes the
  50  * non-client area.
  51  *
  52  * This method looks at the current state of a window to determine
  53  * if the sending of the WM_NCPAINT message should be delayed until
  54  * the BeginPaint call.
  55  *
  56  * PARAMS:
  57  *   wndPtr   - A Locked window pointer to the window we're
  58  *              examining.
  59  *   uncFlags - This is the flag passed to the WIN_UpdateNCRgn
  60  *              function. This is a shortcut for the cases when
  61  *              we already know when to avoid scanning all the
  62  *              parents of a window. If you already know that this
  63  *              window's NCPAINT should be delayed, set the
  64  *              UNC_DELAY_NCPAINT flag for this parameter.
  65  *
  66  *              This shortcut behavior is implemented in the
  67  *              RDW_Paint() method.
  68  *
  69  */
  70 static BOOL WIN_HaveToDelayNCPAINT(
  71   WND* wndPtr,
  72   UINT uncFlags)
  73 {
  74   WND* parentWnd = NULL;
  75
  76   /*
  77    * Test the shortcut first. (duh)
  78    */
  79   if (uncFlags & UNC_DELAY_NCPAINT)
  80     return TRUE;
  81
  82   /*
  83    * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
  84    * method only. This is another shortcut to avoid going
  85    * up the parent's chain of the window to finally
  86    * figure-out that none of them has an invalid region.
  87    */
  88   if (uncFlags & UNC_IN_BEGINPAINT)
  89     return FALSE;
  90
  91   /*
  92    * Scan all the parents of this window to find a window
  93    * that doesn't have the WS_CLIPCHILDREN style and that
  94    * has an invalid region.
  95    */
  96   parentWnd = WIN_LockWndPtr(wndPtr->parent);
  97
  98   while (parentWnd!=NULL)
  99   {
 100     if ( ((parentWnd->dwStyle & WS_CLIPCHILDREN) == 0) &&
 101          (parentWnd->hrgnUpdate != 0) )
 102     {
 103       WIN_ReleaseWndPtr(parentWnd);
 104       return TRUE;
 105     }
 106
 107     WIN_UpdateWndPtr(&parentWnd, parentWnd->parent);
 108   }
 109
 110   WIN_ReleaseWndPtr(parentWnd);
 111
 112   return FALSE;
 113 }
 114
 115 /***********************************************************************
 116  *           WIN_UpdateNCRgn
 117  *
 118  *  Things to do:
 119  *      Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
 120  *      Crop hrgnUpdate to a client rect, especially if it 1.
 121  *      If UNC_REGION is set return update region for the client rect.
 122  *
 123  *  NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
 124  *        The trick is that when the returned region handle may be different from hRgn.
 125  *        In this case the old hRgn must be considered gone. BUT, if the returned value
 126  *        is 1 then the hRgn is preserved and RDW_Paint() will have to get
 127  *        a DC without extra clipping region.
 128  */
 129 HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
 130 {
 131     RECT  r;
 132     HRGN  hClip = 0;
 133     HRGN  hrgnRet = 0;
 134
 135     TRACE_(nonclient)("hwnd %04x [%04x] hrgn %04x, unc %04x, ncf %i\n",
 136                       wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
 137
 138     /* desktop window doesn't have a nonclient area */
 139     if(wnd == WIN_GetDesktop())
 140     {
 141         wnd->flags &= ~WIN_NEEDS_NCPAINT;
 142         if( wnd->hrgnUpdate > 1 )
 143             hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
 144         else
 145         {
 146             hrgnRet = wnd->hrgnUpdate;
 147         }
 148         WIN_ReleaseDesktop();
 149         return hrgnRet;
 150     }
 151     WIN_ReleaseDesktop();
 152
 153     if ((wnd->hwndSelf == GetForegroundWindow()) &&
 154         !(wnd->flags & WIN_NCACTIVATED) )
 155     {
 156         wnd->flags |= WIN_NCACTIVATED;
 157         uncFlags |= UNC_ENTIRE;
 158     }
 159
 160     /*
 161      * If the window's non-client area needs to be painted,
 162      */
 163     if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
 164          !WIN_HaveToDelayNCPAINT(wnd, uncFlags) )
 165     {
 166             RECT r2, r3;
 167
 168             wnd->flags &= ~WIN_NEEDS_NCPAINT;
 169             GETCLIENTRECTW( wnd, r );
 170
 171             TRACE_(nonclient)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
 172                                 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
 173             if( wnd->hrgnUpdate > 1 )
 174             {
 175                 /* Check if update rgn overlaps with nonclient area */
 176
 177                 GetRgnBox( wnd->hrgnUpdate, &r2 );
 178                 UnionRect( &r3, &r2, &r );
 179                 if( r3.left != r.left || r3.top != r.top ||
 180                     r3.right != r.right || r3.bottom != r.bottom ) /* it does */
 181                 {
 182                     /* crop hrgnUpdate, save old one in hClip - the only
 183                      * case that places a valid region handle in hClip */
 184
 185                     hClip = wnd->hrgnUpdate;
 186                     wnd->hrgnUpdate = REGION_CropRgn( hRgn, hClip, &r, NULL );
 187                     if( uncFlags & UNC_REGION ) hrgnRet = hClip;
 188                 }
 189
 190                 if( uncFlags & UNC_CHECK )
 191                 {
 192                     GetRgnBox( wnd->hrgnUpdate, &r3 );
 193                     if( IsRectEmpty( &r3 ) )
 194                     {
 195                         /* delete the update region since all invalid
 196                          * parts were in the nonclient area */
 197
 198                         DeleteObject( wnd->hrgnUpdate );
 199                         wnd->hrgnUpdate = 0;
 200                         if(!(wnd->flags & WIN_INTERNAL_PAINT))
 201                             QUEUE_DecPaintCount( wnd->hmemTaskQ );
 202
 203                         wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
 204                     }
 205                 }
 206
 207                 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
 208             }
 209             else
 210             if( wnd->hrgnUpdate == 1 )/* entire window */
 211             {
 212                 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 213                 if( uncFlags & UNC_REGION ) hrgnRet = 1;
 214                 uncFlags |= UNC_ENTIRE;
 215             }
 216     }
 217     else /* no WM_NCPAINT unless forced */
 218     {
 219         if( wnd->hrgnUpdate >  1 )
 220         {
 221 copyrgn:
 222             if( uncFlags & UNC_REGION )
 223                 hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
 224         }
 225         else
 226         if( wnd->hrgnUpdate == 1 && (uncFlags & UNC_UPDATE) )
 227         {
 228             GETCLIENTRECTW( wnd, r );
 229             wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 230             if( uncFlags & UNC_REGION ) hrgnRet = 1;
 231         }
 232     }
 233
 234     if(!hClip && (uncFlags & UNC_ENTIRE) )
 235     {
 236         /* still don't do anything if there is no nonclient area */
 237         hClip = (memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
 238     }
 239
 240     if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
 241     {
 242         if ( hClip == hrgnRet && hrgnRet > 1 ) {
 243             hClip = CreateRectRgn( 0, 0, 0, 0 );
 244             CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
 245         }
 246
 247         SendMessageA( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
 248         if( (hClip > 1) && (hClip != hRgn) && (hClip != hrgnRet) )
 249             DeleteObject( hClip );
 250         /*
 251          * Since all Window locks are suspended while processing the WM_NCPAINT
 252          * we want to make sure the window still exists before continuing.
 253          */
 254         if (!IsWindow(wnd->hwndSelf))
 255         {
 256           DeleteObject(hrgnRet);
 257           hrgnRet=0;
 258         }
 259     }
 260
 261     TRACE_(nonclient)("returning %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet, hClip, wnd->hrgnUpdate );
 262
 263     return hrgnRet;
 264 }
 265
 266
 267 /***********************************************************************
 268  *              BeginPaint (USER.39)
 269  */
 270 HDC16 WINAPI BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
 271 {
 272     PAINTSTRUCT ps;
 273
 274     BeginPaint( hwnd, &ps );
 275     lps->hdc            = ps.hdc;
 276     lps->fErase         = ps.fErase;
 277     lps->rcPaint.top    = ps.rcPaint.top;
 278     lps->rcPaint.left   = ps.rcPaint.left;
 279     lps->rcPaint.right  = ps.rcPaint.right;
 280     lps->rcPaint.bottom = ps.rcPaint.bottom;
 281     lps->fRestore       = ps.fRestore;
 282     lps->fIncUpdate     = ps.fIncUpdate;
 283     return lps->hdc;
 284 }
 285
 286
 287 /***********************************************************************
 288  *              BeginPaint (USER32.@)
 289  */
 290 HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
 291 {
 292     BOOL bIcon;
 293     HRGN hrgnUpdate;
 294     RECT clipRect, clientRect;
 295     WND *wndPtr = WIN_FindWndPtr( hwnd );
 296     if (!wndPtr) return 0;
 297
 298     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
 299
 300     wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 301
 302     /* send WM_NCPAINT and make sure hrgnUpdate is a valid rgn handle */
 303     WIN_UpdateNCRgn( wndPtr, 0, UNC_UPDATE | UNC_IN_BEGINPAINT);
 304
 305     /*
 306      * Make sure the window is still a window. All window locks are suspended
 307      * when the WM_NCPAINT is sent.
 308      */
 309     if (!IsWindow(wndPtr->hwndSelf))
 310     {
 311         WIN_ReleaseWndPtr(wndPtr);
 312         return 0;
 313     }
 314
 315     if( ((hrgnUpdate = wndPtr->hrgnUpdate) != 0) || (wndPtr->flags & WIN_INTERNAL_PAINT))
 316         QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 317
 318     wndPtr->hrgnUpdate = 0;
 319     wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 320
 321     HideCaret( hwnd );
 322
 323     TRACE("hrgnUpdate = %04x, \n", hrgnUpdate);
 324
 325     if (GetClassWord16(wndPtr->hwndSelf, GCW_STYLE) & CS_PARENTDC)
 326     {
 327         /* Don't clip the output to the update region for CS_PARENTDC window */
 328         if( hrgnUpdate )
 329             DeleteObject(hrgnUpdate);
 330         lps->hdc = GetDCEx( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
 331                               (bIcon ? DCX_WINDOW : 0) );
 332     }
 333     else
 334     {
 335         if( hrgnUpdate ) /* convert to client coordinates */
 336             OffsetRgn( hrgnUpdate, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 337                                    wndPtr->rectWindow.top - wndPtr->rectClient.top );
 338         lps->hdc = GetDCEx(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
 339                              DCX_WINDOWPAINT | DCX_USESTYLE | (bIcon ? DCX_WINDOW : 0) );
 340         /* ReleaseDC() in EndPaint() will delete the region */
 341     }
 342
 343     TRACE("hdc = %04x\n", lps->hdc);
 344
 345     if (!lps->hdc)
 346     {
 347         WARN("GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
 348         WIN_ReleaseWndPtr(wndPtr);
 349         return 0;
 350     }
 351
 352     /* It is possible that the clip box is bigger than the window itself,
 353        if CS_PARENTDC flag is set. Windows never return a paint rect bigger
 354        than the window itself, so we need to intersect the cliprect with
 355        the window  */
 356
 357     GetClientRect( hwnd, &clientRect );
 358
 359     GetClipBox( lps->hdc, &clipRect );
 360     LPtoDP(lps->hdc, (LPPOINT)&clipRect, 2);      /* GetClipBox returns LP */
 361
 362     IntersectRect(&lps->rcPaint, &clientRect, &clipRect);
 363     DPtoLP(lps->hdc, (LPPOINT)&lps->rcPaint, 2);  /* we must return LP */
 364
 365     TRACE("box = (%i,%i - %i,%i)\n", lps->rcPaint.left, lps->rcPaint.top,
 366                     lps->rcPaint.right, lps->rcPaint.bottom );
 367
 368     if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 369     {
 370         wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 371         lps->fErase = !SendMessageA(hwnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND,
 372                                     (WPARAM16)lps->hdc, 0 );
 373     }
 374     else lps->fErase = TRUE;
 375
 376     WIN_ReleaseWndPtr(wndPtr);
 377     return lps->hdc;
 378 }
 379
 380
 381 /***********************************************************************
 382  *              EndPaint (USER.40)
 383  */
 384 BOOL16 WINAPI EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
 385 {
 386     ReleaseDC16( hwnd, lps->hdc );
 387     ShowCaret( hwnd );
 388     return TRUE;
 389 }
 390
 391
 392 /***********************************************************************
 393  *              EndPaint (USER32.@)
 394  */
 395 BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
 396 {
 397     ReleaseDC( hwnd, lps->hdc );
 398     ShowCaret( hwnd );
 399     return TRUE;
 400 }
 401
 402
 403 /***********************************************************************
 404  *              FillWindow (USER.324)
 405  */
 406 void WINAPI FillWindow16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
 407 {
 408     RECT rect;
 409     RECT16 rc16;
 410     GetClientRect( hwnd, &rect );
 411     DPtoLP( hdc, (LPPOINT)&rect, 2 );
 412     CONV_RECT32TO16( &rect, &rc16 );
 413     PaintRect16( hwndParent, hwnd, hdc, hbrush, &rc16 );
 414 }
 415
 416
 417 /***********************************************************************
 418  *           PAINT_GetControlBrush
 419  */
 420 static HBRUSH16 PAINT_GetControlBrush( HWND hParent, HWND hWnd, HDC16 hDC, UINT16 ctlType )
 421 {
 422     HBRUSH16 bkgBrush = (HBRUSH16)SendMessageA( hParent, WM_CTLCOLORMSGBOX + ctlType,
 423                                                              (WPARAM)hDC, (LPARAM)hWnd );
 424     if( !IsGDIObject16(bkgBrush) )
 425         bkgBrush = DEFWND_ControlColor( hDC, ctlType );
 426     return bkgBrush;
 427 }
 428
 429
 430 /***********************************************************************
 431  *              PaintRect (USER.325)
 432  */
 433 void WINAPI PaintRect16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
 434                        HBRUSH16 hbrush, const RECT16 *rect)
 435 {
 436     if( hbrush <= CTLCOLOR_MAX )
 437     {
 438         if( hwndParent )
 439             hbrush = PAINT_GetControlBrush( hwndParent, hwnd, hdc, (UINT16)hbrush );
 440         else
 441             return;
 442     }
 443     if( hbrush )
 444         FillRect16( hdc, rect, hbrush );
 445 }
 446
 447
 448 /***********************************************************************
 449  *              GetControlBrush (USER.326)
 450  */
 451 HBRUSH16 WINAPI GetControlBrush16( HWND16 hwnd, HDC16 hdc, UINT16 ctlType )
 452 {
 453     WND* wndPtr = WIN_FindWndPtr( hwnd );
 454     HBRUSH16 retvalue;
 455
 456     if((ctlType <= CTLCOLOR_MAX) && wndPtr )
 457     {
 458         WND* parent;
 459         if( wndPtr->dwStyle & WS_POPUP ) parent = WIN_LockWndPtr(wndPtr->owner);
 460         else parent = WIN_LockWndPtr(wndPtr->parent);
 461         if( !parent ) parent = wndPtr;
 462         retvalue = (HBRUSH16)PAINT_GetControlBrush( parent->hwndSelf, hwnd, hdc, ctlType );
 463         WIN_ReleaseWndPtr(parent);
 464         goto END;
 465     }
 466     retvalue = (HBRUSH16)0;
 467 END:
 468     WIN_ReleaseWndPtr(wndPtr);
 469     return retvalue;
 470 }
 471
 472
 473 /***********************************************************************
 474  *              RDW_ValidateParent [RDW_UpdateRgns() helper]
 475  *
 476  *  Validate the portions of parents that are covered by a validated child
 477  *  wndPtr = child
 478  */
 479 void  RDW_ValidateParent(WND *wndChild)
 480 {
 481     WND *wndParent = WIN_LockWndPtr(wndChild->parent);
 482     WND *wndDesktop = WIN_GetDesktop();
 483     HRGN hrg;
 484
 485     if (wndChild->hrgnUpdate == 1 ) {
 486         RECT r;
 487         r.left = 0;
 488         r.top = 0;
 489         r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
 490         r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
 491         hrg = CreateRectRgnIndirect( &r );
 492     } else
 493         hrg = wndChild->hrgnUpdate;
 494
 495     while ((wndParent) && (wndParent != wndDesktop) ) {
 496         if (!(wndParent->dwStyle & WS_CLIPCHILDREN))
 497         {
 498             if (wndParent->hrgnUpdate != 0)
 499             {
 500                 POINT ptOffset;
 501                 RECT rect, rectParent;
 502                 if( wndParent->hrgnUpdate == 1 )
 503                 {
 504                    RECT r;
 505
 506                    r.left = 0;
 507                    r.top = 0;
 508                    r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
 509                    r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
 510
 511                    wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
 512                 }
 513                 /* we must offset the child region by the offset of the child rect in the parent */
 514                 GetWindowRect(wndParent->hwndSelf, &rectParent);
 515                 GetWindowRect(wndChild->hwndSelf, &rect);
 516                 ptOffset.x = rect.left - rectParent.left;
 517                 ptOffset.y = rect.top - rectParent.top;
 518                 OffsetRgn( hrg, ptOffset.x, ptOffset.y );
 519                 CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF );
 520                 OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
 521             }
 522         }
 523         WIN_UpdateWndPtr(&wndParent, wndParent->parent);
 524     }
 525     if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
 526     WIN_ReleaseWndPtr(wndParent);
 527     WIN_ReleaseDesktop();
 528 }
 529
 530 /***********************************************************************
 531  *              RDW_UpdateRgns [RedrawWindow() helper]
 532  *
 533  *  Walks the window tree and adds/removes parts of the hRgn to/from update
 534  *  regions of windows that overlap it. Also, manages internal paint flags.
 535  *
 536  *  NOTE: Walks the window tree so the caller must lock it.
 537  *        MUST preserve hRgn (can modify but then has to restore).
 538  */
 539 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
 540 {
 541     /*
 542      * Called only when one of the following is set:
 543      * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
 544      */
 545
 546     BOOL bHadOne =  wndPtr->hrgnUpdate && hRgn;
 547     BOOL bChildren =  ( wndPtr->child && !(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE)
 548                         && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
 549     RECT r;
 550
 551     r.left = 0;
 552     r.top = 0;
 553     r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
 554     r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
 555
 556     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
 557
 558     if( flags & RDW_INVALIDATE )
 559     {
 560         if( hRgn > 1 )
 561         {
 562             switch( wndPtr->hrgnUpdate )
 563             {
 564                 default:
 565                         CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
 566                         /* fall through */
 567                 case 0:
 568                         wndPtr->hrgnUpdate = REGION_CropRgn( wndPtr->hrgnUpdate,
 569                                                              wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
 570                                                              &r, NULL );
 571                         if( !bHadOne )
 572                         {
 573                             GetRgnBox( wndPtr->hrgnUpdate, &r );
 574                             if( IsRectEmpty( &r ) )
 575                             {
 576                                 DeleteObject( wndPtr->hrgnUpdate );
 577                                 wndPtr->hrgnUpdate = 0;
 578                                 goto end;
 579                             }
 580                         }
 581                         break;
 582                 case 1: /* already an entire window */
 583                         break;
 584             }
 585         }
 586         else if( hRgn == 1 )
 587         {
 588             if( wndPtr->hrgnUpdate > 1 )
 589                 DeleteObject( wndPtr->hrgnUpdate );
 590             wndPtr->hrgnUpdate = 1;
 591         }
 592         else
 593             hRgn = wndPtr->hrgnUpdate;  /* this is a trick that depends on code in PAINT_RedrawWindow() */
 594
 595         if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 596             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 597
 598         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 599         if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 600         flags    |= RDW_FRAME;
 601     }
 602     else if( flags & RDW_VALIDATE )
 603     {
 604         if( wndPtr->hrgnUpdate )
 605         {
 606             if( hRgn > 1 )
 607             {
 608                 if( wndPtr->hrgnUpdate == 1 )
 609                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
 610
 611                 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
 612                     == NULLREGION )
 613                     goto EMPTY;
 614             }
 615             else /* validate everything */
 616             {
 617                 if( wndPtr->hrgnUpdate > 1 )
 618                 {
 619 EMPTY:
 620                     DeleteObject( wndPtr->hrgnUpdate );
 621                 }
 622                 wndPtr->hrgnUpdate = 0;
 623             }
 624
 625             if( !wndPtr->hrgnUpdate )
 626             {
 627                 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 628                 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 629                     QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 630             }
 631         }
 632
 633         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 634         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 635
 636     }
 637
 638     if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
 639         RDW_ValidateParent(wndPtr); /* validate parent covered by region */
 640
 641     /* in/validate child windows that intersect with the region if it
 642      * is a valid handle. */
 643
 644     if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
 645     {
 646         if( hRgn > 1 && bChildren )
 647         {
 648             WND* wnd = wndPtr->child;
 649             POINT ptTotal, prevOrigin = {0,0};
 650             POINT ptClient;
 651
 652             ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 653             ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 654
 655             for( ptTotal.x = ptTotal.y = 0; wnd; wnd = wnd->next )
 656             {
 657                 if( wnd->dwStyle & WS_VISIBLE )
 658                 {
 659                     POINT ptOffset;
 660
 661                     r.left = wnd->rectWindow.left + ptClient.x;
 662                     r.right = wnd->rectWindow.right + ptClient.x;
 663                     r.top = wnd->rectWindow.top + ptClient.y;
 664                     r.bottom = wnd->rectWindow.bottom + ptClient.y;
 665
 666                     ptOffset.x = r.left - prevOrigin.x;
 667                     ptOffset.y = r.top - prevOrigin.y;
 668                     OffsetRect( &r, -ptTotal.x, -ptTotal.y );
 669
 670                     if( RectInRegion( hRgn, &r ) )
 671                     {
 672                         OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
 673                         RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 674                         prevOrigin.x = r.left + ptTotal.x;
 675                         prevOrigin.y = r.top + ptTotal.y;
 676                         ptTotal.x += ptOffset.x;
 677                         ptTotal.y += ptOffset.y;
 678                     }
 679                 }
 680             }
 681             OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
 682             bChildren = 0;
 683         }
 684     }
 685
 686     /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
 687
 688     if( bChildren )
 689     {
 690         WND* wnd;
 691         for( wnd = wndPtr->child; wnd; wnd = wnd->next )
 692              if( wnd->dwStyle & WS_VISIBLE )
 693                  RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 694     }
 695
 696 end:
 697
 698     /* Set/clear internal paint flag */
 699
 700     if (flags & RDW_INTERNALPAINT)
 701     {
 702         if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 703             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 704         wndPtr->flags |= WIN_INTERNAL_PAINT;
 705     }
 706     else if (flags & RDW_NOINTERNALPAINT)
 707     {
 708         if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
 709             QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 710         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 711     }
 712 }
 713
 714 /***********************************************************************
 715  *           RDW_Paint [RedrawWindow() helper]
 716  *
 717  * Walks the window tree and paints/erases windows that have
 718  * nonzero update regions according to redraw flags. hrgn is a scratch
 719  * region passed down during recursion. Must not be 1.
 720  *
 721  */
 722 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
 723 {
 724 /* NOTE: wndPtr is locked by caller.
 725  *
 726  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 727  * SendMessage() calls. This is a comment inside DefWindowProc() source
 728  * from 16-bit SDK:
 729  *
 730  *   This message avoids lots of inter-app message traffic
 731  *   by switching to the other task and continuing the
 732  *   recursion there.
 733  *
 734  * wParam         = flags
 735  * LOWORD(lParam) = hrgnClip
 736  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 737  *
 738  */
 739     HDC  hDC;
 740     HWND hWnd = wndPtr->hwndSelf;
 741     BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
 742
 743       /* Erase/update the window itself ... */
 744
 745     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
 746
 747     /*
 748      * Check if this window should delay it's processing of WM_NCPAINT.
 749      * See WIN_HaveToDelayNCPAINT for a description of the mechanism
 750      */
 751     if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr, 0) )
 752         ex |= RDW_EX_DELAY_NCPAINT;
 753
 754     if (flags & RDW_UPDATENOW)
 755     {
 756         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 757             SendMessage16( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 758     }
 759     else if ((flags & RDW_ERASENOW) || (ex & RDW_EX_TOPFRAME))
 760     {
 761         UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
 762         HRGN hrgnRet;
 763
 764         hrgnRet = WIN_UpdateNCRgn(wndPtr,
 765                                   hrgn,
 766                                   UNC_REGION | UNC_CHECK |
 767                                   ((ex & RDW_EX_TOPFRAME) ? UNC_ENTIRE : 0) |
 768                                   ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
 769
 770         if( hrgnRet )
 771         {
 772             if( hrgnRet > 1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
 773             if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
 774             {
 775                 if( bIcon ) dcx |= DCX_WINDOW;
 776                 else
 777                 if( hrgnRet )
 778                     OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 779                                         wndPtr->rectWindow.top  - wndPtr->rectClient.top);
 780                 else
 781                     dcx &= ~DCX_INTERSECTRGN;
 782                 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
 783                 {
 784                     if (SendMessage16( hWnd, (bIcon) ? WM_ICONERASEBKGND
 785                                        : WM_ERASEBKGND, (WPARAM16)hDC, 0 ))
 786                     wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 787                     ReleaseDC( hWnd, hDC );
 788                 }
 789             }
 790         }
 791     }
 792
 793     if( !IsWindow(hWnd) ) return hrgn;
 794     ex &= ~RDW_EX_TOPFRAME;
 795
 796       /* ... and its child windows */
 797
 798     if( wndPtr->child && !(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE)
 799         && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
 800     {
 801         WND** list, **ppWnd;
 802
 803         if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 804         {
 805             wndPtr = NULL;
 806             for (ppWnd = list; *ppWnd; ppWnd++)
 807             {
 808                 WIN_UpdateWndPtr(&wndPtr,*ppWnd);
 809                 if (!IsWindow(wndPtr->hwndSelf)) continue;
 810                     if ( (wndPtr->dwStyle & WS_VISIBLE) &&
 811                          (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
 812                         hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
 813             }
 814             WIN_ReleaseWndPtr(wndPtr);
 815             WIN_ReleaseWinArray(list);
 816         }
 817     }
 818
 819     return hrgn;
 820 }
 821
 822 /***********************************************************************
 823  *           PAINT_RedrawWindow
 824  *
 825  */
 826 BOOL PAINT_RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 827                            HRGN hrgnUpdate, UINT flags, UINT ex )
 828 {
 829     HRGN hRgn = 0;
 830     RECT r, r2;
 831     POINT pt;
 832     WND* wndPtr;
 833
 834     if (!hwnd) hwnd = GetDesktopWindow();
 835     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 836
 837     /* check if the window or its parents are visible/not minimized */
 838
 839     if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) ) )
 840     {
 841         WIN_ReleaseWndPtr(wndPtr);
 842         return TRUE;
 843     }
 844
 845     if (TRACE_ON(win))
 846     {
 847         if( hrgnUpdate )
 848         {
 849             GetRgnBox( hrgnUpdate, &r );
 850             TRACE( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x, exflags=%04x\n",
 851                   hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags, ex);
 852         }
 853         else
 854         {
 855             if( rectUpdate )
 856                 r = *rectUpdate;
 857             else
 858                 SetRectEmpty( &r );
 859             TRACE( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x, exflags=%04x\n",
 860                         hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
 861                         r.top, r.right, r.bottom, hrgnUpdate, flags, ex );
 862         }
 863     }
 864
 865     /* prepare an update region in window coordinates */
 866
 867     if( flags & RDW_FRAME )
 868         r = wndPtr->rectWindow;
 869     else
 870         r = wndPtr->rectClient;
 871
 872     if( ex & RDW_EX_XYWINDOW )
 873     {
 874         pt.x = pt.y = 0;
 875         OffsetRect( &r, -wndPtr->rectWindow.left, -wndPtr->rectWindow.top );
 876     }
 877     else
 878     {
 879         pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 880         pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 881         OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
 882     }
 883
 884     if (flags & RDW_INVALIDATE)  /* ------------------------- Invalidate */
 885     {
 886         /* If the window doesn't have hrgnUpdate we leave hRgn zero
 887          * and put a new region straight into wndPtr->hrgnUpdate
 888          * so that RDW_UpdateRgns() won't have to do any extra work.
 889          */
 890
 891         if( hrgnUpdate )
 892         {
 893             if( wndPtr->hrgnUpdate )
 894                 hRgn = REGION_CropRgn( 0, hrgnUpdate, NULL, &pt );
 895             else
 896                 wndPtr->hrgnUpdate = REGION_CropRgn( 0, hrgnUpdate, &r, &pt );
 897         }
 898         else if( rectUpdate )
 899         {
 900             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 901             OffsetRect( &r2, pt.x, pt.y );
 902
 903 rect2i:
 904             if( wndPtr->hrgnUpdate == 0 )
 905                 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 906             else
 907                 hRgn = CreateRectRgnIndirect( &r2 );
 908         }
 909         else /* entire window or client depending on RDW_FRAME */
 910         {
 911             if( flags & RDW_FRAME )
 912             {
 913                 if( wndPtr->hrgnUpdate )
 914                     DeleteObject( wndPtr->hrgnUpdate );
 915                 wndPtr->hrgnUpdate = 1;
 916             }
 917             else
 918             {
 919                 GETCLIENTRECTW( wndPtr, r2 );
 920                 goto rect2i;
 921             }
 922         }
 923     }
 924     else if (flags & RDW_VALIDATE)  /* ------------------------- Validate */
 925     {
 926         /* In this we cannot leave with zero hRgn */
 927         if( hrgnUpdate )
 928         {
 929             hRgn = REGION_CropRgn( hRgn, hrgnUpdate,  &r, &pt );
 930             GetRgnBox( hRgn, &r2 );
 931             if( IsRectEmpty( &r2 ) ) goto END;
 932         }
 933         else if( rectUpdate )
 934         {
 935             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 936                 OffsetRect( &r2, pt.x, pt.y );
 937 rect2v:
 938             hRgn = CreateRectRgnIndirect( &r2 );
 939         }
 940         else /* entire window or client depending on RDW_FRAME */
 941         {
 942             if( flags & RDW_FRAME )
 943                 hRgn = 1;
 944             else
 945             {
 946                 GETCLIENTRECTW( wndPtr, r2 );
 947                 goto rect2v;
 948             }
 949         }
 950     }
 951
 952     /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
 953
 954     RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
 955
 956     /* Erase/update windows, from now on hRgn is a scratch region */
 957
 958     hRgn = RDW_Paint( wndPtr, (hRgn == 1) ? 0 : hRgn, flags, ex );
 959
 960 END:
 961     if( hRgn > 1 && (hRgn != hrgnUpdate) )
 962         DeleteObject(hRgn );
 963     WIN_ReleaseWndPtr(wndPtr);
 964     return TRUE;
 965 }
 966
 967
 968 /***********************************************************************
 969  *              RedrawWindow (USER32.@)
 970  */
 971 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 972                               HRGN hrgnUpdate, UINT flags )
 973 {
 974     return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
 975 }
 976
 977
 978 /***********************************************************************
 979  *              RedrawWindow (USER.290)
 980  */
 981 BOOL16 WINAPI RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
 982                               HRGN16 hrgnUpdate, UINT16 flags )
 983 {
 984     if (rectUpdate)
 985     {
 986         RECT r;
 987         CONV_RECT16TO32( rectUpdate, &r );
 988         return (BOOL16)RedrawWindow( (HWND)hwnd, &r, hrgnUpdate, flags );
 989     }
 990     return (BOOL16)PAINT_RedrawWindow( (HWND)hwnd, NULL,
 991                                        (HRGN)hrgnUpdate, flags, 0 );
 992 }
 993
 994
 995 /***********************************************************************
 996  *              UpdateWindow (USER.124)
 997  */
 998 void WINAPI UpdateWindow16( HWND16 hwnd )
 999 {
1000     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN, 0 );
1001 }
1002
1003 /***********************************************************************
1004  *              UpdateWindow (USER32.@)
1005  */
1006 void WINAPI UpdateWindow( HWND hwnd )
1007 {
1008     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN, 0 );
1009 }
1010
1011 /***********************************************************************
1012  *              InvalidateRgn (USER.126)
1013  */
1014 void WINAPI InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
1015 {
1016     PAINT_RedrawWindow((HWND)hwnd, NULL, (HRGN)hrgn,
1017                        RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1018 }
1019
1020
1021 /***********************************************************************
1022  *              InvalidateRgn (USER32.@)
1023  */
1024 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
1025 {
1026     return PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1027 }
1028
1029
1030 /***********************************************************************
1031  *              InvalidateRect (USER.125)
1032  */
1033 void WINAPI InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
1034 {
1035     RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
1036 }
1037
1038
1039 /***********************************************************************
1040  *              InvalidateRect (USER32.@)
1041  */
1042 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
1043 {
1044     return PAINT_RedrawWindow( hwnd, rect, 0,
1045                                RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
1046 }
1047
1048
1049 /***********************************************************************
1050  *              ValidateRgn (USER.128)
1051  */
1052 void WINAPI ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
1053 {
1054     PAINT_RedrawWindow( (HWND)hwnd, NULL, (HRGN)hrgn,
1055                         RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1056 }
1057
1058
1059 /***********************************************************************
1060  *              ValidateRgn (USER32.@)
1061  */
1062 void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
1063 {
1064     PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1065 }
1066
1067
1068 /***********************************************************************
1069  *              ValidateRect (USER.127)
1070  */
1071 void WINAPI ValidateRect16( HWND16 hwnd, const RECT16 *rect )
1072 {
1073     RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
1074 }
1075
1076
1077 /***********************************************************************
1078  *              ValidateRect (USER32.@)
1079  */
1080 void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
1081 {
1082     PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
1083 }
1084
1085
1086 /***********************************************************************
1087  *              GetUpdateRect (USER.190)
1088  */
1089 BOOL16 WINAPI GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
1090 {
1091     RECT r;
1092     BOOL16 ret;
1093
1094     if (!rect) return GetUpdateRect( hwnd, NULL, erase );
1095     ret = GetUpdateRect( hwnd, &r, erase );
1096     CONV_RECT32TO16( &r, rect );
1097     return ret;
1098 }
1099
1100
1101 /***********************************************************************
1102  *              GetUpdateRect (USER32.@)
1103  */
1104 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
1105 {
1106     BOOL retvalue;
1107     WND * wndPtr = WIN_FindWndPtr( hwnd );
1108     if (!wndPtr) return FALSE;
1109
1110     if (rect)
1111     {
1112         if (wndPtr->hrgnUpdate > 1)
1113         {
1114             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
1115             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
1116             {
1117                 retvalue = FALSE;
1118                 goto END;
1119             }
1120             GetRgnBox( hrgn, rect );
1121             DeleteObject( hrgn );
1122             if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
1123             {
1124                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
1125                 {
1126                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
1127                 }
1128             }
1129         }
1130         else
1131         if( wndPtr->hrgnUpdate == 1 )
1132         {
1133             GetClientRect( hwnd, rect );
1134             if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
1135         }
1136         else
1137             SetRectEmpty( rect );
1138     }
1139     retvalue = (wndPtr->hrgnUpdate >= 1);
1140 END:
1141     WIN_ReleaseWndPtr(wndPtr);
1142     return retvalue;
1143 }
1144
1145
1146 /***********************************************************************
1147  *              GetUpdateRgn (USER.237)
1148  */
1149 INT16 WINAPI GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
1150 {
1151     return GetUpdateRgn( hwnd, hrgn, erase );
1152 }
1153
1154
1155 /***********************************************************************
1156  *              GetUpdateRgn (USER32.@)
1157  */
1158 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
1159 {
1160     INT retval;
1161     WND * wndPtr = WIN_FindWndPtr( hwnd );
1162     if (!wndPtr) return ERROR;
1163
1164     if (wndPtr->hrgnUpdate == 0)
1165     {
1166         SetRectRgn( hrgn, 0, 0, 0, 0 );
1167         retval = NULLREGION;
1168         goto END;
1169     }
1170     else
1171     if (wndPtr->hrgnUpdate == 1)
1172     {
1173         SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
1174                                 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
1175         retval = SIMPLEREGION;
1176     }
1177     else
1178     {
1179         retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
1180         OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1181                          wndPtr->rectWindow.top - wndPtr->rectClient.top );
1182     }
1183     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
1184 END:
1185     WIN_ReleaseWndPtr(wndPtr);
1186     return retval;
1187 }
1188
1189
1190 /***********************************************************************
1191  *              ExcludeUpdateRgn (USER.238)
1192  */
1193 INT16 WINAPI ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
1194 {
1195     return ExcludeUpdateRgn( hdc, hwnd );
1196 }
1197
1198
1199 /***********************************************************************
1200  *              ExcludeUpdateRgn (USER32.@)
1201  */
1202 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
1203 {
1204     RECT rect;
1205     WND * wndPtr;
1206
1207     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
1208
1209     if (wndPtr->hrgnUpdate)
1210     {
1211         INT ret;
1212         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
1213                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
1214                                       wndPtr->rectWindow.right - wndPtr->rectClient.left,
1215                                       wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
1216         if( wndPtr->hrgnUpdate > 1 )
1217         {
1218             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
1219             OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
1220                             wndPtr->rectWindow.top - wndPtr->rectClient.top );
1221         }
1222
1223         /* do ugly coordinate translations in dce.c */
1224
1225         ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
1226         DeleteObject( hrgn );
1227         WIN_ReleaseWndPtr(wndPtr);
1228         return ret;
1229     }
1230     WIN_ReleaseWndPtr(wndPtr);
1231     return GetClipBox( hdc, &rect );
1232 }
1233
1234
1235
1236 /***********************************************************************
1237  *              FillRect (USER.81)
1238  * NOTE
1239  *   The Win16 variant doesn't support special color brushes like
1240  *   the Win32 one, despite the fact that Win16, as well as Win32,
1241  *   supports special background brushes for a window class.
1242  */
1243 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
1244 {
1245     HBRUSH prevBrush;
1246
1247     /* coordinates are logical so we cannot fast-check 'rect',
1248      * it will be done later in the PatBlt().
1249      */
1250
1251     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1252     PatBlt( hdc, rect->left, rect->top,
1253               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1254     SelectObject( hdc, prevBrush );
1255     return 1;
1256 }
1257
1258
1259 /***********************************************************************
1260  *              FillRect (USER32.@)
1261  */
1262 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1263 {
1264     HBRUSH prevBrush;
1265
1266     if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
1267         hbrush = GetSysColorBrush( (INT) hbrush - 1 );
1268     }
1269
1270     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1271     PatBlt( hdc, rect->left, rect->top,
1272               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1273     SelectObject( hdc, prevBrush );
1274     return 1;
1275 }
1276
1277
1278 /***********************************************************************
1279  *              InvertRect (USER.82)
1280  */
1281 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
1282 {
1283     PatBlt( hdc, rect->left, rect->top,
1284               rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
1285 }
1286
1287
1288 /***********************************************************************
1289  *              InvertRect (USER32.@)
1290  */
1291 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
1292 {
1293     return PatBlt( hdc, rect->left, rect->top,
1294                      rect->right - rect->left, rect->bottom - rect->top,
1295                      DSTINVERT );
1296 }
1297
1298
1299 /***********************************************************************
1300  *              FrameRect (USER32.@)
1301  */
1302 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1303 {
1304     HBRUSH prevBrush;
1305     RECT r = *rect;
1306
1307     if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1308     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1309
1310     PatBlt( hdc, r.left, r.top, 1,
1311               r.bottom - r.top, PATCOPY );
1312     PatBlt( hdc, r.right - 1, r.top, 1,
1313               r.bottom - r.top, PATCOPY );
1314     PatBlt( hdc, r.left, r.top,
1315               r.right - r.left, 1, PATCOPY );
1316     PatBlt( hdc, r.left, r.bottom - 1,
1317               r.right - r.left, 1, PATCOPY );
1318
1319     SelectObject( hdc, prevBrush );
1320     return TRUE;
1321 }
1322
1323
1324 /***********************************************************************
1325  *              FrameRect (USER.83)
1326  */
1327 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1328 {
1329     RECT rect;
1330     CONV_RECT16TO32( rect16, &rect );
1331     return FrameRect( hdc, &rect, hbrush );
1332 }
1333
1334
1335 /***********************************************************************
1336  *              DrawFocusRect (USER.466)
1337  */
1338 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1339 {
1340     RECT rect32;
1341     CONV_RECT16TO32( rc, &rect32 );
1342     DrawFocusRect( hdc, &rect32 );
1343 }
1344
1345
1346 /***********************************************************************
1347  *              DrawFocusRect (USER32.@)
1348  *
1349  * FIXME: PatBlt(PATINVERT) with background brush.
1350  */
1351 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1352 {
1353     HBRUSH hOldBrush;
1354     HPEN hOldPen, hNewPen;
1355     INT oldDrawMode, oldBkMode;
1356
1357     hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1358     hNewPen = CreatePen(PS_ALTERNATE, 1, GetSysColor(COLOR_WINDOWTEXT));
1359     hOldPen = SelectObject(hdc, hNewPen);
1360     oldDrawMode = SetROP2(hdc, R2_XORPEN);
1361     oldBkMode = SetBkMode(hdc, TRANSPARENT);
1362
1363     Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1364
1365     SetBkMode(hdc, oldBkMode);
1366     SetROP2(hdc, oldDrawMode);
1367     SelectObject(hdc, hOldPen);
1368     DeleteObject(hNewPen);
1369     SelectObject(hdc, hOldBrush);
1370
1371     return TRUE;
1372 }
1373
1374 /**********************************************************************
1375  *              DrawAnimatedRects (USER.448)
1376  */
1377 BOOL16 WINAPI DrawAnimatedRects16( HWND16 hwnd, INT16 idAni,
1378                                    const RECT16* lprcFrom,
1379                                    const RECT16* lprcTo )
1380 {
1381     RECT rcFrom32, rcTo32;
1382
1383     rcFrom32.left       = (INT)lprcFrom->left;
1384     rcFrom32.top        = (INT)lprcFrom->top;
1385     rcFrom32.right      = (INT)lprcFrom->right;
1386     rcFrom32.bottom     = (INT)lprcFrom->bottom;
1387
1388     rcTo32.left         = (INT)lprcTo->left;
1389     rcTo32.top          = (INT)lprcTo->top;
1390     rcTo32.right        = (INT)lprcTo->right;
1391     rcTo32.bottom       = (INT)lprcTo->bottom;
1392
1393     return DrawAnimatedRects((HWND)hwnd, (INT)idAni, &rcFrom32, &rcTo32);
1394 }
1395
1396
1397 /**********************************************************************
1398  *              DrawAnimatedRects (USER32.@)
1399  */
1400 BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
1401                                    const RECT* lprcFrom,
1402                                    const RECT* lprcTo )
1403 {
1404     FIXME_(win)("(0x%x,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1405     return TRUE;
1406 }
1407
1408
1409 /**********************************************************************
1410  *          PAINTING_DrawStateJam
1411  *
1412  * Jams in the requested type in the dc
1413  */
1414 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1415                                     DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1416                                     LPRECT rc, UINT dtflags,
1417                                     BOOL unicode, BOOL _32bit)
1418 {
1419     HDC memdc;
1420     HBITMAP hbmsave;
1421     BOOL retval;
1422     INT cx = rc->right - rc->left;
1423     INT cy = rc->bottom - rc->top;
1424
1425     switch(opcode)
1426     {
1427     case DST_TEXT:
1428     case DST_PREFIXTEXT:
1429         if(unicode)
1430             return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1431         else if(_32bit)
1432             return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1433         else
1434             return DrawTextA(hdc, MapSL(lp), (INT)wp, rc, dtflags);
1435
1436     case DST_ICON:
1437         return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1438
1439     case DST_BITMAP:
1440         memdc = CreateCompatibleDC(hdc);
1441         if(!memdc) return FALSE;
1442         hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1443         if(!hbmsave)
1444         {
1445             DeleteDC(memdc);
1446             return FALSE;
1447         }
1448         retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1449         SelectObject(memdc, hbmsave);
1450         DeleteDC(memdc);
1451         return retval;
1452
1453     case DST_COMPLEX:
1454         if(func) {
1455             BOOL bRet;
1456             /* DRAWSTATEPROC assumes that it draws at the center of coordinates  */
1457
1458             OffsetViewportOrgEx(hdc, rc->left, rc->top, NULL);
1459             if(_32bit)
1460                 bRet = func(hdc, lp, wp, cx, cy);
1461             else
1462                 bRet = (BOOL)((DRAWSTATEPROC16)func)((HDC16)hdc, (LPARAM)lp, (WPARAM16)wp, (INT16)cx, (INT16)cy);
1463             /* Restore origin */
1464             OffsetViewportOrgEx(hdc, -rc->left, -rc->top, NULL);
1465             return bRet;
1466         } else
1467             return FALSE;
1468     }
1469     return FALSE;
1470 }
1471
1472 /**********************************************************************
1473  *      PAINTING_DrawState()
1474  */
1475 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr,
1476                                    DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1477                                    INT x, INT y, INT cx, INT cy,
1478                                    UINT flags, BOOL unicode, BOOL _32bit)
1479 {
1480     HBITMAP hbm, hbmsave;
1481     HFONT hfsave;
1482     HBRUSH hbsave, hbrtmp = 0;
1483     HDC memdc;
1484     RECT rc;
1485     UINT dtflags = DT_NOCLIP;
1486     COLORREF fg, bg;
1487     UINT opcode = flags & 0xf;
1488     INT len = wp;
1489     BOOL retval, tmp;
1490
1491     if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len)    /* The string is '\0' terminated */
1492     {
1493         if(unicode)
1494             len = strlenW((LPWSTR)lp);
1495         else if(_32bit)
1496             len = strlen((LPSTR)lp);
1497         else
1498             len = strlen(MapSL(lp));
1499     }
1500
1501     /* Find out what size the image has if not given by caller */
1502     if(!cx || !cy)
1503     {
1504         SIZE s;
1505         CURSORICONINFO *ici;
1506         BITMAP bm;
1507
1508         switch(opcode)
1509         {
1510         case DST_TEXT:
1511         case DST_PREFIXTEXT:
1512             if(unicode)
1513                 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1514             else if(_32bit)
1515                 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1516             else
1517                 retval = GetTextExtentPoint32A(hdc, MapSL(lp), len, &s);
1518             if(!retval) return FALSE;
1519             break;
1520
1521         case DST_ICON:
1522             ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1523             if(!ici) return FALSE;
1524             s.cx = ici->nWidth;
1525             s.cy = ici->nHeight;
1526             GlobalUnlock16((HGLOBAL16)lp);
1527             break;
1528
1529         case DST_BITMAP:
1530             if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1531                 return FALSE;
1532             s.cx = bm.bmWidth;
1533             s.cy = bm.bmHeight;
1534             break;
1535
1536         case DST_COMPLEX: /* cx and cy must be set in this mode */
1537             return FALSE;
1538         }
1539
1540         if(!cx) cx = s.cx;
1541         if(!cy) cy = s.cy;
1542     }
1543
1544     rc.left   = x;
1545     rc.top    = y;
1546     rc.right  = x + cx;
1547     rc.bottom = y + cy;
1548
1549     if(flags & DSS_RIGHT)    /* This one is not documented in the win32.hlp file */
1550         dtflags |= DT_RIGHT;
1551     if(opcode == DST_TEXT)
1552         dtflags |= DT_NOPREFIX;
1553
1554     /* For DSS_NORMAL we just jam in the image and return */
1555     if((flags & 0x7ff0) == DSS_NORMAL)
1556     {
1557         return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode, _32bit);
1558     }
1559
1560     /* For all other states we need to convert the image to B/W in a local bitmap */
1561     /* before it is displayed */
1562     fg = SetTextColor(hdc, RGB(0, 0, 0));
1563     bg = SetBkColor(hdc, RGB(255, 255, 255));
1564     hbm = (HBITMAP)NULL; hbmsave = (HBITMAP)NULL;
1565     memdc = (HDC)NULL; hbsave = (HBRUSH)NULL;
1566     retval = FALSE; /* assume failure */
1567
1568     /* From here on we must use "goto cleanup" when something goes wrong */
1569     hbm     = CreateBitmap(cx, cy, 1, 1, NULL);
1570     if(!hbm) goto cleanup;
1571     memdc   = CreateCompatibleDC(hdc);
1572     if(!memdc) goto cleanup;
1573     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1574     if(!hbmsave) goto cleanup;
1575     rc.left = rc.top = 0;
1576     rc.right = cx;
1577     rc.bottom = cy;
1578     if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1579     SetBkColor(memdc, RGB(255, 255, 255));
1580     SetTextColor(memdc, RGB(0, 0, 0));
1581     hfsave  = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1582
1583     /* DST_COMPLEX may draw text as well,
1584      * so we must be sure that correct font is selected
1585      */
1586     if(!hfsave && (opcode <= DST_PREFIXTEXT)) goto cleanup;
1587     tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode, _32bit);
1588     if(hfsave) SelectObject(memdc, hfsave);
1589     if(!tmp) goto cleanup;
1590
1591     /* This state cause the image to be dithered */
1592     if(flags & DSS_UNION)
1593     {
1594         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1595         if(!hbsave) goto cleanup;
1596         tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1597         SelectObject(memdc, hbsave);
1598         if(!tmp) goto cleanup;
1599     }
1600
1601     if (flags & DSS_DISABLED)
1602        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
1603     else if (flags & DSS_DEFAULT)
1604        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1605
1606     /* Draw light or dark shadow */
1607     if (flags & (DSS_DISABLED|DSS_DEFAULT))
1608     {
1609        if(!hbrtmp) goto cleanup;
1610        hbsave = (HBRUSH)SelectObject(hdc, hbrtmp);
1611        if(!hbsave) goto cleanup;
1612        if(!BitBlt(hdc, x+1, y+1, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1613        SelectObject(hdc, hbsave);
1614        DeleteObject(hbrtmp);
1615        hbrtmp = 0;
1616     }
1617
1618     if (flags & DSS_DISABLED)
1619     {
1620        hbr = hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1621        if(!hbrtmp) goto cleanup;
1622     }
1623     else if (!hbr)
1624     {
1625        hbr = (HBRUSH)GetStockObject(BLACK_BRUSH);
1626     }
1627
1628     hbsave = (HBRUSH)SelectObject(hdc, hbr);
1629
1630     if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1631
1632     retval = TRUE; /* We succeeded */
1633
1634 cleanup:
1635     SetTextColor(hdc, fg);
1636     SetBkColor(hdc, bg);
1637
1638     if(hbsave)  SelectObject(hdc, hbsave);
1639     if(hbmsave) SelectObject(memdc, hbmsave);
1640     if(hbrtmp)  DeleteObject(hbrtmp);
1641     if(hbm)     DeleteObject(hbm);
1642     if(memdc)   DeleteDC(memdc);
1643
1644     return retval;
1645 }
1646
1647 /**********************************************************************
1648  *              DrawStateA (USER32.@)
1649  */
1650 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1651                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1652                    INT x, INT y, INT cx, INT cy, UINT flags)
1653 {
1654     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE, TRUE);
1655 }
1656
1657 /**********************************************************************
1658  *              DrawStateW (USER32.@)
1659  */
1660 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1661                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1662                    INT x, INT y, INT cx, INT cy, UINT flags)
1663 {
1664     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE, TRUE);
1665 }
1666
1667 /**********************************************************************
1668  *              DrawState (USER.449)
1669  */
1670 BOOL16 WINAPI DrawState16(HDC16 hdc, HBRUSH16 hbr,
1671                    DRAWSTATEPROC16 func, LPARAM ldata, WPARAM16 wdata,
1672                    INT16 x, INT16 y, INT16 cx, INT16 cy, UINT16 flags)
1673 {
1674     return PAINTING_DrawState(hdc, hbr, (DRAWSTATEPROC)func, ldata, wdata, x, y, cx, cy, flags, FALSE, FALSE);
1675 }
1676
1677
1678 /***********************************************************************
1679  *              SelectPalette (USER.282)
1680  */
1681 HPALETTE16 WINAPI SelectPalette16( HDC16 hDC, HPALETTE16 hPal,
1682                                    BOOL16 bForceBackground )
1683 {
1684     WORD wBkgPalette = 1;
1685
1686     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
1687     {
1688         HWND hwnd = WindowFromDC( hDC );
1689         if (hwnd)
1690         {
1691             HWND hForeground = GetForegroundWindow();
1692             /* set primary palette if it's related to current active */
1693             if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0;
1694         }
1695     }
1696     return GDISelectPalette16( hDC, hPal, wBkgPalette);
1697 }
1698
1699
1700 /***********************************************************************
1701  *              RealizePalette (USER.283)
1702  */
1703 UINT16 WINAPI RealizePalette16( HDC16 hDC )
1704 {
1705     UINT16 realized = GDIRealizePalette16( hDC );
1706
1707     /* do not send anything if no colors were changed */
1708     if (realized && IsDCCurrentPalette16( hDC ))
1709     {
1710         /* send palette change notification */
1711         HWND hWnd = WindowFromDC( hDC );
1712         if (hWnd) SendMessageA( HWND_BROADCAST, WM_PALETTECHANGED, hWnd, 0L);
1713     }
1714     return realized;
1715 }
1716
1717
1718 /***********************************************************************
1719  *              UserRealizePalette (USER32.@)
1720  */
1721 UINT WINAPI UserRealizePalette( HDC hDC )
1722 {
1723     return RealizePalette16( hDC );
1724 }