windows/painting.c

   1 /*
   2  * Window painting functions
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *
   6  * FIXME: Do not repaint full nonclient area all the time. Instead, compute
   7  *        intersection with hrgnUpdate (which should be moved from client to
   8  *        window coords as well, lookup 'the pain' comment in the winpos.c).
   9  */
  10
  11 #include "win.h"
  12 #include "queue.h"
  13 #include "gdi.h"
  14 #include "dce.h"
  15 #include "heap.h"
  16 #include "debug.h"
  17 #include "wine/winuser16.h"
  18
  19   /* Last CTLCOLOR id */
  20 #define CTLCOLOR_MAX   CTLCOLOR_STATIC
  21
  22 /***********************************************************************
  23  *           WIN_UpdateNCArea
  24  *
  25  */
  26 void WIN_UpdateNCArea(WND* wnd, BOOL bUpdate)
  27 {
  28     POINT16 pt = {0, 0};
  29     HRGN hClip = 1;
  30
  31     TRACE(nonclient,"hwnd %04x, hrgnUpdate %04x\n",
  32                       wnd->hwndSelf, wnd->hrgnUpdate );
  33
  34     /* desktop window doesn't have nonclient area */
  35     if(wnd == WIN_GetDesktop())
  36     {
  37         wnd->flags &= ~WIN_NEEDS_NCPAINT;
  38         return;
  39     }
  40
  41     if( wnd->hrgnUpdate > 1 )
  42     {
  43         ClientToScreen16(wnd->hwndSelf, &pt);
  44
  45         hClip = CreateRectRgn( 0, 0, 0, 0 );
  46         if (!CombineRgn( hClip, wnd->hrgnUpdate, 0, RGN_COPY ))
  47         {
  48             DeleteObject(hClip);
  49             hClip = 1;
  50         }
  51         else
  52             OffsetRgn( hClip, pt.x, pt.y );
  53
  54         if (bUpdate)
  55         {
  56             /* exclude non-client area from update region */
  57             HRGN hrgn = CreateRectRgn( 0, 0,
  58                                  wnd->rectClient.right - wnd->rectClient.left,
  59                                  wnd->rectClient.bottom - wnd->rectClient.top);
  60
  61             if (hrgn && (CombineRgn( wnd->hrgnUpdate, wnd->hrgnUpdate,
  62                                        hrgn, RGN_AND) == NULLREGION))
  63             {
  64                 DeleteObject( wnd->hrgnUpdate );
  65                 wnd->hrgnUpdate = 1;
  66             }
  67
  68             DeleteObject( hrgn );
  69         }
  70     }
  71
  72     wnd->flags &= ~WIN_NEEDS_NCPAINT;
  73
  74     if ((wnd->hwndSelf == GetActiveWindow()) &&
  75         !(wnd->flags & WIN_NCACTIVATED))
  76     {
  77         wnd->flags |= WIN_NCACTIVATED;
  78         if( hClip > 1) DeleteObject( hClip );
  79         hClip = 1;
  80     }
  81
  82     if (hClip) SendMessage16( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
  83
  84     if (hClip > 1) DeleteObject( hClip );
  85 }
  86
  87
  88 /***********************************************************************
  89  *           BeginPaint16    (USER.39)
  90  */
  91 HDC16 WINAPI BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
  92 {
  93     BOOL bIcon;
  94     HRGN hrgnUpdate;
  95     WND *wndPtr = WIN_FindWndPtr( hwnd );
  96     if (!wndPtr) return 0;
  97
  98     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
  99
 100     wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 101
 102     if (wndPtr->flags & WIN_NEEDS_NCPAINT) WIN_UpdateNCArea( wndPtr, TRUE );
 103
 104     if (((hrgnUpdate = wndPtr->hrgnUpdate) != 0) ||
 105         (wndPtr->flags & WIN_INTERNAL_PAINT))
 106         QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 107
 108     wndPtr->hrgnUpdate = 0;
 109     wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 110
 111     HideCaret( hwnd );
 112
 113     TRACE(win,"hrgnUpdate = %04x, \n", hrgnUpdate);
 114
 115     /* When bIcon is TRUE hrgnUpdate is automatically in window coordinates
 116      * (because rectClient == rectWindow for WS_MINIMIZE windows).
 117      */
 118
 119     if (wndPtr->class->style & CS_PARENTDC)
 120     {
 121         /* Don't clip the output to the update region for CS_PARENTDC window */
 122         if(hrgnUpdate > 1)
 123             DeleteObject(hrgnUpdate);
 124         lps->hdc = GetDCEx16( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
 125                               (bIcon ? DCX_WINDOW : 0) );
 126     }
 127     else
 128     {
 129         lps->hdc = GetDCEx16(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
 130                              DCX_WINDOWPAINT | DCX_USESTYLE |
 131                              (bIcon ? DCX_WINDOW : 0) );
 132     }
 133
 134     TRACE(win,"hdc = %04x\n", lps->hdc);
 135
 136     if (!lps->hdc)
 137     {
 138         WARN(win, "GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
 139         return 0;
 140     }
 141
 142     GetClipBox16( lps->hdc, &lps->rcPaint );
 143
 144 TRACE(win,"box = (%i,%i - %i,%i)\n", lps->rcPaint.left, lps->rcPaint.top,
 145                     lps->rcPaint.right, lps->rcPaint.bottom );
 146
 147     if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 148     {
 149         wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 150         lps->fErase = !SendMessage16(hwnd, (bIcon) ? WM_ICONERASEBKGND
 151                                                    : WM_ERASEBKGND,
 152                                      (WPARAM16)lps->hdc, 0 );
 153     }
 154     else lps->fErase = TRUE;
 155
 156     return lps->hdc;
 157 }
 158
 159
 160 /***********************************************************************
 161  *           BeginPaint32    (USER32.10)
 162  */
 163 HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
 164 {
 165     PAINTSTRUCT16 ps;
 166
 167     BeginPaint16( hwnd, &ps );
 168     lps->hdc            = (HDC)ps.hdc;
 169     lps->fErase         = ps.fErase;
 170     lps->rcPaint.top    = ps.rcPaint.top;
 171     lps->rcPaint.left   = ps.rcPaint.left;
 172     lps->rcPaint.right  = ps.rcPaint.right;
 173     lps->rcPaint.bottom = ps.rcPaint.bottom;
 174     lps->fRestore       = ps.fRestore;
 175     lps->fIncUpdate     = ps.fIncUpdate;
 176     return lps->hdc;
 177 }
 178
 179
 180 /***********************************************************************
 181  *           EndPaint16    (USER.40)
 182  */
 183 BOOL16 WINAPI EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
 184 {
 185     ReleaseDC16( hwnd, lps->hdc );
 186     ShowCaret( hwnd );
 187     return TRUE;
 188 }
 189
 190
 191 /***********************************************************************
 192  *           EndPaint32    (USER32.176)
 193  */
 194 BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
 195 {
 196     ReleaseDC( hwnd, lps->hdc );
 197     ShowCaret( hwnd );
 198     return TRUE;
 199 }
 200
 201
 202 /***********************************************************************
 203  *           FillWindow    (USER.324)
 204  */
 205 void WINAPI FillWindow16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
 206 {
 207     RECT16 rect;
 208     GetClientRect16( hwnd, &rect );
 209     DPtoLP16( hdc, (LPPOINT16)&rect, 2 );
 210     PaintRect16( hwndParent, hwnd, hdc, hbrush, &rect );
 211 }
 212
 213
 214 /***********************************************************************
 215  *           PAINT_GetControlBrush
 216  */
 217 static HBRUSH16 PAINT_GetControlBrush( HWND hParent, HWND hWnd, HDC16 hDC, UINT16 ctlType )
 218 {
 219     HBRUSH16 bkgBrush = (HBRUSH16)SendMessageA( hParent, WM_CTLCOLORMSGBOX + ctlType,
 220                                                              (WPARAM)hDC, (LPARAM)hWnd );
 221     if( !IsGDIObject16(bkgBrush) )
 222         bkgBrush = DEFWND_ControlColor( hDC, ctlType );
 223     return bkgBrush;
 224 }
 225
 226
 227 /***********************************************************************
 228  *           PaintRect    (USER.325)
 229  */
 230 void WINAPI PaintRect16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
 231                        HBRUSH16 hbrush, const RECT16 *rect)
 232 {
 233     if( hbrush <= CTLCOLOR_MAX )
 234     {
 235         if( hwndParent )
 236             hbrush = PAINT_GetControlBrush( hwndParent, hwnd, hdc, (UINT16)hbrush );
 237         else
 238             return;
 239     }
 240     if( hbrush )
 241         FillRect16( hdc, rect, hbrush );
 242 }
 243
 244
 245 /***********************************************************************
 246  *           GetControlBrush    (USER.326)
 247  */
 248 HBRUSH16 WINAPI GetControlBrush16( HWND16 hwnd, HDC16 hdc, UINT16 ctlType )
 249 {
 250     WND* wndPtr = WIN_FindWndPtr( hwnd );
 251
 252     if((ctlType <= CTLCOLOR_MAX) && wndPtr )
 253     {
 254         WND* parent;
 255         if( wndPtr->dwStyle & WS_POPUP ) parent = wndPtr->owner;
 256         else parent = wndPtr->parent;
 257         if( !parent ) parent = wndPtr;
 258         return (HBRUSH16)PAINT_GetControlBrush( parent->hwndSelf, hwnd, hdc, ctlType );
 259     }
 260     return (HBRUSH16)0;
 261 }
 262
 263
 264 /***********************************************************************
 265  *           PAINT_RedrawWindow
 266  *
 267  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 268  * SendMessage() calls. This is a comment inside DefWindowProc() source
 269  * from 16-bit SDK:
 270  *
 271  *   This message avoids lots of inter-app message traffic
 272  *   by switching to the other task and continuing the
 273  *   recursion there.
 274  *
 275  * wParam         = flags
 276  * LOWORD(lParam) = hrgnClip
 277  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 278  *
 279  * All in all, a prime candidate for a rewrite.
 280  */
 281 BOOL PAINT_RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 282                            HRGN hrgnUpdate, UINT flags, UINT control )
 283 {
 284     BOOL bIcon;
 285     HRGN hrgn;
 286     RECT rectClient;
 287     WND* wndPtr;
 288     WND **list, **ppWnd;
 289
 290     if (!hwnd) hwnd = GetDesktopWindow();
 291     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 292     if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) ) )
 293         return TRUE;  /* No redraw needed */
 294
 295     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
 296     if (rectUpdate)
 297     {
 298         TRACE(win, "%04x %d,%d-%d,%d %04x flags=%04x\n",
 299                     hwnd, rectUpdate->left, rectUpdate->top,
 300                     rectUpdate->right, rectUpdate->bottom, hrgnUpdate, flags );
 301     }
 302     else
 303     {
 304         TRACE(win, "%04x NULL %04x flags=%04x\n", hwnd, hrgnUpdate, flags);
 305     }
 306
 307     GetClientRect( hwnd, &rectClient );
 308
 309     if (flags & RDW_INVALIDATE)  /* Invalidate */
 310     {
 311         int rgnNotEmpty = COMPLEXREGION;
 312
 313         if (wndPtr->hrgnUpdate > 1)  /* Is there already an update region? */
 314         {
 315             if ((hrgn = hrgnUpdate) == 0)
 316                 hrgn = CreateRectRgnIndirect( rectUpdate ? rectUpdate :
 317                                                 &rectClient );
 318             rgnNotEmpty = CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
 319                                         hrgn, RGN_OR );
 320             if (!hrgnUpdate) DeleteObject( hrgn );
 321         }
 322         else  /* No update region yet */
 323         {
 324             if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 325                 QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 326             if (hrgnUpdate)
 327             {
 328                 wndPtr->hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
 329                 rgnNotEmpty = CombineRgn( wndPtr->hrgnUpdate, hrgnUpdate,
 330                                             0, RGN_COPY );
 331             }
 332             else wndPtr->hrgnUpdate = CreateRectRgnIndirect( rectUpdate ?
 333                                                     rectUpdate : &rectClient );
 334         }
 335
 336         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 337
 338         /* restrict update region to client area (FIXME: correct?) */
 339         if (wndPtr->hrgnUpdate)
 340         {
 341             HRGN clientRgn = CreateRectRgnIndirect( &rectClient );
 342             rgnNotEmpty = CombineRgn( wndPtr->hrgnUpdate, clientRgn,
 343                                         wndPtr->hrgnUpdate, RGN_AND );
 344             DeleteObject( clientRgn );
 345         }
 346
 347         /* check for bogus update region */
 348         if ( rgnNotEmpty == NULLREGION )
 349            {
 350              wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 351              DeleteObject( wndPtr->hrgnUpdate );
 352              wndPtr->hrgnUpdate=0;
 353              if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 354                    QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 355            }
 356         else
 357              if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 358         flags |= RDW_FRAME;  /* Force children frame invalidation */
 359     }
 360     else if (flags & RDW_VALIDATE)  /* Validate */
 361     {
 362           /* We need an update region in order to validate anything */
 363         if (wndPtr->hrgnUpdate > 1)
 364         {
 365             if (!hrgnUpdate && !rectUpdate)
 366             {
 367                   /* Special case: validate everything */
 368                 DeleteObject( wndPtr->hrgnUpdate );
 369                 wndPtr->hrgnUpdate = 0;
 370             }
 371             else
 372             {
 373                 if ((hrgn = hrgnUpdate) == 0)
 374                     hrgn = CreateRectRgnIndirect( rectUpdate );
 375                 if (CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
 376                                   hrgn, RGN_DIFF ) == NULLREGION)
 377                 {
 378                     DeleteObject( wndPtr->hrgnUpdate );
 379                     wndPtr->hrgnUpdate = 0;
 380                 }
 381                 if (!hrgnUpdate) DeleteObject( hrgn );
 382             }
 383             if (!wndPtr->hrgnUpdate)  /* No more update region */
 384                 if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 385                     QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 386         }
 387         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 388         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 389     }
 390
 391       /* Set/clear internal paint flag */
 392
 393     if (flags & RDW_INTERNALPAINT)
 394     {
 395         if ( wndPtr->hrgnUpdate <= 1 && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 396             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 397         wndPtr->flags |= WIN_INTERNAL_PAINT;
 398     }
 399     else if (flags & RDW_NOINTERNALPAINT)
 400     {
 401         if ( wndPtr->hrgnUpdate <= 1 && (wndPtr->flags & WIN_INTERNAL_PAINT))
 402             QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 403         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 404     }
 405
 406       /* Erase/update window */
 407
 408     if (flags & RDW_UPDATENOW)
 409     {
 410         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 411             SendMessage16( hwnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 412     }
 413     else if (flags & RDW_ERASENOW)
 414     {
 415         if (wndPtr->flags & WIN_NEEDS_NCPAINT)
 416             WIN_UpdateNCArea( wndPtr, FALSE);
 417
 418         if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 419         {
 420             HDC hdc = GetDCEx( hwnd, wndPtr->hrgnUpdate,
 421                                    DCX_INTERSECTRGN | DCX_USESTYLE |
 422                                    DCX_KEEPCLIPRGN | DCX_WINDOWPAINT |
 423                                    (bIcon ? DCX_WINDOW : 0) );
 424             if (hdc)
 425             {
 426                if (SendMessage16( hwnd, (bIcon) ? WM_ICONERASEBKGND
 427                                                 : WM_ERASEBKGND,
 428                                   (WPARAM16)hdc, 0 ))
 429                   wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 430                ReleaseDC( hwnd, hdc );
 431             }
 432         }
 433     }
 434
 435       /* Recursively process children */
 436
 437     if (!(flags & RDW_NOCHILDREN) &&
 438         ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) &&
 439         !(wndPtr->dwStyle & WS_MINIMIZE) )
 440     {
 441         if ( hrgnUpdate || rectUpdate )
 442         {
 443            if (!(hrgn = CreateRectRgn( 0, 0, 0, 0 ))) return TRUE;
 444            if( !hrgnUpdate )
 445            {
 446                 control |= (RDW_C_DELETEHRGN | RDW_C_USEHRGN);
 447                 if( !(hrgnUpdate = CreateRectRgnIndirect( rectUpdate )) )
 448                 {
 449                     DeleteObject( hrgn );
 450                     return TRUE;
 451                 }
 452            }
 453            if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 454            {
 455                 for (ppWnd = list; *ppWnd; ppWnd++)
 456                 {
 457                     wndPtr = *ppWnd;
 458                     if (!IsWindow(wndPtr->hwndSelf)) continue;
 459                     if (wndPtr->dwStyle & WS_VISIBLE)
 460                     {
 461                         SetRectRgn( hrgn,
 462                                 wndPtr->rectWindow.left, wndPtr->rectWindow.top,
 463                                 wndPtr->rectWindow.right, wndPtr->rectWindow.bottom );
 464                         if (CombineRgn( hrgn, hrgn, hrgnUpdate, RGN_AND ))
 465                         {
 466                             OffsetRgn( hrgn, -wndPtr->rectClient.left,
 467                                         -wndPtr->rectClient.top );
 468                             PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, hrgn, flags,
 469                                          RDW_C_USEHRGN );
 470                         }
 471                     }
 472                 }
 473                 HeapFree( SystemHeap, 0, list );
 474            }
 475            DeleteObject( hrgn );
 476            if (control & RDW_C_DELETEHRGN) DeleteObject( hrgnUpdate );
 477         }
 478         else
 479         {
 480             if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 481             {
 482                 for (ppWnd = list; *ppWnd; ppWnd++)
 483                 {
 484                     wndPtr = *ppWnd;
 485                     if (IsWindow( wndPtr->hwndSelf ))
 486                         PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, 0, flags, 0 );
 487                 }
 488                 HeapFree( SystemHeap, 0, list );
 489             }
 490         }
 491
 492     }
 493     return TRUE;
 494 }
 495
 496
 497 /***********************************************************************
 498  *           RedrawWindow32    (USER32.426)
 499  */
 500 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 501                               HRGN hrgnUpdate, UINT flags )
 502 {
 503     return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
 504 }
 505
 506
 507 /***********************************************************************
 508  *           RedrawWindow16    (USER.290)
 509  */
 510 BOOL16 WINAPI RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
 511                               HRGN16 hrgnUpdate, UINT16 flags )
 512 {
 513     if (rectUpdate)
 514     {
 515         RECT r;
 516         CONV_RECT16TO32( rectUpdate, &r );
 517         return (BOOL16)RedrawWindow( (HWND)hwnd, &r, hrgnUpdate, flags );
 518     }
 519     return (BOOL16)PAINT_RedrawWindow( (HWND)hwnd, NULL,
 520                                        (HRGN)hrgnUpdate, flags, 0 );
 521 }
 522
 523
 524 /***********************************************************************
 525  *           UpdateWindow16   (USER.124)
 526  */
 527 void WINAPI UpdateWindow16( HWND16 hwnd )
 528 {
 529     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
 530 }
 531
 532 /***********************************************************************
 533  *           UpdateWindow32   (USER32.567)
 534  */
 535 void WINAPI UpdateWindow( HWND hwnd )
 536 {
 537     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
 538 }
 539
 540 /***********************************************************************
 541  *           InvalidateRgn16   (USER.126)
 542  */
 543 void WINAPI InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
 544 {
 545     PAINT_RedrawWindow((HWND)hwnd, NULL, (HRGN)hrgn,
 546                        RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 547 }
 548
 549
 550 /***********************************************************************
 551  *           InvalidateRgn32   (USER32.329)
 552  */
 553 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 554 {
 555     return PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 556 }
 557
 558
 559 /***********************************************************************
 560  *           InvalidateRect16   (USER.125)
 561  */
 562 void WINAPI InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
 563 {
 564     RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 565 }
 566
 567
 568 /***********************************************************************
 569  *           InvalidateRect32   (USER32.328)
 570  */
 571 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
 572 {
 573     return PAINT_RedrawWindow( hwnd, rect, 0,
 574                                RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 575 }
 576
 577
 578 /***********************************************************************
 579  *           ValidateRgn16   (USER.128)
 580  */
 581 void WINAPI ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
 582 {
 583     PAINT_RedrawWindow( (HWND)hwnd, NULL, (HRGN)hrgn,
 584                         RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 585 }
 586
 587
 588 /***********************************************************************
 589  *           ValidateRgn32   (USER32.572)
 590  */
 591 void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
 592 {
 593     PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 594 }
 595
 596
 597 /***********************************************************************
 598  *           ValidateRect16   (USER.127)
 599  */
 600 void WINAPI ValidateRect16( HWND16 hwnd, const RECT16 *rect )
 601 {
 602     RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
 603 }
 604
 605
 606 /***********************************************************************
 607  *           ValidateRect32   (USER32.571)
 608  */
 609 void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
 610 {
 611     PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 612 }
 613
 614
 615 /***********************************************************************
 616  *           GetUpdateRect16   (USER.190)
 617  */
 618 BOOL16 WINAPI GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
 619 {
 620     RECT r;
 621     BOOL16 ret;
 622
 623     if (!rect) return GetUpdateRect( hwnd, NULL, erase );
 624     ret = GetUpdateRect( hwnd, &r, erase );
 625     CONV_RECT32TO16( &r, rect );
 626     return ret;
 627 }
 628
 629
 630 /***********************************************************************
 631  *           GetUpdateRect32   (USER32.297)
 632  */
 633 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
 634 {
 635     WND * wndPtr = WIN_FindWndPtr( hwnd );
 636     if (!wndPtr) return FALSE;
 637
 638     if (rect)
 639     {
 640         if (wndPtr->hrgnUpdate > 1)
 641         {
 642             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
 643             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR) return FALSE;
 644             GetRgnBox( hrgn, rect );
 645             DeleteObject( hrgn );
 646             if (wndPtr->class->style & CS_OWNDC)
 647             {
 648                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
 649                 {
 650                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
 651                 }
 652             }
 653         }
 654         else SetRectEmpty( rect );
 655     }
 656     return (wndPtr->hrgnUpdate > 1);
 657 }
 658
 659
 660 /***********************************************************************
 661  *           GetUpdateRgn16   (USER.237)
 662  */
 663 INT16 WINAPI GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
 664 {
 665     return GetUpdateRgn( hwnd, hrgn, erase );
 666 }
 667
 668
 669 /***********************************************************************
 670  *           GetUpdateRgn32   (USER32.298)
 671  */
 672 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 673 {
 674     INT retval;
 675     WND * wndPtr = WIN_FindWndPtr( hwnd );
 676     if (!wndPtr) return ERROR;
 677
 678     if (wndPtr->hrgnUpdate <= 1)
 679     {
 680         SetRectRgn( hrgn, 0, 0, 0, 0 );
 681         return NULLREGION;
 682     }
 683     retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
 684     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
 685     return retval;
 686 }
 687
 688
 689 /***********************************************************************
 690  *           ExcludeUpdateRgn16   (USER.238)
 691  */
 692 INT16 WINAPI ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
 693 {
 694     return ExcludeUpdateRgn( hdc, hwnd );
 695 }
 696
 697
 698 /***********************************************************************
 699  *           ExcludeUpdateRgn32   (USER32.195)
 700  */
 701 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
 702 {
 703     RECT rect;
 704     WND * wndPtr;
 705
 706     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
 707
 708     if (wndPtr->hrgnUpdate)
 709     {
 710         INT ret;
 711         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
 712                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
 713                                       wndPtr->rectClient.right - wndPtr->rectClient.left,
 714                                       wndPtr->rectClient.bottom - wndPtr->rectClient.top);
 715         if( wndPtr->hrgnUpdate > 1 )
 716             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
 717
 718         /* do ugly coordinate translations in dce.c */
 719
 720         ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
 721         DeleteObject( hrgn );
 722         return ret;
 723     }
 724     return GetClipBox( hdc, &rect );
 725 }
 726
 727