git.oblomov.eu Git - wine/blob - 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 <stdio.h>
  12 #include <X11/Xlib.h>
  13
  14 #include "win.h"
  15 #include "queue.h"
  16 #include "gdi.h"
  17 #include "dce.h"
  18 #include "heap.h"
  19 #include "stddebug.h"
  20 /* #define DEBUG_WIN */
  21 #include "debug.h"
  22
  23   /* Last CTLCOLOR id */
  24 #define CTLCOLOR_MAX   CTLCOLOR_STATIC
  25
  26 /***********************************************************************
  27  *           WIN_UpdateNCArea
  28  *
  29  */
  30 void WIN_UpdateNCArea(WND* wnd, BOOL32 bUpdate)
  31 {
  32     POINT16 pt = {0, 0};
  33     HRGN32 hClip = 1;
  34
  35     dprintf_nonclient(stddeb,"NCUpdate: hwnd %04x, hrgnUpdate %04x\n",
  36                       wnd->hwndSelf, wnd->hrgnUpdate );
  37
  38     /* desktop window doesn't have nonclient area */
  39     if(wnd == WIN_GetDesktop())
  40     {
  41         wnd->flags &= ~WIN_NEEDS_NCPAINT;
  42         return;
  43     }
  44
  45     if( wnd->hrgnUpdate > 1 )
  46     {
  47         ClientToScreen16(wnd->hwndSelf, &pt);
  48
  49         hClip = CreateRectRgn32( 0, 0, 0, 0 );
  50         if (!CombineRgn32( hClip, wnd->hrgnUpdate, 0, RGN_COPY ))
  51         {
  52             DeleteObject32(hClip);
  53             hClip = 1;
  54         }
  55         else
  56             OffsetRgn32( hClip, pt.x, pt.y );
  57
  58         if (bUpdate)
  59         {
  60             /* exclude non-client area from update region */
  61             HRGN32 hrgn = CreateRectRgn32( 0, 0,
  62                                  wnd->rectClient.right - wnd->rectClient.left,
  63                                  wnd->rectClient.bottom - wnd->rectClient.top);
  64
  65             if (hrgn && (CombineRgn32( wnd->hrgnUpdate, wnd->hrgnUpdate,
  66                                        hrgn, RGN_AND) == NULLREGION))
  67             {
  68                 DeleteObject32( wnd->hrgnUpdate );
  69                 wnd->hrgnUpdate = 1;
  70             }
  71
  72             DeleteObject32( hrgn );
  73         }
  74     }
  75
  76     wnd->flags &= ~WIN_NEEDS_NCPAINT;
  77
  78     if ((wnd->hwndSelf == GetActiveWindow32()) &&
  79         !(wnd->flags & WIN_NCACTIVATED))
  80     {
  81         wnd->flags |= WIN_NCACTIVATED;
  82         if( hClip > 1) DeleteObject32( hClip );
  83         hClip = 1;
  84     }
  85
  86     if (hClip) SendMessage16( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
  87
  88     if (hClip > 1) DeleteObject32( hClip );
  89 }
  90
  91
  92 /***********************************************************************
  93  *           BeginPaint16    (USER.39)
  94  */
  95 HDC16 BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
  96 {
  97     BOOL32 bIcon;
  98     HRGN32 hrgnUpdate;
  99     WND *wndPtr = WIN_FindWndPtr( hwnd );
 100     if (!wndPtr) return 0;
 101
 102     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
 103
 104     wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 105
 106     if (wndPtr->flags & WIN_NEEDS_NCPAINT) WIN_UpdateNCArea( wndPtr, TRUE );
 107
 108     if (((hrgnUpdate = wndPtr->hrgnUpdate) != 0) ||
 109         (wndPtr->flags & WIN_INTERNAL_PAINT))
 110         QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 111
 112     wndPtr->hrgnUpdate = 0;
 113     wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 114
 115     HideCaret32( hwnd );
 116
 117     dprintf_win(stddeb,"hrgnUpdate = %04x, ", hrgnUpdate);
 118
 119     /* When bIcon is TRUE hrgnUpdate is automatically in window coordinates
 120      * (because rectClient == rectWindow for WS_MINIMIZE windows).
 121      */
 122
 123     if (wndPtr->class->style & CS_PARENTDC)
 124         /* Don't clip the output to the update region for CS_PARENTDC window */
 125         lps->hdc = GetDCEx16( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
 126                               (bIcon ? DCX_WINDOW : 0) );
 127     else
 128         lps->hdc = GetDCEx16(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
 129                              DCX_WINDOWPAINT | DCX_USESTYLE |
 130                              (bIcon ? DCX_WINDOW : 0) );
 131
 132     dprintf_win(stddeb,"hdc = %04x\n", lps->hdc);
 133
 134     if (!lps->hdc)
 135     {
 136         fprintf(stderr, "GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
 137         return 0;
 138     }
 139
 140     GetRgnBox16( InquireVisRgn(lps->hdc), &lps->rcPaint );
 141     DPtoLP16( lps->hdc, (LPPOINT16)&lps->rcPaint, 2 );
 142
 143     if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 144     {
 145         wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 146         lps->fErase = !SendMessage16(hwnd, (bIcon) ? WM_ICONERASEBKGND
 147                                                    : WM_ERASEBKGND,
 148                                      (WPARAM16)lps->hdc, 0 );
 149     }
 150     else lps->fErase = TRUE;
 151
 152     return lps->hdc;
 153 }
 154
 155
 156 /***********************************************************************
 157  *           BeginPaint32    (USER32.9)
 158  */
 159 HDC32 BeginPaint32( HWND32 hwnd, PAINTSTRUCT32 *lps )
 160 {
 161     PAINTSTRUCT16 ps;
 162
 163     BeginPaint16( hwnd, &ps );
 164     lps->hdc            = (HDC32)ps.hdc;
 165     lps->fErase         = ps.fErase;
 166     lps->rcPaint.top    = ps.rcPaint.top;
 167     lps->rcPaint.left   = ps.rcPaint.left;
 168     lps->rcPaint.right  = ps.rcPaint.right;
 169     lps->rcPaint.bottom = ps.rcPaint.bottom;
 170     lps->fRestore       = ps.fRestore;
 171     lps->fIncUpdate     = ps.fIncUpdate;
 172     return lps->hdc;
 173 }
 174
 175
 176 /***********************************************************************
 177  *           EndPaint16    (USER.40)
 178  */
 179 BOOL16 EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
 180 {
 181     ReleaseDC16( hwnd, lps->hdc );
 182     ShowCaret32( hwnd );
 183     return TRUE;
 184 }
 185
 186
 187 /***********************************************************************
 188  *           EndPaint32    (USER32.175)
 189  */
 190 BOOL32 EndPaint32( HWND32 hwnd, const PAINTSTRUCT32 *lps )
 191 {
 192     ReleaseDC32( hwnd, lps->hdc );
 193     ShowCaret32( hwnd );
 194     return TRUE;
 195 }
 196
 197
 198 /***********************************************************************
 199  *           FillWindow    (USER.324)
 200  */
 201 void FillWindow( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
 202 {
 203     RECT16 rect;
 204     GetClientRect16( hwnd, &rect );
 205     DPtoLP16( hdc, (LPPOINT16)&rect, 2 );
 206     PaintRect( hwndParent, hwnd, hdc, hbrush, &rect );
 207 }
 208
 209
 210 /***********************************************************************
 211  *           PaintRect    (USER.325)
 212  */
 213 void PaintRect( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
 214                 HBRUSH16 hbrush, const RECT16 *rect)
 215 {
 216       /* Send WM_CTLCOLOR message if needed */
 217
 218     if ((UINT32)hbrush <= CTLCOLOR_MAX)
 219     {
 220         if (!hwndParent) return;
 221         hbrush = (HBRUSH16)SendMessage32A( hwndParent,
 222                                            WM_CTLCOLORMSGBOX + (UINT32)hbrush,
 223                                            (WPARAM32)hdc, (LPARAM)hwnd );
 224     }
 225     if (hbrush) FillRect16( hdc, rect, hbrush );
 226 }
 227
 228
 229 /***********************************************************************
 230  *           GetControlBrush    (USER.326)
 231  */
 232 HBRUSH16 GetControlBrush( HWND16 hwnd, HDC16 hdc, UINT16 control )
 233 {
 234     return (HBRUSH16)SendMessage32A( GetParent32(hwnd), WM_CTLCOLOR+control,
 235                                      (WPARAM32)hdc, (LPARAM)hwnd );
 236 }
 237
 238
 239 /***********************************************************************
 240  *           PAINT_RedrawWindow
 241  *
 242  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 243  * SendMessage() calls. From SDK:
 244  *   This message avoids lots of inter-app message traffic
 245  *   by switching to the other task and continuing the
 246  *   recursion there.
 247  *
 248  * wParam         = flags
 249  * LOWORD(lParam) = hrgnClip
 250  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 251  *
 252  * All in all, a prime candidate for a rewrite.
 253  */
 254 BOOL32 PAINT_RedrawWindow( HWND32 hwnd, const RECT32 *rectUpdate,
 255                            HRGN32 hrgnUpdate, UINT32 flags, UINT32 control )
 256 {
 257     BOOL32 bIcon;
 258     HRGN32 hrgn;
 259     RECT32 rectClient;
 260     WND* wndPtr;
 261     WND **list, **ppWnd;
 262
 263     if (!hwnd) hwnd = GetDesktopWindow32();
 264     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 265     if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) )
 266         || (wndPtr->flags & WIN_NO_REDRAW)) return TRUE;  /* No redraw needed */
 267
 268     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
 269     if (rectUpdate)
 270     {
 271         dprintf_win(stddeb, "RedrawWindow: %04x %d,%d-%d,%d %04x flags=%04x\n",
 272                     hwnd, rectUpdate->left, rectUpdate->top,
 273                     rectUpdate->right, rectUpdate->bottom, hrgnUpdate, flags );
 274     }
 275     else
 276     {
 277         dprintf_win(stddeb, "RedrawWindow: %04x NULL %04x flags=%04x\n",
 278                      hwnd, hrgnUpdate, flags);
 279     }
 280
 281     GetClientRect32( hwnd, &rectClient );
 282
 283     if (flags & RDW_INVALIDATE)  /* Invalidate */
 284     {
 285         int rgnNotEmpty = COMPLEXREGION;
 286
 287         if (wndPtr->hrgnUpdate > 1)  /* Is there already an update region? */
 288         {
 289             if ((hrgn = hrgnUpdate) == 0)
 290                 hrgn = CreateRectRgnIndirect32( rectUpdate ? rectUpdate :
 291                                                 &rectClient );
 292             rgnNotEmpty = CombineRgn32( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
 293                                         hrgn, RGN_OR );
 294             if (!hrgnUpdate) DeleteObject32( hrgn );
 295         }
 296         else  /* No update region yet */
 297         {
 298             if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 299                 QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 300             if (hrgnUpdate)
 301             {
 302                 wndPtr->hrgnUpdate = CreateRectRgn32( 0, 0, 0, 0 );
 303                 rgnNotEmpty = CombineRgn32( wndPtr->hrgnUpdate, hrgnUpdate,
 304                                             0, RGN_COPY );
 305             }
 306             else wndPtr->hrgnUpdate = CreateRectRgnIndirect32( rectUpdate ?
 307                                                     rectUpdate : &rectClient );
 308         }
 309
 310         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 311
 312         /* check for bogus update region */
 313         if ( rgnNotEmpty == NULLREGION )
 314            {
 315              wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 316              DeleteObject32( wndPtr->hrgnUpdate );
 317              wndPtr->hrgnUpdate=0;
 318              if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 319                    QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 320            }
 321         else
 322              if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 323         flags |= RDW_FRAME;  /* Force children frame invalidation */
 324     }
 325     else if (flags & RDW_VALIDATE)  /* Validate */
 326     {
 327           /* We need an update region in order to validate anything */
 328         if (wndPtr->hrgnUpdate > 1)
 329         {
 330             if (!hrgnUpdate && !rectUpdate)
 331             {
 332                   /* Special case: validate everything */
 333                 DeleteObject32( wndPtr->hrgnUpdate );
 334                 wndPtr->hrgnUpdate = 0;
 335             }
 336             else
 337             {
 338                 if ((hrgn = hrgnUpdate) == 0)
 339                     hrgn = CreateRectRgnIndirect32( rectUpdate );
 340                 if (CombineRgn32( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
 341                                   hrgn, RGN_DIFF ) == NULLREGION)
 342                 {
 343                     DeleteObject32( wndPtr->hrgnUpdate );
 344                     wndPtr->hrgnUpdate = 0;
 345                 }
 346                 if (!hrgnUpdate) DeleteObject32( hrgn );
 347             }
 348             if (!wndPtr->hrgnUpdate)  /* No more update region */
 349                 if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 350                     QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 351         }
 352         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 353         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 354     }
 355
 356       /* Set/clear internal paint flag */
 357
 358     if (flags & RDW_INTERNALPAINT)
 359     {
 360         if ( wndPtr->hrgnUpdate <= 1 && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 361             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 362         wndPtr->flags |= WIN_INTERNAL_PAINT;
 363     }
 364     else if (flags & RDW_NOINTERNALPAINT)
 365     {
 366         if ( wndPtr->hrgnUpdate <= 1 && (wndPtr->flags & WIN_INTERNAL_PAINT))
 367             QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 368         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 369     }
 370
 371       /* Erase/update window */
 372
 373     if (flags & RDW_UPDATENOW)
 374     {
 375         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 376             SendMessage16( hwnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 377     }
 378     else if (flags & RDW_ERASENOW)
 379     {
 380         if (wndPtr->flags & WIN_NEEDS_NCPAINT)
 381             WIN_UpdateNCArea( wndPtr, FALSE);
 382
 383         if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 384         {
 385             HDC32 hdc = GetDCEx32( hwnd, wndPtr->hrgnUpdate,
 386                                    DCX_INTERSECTRGN | DCX_USESTYLE |
 387                                    DCX_KEEPCLIPRGN | DCX_WINDOWPAINT |
 388                                    (bIcon ? DCX_WINDOW : 0) );
 389             if (hdc)
 390             {
 391                if (SendMessage16( hwnd, (bIcon) ? WM_ICONERASEBKGND
 392                                                 : WM_ERASEBKGND,
 393                                   (WPARAM16)hdc, 0 ))
 394                   wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 395                ReleaseDC32( hwnd, hdc );
 396             }
 397         }
 398     }
 399
 400       /* Recursively process children */
 401
 402     if (!(flags & RDW_NOCHILDREN) &&
 403         ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) &&
 404         !(wndPtr->dwStyle & WS_MINIMIZE) )
 405     {
 406         if ( hrgnUpdate || rectUpdate )
 407         {
 408            if (!(hrgn = CreateRectRgn32( 0, 0, 0, 0 ))) return TRUE;
 409            if( !hrgnUpdate )
 410            {
 411                 control |= (RDW_C_DELETEHRGN | RDW_C_USEHRGN);
 412                 if( !(hrgnUpdate = CreateRectRgnIndirect32( rectUpdate )) )
 413                 {
 414                     DeleteObject32( hrgn );
 415                     return TRUE;
 416                 }
 417            }
 418            if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 419            {
 420                 for (ppWnd = list; *ppWnd; ppWnd++)
 421                 {
 422                     wndPtr = *ppWnd;
 423                     if (!IsWindow32(wndPtr->hwndSelf)) continue;
 424                     if (wndPtr->dwStyle & WS_VISIBLE)
 425                     {
 426                         SetRectRgn32( hrgn,
 427                                 wndPtr->rectWindow.left, wndPtr->rectWindow.top,
 428                                 wndPtr->rectWindow.right, wndPtr->rectWindow.bottom );
 429                         if (CombineRgn32( hrgn, hrgn, hrgnUpdate, RGN_AND ))
 430                         {
 431                             OffsetRgn32( hrgn, -wndPtr->rectClient.left,
 432                                         -wndPtr->rectClient.top );
 433                             PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, hrgn, flags,
 434                                          RDW_C_USEHRGN );
 435                         }
 436                     }
 437                 }
 438                 HeapFree( SystemHeap, 0, list );
 439            }
 440            DeleteObject32( hrgn );
 441            if (control & RDW_C_DELETEHRGN) DeleteObject32( hrgnUpdate );
 442         }
 443         else
 444         {
 445             if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 446             {
 447                 for (ppWnd = list; *ppWnd; ppWnd++)
 448                 {
 449                     wndPtr = *ppWnd;
 450                     if (IsWindow32( wndPtr->hwndSelf ))
 451                         PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, 0, flags, 0 );
 452                 }
 453                 HeapFree( SystemHeap, 0, list );
 454             }
 455         }
 456
 457     }
 458     return TRUE;
 459 }
 460
 461
 462 /***********************************************************************
 463  *           RedrawWindow32    (USER32.425)
 464  */
 465 BOOL32 RedrawWindow32( HWND32 hwnd, const RECT32 *rectUpdate,
 466                        HRGN32 hrgnUpdate, UINT32 flags )
 467 {
 468     return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
 469 }
 470
 471
 472 /***********************************************************************
 473  *           RedrawWindow16    (USER.290)
 474  */
 475 BOOL16 RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
 476                        HRGN16 hrgnUpdate, UINT16 flags )
 477 {
 478     if (rectUpdate)
 479     {
 480         RECT32 r;
 481         CONV_RECT16TO32( rectUpdate, &r );
 482         return (BOOL16)RedrawWindow32( (HWND32)hwnd, &r, hrgnUpdate, flags );
 483     }
 484     return (BOOL16)PAINT_RedrawWindow( (HWND32)hwnd, NULL,
 485                                        (HRGN32)hrgnUpdate, flags, 0 );
 486 }
 487
 488
 489 /***********************************************************************
 490  *           UpdateWindow16   (USER.124)
 491  */
 492 void UpdateWindow16( HWND16 hwnd )
 493 {
 494     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
 495 }
 496
 497 /***********************************************************************
 498  *           UpdateWindow32   (USER32.566)
 499  */
 500 void UpdateWindow32( HWND32 hwnd )
 501 {
 502     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
 503 }
 504
 505 /***********************************************************************
 506  *           InvalidateRgn16   (USER.126)
 507  */
 508 void InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
 509 {
 510     PAINT_RedrawWindow((HWND32)hwnd, NULL, (HRGN32)hrgn,
 511                        RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 512 }
 513
 514
 515 /***********************************************************************
 516  *           InvalidateRgn32   (USER32.328)
 517  */
 518 void InvalidateRgn32( HWND32 hwnd, HRGN32 hrgn, BOOL32 erase )
 519 {
 520     PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 521 }
 522
 523
 524 /***********************************************************************
 525  *           InvalidateRect16   (USER.125)
 526  */
 527 void InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
 528 {
 529     RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 530 }
 531
 532
 533 /***********************************************************************
 534  *           InvalidateRect32   (USER32.327)
 535  */
 536 void InvalidateRect32( HWND32 hwnd, const RECT32 *rect, BOOL32 erase )
 537 {
 538     PAINT_RedrawWindow( hwnd, rect, 0,
 539                         RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 540 }
 541
 542
 543 /***********************************************************************
 544  *           ValidateRgn16   (USER.128)
 545  */
 546 void ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
 547 {
 548     PAINT_RedrawWindow( (HWND32)hwnd, NULL, (HRGN32)hrgn,
 549                         RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 550 }
 551
 552
 553 /***********************************************************************
 554  *           ValidateRgn32   (USER32.571)
 555  */
 556 void ValidateRgn32( HWND32 hwnd, HRGN32 hrgn )
 557 {
 558     PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 559 }
 560
 561
 562 /***********************************************************************
 563  *           ValidateRect16   (USER.127)
 564  */
 565 void ValidateRect16( HWND16 hwnd, const RECT16 *rect )
 566 {
 567     RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
 568 }
 569
 570
 571 /***********************************************************************
 572  *           ValidateRect32   (USER32.570)
 573  */
 574 void ValidateRect32( HWND32 hwnd, const RECT32 *rect )
 575 {
 576     PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 577 }
 578
 579
 580 /***********************************************************************
 581  *           GetUpdateRect16   (USER.190)
 582  */
 583 BOOL16 GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
 584 {
 585     RECT32 r;
 586     BOOL16 ret;
 587
 588     if (!rect) return GetUpdateRect32( hwnd, NULL, erase );
 589     ret = GetUpdateRect32( hwnd, &r, erase );
 590     CONV_RECT32TO16( &r, rect );
 591     return ret;
 592 }
 593
 594
 595 /***********************************************************************
 596  *           GetUpdateRect32   (USER32.296)
 597  */
 598 BOOL32 GetUpdateRect32( HWND32 hwnd, LPRECT32 rect, BOOL32 erase )
 599 {
 600     WND * wndPtr = WIN_FindWndPtr( hwnd );
 601     if (!wndPtr) return FALSE;
 602
 603     if (rect)
 604     {
 605         if (wndPtr->hrgnUpdate > 1)
 606         {
 607             HRGN32 hrgn = CreateRectRgn32( 0, 0, 0, 0 );
 608             if (GetUpdateRgn32( hwnd, hrgn, erase ) == ERROR) return FALSE;
 609             GetRgnBox32( hrgn, rect );
 610             DeleteObject32( hrgn );
 611         }
 612         else SetRectEmpty32( rect );
 613     }
 614     return (wndPtr->hrgnUpdate > 1);
 615 }
 616
 617
 618 /***********************************************************************
 619  *           GetUpdateRgn16   (USER.237)
 620  */
 621 INT16 GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
 622 {
 623     return GetUpdateRgn32( hwnd, hrgn, erase );
 624 }
 625
 626
 627 /***********************************************************************
 628  *           GetUpdateRgn32   (USER32.297)
 629  */
 630 INT32 GetUpdateRgn32( HWND32 hwnd, HRGN32 hrgn, BOOL32 erase )
 631 {
 632     INT32 retval;
 633     WND * wndPtr = WIN_FindWndPtr( hwnd );
 634     if (!wndPtr) return ERROR;
 635
 636     if (wndPtr->hrgnUpdate <= 1)
 637     {
 638         SetRectRgn32( hrgn, 0, 0, 0, 0 );
 639         return NULLREGION;
 640     }
 641     retval = CombineRgn32( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
 642     if (erase) RedrawWindow32( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
 643     return retval;
 644 }
 645
 646
 647 /***********************************************************************
 648  *           ExcludeUpdateRgn16   (USER.238)
 649  */
 650 INT16 ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
 651 {
 652     return ExcludeUpdateRgn32( hdc, hwnd );
 653 }
 654
 655
 656 /***********************************************************************
 657  *           ExcludeUpdateRgn32   (USER32.194)
 658  */
 659 INT32 ExcludeUpdateRgn32( HDC32 hdc, HWND32 hwnd )
 660 {
 661     RECT32 rect;
 662     WND * wndPtr;
 663
 664     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
 665
 666     if (wndPtr->hrgnUpdate)
 667     {
 668         INT32 ret;
 669         HRGN32 hrgn = CreateRectRgn32(wndPtr->rectWindow.left - wndPtr->rectClient.left,
 670                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
 671                                       wndPtr->rectClient.right - wndPtr->rectClient.left,
 672                                       wndPtr->rectClient.bottom - wndPtr->rectClient.top);
 673         if( wndPtr->hrgnUpdate > 1 )
 674             CombineRgn32(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
 675
 676         /* do ugly coordinate translations in dce.c */
 677
 678         ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
 679         DeleteObject32( hrgn );
 680         return ret;
 681     }
 682     return GetClipBox32( hdc, &rect );
 683 }
 684
 685