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 "dce.h"
  14 #include "heap.h"
  15 #include "debug.h"
  16 #include "wine/winuser16.h"
  17
  18   /* Last CTLCOLOR id */
  19 #define CTLCOLOR_MAX   CTLCOLOR_STATIC
  20
  21 /***********************************************************************
  22  *           WIN_UpdateNCArea
  23  *
  24  */
  25 void WIN_UpdateNCArea(WND* wnd, BOOL bUpdate)
  26 {
  27     POINT16 pt = {0, 0};
  28     HRGN hClip = 1;
  29
  30     TRACE(nonclient,"hwnd %04x, hrgnUpdate %04x\n",
  31                       wnd->hwndSelf, wnd->hrgnUpdate );
  32
  33     /* desktop window doesn't have nonclient area */
  34     if(wnd == WIN_GetDesktop())
  35     {
  36         wnd->flags &= ~WIN_NEEDS_NCPAINT;
  37         WIN_ReleaseDesktop();
  38         return;
  39     }
  40     WIN_ReleaseDesktop();
  41
  42     if( wnd->hrgnUpdate > 1 )
  43     {
  44         ClientToScreen16(wnd->hwndSelf, &pt);
  45
  46         hClip = CreateRectRgn( 0, 0, 0, 0 );
  47         if (!CombineRgn( hClip, wnd->hrgnUpdate, 0, RGN_COPY ))
  48         {
  49             DeleteObject(hClip);
  50             hClip = 1;
  51         }
  52         else
  53             OffsetRgn( hClip, pt.x, pt.y );
  54
  55         if (bUpdate)
  56         {
  57             /* exclude non-client area from update region */
  58             HRGN hrgn = CreateRectRgn( 0, 0,
  59                                  wnd->rectClient.right - wnd->rectClient.left,
  60                                  wnd->rectClient.bottom - wnd->rectClient.top);
  61
  62             if (hrgn && (CombineRgn( wnd->hrgnUpdate, wnd->hrgnUpdate,
  63                                        hrgn, RGN_AND) == NULLREGION))
  64             {
  65                 DeleteObject( wnd->hrgnUpdate );
  66                 wnd->hrgnUpdate = 1;
  67             }
  68
  69             DeleteObject( hrgn );
  70         }
  71     }
  72
  73     wnd->flags &= ~WIN_NEEDS_NCPAINT;
  74
  75     if ((wnd->hwndSelf == GetActiveWindow()) &&
  76         !(wnd->flags & WIN_NCACTIVATED))
  77     {
  78         wnd->flags |= WIN_NCACTIVATED;
  79         if( hClip > 1) DeleteObject( hClip );
  80         hClip = 1;
  81     }
  82
  83     if (hClip) SendMessage16( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
  84
  85     if (hClip > 1) DeleteObject( hClip );
  86 }
  87
  88
  89 /***********************************************************************
  90  *           BeginPaint16    (USER.39)
  91  */
  92 HDC16 WINAPI BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
  93 {
  94     BOOL bIcon;
  95     HRGN hrgnUpdate;
  96     WND *wndPtr = WIN_FindWndPtr( hwnd );
  97     if (!wndPtr) return 0;
  98
  99     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
 100
 101     wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 102
 103     if (wndPtr->flags & WIN_NEEDS_NCPAINT) WIN_UpdateNCArea( wndPtr, TRUE );
 104
 105     if (((hrgnUpdate = wndPtr->hrgnUpdate) != 0) ||
 106         (wndPtr->flags & WIN_INTERNAL_PAINT))
 107         QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 108
 109     wndPtr->hrgnUpdate = 0;
 110     wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 111
 112     HideCaret( hwnd );
 113
 114     TRACE(win,"hrgnUpdate = %04x, \n", hrgnUpdate);
 115
 116     /* When bIcon is TRUE hrgnUpdate is automatically in window coordinates
 117      * (because rectClient == rectWindow for WS_MINIMIZE windows).
 118      */
 119
 120     if (wndPtr->class->style & CS_PARENTDC)
 121     {
 122         /* Don't clip the output to the update region for CS_PARENTDC window */
 123         if(hrgnUpdate > 1)
 124             DeleteObject(hrgnUpdate);
 125         lps->hdc = GetDCEx16( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
 126                               (bIcon ? DCX_WINDOW : 0) );
 127     }
 128     else
 129     {
 130         lps->hdc = GetDCEx16(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
 131                              DCX_WINDOWPAINT | DCX_USESTYLE |
 132                              (bIcon ? DCX_WINDOW : 0) );
 133     }
 134
 135     TRACE(win,"hdc = %04x\n", lps->hdc);
 136
 137     if (!lps->hdc)
 138     {
 139         WARN(win, "GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
 140         WIN_ReleaseWndPtr(wndPtr);
 141         return 0;
 142     }
 143
 144     GetClipBox16( lps->hdc, &lps->rcPaint );
 145
 146 TRACE(win,"box = (%i,%i - %i,%i)\n", lps->rcPaint.left, lps->rcPaint.top,
 147                     lps->rcPaint.right, lps->rcPaint.bottom );
 148
 149     if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 150     {
 151         wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 152         lps->fErase = !SendMessage16(hwnd, (bIcon) ? WM_ICONERASEBKGND
 153                                                    : WM_ERASEBKGND,
 154                                      (WPARAM16)lps->hdc, 0 );
 155     }
 156     else lps->fErase = TRUE;
 157
 158     WIN_ReleaseWndPtr(wndPtr);
 159     return lps->hdc;
 160 }
 161
 162
 163 /***********************************************************************
 164  *           BeginPaint32    (USER32.10)
 165  */
 166 HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
 167 {
 168     PAINTSTRUCT16 ps;
 169
 170     BeginPaint16( hwnd, &ps );
 171     lps->hdc            = (HDC)ps.hdc;
 172     lps->fErase         = ps.fErase;
 173     lps->rcPaint.top    = ps.rcPaint.top;
 174     lps->rcPaint.left   = ps.rcPaint.left;
 175     lps->rcPaint.right  = ps.rcPaint.right;
 176     lps->rcPaint.bottom = ps.rcPaint.bottom;
 177     lps->fRestore       = ps.fRestore;
 178     lps->fIncUpdate     = ps.fIncUpdate;
 179     return lps->hdc;
 180 }
 181
 182
 183 /***********************************************************************
 184  *           EndPaint16    (USER.40)
 185  */
 186 BOOL16 WINAPI EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
 187 {
 188     ReleaseDC16( hwnd, lps->hdc );
 189     ShowCaret( hwnd );
 190     return TRUE;
 191 }
 192
 193
 194 /***********************************************************************
 195  *           EndPaint32    (USER32.176)
 196  */
 197 BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
 198 {
 199     ReleaseDC( hwnd, lps->hdc );
 200     ShowCaret( hwnd );
 201     return TRUE;
 202 }
 203
 204
 205 /***********************************************************************
 206  *           FillWindow    (USER.324)
 207  */
 208 void WINAPI FillWindow16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
 209 {
 210     RECT16 rect;
 211     GetClientRect16( hwnd, &rect );
 212     DPtoLP16( hdc, (LPPOINT16)&rect, 2 );
 213     PaintRect16( hwndParent, hwnd, hdc, hbrush, &rect );
 214 }
 215
 216
 217 /***********************************************************************
 218  *           PAINT_GetControlBrush
 219  */
 220 static HBRUSH16 PAINT_GetControlBrush( HWND hParent, HWND hWnd, HDC16 hDC, UINT16 ctlType )
 221 {
 222     HBRUSH16 bkgBrush = (HBRUSH16)SendMessageA( hParent, WM_CTLCOLORMSGBOX + ctlType,
 223                                                              (WPARAM)hDC, (LPARAM)hWnd );
 224     if( !IsGDIObject16(bkgBrush) )
 225         bkgBrush = DEFWND_ControlColor( hDC, ctlType );
 226     return bkgBrush;
 227 }
 228
 229
 230 /***********************************************************************
 231  *           PaintRect    (USER.325)
 232  */
 233 void WINAPI PaintRect16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
 234                        HBRUSH16 hbrush, const RECT16 *rect)
 235 {
 236     if( hbrush <= CTLCOLOR_MAX )
 237     {
 238         if( hwndParent )
 239             hbrush = PAINT_GetControlBrush( hwndParent, hwnd, hdc, (UINT16)hbrush );
 240         else
 241             return;
 242     }
 243     if( hbrush )
 244         FillRect16( hdc, rect, hbrush );
 245 }
 246
 247
 248 /***********************************************************************
 249  *           GetControlBrush    (USER.326)
 250  */
 251 HBRUSH16 WINAPI GetControlBrush16( HWND16 hwnd, HDC16 hdc, UINT16 ctlType )
 252 {
 253     WND* wndPtr = WIN_FindWndPtr( hwnd );
 254     HBRUSH16 retvalue;
 255
 256     if((ctlType <= CTLCOLOR_MAX) && wndPtr )
 257     {
 258         WND* parent;
 259         if( wndPtr->dwStyle & WS_POPUP ) parent = WIN_LockWndPtr(wndPtr->owner);
 260         else parent = WIN_LockWndPtr(wndPtr->parent);
 261         if( !parent ) parent = wndPtr;
 262         retvalue = (HBRUSH16)PAINT_GetControlBrush( parent->hwndSelf, hwnd, hdc, ctlType );
 263         WIN_ReleaseWndPtr(parent);
 264         goto END;
 265     }
 266     retvalue = (HBRUSH16)0;
 267 END:
 268     WIN_ReleaseWndPtr(wndPtr);
 269     return retvalue;
 270     }
 271
 272
 273 /***********************************************************************
 274  *           PAINT_RedrawWindow
 275  *
 276  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 277  * SendMessage() calls. This is a comment inside DefWindowProc() source
 278  * from 16-bit SDK:
 279  *
 280  *   This message avoids lots of inter-app message traffic
 281  *   by switching to the other task and continuing the
 282  *   recursion there.
 283  *
 284  * wParam         = flags
 285  * LOWORD(lParam) = hrgnClip
 286  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 287  *
 288  * All in all, a prime candidate for a rewrite.
 289  */
 290 BOOL PAINT_RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 291                            HRGN hrgnUpdate, UINT flags, UINT control )
 292 {
 293     BOOL bIcon;
 294     HRGN hrgn;
 295     RECT rectClient;
 296     WND* wndPtr;
 297     WND **list, **ppWnd;
 298
 299     if (!hwnd) hwnd = GetDesktopWindow();
 300     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 301     if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) ) )
 302     {
 303         WIN_ReleaseWndPtr(wndPtr);
 304         return TRUE;  /* No redraw needed */
 305     }
 306
 307     bIcon = (wndPtr->dwStyle & WS_MINIMIZE && wndPtr->class->hIcon);
 308     if (rectUpdate)
 309     {
 310         TRACE(win, "%04x %d,%d-%d,%d %04x flags=%04x\n",
 311                     hwnd, rectUpdate->left, rectUpdate->top,
 312                     rectUpdate->right, rectUpdate->bottom, hrgnUpdate, flags );
 313     }
 314     else
 315     {
 316         TRACE(win, "%04x NULL %04x flags=%04x\n", hwnd, hrgnUpdate, flags);
 317     }
 318
 319     GetClientRect( hwnd, &rectClient );
 320
 321     if (flags & RDW_INVALIDATE)  /* Invalidate */
 322     {
 323         int rgnNotEmpty = COMPLEXREGION;
 324
 325         if (wndPtr->hrgnUpdate > 1)  /* Is there already an update region? */
 326         {
 327             if ((hrgn = hrgnUpdate) == 0)
 328                 hrgn = CreateRectRgnIndirect( rectUpdate ? rectUpdate :
 329                                                 &rectClient );
 330             rgnNotEmpty = CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
 331                                         hrgn, RGN_OR );
 332             if (!hrgnUpdate) DeleteObject( hrgn );
 333         }
 334         else  /* No update region yet */
 335         {
 336             if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 337                 QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 338             if (hrgnUpdate)
 339             {
 340                 wndPtr->hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
 341                 rgnNotEmpty = CombineRgn( wndPtr->hrgnUpdate, hrgnUpdate,
 342                                             0, RGN_COPY );
 343             }
 344             else wndPtr->hrgnUpdate = CreateRectRgnIndirect( rectUpdate ?
 345                                                     rectUpdate : &rectClient );
 346         }
 347
 348         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 349
 350         /* restrict update region to client area (FIXME: correct?) */
 351         if (wndPtr->hrgnUpdate)
 352         {
 353             HRGN clientRgn = CreateRectRgnIndirect( &rectClient );
 354             rgnNotEmpty = CombineRgn( wndPtr->hrgnUpdate, clientRgn,
 355                                         wndPtr->hrgnUpdate, RGN_AND );
 356             DeleteObject( clientRgn );
 357         }
 358
 359         /* check for bogus update region */
 360         if ( rgnNotEmpty == NULLREGION )
 361            {
 362              wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 363              DeleteObject( wndPtr->hrgnUpdate );
 364              wndPtr->hrgnUpdate=0;
 365              if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 366                    QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 367            }
 368         else
 369              if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 370         flags |= RDW_FRAME;  /* Force children frame invalidation */
 371     }
 372     else if (flags & RDW_VALIDATE)  /* Validate */
 373     {
 374           /* We need an update region in order to validate anything */
 375         if (wndPtr->hrgnUpdate > 1)
 376         {
 377             if (!hrgnUpdate && !rectUpdate)
 378             {
 379                   /* Special case: validate everything */
 380                 DeleteObject( wndPtr->hrgnUpdate );
 381                 wndPtr->hrgnUpdate = 0;
 382             }
 383             else
 384             {
 385                 if ((hrgn = hrgnUpdate) == 0)
 386                     hrgn = CreateRectRgnIndirect( rectUpdate );
 387                 if (CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate,
 388                                   hrgn, RGN_DIFF ) == NULLREGION)
 389                 {
 390                     DeleteObject( wndPtr->hrgnUpdate );
 391                     wndPtr->hrgnUpdate = 0;
 392                 }
 393                 if (!hrgnUpdate) DeleteObject( hrgn );
 394             }
 395             if (!wndPtr->hrgnUpdate)  /* No more update region */
 396                 if (!(wndPtr->flags & WIN_INTERNAL_PAINT))
 397                     QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 398         }
 399         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 400         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 401     }
 402
 403       /* Set/clear internal paint flag */
 404
 405     if (flags & RDW_INTERNALPAINT)
 406     {
 407         if ( wndPtr->hrgnUpdate <= 1 && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 408             QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
 409         wndPtr->flags |= WIN_INTERNAL_PAINT;
 410     }
 411     else if (flags & RDW_NOINTERNALPAINT)
 412     {
 413         if ( wndPtr->hrgnUpdate <= 1 && (wndPtr->flags & WIN_INTERNAL_PAINT))
 414             QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
 415         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 416     }
 417
 418       /* Erase/update window */
 419
 420     if (flags & RDW_UPDATENOW)
 421     {
 422         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 423             SendMessage16( hwnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 424     }
 425     else if (flags & RDW_ERASENOW)
 426     {
 427         if (wndPtr->flags & WIN_NEEDS_NCPAINT)
 428             WIN_UpdateNCArea( wndPtr, FALSE);
 429
 430         if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
 431         {
 432             HDC hdc = GetDCEx( hwnd, wndPtr->hrgnUpdate,
 433                                    DCX_INTERSECTRGN | DCX_USESTYLE |
 434                                    DCX_KEEPCLIPRGN | DCX_WINDOWPAINT |
 435                                    (bIcon ? DCX_WINDOW : 0) );
 436             if (hdc)
 437             {
 438                if (SendMessage16( hwnd, (bIcon) ? WM_ICONERASEBKGND
 439                                                 : WM_ERASEBKGND,
 440                                   (WPARAM16)hdc, 0 ))
 441                   wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 442                ReleaseDC( hwnd, hdc );
 443             }
 444         }
 445     }
 446
 447       /* Recursively process children */
 448
 449     if (!(flags & RDW_NOCHILDREN) &&
 450         ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) &&
 451         !(wndPtr->dwStyle & WS_MINIMIZE) )
 452     {
 453         if ( hrgnUpdate || rectUpdate )
 454         {
 455             if (!(hrgn = CreateRectRgn( 0, 0, 0, 0 )))
 456         {
 457                 WIN_ReleaseWndPtr(wndPtr);
 458                 return TRUE;
 459             }
 460            if( !hrgnUpdate )
 461            {
 462                 control |= (RDW_C_DELETEHRGN | RDW_C_USEHRGN);
 463                 if( !(hrgnUpdate = CreateRectRgnIndirect( rectUpdate )) )
 464                 {
 465                     DeleteObject( hrgn );
 466                     WIN_ReleaseWndPtr(wndPtr);
 467                     return TRUE;
 468                 }
 469            }
 470            if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 471            {
 472                 for (ppWnd = list; *ppWnd; ppWnd++)
 473                 {
 474                     WIN_UpdateWndPtr(&wndPtr,*ppWnd);
 475                     if (!IsWindow(wndPtr->hwndSelf)) continue;
 476                     if (wndPtr->dwStyle & WS_VISIBLE)
 477                     {
 478                         SetRectRgn( hrgn,
 479                                 wndPtr->rectWindow.left, wndPtr->rectWindow.top,
 480                                 wndPtr->rectWindow.right, wndPtr->rectWindow.bottom );
 481                         if (CombineRgn( hrgn, hrgn, hrgnUpdate, RGN_AND ))
 482                         {
 483                             OffsetRgn( hrgn, -wndPtr->rectClient.left,
 484                                         -wndPtr->rectClient.top );
 485                             PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, hrgn, flags,
 486                                          RDW_C_USEHRGN );
 487                         }
 488                     }
 489                 }
 490                 WIN_ReleaseWinArray(list);
 491            }
 492            DeleteObject( hrgn );
 493            if (control & RDW_C_DELETEHRGN) DeleteObject( hrgnUpdate );
 494         }
 495         else
 496         {
 497             if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
 498             {
 499                 for (ppWnd = list; *ppWnd; ppWnd++)
 500                 {
 501                     WIN_UpdateWndPtr(&wndPtr,*ppWnd);
 502                     if (IsWindow( wndPtr->hwndSelf ))
 503                         PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, 0, flags, 0 );
 504                 }
 505                 WIN_ReleaseWinArray(list);
 506             }
 507         }
 508
 509     }
 510     WIN_ReleaseWndPtr(wndPtr);
 511     return TRUE;
 512 }
 513
 514
 515 /***********************************************************************
 516  *           RedrawWindow32    (USER32.426)
 517  */
 518 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 519                               HRGN hrgnUpdate, UINT flags )
 520 {
 521     return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
 522 }
 523
 524
 525 /***********************************************************************
 526  *           RedrawWindow16    (USER.290)
 527  */
 528 BOOL16 WINAPI RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
 529                               HRGN16 hrgnUpdate, UINT16 flags )
 530 {
 531     if (rectUpdate)
 532     {
 533         RECT r;
 534         CONV_RECT16TO32( rectUpdate, &r );
 535         return (BOOL16)RedrawWindow( (HWND)hwnd, &r, hrgnUpdate, flags );
 536     }
 537     return (BOOL16)PAINT_RedrawWindow( (HWND)hwnd, NULL,
 538                                        (HRGN)hrgnUpdate, flags, 0 );
 539 }
 540
 541
 542 /***********************************************************************
 543  *           UpdateWindow16   (USER.124)
 544  */
 545 void WINAPI UpdateWindow16( HWND16 hwnd )
 546 {
 547     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
 548 }
 549
 550 /***********************************************************************
 551  *           UpdateWindow32   (USER32.567)
 552  */
 553 void WINAPI UpdateWindow( HWND hwnd )
 554 {
 555     PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
 556 }
 557
 558 /***********************************************************************
 559  *           InvalidateRgn16   (USER.126)
 560  */
 561 void WINAPI InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
 562 {
 563     PAINT_RedrawWindow((HWND)hwnd, NULL, (HRGN)hrgn,
 564                        RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 565 }
 566
 567
 568 /***********************************************************************
 569  *           InvalidateRgn32   (USER32.329)
 570  */
 571 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 572 {
 573     return PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 574 }
 575
 576
 577 /***********************************************************************
 578  *           InvalidateRect16   (USER.125)
 579  */
 580 void WINAPI InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
 581 {
 582     RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 583 }
 584
 585
 586 /***********************************************************************
 587  *           InvalidateRect32   (USER32.328)
 588  */
 589 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
 590 {
 591     return PAINT_RedrawWindow( hwnd, rect, 0,
 592                                RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
 593 }
 594
 595
 596 /***********************************************************************
 597  *           ValidateRgn16   (USER.128)
 598  */
 599 void WINAPI ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
 600 {
 601     PAINT_RedrawWindow( (HWND)hwnd, NULL, (HRGN)hrgn,
 602                         RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 603 }
 604
 605
 606 /***********************************************************************
 607  *           ValidateRgn32   (USER32.572)
 608  */
 609 void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
 610 {
 611     PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 612 }
 613
 614
 615 /***********************************************************************
 616  *           ValidateRect16   (USER.127)
 617  */
 618 void WINAPI ValidateRect16( HWND16 hwnd, const RECT16 *rect )
 619 {
 620     RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
 621 }
 622
 623
 624 /***********************************************************************
 625  *           ValidateRect32   (USER32.571)
 626  */
 627 void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
 628 {
 629     PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
 630 }
 631
 632
 633 /***********************************************************************
 634  *           GetUpdateRect16   (USER.190)
 635  */
 636 BOOL16 WINAPI GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
 637 {
 638     RECT r;
 639     BOOL16 ret;
 640
 641     if (!rect) return GetUpdateRect( hwnd, NULL, erase );
 642     ret = GetUpdateRect( hwnd, &r, erase );
 643     CONV_RECT32TO16( &r, rect );
 644     return ret;
 645 }
 646
 647
 648 /***********************************************************************
 649  *           GetUpdateRect32   (USER32.297)
 650  */
 651 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
 652 {
 653     BOOL retvalue;
 654     WND * wndPtr = WIN_FindWndPtr( hwnd );
 655     if (!wndPtr) return FALSE;
 656
 657     if (rect)
 658     {
 659         if (wndPtr->hrgnUpdate > 1)
 660         {
 661             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
 662             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
 663             {
 664                 retvalue = FALSE;
 665                 goto END;
 666             }
 667             GetRgnBox( hrgn, rect );
 668             DeleteObject( hrgn );
 669             if (wndPtr->class->style & CS_OWNDC)
 670             {
 671                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
 672                 {
 673                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
 674                 }
 675             }
 676         }
 677         else SetRectEmpty( rect );
 678     }
 679     retvalue = (wndPtr->hrgnUpdate > 1);
 680 END:
 681     WIN_ReleaseWndPtr(wndPtr);
 682     return retvalue;
 683 }
 684
 685
 686 /***********************************************************************
 687  *           GetUpdateRgn16   (USER.237)
 688  */
 689 INT16 WINAPI GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
 690 {
 691     return GetUpdateRgn( hwnd, hrgn, erase );
 692 }
 693
 694
 695 /***********************************************************************
 696  *           GetUpdateRgn32   (USER32.298)
 697  */
 698 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 699 {
 700     INT retval;
 701     WND * wndPtr = WIN_FindWndPtr( hwnd );
 702     if (!wndPtr) return ERROR;
 703
 704     if (wndPtr->hrgnUpdate <= 1)
 705     {
 706         SetRectRgn( hrgn, 0, 0, 0, 0 );
 707         retval = NULLREGION;
 708         goto END;
 709     }
 710     retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
 711     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
 712 END:
 713     WIN_ReleaseWndPtr(wndPtr);
 714     return retval;
 715 }
 716
 717
 718 /***********************************************************************
 719  *           ExcludeUpdateRgn16   (USER.238)
 720  */
 721 INT16 WINAPI ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
 722 {
 723     return ExcludeUpdateRgn( hdc, hwnd );
 724 }
 725
 726
 727 /***********************************************************************
 728  *           ExcludeUpdateRgn32   (USER32.195)
 729  */
 730 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
 731 {
 732     RECT rect;
 733     WND * wndPtr;
 734
 735     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
 736
 737     if (wndPtr->hrgnUpdate)
 738     {
 739         INT ret;
 740         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
 741                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
 742                                       wndPtr->rectClient.right - wndPtr->rectClient.left,
 743                                       wndPtr->rectClient.bottom - wndPtr->rectClient.top);
 744         if( wndPtr->hrgnUpdate > 1 )
 745             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
 746
 747         /* do ugly coordinate translations in dce.c */
 748
 749         ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
 750         DeleteObject( hrgn );
 751         WIN_ReleaseWndPtr(wndPtr);
 752         return ret;
 753     }
 754     WIN_ReleaseWndPtr(wndPtr);
 755     return GetClipBox( hdc, &rect );
 756 }
 757
 758