2 * GDI Device Context functions
4 * Copyright 1993 Alexandre Julliard
20 extern void CLIPPING_UpdateGCRegion( DC * dc ); /* objects/clipping.c */
21 extern BOOL DCHook( HDC, WORD, DWORD, DWORD ); /* windows/dce.c */
23 /* Default DC values */
24 static const WIN_DC_INFO DC_defaultValues =
32 STOCK_BLACK_PEN, /* hPen */
33 STOCK_WHITE_BRUSH, /* hBrush */
34 STOCK_SYSTEM_FONT, /* hFont */
38 STOCK_DEFAULT_PALETTE, /* hPalette */
39 R2_COPYPEN, /* ROPmode */
40 ALTERNATE, /* polyFillMode */
41 BLACKONWHITE, /* stretchBltMode */
42 ABSOLUTE, /* relAbsMode */
43 OPAQUE, /* backgroundMode */
44 RGB( 255, 255, 255 ), /* backgroundColor */
45 RGB( 0, 0, 0 ), /* textColor */
46 0, /* backgroundPixel */
50 TA_LEFT | TA_TOP | TA_NOUPDATECP, /* textAlign */
52 0, /* breakTotalExtra */
57 MM_TEXT, /* MapMode */
72 /* ROP code to GC function conversion */
73 const int DC_XROPfunction[16] =
75 GXclear, /* R2_BLACK */
76 GXnor, /* R2_NOTMERGEPEN */
77 GXandInverted, /* R2_MASKNOTPEN */
78 GXcopyInverted, /* R2_NOTCOPYPEN */
79 GXandReverse, /* R2_MASKPENNOT */
80 GXinvert, /* R2_NOT */
81 GXxor, /* R2_XORPEN */
82 GXnand, /* R2_NOTMASKPEN */
83 GXand, /* R2_MASKPEN */
84 GXequiv, /* R2_NOTXORPEN */
86 GXorInverted, /* R2_MERGENOTPEN */
87 GXcopy, /* R2_COPYPEN */
88 GXorReverse, /* R2_MERGEPENNOT */
89 GXor, /* R2_MERGEPEN */
94 /***********************************************************************
97 * Fill the device caps structure.
99 void DC_FillDevCaps( DeviceCaps * caps )
101 caps->version = 0x300;
102 caps->technology = DT_RASDISPLAY;
103 caps->horzSize = WidthMMOfScreen(screen) * screenWidth / WidthOfScreen(screen);
104 caps->vertSize = HeightMMOfScreen(screen) * screenHeight / HeightOfScreen(screen);
105 caps->horzRes = screenWidth;
106 caps->vertRes = screenHeight;
107 caps->bitsPixel = screenDepth;
109 caps->numBrushes = 16+6; /* 16 solid + 6 hatched brushes */
110 caps->numPens = 16; /* 16 solid pens */
111 caps->numMarkers = 0;
113 caps->numColors = 100;
114 caps->pdeviceSize = 0;
115 caps->curveCaps = CC_CIRCLES | CC_PIE | CC_CHORD | CC_ELLIPSES |
116 CC_WIDE | CC_STYLED | CC_WIDESTYLED |
117 CC_INTERIORS | CC_ROUNDRECT;
118 caps->lineCaps = LC_POLYLINE | LC_MARKER | LC_POLYMARKER | LC_WIDE |
119 LC_STYLED | LC_WIDESTYLED | LC_INTERIORS;
120 caps->polygonalCaps = PC_POLYGON | PC_RECTANGLE | PC_WINDPOLYGON |
121 PC_SCANLINE | PC_WIDE | PC_STYLED |
122 PC_WIDESTYLED | PC_INTERIORS;
123 caps->textCaps = TC_OP_CHARACTER | TC_OP_STROKE | TC_CP_STROKE |
124 TC_IA_ABLE | TC_UA_ABLE | TC_SO_ABLE | TC_RA_ABLE;
125 caps->clipCaps = CP_REGION;
126 caps->rasterCaps = RC_BITBLT | RC_BANDING | RC_SCALING | RC_BITMAP64 |
127 RC_DI_BITMAP | RC_DIBTODEV | RC_BIGFONT|
128 RC_STRETCHBLT | RC_STRETCHDIB | RC_DEVBITS;
130 if( !(COLOR_GetSystemPaletteFlags() & COLOR_VIRTUAL) )
131 caps->rasterCaps |= RC_PALETTE;
133 caps->aspectX = 36; /* ?? */
134 caps->aspectY = 36; /* ?? */
136 caps->logPixelsX = (int)(caps->horzRes * 25.4 / caps->horzSize);
137 caps->logPixelsY = (int)(caps->vertRes * 25.4 / caps->vertSize);
138 caps->sizePalette = (caps->rasterCaps & RC_PALETTE)
139 ? DefaultVisual(display,DefaultScreen(display))->map_entries
141 caps->numReserved = 0;
146 /***********************************************************************
149 * Setup device-specific DC values for a newly created DC.
151 void DC_InitDC( DC* dc )
153 RealizeDefaultPalette( dc->hSelf );
154 SetTextColor( dc->hSelf, dc->w.textColor );
155 SetBkColor( dc->hSelf, dc->w.backgroundColor );
156 SelectObject( dc->hSelf, dc->w.hPen );
157 SelectObject( dc->hSelf, dc->w.hBrush );
158 SelectObject( dc->hSelf, dc->w.hFont );
159 CLIPPING_UpdateGCRegion( dc );
163 /***********************************************************************
164 * DC_SetupGCForPatBlt
166 * Setup the GC for a PatBlt operation using current brush.
167 * If fMapColors is TRUE, X pixels are mapped to Windows colors.
168 * Return FALSE if brush is BS_NULL, TRUE otherwise.
170 BOOL DC_SetupGCForPatBlt( DC * dc, GC gc, BOOL fMapColors )
176 if (dc->u.x.brush.style == BS_NULL) return FALSE;
177 if (dc->u.x.brush.pixel == -1)
179 /* Special case used for monochrome pattern brushes.
180 * We need to swap foreground and background because
181 * Windows does it the wrong way...
183 val.foreground = dc->w.backgroundPixel;
184 val.background = dc->w.textPixel;
188 val.foreground = dc->u.x.brush.pixel;
189 val.background = dc->w.backgroundPixel;
191 if (fMapColors && COLOR_PixelToPalette)
193 val.foreground = COLOR_PixelToPalette[val.foreground];
194 val.background = COLOR_PixelToPalette[val.background];
197 if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
199 val.function = DC_XROPfunction[dc->w.ROPmode-1];
200 val.fill_style = dc->u.x.brush.fillStyle;
201 switch(val.fill_style)
204 case FillOpaqueStippled:
205 if (dc->w.backgroundMode==OPAQUE) val.fill_style = FillOpaqueStippled;
206 val.stipple = dc->u.x.brush.pixmap;
211 if (fMapColors && COLOR_PixelToPalette)
215 pixmap = XCreatePixmap( display, rootWindow, 8, 8, screenDepth );
216 image = XGetImage( display, dc->u.x.brush.pixmap, 0, 0, 8, 8,
217 AllPlanes, ZPixmap );
218 for (y = 0; y < 8; y++)
219 for (x = 0; x < 8; x++)
220 XPutPixel( image, x, y,
221 COLOR_PixelToPalette[XGetPixel( image, x, y)] );
222 XPutImage( display, pixmap, gc, image, 0, 0, 0, 0, 8, 8 );
223 XDestroyImage( image );
226 else val.tile = dc->u.x.brush.pixmap;
234 val.ts_x_origin = dc->w.DCOrgX + dc->w.brushOrgX;
235 val.ts_y_origin = dc->w.DCOrgY + dc->w.brushOrgY;
236 val.fill_rule = (dc->w.polyFillMode==WINDING) ? WindingRule : EvenOddRule;
237 XChangeGC( display, gc,
238 GCFunction | GCForeground | GCBackground | GCFillStyle |
239 GCFillRule | GCTileStipXOrigin | GCTileStipYOrigin | mask,
241 if (pixmap) XFreePixmap( display, pixmap );
246 /***********************************************************************
249 * Setup dc->u.x.gc for drawing operations using current brush.
250 * Return FALSE if brush is BS_NULL, TRUE otherwise.
252 BOOL DC_SetupGCForBrush( DC * dc )
254 return DC_SetupGCForPatBlt( dc, dc->u.x.gc, FALSE );
258 /***********************************************************************
261 * Setup dc->u.x.gc for drawing operations using current pen.
262 * Return FALSE if pen is PS_NULL, TRUE otherwise.
264 BOOL DC_SetupGCForPen( DC * dc )
268 if (dc->u.x.pen.style == PS_NULL) return FALSE;
270 if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
272 if ((screenDepth <= 8) && /* FIXME: Should check for palette instead */
273 ((dc->w.ROPmode == R2_BLACK) || (dc->w.ROPmode == R2_WHITE)))
275 val.function = GXcopy;
276 val.foreground = COLOR_ToPhysical( NULL, (dc->w.ROPmode == R2_BLACK) ?
277 RGB(0,0,0) : RGB(255,255,255) );
281 val.function = DC_XROPfunction[dc->w.ROPmode-1];
282 val.foreground = dc->u.x.pen.pixel;
284 val.background = dc->w.backgroundPixel;
285 val.fill_style = FillSolid;
286 if ((dc->u.x.pen.style!=PS_SOLID) && (dc->u.x.pen.style!=PS_INSIDEFRAME))
288 XSetDashes( display, dc->u.x.gc, 0,
289 dc->u.x.pen.dashes, dc->u.x.pen.dash_len );
290 val.line_style = (dc->w.backgroundMode == OPAQUE) ?
291 LineDoubleDash : LineOnOffDash;
293 else val.line_style = LineSolid;
294 val.line_width = dc->u.x.pen.width;
295 val.cap_style = CapRound;
296 val.join_style = JoinBevel;
297 XChangeGC( display, dc->u.x.gc,
298 GCFunction | GCForeground | GCBackground | GCLineWidth |
299 GCLineStyle | GCCapStyle | GCJoinStyle | GCFillStyle, &val );
304 /***********************************************************************
307 * Setup dc->u.x.gc for text drawing operations.
308 * Return FALSE if the font is null, TRUE otherwise.
310 BOOL DC_SetupGCForText( DC * dc )
314 if (!dc->u.x.font.fstruct)
316 fprintf( stderr, "DC_SetupGCForText: fstruct is NULL. Please report this\n" );
320 if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
322 val.function = GXcopy; /* Text is always GXcopy */
323 val.foreground = dc->w.textPixel;
324 val.background = dc->w.backgroundPixel;
325 val.fill_style = FillSolid;
326 val.font = dc->u.x.font.fstruct->fid;
327 XChangeGC( display, dc->u.x.gc,
328 GCFunction | GCForeground | GCBackground | GCFillStyle |
334 /***********************************************************************
337 BOOL DC_CallHookProc(DC* dc, WORD code, LPARAM lParam)
340 FARPROC16 ptr = GDI_GetDefDCHook();
342 dprintf_dc(stddeb,"CallDCHook: code %04x\n", code);
344 /* if 16-bit callback is, in fact, a thunk to DCHook simply call DCHook */
346 if( dc->hookProc && !(dc->w.flags & (DC_SAVED | DC_MEMORY)) )
347 bRet = (dc->hookProc == ptr) ?
348 DCHook(dc->hSelf, code, dc->dwHookData, lParam):
349 CallDCHookProc(dc->hookProc, dc->hSelf, code, dc->dwHookData, lParam);
354 /***********************************************************************
355 * GetDCState (GDI.179)
357 HDC GetDCState( HDC hdc )
362 if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
363 if (!(handle = GDI_AllocObject( sizeof(DC), DC_MAGIC ))) return 0;
364 newdc = (DC *) GDI_HEAP_LIN_ADDR( handle );
366 dprintf_dc(stddeb, "GetDCState(%04x): returning %04x\n", hdc, handle );
368 memset( &newdc->u.x, 0, sizeof(newdc->u.x) );
369 memcpy( &newdc->w, &dc->w, sizeof(dc->w) );
370 memcpy( &newdc->u.x.pen, &dc->u.x.pen, sizeof(dc->u.x.pen) );
372 newdc->hSelf = (HDC)handle;
373 newdc->saveLevel = 0;
374 newdc->w.flags |= DC_SAVED;
376 newdc->w.hGCClipRgn = 0;
377 newdc->w.hVisRgn = CreateRectRgn( 0, 0, 0, 0 );
378 CombineRgn( newdc->w.hVisRgn, dc->w.hVisRgn, 0, RGN_COPY );
381 newdc->w.hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
382 CombineRgn( newdc->w.hClipRgn, dc->w.hClipRgn, 0, RGN_COPY );
388 /***********************************************************************
389 * SetDCState (GDI.180)
391 void SetDCState( HDC hdc, HDC hdcs )
394 HRGN hVisRgn, hClipRgn, hGCClipRgn;
398 if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
399 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) return;
400 if (!dcs->w.flags & DC_SAVED) return;
401 dprintf_dc(stddeb, "SetDCState: %04x %04x\n", hdc, hdcs );
403 /* Save the regions, font & brush before overwriting everything */
404 hVisRgn = dc->w.hVisRgn;
405 hClipRgn = dc->w.hClipRgn;
406 hGCClipRgn = dc->w.hGCClipRgn;
408 hbrush = dc->w.hBrush;
409 memcpy( &dc->w, &dcs->w, sizeof(dc->w) );
410 memcpy( &dc->u.x.pen, &dcs->u.x.pen, sizeof(dc->u.x.pen) );
411 dc->w.flags &= ~DC_SAVED;
413 /* Restore the regions */
414 dc->w.hVisRgn = hVisRgn;
415 dc->w.hClipRgn = hClipRgn;
416 dc->w.hGCClipRgn = hGCClipRgn;
418 dc->w.hBrush = hbrush;
419 CombineRgn( dc->w.hVisRgn, dcs->w.hVisRgn, 0, RGN_COPY );
420 SelectClipRgn( hdc, dcs->w.hClipRgn );
422 SelectObject( hdc, dcs->w.hBrush );
423 SelectObject( hdc, dcs->w.hFont );
427 /***********************************************************************
430 int SaveDC( HDC hdc )
435 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
438 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
440 MF_MetaParam0(dc, META_SAVEDC);
443 if (!(hdcs = GetDCState( hdc ))) return 0;
444 dcs = (DC *) GDI_HEAP_LIN_ADDR( hdcs );
445 dcs->header.hNext = dc->header.hNext;
446 dc->header.hNext = hdcs;
447 dprintf_dc(stddeb, "SaveDC(%04x): returning %d\n", hdc, dc->saveLevel+1 );
448 return ++dc->saveLevel;
452 /***********************************************************************
455 BOOL RestoreDC( HDC hdc, short level )
459 dprintf_dc(stddeb, "RestoreDC: %04x %d\n", hdc, level );
460 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
463 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
464 if (!dc) return FALSE;
465 if (level != -1) return FALSE;
466 MF_MetaParam1(dc, META_RESTOREDC, level);
469 if (level == -1) level = dc->saveLevel;
470 if ((level < 1) || (level > (short)dc->saveLevel)) return FALSE;
472 while ((short)dc->saveLevel >= level)
474 HDC hdcs = dc->header.hNext;
475 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) return FALSE;
476 dc->header.hNext = dcs->header.hNext;
477 if ((short)--dc->saveLevel < level) SetDCState( hdc, hdcs );
484 /***********************************************************************
487 HDC CreateDC( LPCSTR driver, LPCSTR device, LPCSTR output, const DEVMODE* initData )
491 const DC_FUNCTIONS *funcs;
493 if (!(funcs = DRIVER_FindDriver( driver ))) return 0;
495 handle = GDI_AllocObject( sizeof(DC), DC_MAGIC );
496 if (!handle) return 0;
497 dc = (DC *) GDI_HEAP_LIN_ADDR( handle );
499 dprintf_dc(stddeb, "CreateDC(%s %s %s): returning %04x\n",
500 driver, device, output, handle );
507 dc->hookProc = (SEGPTR)0;
509 memcpy( &dc->w, &DC_defaultValues, sizeof(DC_defaultValues) );
512 if (dc->funcs->pCreateDC &&
513 !dc->funcs->pCreateDC( dc, driver, device, output, initData ))
515 dprintf_dc( stddeb, "CreateDC: creation aborted by device\n" );
516 GDI_HEAP_FREE( handle );
526 /***********************************************************************
529 HDC CreateIC( LPCSTR driver, LPCSTR device, LPCSTR output, const DEVMODE* initData )
531 /* Nothing special yet for ICs */
532 return CreateDC( driver, device, output, initData );
536 /***********************************************************************
537 * CreateCompatibleDC (GDI.52)
539 HDC CreateCompatibleDC( HDC hdc )
544 const DC_FUNCTIONS *funcs;
546 if ((origDC = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC ))) funcs = origDC->funcs;
547 else funcs = DRIVER_FindDriver( "DISPLAY" );
548 if (!funcs) return 0;
550 handle = GDI_AllocObject( sizeof(DC), DC_MAGIC );
551 if (!handle) return 0;
552 dc = (DC *) GDI_HEAP_LIN_ADDR( handle );
554 dprintf_dc(stddeb, "CreateCompatibleDC(%04x): returning %04x\n", hdc, handle );
556 /* Create default bitmap */
557 if (!(hbitmap = CreateBitmap( 1, 1, 1, 1, NULL )))
559 GDI_HEAP_FREE( handle );
563 memcpy( &dc->w, &DC_defaultValues, sizeof(DC_defaultValues) );
570 dc->hookProc = (SEGPTR)0;
571 dc->w.flags = DC_MEMORY;
572 dc->w.bitsPerPixel = 1;
573 dc->w.hBitmap = hbitmap;
574 dc->w.hFirstBitmap = hbitmap;
576 if (dc->funcs->pCreateDC &&
577 !dc->funcs->pCreateDC( dc, NULL, NULL, NULL, NULL ))
579 dprintf_dc( stddeb, "CreateDC: creation aborted by device\n" );
580 DeleteObject( hbitmap );
581 GDI_HEAP_FREE( handle );
591 /***********************************************************************
594 BOOL DeleteDC( HDC hdc )
596 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
597 if (!dc) return FALSE;
599 dprintf_dc(stddeb, "DeleteDC: %04x\n", hdc );
601 while (dc->saveLevel)
604 HDC hdcs = dc->header.hNext;
605 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
606 dc->header.hNext = dcs->header.hNext;
611 if (!(dc->w.flags & DC_SAVED))
613 SelectObject( hdc, STOCK_BLACK_PEN );
614 SelectObject( hdc, STOCK_WHITE_BRUSH );
615 SelectObject( hdc, STOCK_SYSTEM_FONT );
616 if (dc->w.flags & DC_MEMORY) DeleteObject( dc->w.hFirstBitmap );
617 if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc);
620 if (dc->w.hClipRgn) DeleteObject( dc->w.hClipRgn );
621 if (dc->w.hVisRgn) DeleteObject( dc->w.hVisRgn );
622 if (dc->w.hGCClipRgn) DeleteObject( dc->w.hGCClipRgn );
624 return GDI_FreeObject( hdc );
628 /***********************************************************************
631 HDC ResetDC( HDC hdc, /* DEVMODE */ void *devmode )
633 fprintf( stderr, "ResetDC: empty stub!\n" );
638 /***********************************************************************
639 * GetDeviceCaps (GDI.80)
641 int GetDeviceCaps( HDC hdc, WORD cap )
643 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
646 if (cap > sizeof(DeviceCaps)-sizeof(WORD)) return 0;
648 dprintf_dc(stddeb, "GetDeviceCaps(%04x,%d): returning %d\n",
649 hdc, cap, *(WORD *)(((char *)dc->w.devCaps) + cap) );
650 return *(WORD *)(((char *)dc->w.devCaps) + cap);
654 /***********************************************************************
655 * SetBkColor (GDI.1) (GDI32.305)
657 COLORREF SetBkColor( HDC32 hdc, COLORREF color )
660 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
663 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
664 if (!dc) return 0x80000000;
665 MF_MetaParam2(dc, META_SETBKCOLOR, HIWORD(color), LOWORD(color));
669 oldColor = dc->w.backgroundColor;
670 dc->w.backgroundColor = color;
671 dc->w.backgroundPixel = COLOR_ToPhysical( dc, color );
676 /***********************************************************************
677 * SetTextColor (GDI.9) (GDI32.338)
679 COLORREF SetTextColor( HDC32 hdc, COLORREF color )
682 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
685 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
686 if (!dc) return 0x80000000;
687 MF_MetaParam2(dc, META_SETTEXTCOLOR, HIWORD(color), LOWORD(color));
691 oldColor = dc->w.textColor;
692 dc->w.textColor = color;
693 dc->w.textPixel = COLOR_ToPhysical( dc, color );
698 /***********************************************************************
699 * SetTextAlign (GDI.346)
701 WORD SetTextAlign( HDC hdc, WORD textAlign )
704 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
707 if (!(dc = (DC *)GDI_GetObjPtr( hdc, METAFILE_DC_MAGIC ))) return 0;
708 MF_MetaParam1( dc, META_SETTEXTALIGN, textAlign );
711 prevAlign = dc->w.textAlign;
712 dc->w.textAlign = textAlign;
717 /***********************************************************************
720 DWORD GetDCOrg( HDC hdc )
723 int x, y, w, h, border, depth;
725 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
727 if (dc->w.flags & DC_MEMORY) return 0;
728 XGetGeometry( display, dc->u.x.drawable, &root,
729 &x, &y, &w, &h, &border, &depth );
730 return MAKELONG( dc->w.DCOrgX + (WORD)x, dc->w.DCOrgY + (WORD)y );
734 /***********************************************************************
737 DWORD SetDCOrg( HDC hdc, short x, short y )
740 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
742 prevOrg = dc->w.DCOrgX | (dc->w.DCOrgY << 16);
749 /***********************************************************************
750 * SetDCHook (GDI.190)
752 BOOL SetDCHook( HDC hDC, FARPROC16 hookProc, DWORD dwHookData )
754 DC *dc = (DC *)GDI_GetObjPtr( hDC, DC_MAGIC );
756 dprintf_dc( stddeb, "SetDCHook: hookProc %08x, default is %08x\n",
757 (unsigned)hookProc,(unsigned)GDI_GetDefDCHook() );
759 if (!dc) return FALSE;
760 dc->hookProc = hookProc;
761 dc->dwHookData = dwHookData;
766 /***********************************************************************
767 * GetDCHook (GDI.191)
769 DWORD GetDCHook( HDC hDC, FARPROC16 *phookProc )
771 DC *dc = (DC *)GDI_GetObjPtr( hDC, DC_MAGIC );
773 *phookProc = dc->hookProc;
774 return dc->dwHookData;
778 /***********************************************************************
779 * SetHookFlags (GDI.192)
781 WORD SetHookFlags(HDC hDC, WORD flags)
783 DC* dc = (DC*)GDI_GetObjPtr( hDC, DC_MAGIC );
787 WORD wRet = dc->w.flags & DC_DIRTY;
789 /* "Undocumented Windows" info is slightly
793 dprintf_dc(stddeb,"SetHookFlags: hDC %04x, flags %04x\n",hDC,flags);
795 if( flags & DCHF_INVALIDATEVISRGN )
796 dc->w.flags |= DC_DIRTY;
797 else if( flags & DCHF_VALIDATEVISRGN || !flags )
798 dc->w.flags &= ~DC_DIRTY;