More general approach to file descriptor types and flags.
[wine.git] / objects / dc.c
blobb06de93473e4ef5b0ad5dde09f61c6f3bcd008b2
1 /*
2 * GDI Device Context functions
4 * Copyright 1993 Alexandre Julliard
6 */
8 #include "config.h"
10 #include <stdlib.h>
11 #include <string.h>
12 #include "gdi.h"
13 #include "heap.h"
14 #include "debugtools.h"
15 #include "font.h"
16 #include "winerror.h"
17 #include "windef.h"
18 #include "wingdi.h"
19 #include "wine/winuser16.h"
21 DEFAULT_DEBUG_CHANNEL(dc);
23 /* ### start build ### */
24 extern WORD CALLBACK GDI_CallTo16_word_wwll(FARPROC16,WORD,WORD,LONG,LONG);
25 /* ### stop build ### */
27 /***********************************************************************
28 * DC_AllocDC
30 DC *DC_AllocDC( const DC_FUNCTIONS *funcs )
32 HDC hdc;
33 DC *dc;
35 if (!(dc = GDI_AllocObject( sizeof(*dc), DC_MAGIC, &hdc ))) return NULL;
37 dc->hSelf = hdc;
38 dc->funcs = funcs;
39 dc->physDev = NULL;
40 dc->saveLevel = 0;
41 dc->dwHookData = 0;
42 dc->hookProc = NULL;
43 dc->hookThunk = NULL;
44 dc->wndOrgX = 0;
45 dc->wndOrgY = 0;
46 dc->wndExtX = 1;
47 dc->wndExtY = 1;
48 dc->vportOrgX = 0;
49 dc->vportOrgY = 0;
50 dc->vportExtX = 1;
51 dc->vportExtY = 1;
52 dc->flags = 0;
53 dc->hClipRgn = 0;
54 dc->hVisRgn = 0;
55 dc->hGCClipRgn = 0;
56 dc->hPen = GetStockObject( BLACK_PEN );
57 dc->hBrush = GetStockObject( WHITE_BRUSH );
58 dc->hFont = GetStockObject( SYSTEM_FONT );
59 dc->hBitmap = 0;
60 dc->hDevice = 0;
61 dc->hPalette = GetStockObject( DEFAULT_PALETTE );
62 dc->gdiFont = 0;
63 dc->ROPmode = R2_COPYPEN;
64 dc->polyFillMode = ALTERNATE;
65 dc->stretchBltMode = BLACKONWHITE;
66 dc->relAbsMode = ABSOLUTE;
67 dc->backgroundMode = OPAQUE;
68 dc->backgroundColor = RGB( 255, 255, 255 );
69 dc->textColor = RGB( 0, 0, 0 );
70 dc->brushOrgX = 0;
71 dc->brushOrgY = 0;
72 dc->textAlign = TA_LEFT | TA_TOP | TA_NOUPDATECP;
73 dc->charExtra = 0;
74 dc->breakTotalExtra = 0;
75 dc->breakCount = 0;
76 dc->breakExtra = 0;
77 dc->breakRem = 0;
78 dc->totalExtent.left = 0;
79 dc->totalExtent.top = 0;
80 dc->totalExtent.right = 0;
81 dc->totalExtent.bottom = 0;
82 dc->bitsPerPixel = 1;
83 dc->MapMode = MM_TEXT;
84 dc->GraphicsMode = GM_COMPATIBLE;
85 dc->DCOrgX = 0;
86 dc->DCOrgY = 0;
87 dc->pAbortProc = NULL;
88 dc->CursPosX = 0;
89 dc->CursPosY = 0;
90 dc->ArcDirection = AD_COUNTERCLOCKWISE;
91 dc->xformWorld2Wnd.eM11 = 1.0f;
92 dc->xformWorld2Wnd.eM12 = 0.0f;
93 dc->xformWorld2Wnd.eM21 = 0.0f;
94 dc->xformWorld2Wnd.eM22 = 1.0f;
95 dc->xformWorld2Wnd.eDx = 0.0f;
96 dc->xformWorld2Wnd.eDy = 0.0f;
97 dc->xformWorld2Vport = dc->xformWorld2Wnd;
98 dc->xformVport2World = dc->xformWorld2Wnd;
99 dc->vport2WorldValid = TRUE;
100 PATH_InitGdiPath(&dc->path);
101 return dc;
106 /***********************************************************************
107 * DC_GetDCPtr
109 DC *DC_GetDCPtr( HDC hdc )
111 GDIOBJHDR *ptr = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
112 if (!ptr) return NULL;
113 if ((GDIMAGIC(ptr->wMagic) == DC_MAGIC) ||
114 (GDIMAGIC(ptr->wMagic) == METAFILE_DC_MAGIC) ||
115 (GDIMAGIC(ptr->wMagic) == ENHMETAFILE_DC_MAGIC))
116 return (DC *)ptr;
117 GDI_ReleaseObj( hdc );
118 SetLastError( ERROR_INVALID_HANDLE );
119 return NULL;
122 /***********************************************************************
123 * DC_GetDCUpdate
125 * Retrieve a DC ptr while making sure the visRgn is updated.
126 * This function may call up to USER so the GDI lock should _not_
127 * be held when calling it.
129 DC *DC_GetDCUpdate( HDC hdc )
131 DC *dc = DC_GetDCPtr( hdc );
132 if (!dc) return NULL;
133 while (dc->flags & DC_DIRTY)
135 dc->flags &= ~DC_DIRTY;
136 if (!(dc->flags & (DC_SAVED | DC_MEMORY)))
138 DCHOOKPROC proc = dc->hookThunk;
139 if (proc)
141 DWORD data = dc->dwHookData;
142 GDI_ReleaseObj( hdc );
143 proc( hdc, DCHC_INVALIDVISRGN, data, 0 );
144 if (!(dc = DC_GetDCPtr( hdc ))) break;
145 /* otherwise restart the loop in case it became dirty again in the meantime */
149 return dc;
152 /***********************************************************************
153 * DC_InitDC
155 * Setup device-specific DC values for a newly created DC.
157 void DC_InitDC( DC* dc )
159 RealizeDefaultPalette16( dc->hSelf );
160 SetTextColor( dc->hSelf, dc->textColor );
161 SetBkColor( dc->hSelf, dc->backgroundColor );
162 SelectObject( dc->hSelf, dc->hPen );
163 SelectObject( dc->hSelf, dc->hBrush );
164 SelectObject( dc->hSelf, dc->hFont );
165 CLIPPING_UpdateGCRegion( dc );
169 /***********************************************************************
170 * DC_InvertXform
172 * Computes the inverse of the transformation xformSrc and stores it to
173 * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
174 * is singular.
176 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
178 FLOAT determinant;
180 determinant = xformSrc->eM11*xformSrc->eM22 -
181 xformSrc->eM12*xformSrc->eM21;
182 if (determinant > -1e-12 && determinant < 1e-12)
183 return FALSE;
185 xformDest->eM11 = xformSrc->eM22 / determinant;
186 xformDest->eM12 = -xformSrc->eM12 / determinant;
187 xformDest->eM21 = -xformSrc->eM21 / determinant;
188 xformDest->eM22 = xformSrc->eM11 / determinant;
189 xformDest->eDx = -xformSrc->eDx * xformDest->eM11 -
190 xformSrc->eDy * xformDest->eM21;
191 xformDest->eDy = -xformSrc->eDx * xformDest->eM12 -
192 xformSrc->eDy * xformDest->eM22;
194 return TRUE;
198 /***********************************************************************
199 * DC_UpdateXforms
201 * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
202 * fields of the specified DC by creating a transformation that
203 * represents the current mapping mode and combining it with the DC's
204 * world transform. This function should be called whenever the
205 * parameters associated with the mapping mode (window and viewport
206 * extents and origins) or the world transform change.
208 void DC_UpdateXforms( DC *dc )
210 XFORM xformWnd2Vport;
211 FLOAT scaleX, scaleY;
213 /* Construct a transformation to do the window-to-viewport conversion */
214 scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
215 scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
216 xformWnd2Vport.eM11 = scaleX;
217 xformWnd2Vport.eM12 = 0.0;
218 xformWnd2Vport.eM21 = 0.0;
219 xformWnd2Vport.eM22 = scaleY;
220 xformWnd2Vport.eDx = (FLOAT)dc->vportOrgX -
221 scaleX * (FLOAT)dc->wndOrgX;
222 xformWnd2Vport.eDy = (FLOAT)dc->vportOrgY -
223 scaleY * (FLOAT)dc->wndOrgY;
225 /* Combine with the world transformation */
226 CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
227 &xformWnd2Vport );
229 /* Create inverse of world-to-viewport transformation */
230 dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
231 &dc->xformVport2World );
235 /***********************************************************************
236 * GetDCState (GDI.179)
238 HDC16 WINAPI GetDCState16( HDC16 hdc )
240 DC * newdc, * dc;
241 HGDIOBJ handle;
243 if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
244 if (!(newdc = GDI_AllocObject( sizeof(DC), DC_MAGIC, &handle )))
246 GDI_ReleaseObj( hdc );
247 return 0;
249 TRACE("(%04x): returning %04x\n", hdc, handle );
251 newdc->flags = dc->flags | DC_SAVED;
252 newdc->hPen = dc->hPen;
253 newdc->hBrush = dc->hBrush;
254 newdc->hFont = dc->hFont;
255 newdc->hBitmap = dc->hBitmap;
256 newdc->hDevice = dc->hDevice;
257 newdc->hPalette = dc->hPalette;
258 newdc->totalExtent = dc->totalExtent;
259 newdc->bitsPerPixel = dc->bitsPerPixel;
260 newdc->ROPmode = dc->ROPmode;
261 newdc->polyFillMode = dc->polyFillMode;
262 newdc->stretchBltMode = dc->stretchBltMode;
263 newdc->relAbsMode = dc->relAbsMode;
264 newdc->backgroundMode = dc->backgroundMode;
265 newdc->backgroundColor = dc->backgroundColor;
266 newdc->textColor = dc->textColor;
267 newdc->brushOrgX = dc->brushOrgX;
268 newdc->brushOrgY = dc->brushOrgY;
269 newdc->textAlign = dc->textAlign;
270 newdc->charExtra = dc->charExtra;
271 newdc->breakTotalExtra = dc->breakTotalExtra;
272 newdc->breakCount = dc->breakCount;
273 newdc->breakExtra = dc->breakExtra;
274 newdc->breakRem = dc->breakRem;
275 newdc->MapMode = dc->MapMode;
276 newdc->GraphicsMode = dc->GraphicsMode;
277 #if 0
278 /* Apparently, the DC origin is not changed by [GS]etDCState */
279 newdc->DCOrgX = dc->DCOrgX;
280 newdc->DCOrgY = dc->DCOrgY;
281 #endif
282 newdc->CursPosX = dc->CursPosX;
283 newdc->CursPosY = dc->CursPosY;
284 newdc->ArcDirection = dc->ArcDirection;
285 newdc->xformWorld2Wnd = dc->xformWorld2Wnd;
286 newdc->xformWorld2Vport = dc->xformWorld2Vport;
287 newdc->xformVport2World = dc->xformVport2World;
288 newdc->vport2WorldValid = dc->vport2WorldValid;
289 newdc->wndOrgX = dc->wndOrgX;
290 newdc->wndOrgY = dc->wndOrgY;
291 newdc->wndExtX = dc->wndExtX;
292 newdc->wndExtY = dc->wndExtY;
293 newdc->vportOrgX = dc->vportOrgX;
294 newdc->vportOrgY = dc->vportOrgY;
295 newdc->vportExtX = dc->vportExtX;
296 newdc->vportExtY = dc->vportExtY;
298 newdc->hSelf = (HDC)handle;
299 newdc->saveLevel = 0;
301 PATH_InitGdiPath( &newdc->path );
303 newdc->pAbortProc = NULL;
304 newdc->hookThunk = NULL;
305 newdc->hookProc = 0;
307 /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
309 newdc->hGCClipRgn = newdc->hVisRgn = 0;
310 if (dc->hClipRgn)
312 newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
313 CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
315 else
316 newdc->hClipRgn = 0;
318 if(dc->gdiFont) {
319 WineEngAddRefFont(dc->gdiFont);
320 newdc->gdiFont = dc->gdiFont;
321 } else
322 newdc->gdiFont = 0;
324 GDI_ReleaseObj( handle );
325 GDI_ReleaseObj( hdc );
326 return handle;
330 /***********************************************************************
331 * SetDCState (GDI.180)
333 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
335 DC *dc, *dcs;
337 if (!(dc = GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
338 if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC )))
340 GDI_ReleaseObj( hdc );
341 return;
343 if (!dcs->flags & DC_SAVED)
345 GDI_ReleaseObj( hdc );
346 GDI_ReleaseObj( hdcs );
347 return;
349 TRACE("%04x %04x\n", hdc, hdcs );
351 dc->flags = dcs->flags & ~DC_SAVED;
352 dc->hDevice = dcs->hDevice;
353 dc->totalExtent = dcs->totalExtent;
354 dc->ROPmode = dcs->ROPmode;
355 dc->polyFillMode = dcs->polyFillMode;
356 dc->stretchBltMode = dcs->stretchBltMode;
357 dc->relAbsMode = dcs->relAbsMode;
358 dc->backgroundMode = dcs->backgroundMode;
359 dc->backgroundColor = dcs->backgroundColor;
360 dc->textColor = dcs->textColor;
361 dc->brushOrgX = dcs->brushOrgX;
362 dc->brushOrgY = dcs->brushOrgY;
363 dc->textAlign = dcs->textAlign;
364 dc->charExtra = dcs->charExtra;
365 dc->breakTotalExtra = dcs->breakTotalExtra;
366 dc->breakCount = dcs->breakCount;
367 dc->breakExtra = dcs->breakExtra;
368 dc->breakRem = dcs->breakRem;
369 dc->MapMode = dcs->MapMode;
370 dc->GraphicsMode = dcs->GraphicsMode;
371 #if 0
372 /* Apparently, the DC origin is not changed by [GS]etDCState */
373 dc->DCOrgX = dcs->DCOrgX;
374 dc->DCOrgY = dcs->DCOrgY;
375 #endif
376 dc->CursPosX = dcs->CursPosX;
377 dc->CursPosY = dcs->CursPosY;
378 dc->ArcDirection = dcs->ArcDirection;
379 dc->xformWorld2Wnd = dcs->xformWorld2Wnd;
380 dc->xformWorld2Vport = dcs->xformWorld2Vport;
381 dc->xformVport2World = dcs->xformVport2World;
382 dc->vport2WorldValid = dcs->vport2WorldValid;
384 dc->wndOrgX = dcs->wndOrgX;
385 dc->wndOrgY = dcs->wndOrgY;
386 dc->wndExtX = dcs->wndExtX;
387 dc->wndExtY = dcs->wndExtY;
388 dc->vportOrgX = dcs->vportOrgX;
389 dc->vportOrgY = dcs->vportOrgY;
390 dc->vportExtX = dcs->vportExtX;
391 dc->vportExtY = dcs->vportExtY;
393 if (!(dc->flags & DC_MEMORY)) dc->bitsPerPixel = dcs->bitsPerPixel;
395 if (dcs->hClipRgn)
397 if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
398 CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
400 else
402 if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
403 dc->hClipRgn = 0;
405 CLIPPING_UpdateGCRegion( dc );
407 SelectObject( hdc, dcs->hBitmap );
408 SelectObject( hdc, dcs->hBrush );
409 SelectObject( hdc, dcs->hFont );
410 SelectObject( hdc, dcs->hPen );
411 SetBkColor( hdc, dcs->backgroundColor);
412 SetTextColor( hdc, dcs->textColor);
413 GDISelectPalette16( hdc, dcs->hPalette, FALSE );
414 GDI_ReleaseObj( hdcs );
415 GDI_ReleaseObj( hdc );
419 /***********************************************************************
420 * SaveDC (GDI.30)
422 INT16 WINAPI SaveDC16( HDC16 hdc )
424 return (INT16)SaveDC( hdc );
428 /***********************************************************************
429 * SaveDC (GDI32.@)
431 INT WINAPI SaveDC( HDC hdc )
433 HDC hdcs;
434 DC * dc, * dcs;
435 INT ret;
437 dc = DC_GetDCUpdate( hdc );
438 if (!dc) return 0;
440 if(dc->funcs->pSaveDC)
442 ret = dc->funcs->pSaveDC( dc );
443 GDI_ReleaseObj( hdc );
444 return ret;
447 if (!(hdcs = GetDCState16( hdc )))
449 GDI_ReleaseObj( hdc );
450 return 0;
452 dcs = GDI_GetObjPtr( hdcs, DC_MAGIC );
454 /* Copy path. The reason why path saving / restoring is in SaveDC/
455 * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
456 * functions are only in Win16 (which doesn't have paths) and that
457 * SetDCState doesn't allow us to signal an error (which can happen
458 * when copying paths).
460 if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
462 GDI_ReleaseObj( hdc );
463 GDI_ReleaseObj( hdcs );
464 DeleteDC( hdcs );
465 return 0;
468 dcs->header.hNext = dc->header.hNext;
469 dc->header.hNext = hdcs;
470 TRACE("(%04x): returning %d\n", hdc, dc->saveLevel+1 );
471 ret = ++dc->saveLevel;
472 GDI_ReleaseObj( hdcs );
473 GDI_ReleaseObj( hdc );
474 return ret;
478 /***********************************************************************
479 * RestoreDC (GDI.39)
481 BOOL16 WINAPI RestoreDC16( HDC16 hdc, INT16 level )
483 return RestoreDC( hdc, level );
487 /***********************************************************************
488 * RestoreDC (GDI32.@)
490 BOOL WINAPI RestoreDC( HDC hdc, INT level )
492 DC * dc, * dcs;
493 BOOL success;
495 TRACE("%04x %d\n", hdc, level );
496 dc = DC_GetDCPtr( hdc );
497 if(!dc) return FALSE;
498 if(dc->funcs->pRestoreDC)
500 success = dc->funcs->pRestoreDC( dc, level );
501 GDI_ReleaseObj( hdc );
502 return success;
505 if (level == -1) level = dc->saveLevel;
506 if ((level < 1)
507 /* This pair of checks disagrees with MSDN "Platform SDK:
508 Windows GDI" July 2000 which says all negative values
509 for level will be interpreted as an instance relative
510 to the current state. Restricting it to just -1 does
511 not satisfy this */
512 || (level > dc->saveLevel))
514 GDI_ReleaseObj( hdc );
515 return FALSE;
518 success=TRUE;
519 while (dc->saveLevel >= level)
521 HDC16 hdcs = dc->header.hNext;
522 if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC )))
524 GDI_ReleaseObj( hdc );
525 return FALSE;
527 dc->header.hNext = dcs->header.hNext;
528 if (--dc->saveLevel < level)
530 SetDCState16( hdc, hdcs );
531 if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
532 /* FIXME: This might not be quite right, since we're
533 * returning FALSE but still destroying the saved DC state */
534 success=FALSE;
536 GDI_ReleaseObj( hdcs );
537 GDI_ReleaseObj( hdc );
538 DeleteDC( hdcs );
539 if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
541 GDI_ReleaseObj( hdc );
542 return success;
546 /***********************************************************************
547 * CreateDC (GDI.53)
549 HDC16 WINAPI CreateDC16( LPCSTR driver, LPCSTR device, LPCSTR output,
550 const DEVMODEA *initData )
552 return CreateDCA( driver, device, output, initData );
555 /***********************************************************************
556 * CreateDCA (GDI32.@)
558 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
559 const DEVMODEA *initData )
561 HDC hdc;
562 DC * dc;
563 const DC_FUNCTIONS *funcs;
564 char buf[300];
566 GDI_CheckNotLock();
568 if (!device || !DRIVER_GetDriverName( device, buf, sizeof(buf) ))
569 strcpy(buf, driver);
571 if (!(funcs = DRIVER_load_driver( buf )))
573 ERR( "no driver found for %s\n", buf );
574 return 0;
576 if (!(dc = DC_AllocDC( funcs )))
578 DRIVER_release_driver( funcs );
579 return 0;
582 dc->flags = 0;
584 TRACE("(driver=%s, device=%s, output=%s): returning %04x\n",
585 debugstr_a(driver), debugstr_a(device), debugstr_a(output), dc->hSelf );
587 if (dc->funcs->pCreateDC &&
588 !dc->funcs->pCreateDC( dc, buf, device, output, initData ))
590 WARN("creation aborted by device\n" );
591 GDI_FreeObject( dc->hSelf, dc );
592 DRIVER_release_driver( funcs );
593 return 0;
596 DC_InitDC( dc );
597 hdc = dc->hSelf;
598 GDI_ReleaseObj( hdc );
599 return hdc;
603 /***********************************************************************
604 * CreateDCW (GDI32.@)
606 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
607 const DEVMODEW *initData )
609 LPSTR driverA = HEAP_strdupWtoA( GetProcessHeap(), 0, driver );
610 LPSTR deviceA = HEAP_strdupWtoA( GetProcessHeap(), 0, device );
611 LPSTR outputA = HEAP_strdupWtoA( GetProcessHeap(), 0, output );
612 HDC res = CreateDCA( driverA, deviceA, outputA,
613 (const DEVMODEA *)initData /*FIXME*/ );
614 HeapFree( GetProcessHeap(), 0, driverA );
615 HeapFree( GetProcessHeap(), 0, deviceA );
616 HeapFree( GetProcessHeap(), 0, outputA );
617 return res;
621 /***********************************************************************
622 * CreateIC (GDI.153)
624 HDC16 WINAPI CreateIC16( LPCSTR driver, LPCSTR device, LPCSTR output,
625 const DEVMODEA* initData )
627 /* Nothing special yet for ICs */
628 return CreateDC16( driver, device, output, initData );
632 /***********************************************************************
633 * CreateICA (GDI32.@)
635 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
636 const DEVMODEA* initData )
638 /* Nothing special yet for ICs */
639 return CreateDCA( driver, device, output, initData );
643 /***********************************************************************
644 * CreateICW (GDI32.@)
646 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
647 const DEVMODEW* initData )
649 /* Nothing special yet for ICs */
650 return CreateDCW( driver, device, output, initData );
654 /***********************************************************************
655 * CreateCompatibleDC (GDI.52)
657 HDC16 WINAPI CreateCompatibleDC16( HDC16 hdc )
659 return (HDC16)CreateCompatibleDC( hdc );
663 /***********************************************************************
664 * CreateCompatibleDC (GDI32.@)
666 HDC WINAPI CreateCompatibleDC( HDC hdc )
668 DC *dc, *origDC;
669 const DC_FUNCTIONS *funcs;
671 GDI_CheckNotLock();
673 if ((origDC = GDI_GetObjPtr( hdc, DC_MAGIC )))
675 funcs = origDC->funcs;
676 GDI_ReleaseObj( hdc ); /* can't hold the lock while loading the driver */
677 funcs = DRIVER_get_driver( funcs );
679 else funcs = DRIVER_load_driver( "DISPLAY" );
681 if (!funcs) return 0;
683 if (!(dc = DC_AllocDC( funcs )))
685 DRIVER_release_driver( funcs );
686 return 0;
689 TRACE("(%04x): returning %04x\n",
690 hdc, dc->hSelf );
692 dc->flags = DC_MEMORY;
693 dc->bitsPerPixel = 1;
694 dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
696 /* Copy the driver-specific physical device info into
697 * the new DC. The driver may use this read-only info
698 * while creating the compatible DC below. */
699 if ((origDC = GDI_GetObjPtr( hdc, DC_MAGIC ))) dc->physDev = origDC->physDev;
701 if (dc->funcs->pCreateDC &&
702 !dc->funcs->pCreateDC( dc, NULL, NULL, NULL, NULL ))
704 WARN("creation aborted by device\n");
705 GDI_FreeObject( dc->hSelf, dc );
706 if (origDC) GDI_ReleaseObj( hdc );
707 DRIVER_release_driver( funcs );
708 return 0;
711 DC_InitDC( dc );
712 GDI_ReleaseObj( dc->hSelf );
713 if (origDC) GDI_ReleaseObj( hdc );
714 return dc->hSelf;
718 /***********************************************************************
719 * DeleteDC (GDI.68)
721 BOOL16 WINAPI DeleteDC16( HDC16 hdc )
723 return DeleteDC( hdc );
727 /***********************************************************************
728 * DeleteDC (GDI32.@)
730 BOOL WINAPI DeleteDC( HDC hdc )
732 const DC_FUNCTIONS *funcs = NULL;
733 DC * dc;
735 TRACE("%04x\n", hdc );
737 GDI_CheckNotLock();
739 if (!(dc = GDI_GetObjPtr( hdc, DC_MAGIC ))) return FALSE;
741 /* Call hook procedure to check whether is it OK to delete this DC */
742 if (dc->hookThunk && !(dc->flags & (DC_SAVED | DC_MEMORY)))
744 DCHOOKPROC proc = dc->hookThunk;
745 if (proc)
747 DWORD data = dc->dwHookData;
748 GDI_ReleaseObj( hdc );
749 if (!proc( hdc, DCHC_DELETEDC, data, 0 )) return FALSE;
750 if (!(dc = DC_GetDCPtr( hdc ))) return TRUE; /* deleted by the hook */
754 while (dc->saveLevel)
756 DC * dcs;
757 HDC16 hdcs = dc->header.hNext;
758 if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
759 dc->header.hNext = dcs->header.hNext;
760 dc->saveLevel--;
761 GDI_ReleaseObj( hdcs );
762 DeleteDC( hdcs );
765 if (!(dc->flags & DC_SAVED))
767 SelectObject( hdc, GetStockObject(BLACK_PEN) );
768 SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
769 SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
770 SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
771 funcs = dc->funcs;
772 if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc);
775 if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
776 if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
777 if (dc->hGCClipRgn) DeleteObject( dc->hGCClipRgn );
778 if (dc->gdiFont) WineEngDecRefFont( dc->gdiFont );
779 PATH_DestroyGdiPath(&dc->path);
781 GDI_FreeObject( hdc, dc );
782 if (funcs) DRIVER_release_driver( funcs ); /* do that after releasing the GDI lock */
783 return TRUE;
787 /***********************************************************************
788 * ResetDC (GDI.376)
790 HDC16 WINAPI ResetDC16( HDC16 hdc, const DEVMODEA *devmode )
792 FIXME("stub\n" );
793 return hdc;
797 /***********************************************************************
798 * ResetDCA (GDI32.@)
800 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
802 FIXME("stub\n" );
803 return hdc;
807 /***********************************************************************
808 * ResetDCW (GDI32.@)
810 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
812 FIXME("stub\n" );
813 return hdc;
817 /***********************************************************************
818 * GetDeviceCaps (GDI.80)
820 INT16 WINAPI GetDeviceCaps16( HDC16 hdc, INT16 cap )
822 INT16 ret = GetDeviceCaps( hdc, cap );
823 /* some apps don't expect -1 and think it's a B&W screen */
824 if ((cap == NUMCOLORS) && (ret == -1)) ret = 2048;
825 return ret;
829 /***********************************************************************
830 * GetDeviceCaps (GDI32.@)
832 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
834 DC *dc;
835 INT ret = 0;
837 if ((dc = DC_GetDCPtr( hdc )))
839 if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc, cap );
840 GDI_ReleaseObj( hdc );
842 return ret;
846 /***********************************************************************
847 * SetBkColor (GDI.1)
849 COLORREF WINAPI SetBkColor16( HDC16 hdc, COLORREF color )
851 return SetBkColor( hdc, color );
855 /***********************************************************************
856 * SetBkColor (GDI32.@)
858 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
860 COLORREF oldColor;
861 DC * dc = DC_GetDCPtr( hdc );
863 if (!dc) return 0x80000000;
864 if (dc->funcs->pSetBkColor)
865 oldColor = dc->funcs->pSetBkColor(dc, color);
866 else {
867 oldColor = dc->backgroundColor;
868 dc->backgroundColor = color;
870 GDI_ReleaseObj( hdc );
871 return oldColor;
875 /***********************************************************************
876 * SetTextColor (GDI.9)
878 COLORREF WINAPI SetTextColor16( HDC16 hdc, COLORREF color )
880 return SetTextColor( hdc, color );
884 /***********************************************************************
885 * SetTextColor (GDI32.@)
887 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
889 COLORREF oldColor;
890 DC * dc = DC_GetDCPtr( hdc );
892 if (!dc) return 0x80000000;
893 if (dc->funcs->pSetTextColor)
894 oldColor = dc->funcs->pSetTextColor(dc, color);
895 else {
896 oldColor = dc->textColor;
897 dc->textColor = color;
899 GDI_ReleaseObj( hdc );
900 return oldColor;
903 /***********************************************************************
904 * SetTextAlign (GDI.346)
906 UINT16 WINAPI SetTextAlign16( HDC16 hdc, UINT16 align )
908 return SetTextAlign( hdc, align );
912 /***********************************************************************
913 * SetTextAlign (GDI32.@)
915 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
917 UINT prevAlign;
918 DC *dc = DC_GetDCPtr( hdc );
919 if (!dc) return 0x0;
920 if (dc->funcs->pSetTextAlign)
921 prevAlign = dc->funcs->pSetTextAlign(dc, align);
922 else {
923 prevAlign = dc->textAlign;
924 dc->textAlign = align;
926 GDI_ReleaseObj( hdc );
927 return prevAlign;
930 /***********************************************************************
931 * GetDCOrgEx (GDI32.@)
933 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
935 DC * dc;
937 if (!lpp) return FALSE;
938 if (!(dc = DC_GetDCPtr( hDC ))) return FALSE;
940 lpp->x = lpp->y = 0;
941 if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc, lpp );
942 lpp->x += dc->DCOrgX;
943 lpp->y += dc->DCOrgY;
944 GDI_ReleaseObj( hDC );
945 return TRUE;
949 /***********************************************************************
950 * GetDCOrg (GDI.79)
952 DWORD WINAPI GetDCOrg16( HDC16 hdc )
954 POINT pt;
955 if( GetDCOrgEx( hdc, &pt) )
956 return MAKELONG( (WORD)pt.x, (WORD)pt.y );
957 return 0;
961 /***********************************************************************
962 * SetDCOrg (GDI.117)
964 DWORD WINAPI SetDCOrg16( HDC16 hdc, INT16 x, INT16 y )
966 DWORD prevOrg;
967 DC *dc = DC_GetDCPtr( hdc );
968 if (!dc) return 0;
969 prevOrg = dc->DCOrgX | (dc->DCOrgY << 16);
970 dc->DCOrgX = x;
971 dc->DCOrgY = y;
972 GDI_ReleaseObj( hdc );
973 return prevOrg;
977 /***********************************************************************
978 * SetGraphicsMode (GDI32.@)
980 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
982 INT ret = 0;
983 DC *dc = DC_GetDCPtr( hdc );
985 /* One would think that setting the graphics mode to GM_COMPATIBLE
986 * would also reset the world transformation matrix to the unity
987 * matrix. However, in Windows, this is not the case. This doesn't
988 * make a lot of sense to me, but that's the way it is.
990 if (!dc) return 0;
991 if ((mode > 0) || (mode <= GM_LAST))
993 ret = dc->GraphicsMode;
994 dc->GraphicsMode = mode;
996 GDI_ReleaseObj( hdc );
997 return ret;
1001 /***********************************************************************
1002 * SetArcDirection (GDI.525)
1004 INT16 WINAPI SetArcDirection16( HDC16 hdc, INT16 nDirection )
1006 return SetArcDirection( (HDC)hdc, (INT)nDirection );
1010 /***********************************************************************
1011 * SetArcDirection (GDI32.@)
1013 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1015 DC * dc;
1016 INT nOldDirection = 0;
1018 if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1020 SetLastError(ERROR_INVALID_PARAMETER);
1021 return 0;
1024 if ((dc = DC_GetDCPtr( hdc )))
1026 nOldDirection = dc->ArcDirection;
1027 dc->ArcDirection = nDirection;
1028 GDI_ReleaseObj( hdc );
1030 return nOldDirection;
1034 /***********************************************************************
1035 * GetWorldTransform (GDI32.@)
1037 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1039 DC * dc;
1040 if (!xform) return FALSE;
1041 if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
1042 *xform = dc->xformWorld2Wnd;
1043 GDI_ReleaseObj( hdc );
1044 return TRUE;
1048 /***********************************************************************
1049 * SetWorldTransform (GDI32.@)
1051 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1053 BOOL ret = FALSE;
1054 DC *dc = DC_GetDCPtr( hdc );
1056 if (!dc) return FALSE;
1057 if (!xform) goto done;
1059 /* Check that graphics mode is GM_ADVANCED */
1060 if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1062 dc->xformWorld2Wnd = *xform;
1063 DC_UpdateXforms( dc );
1064 ret = TRUE;
1065 done:
1066 GDI_ReleaseObj( hdc );
1067 return ret;
1071 /****************************************************************************
1072 * ModifyWorldTransform [GDI32.@]
1073 * Modifies the world transformation for a device context.
1075 * PARAMS
1076 * hdc [I] Handle to device context
1077 * xform [I] XFORM structure that will be used to modify the world
1078 * transformation
1079 * iMode [I] Specifies in what way to modify the world transformation
1080 * Possible values:
1081 * MWT_IDENTITY
1082 * Resets the world transformation to the identity matrix.
1083 * The parameter xform is ignored.
1084 * MWT_LEFTMULTIPLY
1085 * Multiplies xform into the world transformation matrix from
1086 * the left.
1087 * MWT_RIGHTMULTIPLY
1088 * Multiplies xform into the world transformation matrix from
1089 * the right.
1091 * RETURNS STD
1093 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1094 DWORD iMode )
1096 BOOL ret = FALSE;
1097 DC *dc = DC_GetDCPtr( hdc );
1099 /* Check for illegal parameters */
1100 if (!dc) return FALSE;
1101 if (!xform) goto done;
1103 /* Check that graphics mode is GM_ADVANCED */
1104 if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1106 switch (iMode)
1108 case MWT_IDENTITY:
1109 dc->xformWorld2Wnd.eM11 = 1.0f;
1110 dc->xformWorld2Wnd.eM12 = 0.0f;
1111 dc->xformWorld2Wnd.eM21 = 0.0f;
1112 dc->xformWorld2Wnd.eM22 = 1.0f;
1113 dc->xformWorld2Wnd.eDx = 0.0f;
1114 dc->xformWorld2Wnd.eDy = 0.0f;
1115 break;
1116 case MWT_LEFTMULTIPLY:
1117 CombineTransform( &dc->xformWorld2Wnd, xform,
1118 &dc->xformWorld2Wnd );
1119 break;
1120 case MWT_RIGHTMULTIPLY:
1121 CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1122 xform );
1123 break;
1124 default:
1125 goto done;
1128 DC_UpdateXforms( dc );
1129 ret = TRUE;
1130 done:
1131 GDI_ReleaseObj( hdc );
1132 return ret;
1136 /****************************************************************************
1137 * CombineTransform [GDI32.@]
1138 * Combines two transformation matrices.
1140 * PARAMS
1141 * xformResult [O] Stores the result of combining the two matrices
1142 * xform1 [I] Specifies the first matrix to apply
1143 * xform2 [I] Specifies the second matrix to apply
1145 * REMARKS
1146 * The same matrix can be passed in for more than one of the parameters.
1148 * RETURNS STD
1150 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1151 const XFORM *xform2 )
1153 XFORM xformTemp;
1155 /* Check for illegal parameters */
1156 if (!xformResult || !xform1 || !xform2)
1157 return FALSE;
1159 /* Create the result in a temporary XFORM, since xformResult may be
1160 * equal to xform1 or xform2 */
1161 xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1162 xform1->eM12 * xform2->eM21;
1163 xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1164 xform1->eM12 * xform2->eM22;
1165 xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1166 xform1->eM22 * xform2->eM21;
1167 xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1168 xform1->eM22 * xform2->eM22;
1169 xformTemp.eDx = xform1->eDx * xform2->eM11 +
1170 xform1->eDy * xform2->eM21 +
1171 xform2->eDx;
1172 xformTemp.eDy = xform1->eDx * xform2->eM12 +
1173 xform1->eDy * xform2->eM22 +
1174 xform2->eDy;
1176 /* Copy the result to xformResult */
1177 *xformResult = xformTemp;
1179 return TRUE;
1183 /***********************************************************************
1184 * SetDCHook (GDI32.@)
1186 * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1188 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD dwHookData )
1190 DC *dc = DC_GetDCPtr( hdc );
1192 if (!dc) return FALSE;
1193 dc->dwHookData = dwHookData;
1194 dc->hookThunk = hookProc;
1195 GDI_ReleaseObj( hdc );
1196 return TRUE;
1200 /* relay function to call the 16-bit DC hook proc */
1201 static BOOL16 WINAPI call_dc_hook16( HDC16 hdc, WORD code, DWORD data, LPARAM lParam )
1203 FARPROC16 proc = NULL;
1204 DC *dc = DC_GetDCPtr( hdc );
1205 if (!dc) return FALSE;
1206 proc = dc->hookProc;
1207 GDI_ReleaseObj( hdc );
1208 if (!proc) return FALSE;
1209 return GDI_CallTo16_word_wwll( proc, hdc, code, data, lParam );
1212 /***********************************************************************
1213 * SetDCHook (GDI.190)
1215 BOOL16 WINAPI SetDCHook16( HDC16 hdc, FARPROC16 hookProc, DWORD dwHookData )
1217 DC *dc = DC_GetDCPtr( hdc );
1218 if (!dc) return FALSE;
1220 dc->hookProc = hookProc;
1221 GDI_ReleaseObj( hdc );
1222 return SetDCHook( hdc, call_dc_hook16, dwHookData );
1226 /***********************************************************************
1227 * GetDCHook (GDI.191)
1229 DWORD WINAPI GetDCHook( HDC16 hdc, FARPROC16 *phookProc )
1231 DC *dc = DC_GetDCPtr( hdc );
1232 if (!dc) return 0;
1233 *phookProc = dc->hookProc;
1234 GDI_ReleaseObj( hdc );
1235 return dc->dwHookData;
1239 /***********************************************************************
1240 * SetHookFlags (GDI.192)
1242 WORD WINAPI SetHookFlags16(HDC16 hDC, WORD flags)
1244 DC *dc = DC_GetDCPtr( hDC );
1246 if( dc )
1248 WORD wRet = dc->flags & DC_DIRTY;
1250 /* "Undocumented Windows" info is slightly confusing.
1253 TRACE("hDC %04x, flags %04x\n",hDC,flags);
1255 if( flags & DCHF_INVALIDATEVISRGN )
1256 dc->flags |= DC_DIRTY;
1257 else if( flags & DCHF_VALIDATEVISRGN || !flags )
1258 dc->flags &= ~DC_DIRTY;
1259 GDI_ReleaseObj( hDC );
1260 return wRet;
1262 return 0;
1265 /***********************************************************************
1266 * SetICMMode (GDI32.@)
1268 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1270 /*FIXME Asuming that ICM is always off, and cannot be turned on */
1271 if (iEnableICM == ICM_OFF) return ICM_OFF;
1272 if (iEnableICM == ICM_ON) return 0;
1273 if (iEnableICM == ICM_QUERY) return ICM_OFF;
1274 return 0;
1277 /***********************************************************************
1278 * GetDeviceGammaRamp (GDI32.@)
1280 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1282 BOOL ret = FALSE;
1283 DC *dc = DC_GetDCPtr( hDC );
1285 if( dc )
1287 if (dc->funcs->pGetDeviceGammaRamp)
1288 ret = dc->funcs->pGetDeviceGammaRamp(dc, ptr);
1289 GDI_ReleaseObj( hDC );
1291 return ret;
1294 /***********************************************************************
1295 * SetDeviceGammaRamp (GDI32.@)
1297 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1299 BOOL ret = FALSE;
1300 DC *dc = DC_GetDCPtr( hDC );
1302 if( dc )
1304 if (dc->funcs->pSetDeviceGammaRamp)
1305 ret = dc->funcs->pSetDeviceGammaRamp(dc, ptr);
1306 GDI_ReleaseObj( hDC );
1308 return ret;
1311 /***********************************************************************
1312 * GetColorSpace (GDI32.@)
1314 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1316 /*FIXME Need to to whatever GetColorSpace actually does */
1317 return 0;
1320 /***********************************************************************
1321 * CreateColorSpaceA (GDI32.@)
1323 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1325 FIXME( "stub\n" );
1326 return 0;
1329 /***********************************************************************
1330 * CreateColorSpaceW (GDI32.@)
1332 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1334 FIXME( "stub\n" );
1335 return 0;
1338 /***********************************************************************
1339 * DeleteColorSpace (GDI32.@)
1341 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1343 FIXME( "stub\n" );
1345 return TRUE;
1348 /***********************************************************************
1349 * SetColorSpace (GDI32.@)
1351 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1353 FIXME( "stub\n" );
1355 return hColorSpace;
1358 /***********************************************************************
1359 * GetBoundsRect (GDI.194)
1361 UINT16 WINAPI GetBoundsRect16(HDC16 hdc, LPRECT16 rect, UINT16 flags)
1363 return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1366 /***********************************************************************
1367 * GetBoundsRect (GDI32.@)
1369 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1371 FIXME("(): stub\n");
1372 return DCB_RESET; /* bounding rectangle always empty */
1375 /***********************************************************************
1376 * SetBoundsRect (GDI.193)
1378 UINT16 WINAPI SetBoundsRect16(HDC16 hdc, const RECT16* rect, UINT16 flags)
1380 if ( (flags & DCB_ACCUMULATE) || (flags & DCB_ENABLE) )
1381 FIXME("(%04x, %p, %04x): stub\n", hdc, rect, flags );
1383 return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1386 /***********************************************************************
1387 * SetBoundsRect (GDI32.@)
1389 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1391 FIXME("(): stub\n");
1392 return DCB_DISABLE; /* bounding rectangle always empty */
1396 /***********************************************************************
1397 * GetRelAbs (GDI32.@)
1399 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1401 INT ret = 0;
1402 DC *dc = DC_GetDCPtr( hdc );
1403 if (dc) ret = dc->relAbsMode;
1404 GDI_ReleaseObj( hdc );
1405 return ret;
1408 /***********************************************************************
1409 * Death (GDI.121)
1411 * Disables GDI, switches back to text mode.
1412 * We don't have to do anything here,
1413 * just let console support handle everything
1415 void WINAPI Death16(HDC16 hDC)
1417 MESSAGE("Death(%04x) called. Application enters text mode...\n", hDC);
1420 /***********************************************************************
1421 * Resurrection (GDI.122)
1423 * Restores GDI functionality
1425 void WINAPI Resurrection16(HDC16 hDC,
1426 WORD w1, WORD w2, WORD w3, WORD w4, WORD w5, WORD w6)
1428 MESSAGE("Resurrection(%04x, %04x, %04x, %04x, %04x, %04x, %04x) called. Application left text mode.\n", hDC, w1, w2, w3, w4, w5, w6);
1431 /***********************************************************************
1432 * GetLayout (GDI32.@)
1434 * Gets left->right or right->left text layout flags of a dc.
1435 * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1438 DWORD WINAPI GetLayout(HDC hdc)
1440 FIXME("(%08x): stub\n", hdc);
1441 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1442 return 0;
1445 /***********************************************************************
1446 * SetLayout (GDI32.@)
1448 * Sets left->right or right->left text layout flags of a dc.
1449 * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1452 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1454 FIXME("(%08x,%08lx): stub\n", hdc, layout);
1455 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1456 return 0;