dlls/gdi32/driver.c

   1 /*
   2  * Graphics driver management functions
   3  *
   4  * Copyright 1994 Bob Amstadt
   5  * Copyright 1996, 2001 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <assert.h>
  26 #include <stdarg.h>
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winreg.h"
  32 #include "ddrawgdi.h"
  33 #include "wine/winbase16.h"
  34
  35 #include "gdi_private.h"
  36 #include "wine/unicode.h"
  37 #include "wine/list.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  41
  42 struct graphics_driver
  43 {
  44     struct list                entry;
  45     HMODULE                    module;  /* module handle */
  46     const struct gdi_dc_funcs *funcs;
  47 };
  48
  49 static struct list drivers = LIST_INIT( drivers );
  50 static struct graphics_driver *display_driver;
  51
  52 const struct gdi_dc_funcs *font_driver = NULL;
  53
  54 static CRITICAL_SECTION driver_section;
  55 static CRITICAL_SECTION_DEBUG critsect_debug =
  56 {
  57     0, 0, &driver_section,
  58     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  59       0, 0, { (DWORD_PTR)(__FILE__ ": driver_section") }
  60 };
  61 static CRITICAL_SECTION driver_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  62
  63 /**********************************************************************
  64  *           create_driver
  65  *
  66  * Allocate and fill the driver structure for a given module.
  67  */
  68 static struct graphics_driver *create_driver( HMODULE module )
  69 {
  70     static const struct gdi_dc_funcs empty_funcs;
  71     const struct gdi_dc_funcs *funcs = NULL;
  72     struct graphics_driver *driver;
  73
  74     if (!(driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver)))) return NULL;
  75     driver->module = module;
  76
  77     if (module)
  78     {
  79         const struct gdi_dc_funcs * (CDECL *wine_get_gdi_driver)( unsigned int version );
  80
  81         if ((wine_get_gdi_driver = (void *)GetProcAddress( module, "wine_get_gdi_driver" )))
  82             funcs = wine_get_gdi_driver( WINE_GDI_DRIVER_VERSION );
  83     }
  84     if (!funcs) funcs = &empty_funcs;
  85     driver->funcs = funcs;
  86     return driver;
  87 }
  88
  89
  90 /**********************************************************************
  91  *           get_display_driver
  92  *
  93  * Special case for loading the display driver: get the name from the config file
  94  */
  95 static const struct gdi_dc_funcs *get_display_driver(void)
  96 {
  97     struct graphics_driver *driver;
  98     char buffer[MAX_PATH], libname[32], *name, *next;
  99     HMODULE module = 0;
 100     HKEY hkey;
 101
 102     if (display_driver) return display_driver->funcs;  /* already loaded */
 103
 104     strcpy( buffer, "x11" );  /* default value */
 105     /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
 106     if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
 107     {
 108         DWORD type, count = sizeof(buffer);
 109         RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
 110         RegCloseKey( hkey );
 111     }
 112
 113     name = buffer;
 114     while (name)
 115     {
 116         next = strchr( name, ',' );
 117         if (next) *next++ = 0;
 118
 119         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 120         if ((module = LoadLibraryA( libname )) != 0) break;
 121         name = next;
 122     }
 123
 124     if (!(driver = create_driver( module )))
 125     {
 126         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 127         FreeLibrary( module );
 128         ExitProcess(1);
 129     }
 130     if (InterlockedCompareExchangePointer( (void **)&display_driver, driver, NULL ))
 131     {
 132         /* somebody beat us to it */
 133         FreeLibrary( driver->module );
 134         HeapFree( GetProcessHeap(), 0, driver );
 135     }
 136     return display_driver->funcs;
 137 }
 138
 139
 140 /**********************************************************************
 141  *           DRIVER_load_driver
 142  */
 143 const struct gdi_dc_funcs *DRIVER_load_driver( LPCWSTR name )
 144 {
 145     HMODULE module;
 146     struct graphics_driver *driver, *new_driver;
 147     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 148     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 149
 150     /* display driver is a special case */
 151     if (!strcmpiW( name, displayW ) || !strcmpiW( name, display1W )) return get_display_driver();
 152
 153     if ((module = GetModuleHandleW( name )))
 154     {
 155         if (display_driver && display_driver->module == module) return display_driver->funcs;
 156         EnterCriticalSection( &driver_section );
 157         LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
 158         {
 159             if (driver->module == module) goto done;
 160         }
 161         LeaveCriticalSection( &driver_section );
 162     }
 163
 164     if (!(module = LoadLibraryW( name ))) return NULL;
 165
 166     if (!(new_driver = create_driver( module )))
 167     {
 168         FreeLibrary( module );
 169         return NULL;
 170     }
 171
 172     /* check if someone else added it in the meantime */
 173     EnterCriticalSection( &driver_section );
 174     LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
 175     {
 176         if (driver->module != module) continue;
 177         FreeLibrary( module );
 178         HeapFree( GetProcessHeap(), 0, new_driver );
 179         goto done;
 180     }
 181     driver = new_driver;
 182     list_add_head( &drivers, &driver->entry );
 183     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 184 done:
 185     LeaveCriticalSection( &driver_section );
 186     return driver->funcs;
 187 }
 188
 189
 190 static INT nulldrv_AbortDoc( PHYSDEV dev )
 191 {
 192     return 0;
 193 }
 194
 195 static BOOL nulldrv_Arc( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 196                          INT xstart, INT ystart, INT xend, INT yend )
 197 {
 198     return TRUE;
 199 }
 200
 201 static INT nulldrv_ChoosePixelFormat( PHYSDEV dev, const PIXELFORMATDESCRIPTOR *descr )
 202 {
 203     return 0;
 204 }
 205
 206 static BOOL nulldrv_Chord( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 207                            INT xstart, INT ystart, INT xend, INT yend )
 208 {
 209     return TRUE;
 210 }
 211
 212 static BOOL nulldrv_CreateBitmap( PHYSDEV dev, HBITMAP bitmap )
 213 {
 214     return TRUE;
 215 }
 216
 217 static BOOL nulldrv_CreateCompatibleDC( PHYSDEV orig, PHYSDEV *pdev )
 218 {
 219     if (!display_driver || !display_driver->funcs->pCreateCompatibleDC) return TRUE;
 220     return display_driver->funcs->pCreateCompatibleDC( NULL, pdev );
 221 }
 222
 223 static BOOL nulldrv_CreateDC( PHYSDEV *dev, LPCWSTR driver, LPCWSTR device,
 224                               LPCWSTR output, const DEVMODEW *devmode )
 225 {
 226     assert(0);  /* should never be called */
 227     return FALSE;
 228 }
 229
 230 static HBITMAP nulldrv_CreateDIBSection( PHYSDEV dev, HBITMAP bitmap, BITMAPINFO *info, UINT usage )
 231 {
 232     return bitmap;
 233 }
 234
 235 static BOOL nulldrv_DeleteBitmap( HBITMAP bitmap )
 236 {
 237     return TRUE;
 238 }
 239
 240 static BOOL nulldrv_DeleteDC( PHYSDEV dev )
 241 {
 242     assert(0);  /* should never be called */
 243     return TRUE;
 244 }
 245
 246 static BOOL nulldrv_DeleteObject( PHYSDEV dev, HGDIOBJ obj )
 247 {
 248     return TRUE;
 249 }
 250
 251 static INT nulldrv_DescribePixelFormat( PHYSDEV dev, INT format, UINT size, PIXELFORMATDESCRIPTOR * descr )
 252 {
 253     return 0;
 254 }
 255
 256 static DWORD nulldrv_DeviceCapabilities( LPSTR buffer, LPCSTR device, LPCSTR port,
 257                                          WORD cap, LPSTR output, DEVMODEA *devmode )
 258 {
 259     return -1;
 260 }
 261
 262 static BOOL nulldrv_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
 263 {
 264     return TRUE;
 265 }
 266
 267 static INT nulldrv_EndDoc( PHYSDEV dev )
 268 {
 269     return 0;
 270 }
 271
 272 static INT nulldrv_EndPage( PHYSDEV dev )
 273 {
 274     return 0;
 275 }
 276
 277 static BOOL nulldrv_EnumFonts( PHYSDEV dev, LOGFONTW *logfont, FONTENUMPROCW proc, LPARAM lParam )
 278 {
 279     return TRUE;
 280 }
 281
 282 static INT nulldrv_EnumICMProfiles( PHYSDEV dev, ICMENUMPROCW func, LPARAM lparam )
 283 {
 284     return -1;
 285 }
 286
 287 static INT nulldrv_ExtDeviceMode( LPSTR buffer, HWND hwnd, DEVMODEA *output, LPSTR device,
 288                                   LPSTR port, DEVMODEA *input, LPSTR profile, DWORD mode )
 289 {
 290     return -1;
 291 }
 292
 293 static INT nulldrv_ExtEscape( PHYSDEV dev, INT escape, INT in_size, const void *in_data,
 294                                     INT out_size, void *out_data )
 295 {
 296     return 0;
 297 }
 298
 299 static BOOL nulldrv_ExtFloodFill( PHYSDEV dev, INT x, INT y, COLORREF color, UINT type )
 300 {
 301     return TRUE;
 302 }
 303
 304 static BOOL nulldrv_FontIsLinked( PHYSDEV dev )
 305 {
 306     return FALSE;
 307 }
 308
 309 static BOOL nulldrv_GdiComment( PHYSDEV dev, UINT size, const BYTE *data )
 310 {
 311     return FALSE;
 312 }
 313
 314 static BOOL nulldrv_GdiRealizationInfo( PHYSDEV dev, void *info )
 315 {
 316     return FALSE;
 317 }
 318
 319 static BOOL nulldrv_GetCharABCWidths( PHYSDEV dev, UINT first, UINT last, LPABC abc )
 320 {
 321     return FALSE;
 322 }
 323
 324 static BOOL nulldrv_GetCharABCWidthsI( PHYSDEV dev, UINT first, UINT count, WORD *indices, LPABC abc )
 325 {
 326     return FALSE;
 327 }
 328
 329 static BOOL nulldrv_GetCharWidth( PHYSDEV dev, UINT first, UINT last, INT *buffer )
 330 {
 331     return FALSE;
 332 }
 333
 334 static INT nulldrv_GetDeviceCaps( PHYSDEV dev, INT cap )
 335 {
 336     switch (cap)  /* return meaningful values for some entries */
 337     {
 338     case HORZRES:     return 640;
 339     case VERTRES:     return 480;
 340     case BITSPIXEL:   return 1;
 341     case PLANES:      return 1;
 342     case NUMCOLORS:   return 2;
 343     case ASPECTX:     return 36;
 344     case ASPECTY:     return 36;
 345     case ASPECTXY:    return 51;
 346     case LOGPIXELSX:  return 72;
 347     case LOGPIXELSY:  return 72;
 348     case SIZEPALETTE: return 2;
 349     case TEXTCAPS:    return (TC_OP_CHARACTER | TC_OP_STROKE | TC_CP_STROKE |
 350                               TC_CR_ANY | TC_SF_X_YINDEP | TC_SA_DOUBLE | TC_SA_INTEGER |
 351                               TC_SA_CONTIN | TC_UA_ABLE | TC_SO_ABLE | TC_RA_ABLE | TC_VA_ABLE);
 352     default:          return 0;
 353     }
 354 }
 355
 356 static BOOL nulldrv_GetDeviceGammaRamp( PHYSDEV dev, void *ramp )
 357 {
 358     return FALSE;
 359 }
 360
 361 static DWORD nulldrv_GetFontData( PHYSDEV dev, DWORD table, DWORD offset, LPVOID buffer, DWORD length )
 362 {
 363     return FALSE;
 364 }
 365
 366 static DWORD nulldrv_GetFontUnicodeRanges( PHYSDEV dev, LPGLYPHSET glyphs )
 367 {
 368     return 0;
 369 }
 370
 371 static DWORD nulldrv_GetGlyphIndices( PHYSDEV dev, LPCWSTR str, INT count, LPWORD indices, DWORD flags )
 372 {
 373     return GDI_ERROR;
 374 }
 375
 376 static DWORD nulldrv_GetGlyphOutline( PHYSDEV dev, UINT ch, UINT format, LPGLYPHMETRICS metrics,
 377                                       DWORD size, LPVOID buffer, const MAT2 *mat )
 378 {
 379     return GDI_ERROR;
 380 }
 381
 382 static BOOL nulldrv_GetICMProfile( PHYSDEV dev, LPDWORD size, LPWSTR filename )
 383 {
 384     return FALSE;
 385 }
 386
 387 static DWORD nulldrv_GetKerningPairs( PHYSDEV dev, DWORD count, LPKERNINGPAIR pairs )
 388 {
 389     return 0;
 390 }
 391
 392 static UINT nulldrv_GetOutlineTextMetrics( PHYSDEV dev, UINT size, LPOUTLINETEXTMETRICW otm )
 393 {
 394     return 0;
 395 }
 396
 397 static INT nulldrv_GetPixelFormat( PHYSDEV dev )
 398 {
 399     return 0;
 400 }
 401
 402 static UINT nulldrv_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, PALETTEENTRY *entries )
 403 {
 404     return 0;
 405 }
 406
 407 static UINT nulldrv_GetTextCharsetInfo( PHYSDEV dev, LPFONTSIGNATURE fs, DWORD flags )
 408 {
 409     return DEFAULT_CHARSET;
 410 }
 411
 412 static BOOL nulldrv_GetTextExtentExPoint( PHYSDEV dev, LPCWSTR str, INT count, INT max_ext,
 413                                           INT *fit, INT *dx, SIZE *size )
 414 {
 415     return FALSE;
 416 }
 417
 418 static BOOL nulldrv_GetTextExtentExPointI( PHYSDEV dev, const WORD *indices, INT count, INT max_ext,
 419                                            INT *fit, INT *dx, SIZE *size )
 420 {
 421     return FALSE;
 422 }
 423
 424 static INT nulldrv_GetTextFace( PHYSDEV dev, INT size, LPWSTR name )
 425 {
 426     INT ret = 0;
 427     LOGFONTW font;
 428     HFONT hfont = GetCurrentObject( dev->hdc, OBJ_FONT );
 429
 430     if (GetObjectW( hfont, sizeof(font), &font ))
 431     {
 432         ret = strlenW( font.lfFaceName ) + 1;
 433         if (name)
 434         {
 435             lstrcpynW( name, font.lfFaceName, size );
 436             ret = min( size, ret );
 437         }
 438     }
 439     return ret;
 440 }
 441
 442 static BOOL nulldrv_GetTextMetrics( PHYSDEV dev, TEXTMETRICW *metrics )
 443 {
 444     return FALSE;
 445 }
 446
 447 static BOOL nulldrv_LineTo( PHYSDEV dev, INT x, INT y )
 448 {
 449     return TRUE;
 450 }
 451
 452 static BOOL nulldrv_MoveTo( PHYSDEV dev, INT x, INT y )
 453 {
 454     return TRUE;
 455 }
 456
 457 static BOOL nulldrv_PaintRgn( PHYSDEV dev, HRGN rgn )
 458 {
 459     return TRUE;
 460 }
 461
 462 static BOOL nulldrv_PatBlt( PHYSDEV dev, struct bitblt_coords *dst, DWORD rop )
 463 {
 464     return TRUE;
 465 }
 466
 467 static BOOL nulldrv_Pie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 468                          INT xstart, INT ystart, INT xend, INT yend )
 469 {
 470     return TRUE;
 471 }
 472
 473 static BOOL nulldrv_PolyPolygon( PHYSDEV dev, const POINT *points, const INT *counts, UINT polygons )
 474 {
 475     return TRUE;
 476 }
 477
 478 static BOOL nulldrv_PolyPolyline( PHYSDEV dev, const POINT *points, const DWORD *counts, DWORD lines )
 479 {
 480     return TRUE;
 481 }
 482
 483 static BOOL nulldrv_Polygon( PHYSDEV dev, const POINT *points, INT count )
 484 {
 485     INT counts[1] = { count };
 486
 487     return PolyPolygon( dev->hdc, points, counts, 1 );
 488 }
 489
 490 static BOOL nulldrv_Polyline( PHYSDEV dev, const POINT *points, INT count )
 491 {
 492     DWORD counts[1] = { count };
 493
 494     if (count < 0) return FALSE;
 495     return PolyPolyline( dev->hdc, points, counts, 1 );
 496 }
 497
 498 static UINT nulldrv_RealizeDefaultPalette( PHYSDEV dev )
 499 {
 500     return 0;
 501 }
 502
 503 static UINT nulldrv_RealizePalette( PHYSDEV dev, HPALETTE palette, BOOL primary )
 504 {
 505     return 0;
 506 }
 507
 508 static BOOL nulldrv_Rectangle( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
 509 {
 510     return TRUE;
 511 }
 512
 513 static HDC nulldrv_ResetDC( PHYSDEV dev, const DEVMODEW *devmode )
 514 {
 515     return 0;
 516 }
 517
 518 static BOOL nulldrv_RoundRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 519                                INT ell_width, INT ell_height )
 520 {
 521     return TRUE;
 522 }
 523
 524 static HBITMAP nulldrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
 525 {
 526     return bitmap;
 527 }
 528
 529 static HBRUSH nulldrv_SelectBrush( PHYSDEV dev, HBRUSH brush, HBITMAP bitmap,
 530                                    const BITMAPINFO *info, void *bits, UINT usage )
 531 {
 532     return brush;
 533 }
 534
 535 static HFONT nulldrv_SelectFont( PHYSDEV dev, HFONT font )
 536 {
 537     return 0;
 538 }
 539
 540 static HPALETTE nulldrv_SelectPalette( PHYSDEV dev, HPALETTE palette, BOOL bkgnd )
 541 {
 542     return palette;
 543 }
 544
 545 static HPEN nulldrv_SelectPen( PHYSDEV dev, HPEN pen )
 546 {
 547     return pen;
 548 }
 549
 550 static INT nulldrv_SetArcDirection( PHYSDEV dev, INT dir )
 551 {
 552     return dir;
 553 }
 554
 555 static COLORREF nulldrv_SetBkColor( PHYSDEV dev, COLORREF color )
 556 {
 557     return color;
 558 }
 559
 560 static INT nulldrv_SetBkMode( PHYSDEV dev, INT mode )
 561 {
 562     return mode;
 563 }
 564
 565 static COLORREF nulldrv_SetDCBrushColor( PHYSDEV dev, COLORREF color )
 566 {
 567     return color;
 568 }
 569
 570 static COLORREF nulldrv_SetDCPenColor( PHYSDEV dev, COLORREF color )
 571 {
 572     return color;
 573 }
 574
 575 static UINT nulldrv_SetDIBColorTable( PHYSDEV dev, UINT pos, UINT count, const RGBQUAD *colors )
 576 {
 577     return 0;
 578 }
 579
 580 static void nulldrv_SetDeviceClipping( PHYSDEV dev, HRGN rgn )
 581 {
 582 }
 583
 584 static DWORD nulldrv_SetLayout( PHYSDEV dev, DWORD layout )
 585 {
 586     return layout;
 587 }
 588
 589 static BOOL nulldrv_SetDeviceGammaRamp( PHYSDEV dev, void *ramp )
 590 {
 591     return FALSE;
 592 }
 593
 594 static DWORD nulldrv_SetMapperFlags( PHYSDEV dev, DWORD flags )
 595 {
 596     return flags;
 597 }
 598
 599 static COLORREF nulldrv_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
 600 {
 601     return color;
 602 }
 603
 604 static BOOL nulldrv_SetPixelFormat( PHYSDEV dev, INT format, const PIXELFORMATDESCRIPTOR *descr )
 605 {
 606     return FALSE;
 607 }
 608
 609 static INT nulldrv_SetPolyFillMode( PHYSDEV dev, INT mode )
 610 {
 611     return mode;
 612 }
 613
 614 static INT nulldrv_SetROP2( PHYSDEV dev, INT rop )
 615 {
 616     return rop;
 617 }
 618
 619 static INT nulldrv_SetRelAbs( PHYSDEV dev, INT mode )
 620 {
 621     return mode;
 622 }
 623
 624 static INT nulldrv_SetStretchBltMode( PHYSDEV dev, INT mode )
 625 {
 626     return mode;
 627 }
 628
 629 static UINT nulldrv_SetTextAlign( PHYSDEV dev, UINT align )
 630 {
 631     return align;
 632 }
 633
 634 static INT nulldrv_SetTextCharacterExtra( PHYSDEV dev, INT extra )
 635 {
 636     return extra;
 637 }
 638
 639 static COLORREF nulldrv_SetTextColor( PHYSDEV dev, COLORREF color )
 640 {
 641     return color;
 642 }
 643
 644 static BOOL nulldrv_SetTextJustification( PHYSDEV dev, INT extra, INT breaks )
 645 {
 646     return TRUE;
 647 }
 648
 649 static INT nulldrv_StartDoc( PHYSDEV dev, const DOCINFOW *info )
 650 {
 651     return 0;
 652 }
 653
 654 static INT nulldrv_StartPage( PHYSDEV dev )
 655 {
 656     return 1;
 657 }
 658
 659 static BOOL nulldrv_SwapBuffers( PHYSDEV dev )
 660 {
 661     return TRUE;
 662 }
 663
 664 static BOOL nulldrv_UnrealizePalette( HPALETTE palette )
 665 {
 666     return FALSE;
 667 }
 668
 669 static BOOL nulldrv_wglCopyContext( HGLRC ctx_src, HGLRC ctx_dst, UINT mask )
 670 {
 671     return FALSE;
 672 }
 673
 674 static HGLRC nulldrv_wglCreateContext( PHYSDEV dev )
 675 {
 676     return 0;
 677 }
 678
 679 static HGLRC nulldrv_wglCreateContextAttribsARB( PHYSDEV dev, HGLRC share_ctx, const int *attribs )
 680 {
 681     return 0;
 682 }
 683
 684 static BOOL nulldrv_wglDeleteContext( HGLRC ctx )
 685 {
 686     return FALSE;
 687 }
 688
 689 static PROC nulldrv_wglGetProcAddress( LPCSTR name )
 690 {
 691     return NULL;
 692 }
 693
 694 static HDC nulldrv_wglGetPbufferDCARB( PHYSDEV dev, void *pbuffer )
 695 {
 696     return 0;
 697 }
 698
 699 static BOOL nulldrv_wglMakeCurrent( PHYSDEV dev, HGLRC ctx )
 700 {
 701     return FALSE;
 702 }
 703
 704 static BOOL nulldrv_wglMakeContextCurrentARB( PHYSDEV dev_draw, PHYSDEV dev_read, HGLRC ctx )
 705 {
 706     return FALSE;
 707 }
 708
 709 static BOOL nulldrv_wglSetPixelFormatWINE( PHYSDEV dev, INT format, const PIXELFORMATDESCRIPTOR *descr )
 710 {
 711     return FALSE;
 712 }
 713
 714 static BOOL nulldrv_wglShareLists( HGLRC ctx1, HGLRC ctx2 )
 715 {
 716     return FALSE;
 717 }
 718
 719 static BOOL nulldrv_wglUseFontBitmapsA( PHYSDEV dev, DWORD start, DWORD count, DWORD base )
 720 {
 721     return FALSE;
 722 }
 723
 724 static BOOL nulldrv_wglUseFontBitmapsW( PHYSDEV dev, DWORD start, DWORD count, DWORD base )
 725 {
 726     return FALSE;
 727 }
 728
 729 const struct gdi_dc_funcs null_driver =
 730 {
 731     nulldrv_AbortDoc,                   /* pAbortDoc */
 732     nulldrv_AbortPath,                  /* pAbortPath */
 733     nulldrv_AlphaBlend,                 /* pAlphaBlend */
 734     nulldrv_AngleArc,                   /* pAngleArc */
 735     nulldrv_Arc,                        /* pArc */
 736     nulldrv_ArcTo,                      /* pArcTo */
 737     nulldrv_BeginPath,                  /* pBeginPath */
 738     nulldrv_BlendImage,                 /* pBlendImage */
 739     nulldrv_ChoosePixelFormat,          /* pChoosePixelFormat */
 740     nulldrv_Chord,                      /* pChord */
 741     nulldrv_CloseFigure,                /* pCloseFigure */
 742     nulldrv_CopyBitmap,                 /* pCopyBitmap */
 743     nulldrv_CreateBitmap,               /* pCreateBitmap */
 744     nulldrv_CreateCompatibleDC,         /* pCreateCompatibleDC */
 745     nulldrv_CreateDC,                   /* pCreateDC */
 746     nulldrv_CreateDIBSection,           /* pCreateDIBSection */
 747     nulldrv_DeleteBitmap,               /* pDeleteBitmap */
 748     nulldrv_DeleteDC,                   /* pDeleteDC */
 749     nulldrv_DeleteObject,               /* pDeleteObject */
 750     nulldrv_DescribePixelFormat,        /* pDescribePixelFormat */
 751     nulldrv_DeviceCapabilities,         /* pDeviceCapabilities */
 752     nulldrv_Ellipse,                    /* pEllipse */
 753     nulldrv_EndDoc,                     /* pEndDoc */
 754     nulldrv_EndPage,                    /* pEndPage */
 755     nulldrv_EndPath,                    /* pEndPath */
 756     nulldrv_EnumFonts,                  /* pEnumFonts */
 757     nulldrv_EnumICMProfiles,            /* pEnumICMProfiles */
 758     nulldrv_ExcludeClipRect,            /* pExcludeClipRect */
 759     nulldrv_ExtDeviceMode,              /* pExtDeviceMode */
 760     nulldrv_ExtEscape,                  /* pExtEscape */
 761     nulldrv_ExtFloodFill,               /* pExtFloodFill */
 762     nulldrv_ExtSelectClipRgn,           /* pExtSelectClipRgn */
 763     nulldrv_ExtTextOut,                 /* pExtTextOut */
 764     nulldrv_FillPath,                   /* pFillPath */
 765     nulldrv_FillRgn,                    /* pFillRgn */
 766     nulldrv_FlattenPath,                /* pFlattenPath */
 767     nulldrv_FontIsLinked,               /* pFontIsLinked */
 768     nulldrv_FrameRgn,                   /* pFrameRgn */
 769     nulldrv_GdiComment,                 /* pGdiComment */
 770     nulldrv_GdiRealizationInfo,         /* pGdiRealizationInfo */
 771     nulldrv_GetCharABCWidths,           /* pGetCharABCWidths */
 772     nulldrv_GetCharABCWidthsI,          /* pGetCharABCWidthsI */
 773     nulldrv_GetCharWidth,               /* pGetCharWidth */
 774     nulldrv_GetDeviceCaps,              /* pGetDeviceCaps */
 775     nulldrv_GetDeviceGammaRamp,         /* pGetDeviceGammaRamp */
 776     nulldrv_GetFontData,                /* pGetFontData */
 777     nulldrv_GetFontUnicodeRanges,       /* pGetFontUnicodeRanges */
 778     nulldrv_GetGlyphIndices,            /* pGetGlyphIndices */
 779     nulldrv_GetGlyphOutline,            /* pGetGlyphOutline */
 780     nulldrv_GetICMProfile,              /* pGetICMProfile */
 781     nulldrv_GetImage,                   /* pGetImage */
 782     nulldrv_GetKerningPairs,            /* pGetKerningPairs */
 783     nulldrv_GetNearestColor,            /* pGetNearestColor */
 784     nulldrv_GetOutlineTextMetrics,      /* pGetOutlineTextMetrics */
 785     nulldrv_GetPixel,                   /* pGetPixel */
 786     nulldrv_GetPixelFormat,             /* pGetPixelFormat */
 787     nulldrv_GetSystemPaletteEntries,    /* pGetSystemPaletteEntries */
 788     nulldrv_GetTextCharsetInfo,         /* pGetTextCharsetInfo */
 789     nulldrv_GetTextExtentExPoint,       /* pGetTextExtentExPoint */
 790     nulldrv_GetTextExtentExPointI,      /* pGetTextExtentExPointI */
 791     nulldrv_GetTextFace,                /* pGetTextFace */
 792     nulldrv_GetTextMetrics,             /* pGetTextMetrics */
 793     nulldrv_GradientFill,               /* pGradientFill */
 794     nulldrv_IntersectClipRect,          /* pIntersectClipRect */
 795     nulldrv_InvertRgn,                  /* pInvertRgn */
 796     nulldrv_LineTo,                     /* pLineTo */
 797     nulldrv_ModifyWorldTransform,       /* pModifyWorldTransform */
 798     nulldrv_MoveTo,                     /* pMoveTo */
 799     nulldrv_OffsetClipRgn,              /* pOffsetClipRgn */
 800     nulldrv_OffsetViewportOrgEx,        /* pOffsetViewportOrg */
 801     nulldrv_OffsetWindowOrgEx,          /* pOffsetWindowOrg */
 802     nulldrv_PaintRgn,                   /* pPaintRgn */
 803     nulldrv_PatBlt,                     /* pPatBlt */
 804     nulldrv_Pie,                        /* pPie */
 805     nulldrv_PolyBezier,                 /* pPolyBezier */
 806     nulldrv_PolyBezierTo,               /* pPolyBezierTo */
 807     nulldrv_PolyDraw,                   /* pPolyDraw */
 808     nulldrv_PolyPolygon,                /* pPolyPolygon */
 809     nulldrv_PolyPolyline,               /* pPolyPolyline */
 810     nulldrv_Polygon,                    /* pPolygon */
 811     nulldrv_Polyline,                   /* pPolyline */
 812     nulldrv_PolylineTo,                 /* pPolylineTo */
 813     nulldrv_PutImage,                   /* pPutImage */
 814     nulldrv_RealizeDefaultPalette,      /* pRealizeDefaultPalette */
 815     nulldrv_RealizePalette,             /* pRealizePalette */
 816     nulldrv_Rectangle,                  /* pRectangle */
 817     nulldrv_ResetDC,                    /* pResetDC */
 818     nulldrv_RestoreDC,                  /* pRestoreDC */
 819     nulldrv_RoundRect,                  /* pRoundRect */
 820     nulldrv_SaveDC,                     /* pSaveDC */
 821     nulldrv_ScaleViewportExtEx,         /* pScaleViewportExt */
 822     nulldrv_ScaleWindowExtEx,           /* pScaleWindowExt */
 823     nulldrv_SelectBitmap,               /* pSelectBitmap */
 824     nulldrv_SelectBrush,                /* pSelectBrush */
 825     nulldrv_SelectClipPath,             /* pSelectClipPath */
 826     nulldrv_SelectFont,                 /* pSelectFont */
 827     nulldrv_SelectPalette,              /* pSelectPalette */
 828     nulldrv_SelectPen,                  /* pSelectPen */
 829     nulldrv_SetArcDirection,            /* pSetArcDirection */
 830     nulldrv_SetBkColor,                 /* pSetBkColor */
 831     nulldrv_SetBkMode,                  /* pSetBkMode */
 832     nulldrv_SetDCBrushColor,            /* pSetDCBrushColor */
 833     nulldrv_SetDCPenColor,              /* pSetDCPenColor */
 834     nulldrv_SetDIBColorTable,           /* pSetDIBColorTable */
 835     nulldrv_SetDIBitsToDevice,          /* pSetDIBitsToDevice */
 836     nulldrv_SetDeviceClipping,          /* pSetDeviceClipping */
 837     nulldrv_SetDeviceGammaRamp,         /* pSetDeviceGammaRamp */
 838     nulldrv_SetLayout,                  /* pSetLayout */
 839     nulldrv_SetMapMode,                 /* pSetMapMode */
 840     nulldrv_SetMapperFlags,             /* pSetMapperFlags */
 841     nulldrv_SetPixel,                   /* pSetPixel */
 842     nulldrv_SetPixelFormat,             /* pSetPixelFormat */
 843     nulldrv_SetPolyFillMode,            /* pSetPolyFillMode */
 844     nulldrv_SetROP2,                    /* pSetROP2 */
 845     nulldrv_SetRelAbs,                  /* pSetRelAbs */
 846     nulldrv_SetStretchBltMode,          /* pSetStretchBltMode */
 847     nulldrv_SetTextAlign,               /* pSetTextAlign */
 848     nulldrv_SetTextCharacterExtra,      /* pSetTextCharacterExtra */
 849     nulldrv_SetTextColor,               /* pSetTextColor */
 850     nulldrv_SetTextJustification,       /* pSetTextJustification */
 851     nulldrv_SetViewportExtEx,           /* pSetViewportExt */
 852     nulldrv_SetViewportOrgEx,           /* pSetViewportOrg */
 853     nulldrv_SetWindowExtEx,             /* pSetWindowExt */
 854     nulldrv_SetWindowOrgEx,             /* pSetWindowOrg */
 855     nulldrv_SetWorldTransform,          /* pSetWorldTransform */
 856     nulldrv_StartDoc,                   /* pStartDoc */
 857     nulldrv_StartPage,                  /* pStartPage */
 858     nulldrv_StretchBlt,                 /* pStretchBlt */
 859     nulldrv_StretchDIBits,              /* pStretchDIBits */
 860     nulldrv_StrokeAndFillPath,          /* pStrokeAndFillPath */
 861     nulldrv_StrokePath,                 /* pStrokePath */
 862     nulldrv_SwapBuffers,                /* pSwapBuffers */
 863     nulldrv_UnrealizePalette,           /* pUnrealizePalette */
 864     nulldrv_WidenPath,                  /* pWidenPath */
 865     nulldrv_wglCopyContext,             /* pwglCopyContext */
 866     nulldrv_wglCreateContext,           /* pwglCreateContext */
 867     nulldrv_wglCreateContextAttribsARB, /* pwglCreateContextAttribsARB */
 868     nulldrv_wglDeleteContext,           /* pwglDeleteContext */
 869     nulldrv_wglGetPbufferDCARB,         /* pwglGetPbufferDCARB */
 870     nulldrv_wglGetProcAddress,          /* pwglGetProcAddress */
 871     nulldrv_wglMakeContextCurrentARB,   /* pwglMakeContextCurrentARB */
 872     nulldrv_wglMakeCurrent,             /* pwglMakeCurrent */
 873     nulldrv_wglSetPixelFormatWINE,      /* pwglSetPixelFormatWINE */
 874     nulldrv_wglShareLists,              /* pwglShareLists */
 875     nulldrv_wglUseFontBitmapsA,         /* pwglUseFontBitmapsA */
 876     nulldrv_wglUseFontBitmapsW,         /* pwglUseFontBitmapsW */
 877 };
 878
 879
 880 /*****************************************************************************
 881  *      DRIVER_GetDriverName
 882  *
 883  */
 884 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 885 {
 886     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 887     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 888     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 889     static const WCHAR empty_strW[] = { 0 };
 890     WCHAR *p;
 891
 892     /* display is a special case */
 893     if (!strcmpiW( device, displayW ) ||
 894         !strcmpiW( device, display1W ))
 895     {
 896         lstrcpynW( driver, displayW, size );
 897         return TRUE;
 898     }
 899
 900     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 901     if(!size) {
 902         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 903         return FALSE;
 904     }
 905     p = strchrW(driver, ',');
 906     if(!p)
 907     {
 908         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 909         return FALSE;
 910     }
 911     *p = 0;
 912     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 913     return TRUE;
 914 }
 915
 916
 917 /***********************************************************************
 918  *           GdiConvertToDevmodeW    (GDI32.@)
 919  */
 920 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 921 {
 922     DEVMODEW *dmW;
 923     WORD dmW_size, dmA_size;
 924
 925     dmA_size = dmA->dmSize;
 926
 927     /* this is the minimal dmSize that XP accepts */
 928     if (dmA_size < FIELD_OFFSET(DEVMODEA, dmFields))
 929         return NULL;
 930
 931     if (dmA_size > sizeof(DEVMODEA))
 932         dmA_size = sizeof(DEVMODEA);
 933
 934     dmW_size = dmA_size + CCHDEVICENAME;
 935     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 936         dmW_size += CCHFORMNAME;
 937
 938     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 939     if (!dmW) return NULL;
 940
 941     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, -1,
 942                                    dmW->dmDeviceName, CCHDEVICENAME);
 943     /* copy slightly more, to avoid long computations */
 944     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA_size - CCHDEVICENAME);
 945
 946     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 947     {
 948         if (dmA->dmFields & DM_FORMNAME)
 949             MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, -1,
 950                                        dmW->dmFormName, CCHFORMNAME);
 951         else
 952             dmW->dmFormName[0] = 0;
 953
 954         if (dmA_size > FIELD_OFFSET(DEVMODEA, dmLogPixels))
 955             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA_size - FIELD_OFFSET(DEVMODEA, dmLogPixels));
 956     }
 957
 958     if (dmA->dmDriverExtra)
 959         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA_size, dmA->dmDriverExtra);
 960
 961     dmW->dmSize = dmW_size;
 962
 963     return dmW;
 964 }
 965
 966
 967 /*****************************************************************************
 968  *      @ [GDI32.100]
 969  *
 970  * This should thunk to 16-bit and simply call the proc with the given args.
 971  */
 972 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 973                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 974 {
 975     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 976     return -1;
 977 }
 978
 979 /*****************************************************************************
 980  *      @ [GDI32.101]
 981  *
 982  * This should load the correct driver for lpszDevice and calls this driver's
 983  * ExtDeviceModePropSheet proc.
 984  *
 985  * Note: The driver calls a callback routine for each property sheet page; these
 986  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 987  * The layout of this structure is:
 988  *
 989  * struct
 990  * {
 991  *   DWORD  nPages;
 992  *   DWORD  unknown;
 993  *   HPROPSHEETPAGE  pages[10];
 994  * };
 995  */
 996 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 997                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 998 {
 999     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
1000     return -1;
1001 }
1002
1003 /*****************************************************************************
1004  *      @ [GDI32.102]
1005  *
1006  * This should load the correct driver for lpszDevice and call this driver's
1007  * ExtDeviceMode proc.
1008  *
1009  * FIXME: convert ExtDeviceMode to unicode in the driver interface
1010  */
1011 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
1012                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
1013                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
1014                                     LPSTR lpszProfile, DWORD fwMode )
1015 {
1016     WCHAR deviceW[300];
1017     WCHAR bufW[300];
1018     char buf[300];
1019     HDC hdc;
1020     DC *dc;
1021     INT ret = -1;
1022
1023     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
1024           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
1025
1026     if (!lpszDevice) return -1;
1027     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
1028
1029     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
1030
1031     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
1032
1033     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
1034
1035     if ((dc = get_dc_ptr( hdc )))
1036     {
1037         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pExtDeviceMode );
1038         ret = physdev->funcs->pExtDeviceMode( buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
1039                                               lpdmInput, lpszProfile, fwMode );
1040         release_dc_ptr( dc );
1041     }
1042     DeleteDC( hdc );
1043     return ret;
1044 }
1045
1046 /****************************************************************************
1047  *      @ [GDI32.103]
1048  *
1049  * This should load the correct driver for lpszDevice and calls this driver's
1050  * AdvancedSetupDialog proc.
1051  */
1052 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
1053                                           LPDEVMODEA devin, LPDEVMODEA devout )
1054 {
1055     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
1056     return -1;
1057 }
1058
1059 /*****************************************************************************
1060  *      @ [GDI32.104]
1061  *
1062  * This should load the correct driver for lpszDevice and calls this driver's
1063  * DeviceCapabilities proc.
1064  *
1065  * FIXME: convert DeviceCapabilities to unicode in the driver interface
1066  */
1067 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
1068                                            WORD fwCapability, LPSTR lpszOutput,
1069                                            LPDEVMODEA lpdm )
1070 {
1071     WCHAR deviceW[300];
1072     WCHAR bufW[300];
1073     char buf[300];
1074     HDC hdc;
1075     DC *dc;
1076     INT ret = -1;
1077
1078     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
1079
1080     if (!lpszDevice) return -1;
1081     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
1082
1083     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
1084
1085     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
1086
1087     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
1088
1089     if ((dc = get_dc_ptr( hdc )))
1090     {
1091         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pDeviceCapabilities );
1092         ret = physdev->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
1093                                                    fwCapability, lpszOutput, lpdm );
1094         release_dc_ptr( dc );
1095     }
1096     DeleteDC( hdc );
1097     return ret;
1098 }
1099
1100
1101 /************************************************************************
1102  *             Escape  [GDI32.@]
1103  */
1104 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
1105 {
1106     INT ret;
1107     POINT *pt;
1108
1109     switch (escape)
1110     {
1111     case ABORTDOC:
1112         return AbortDoc( hdc );
1113
1114     case ENDDOC:
1115         return EndDoc( hdc );
1116
1117     case GETPHYSPAGESIZE:
1118         pt = out_data;
1119         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
1120         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
1121         return 1;
1122
1123     case GETPRINTINGOFFSET:
1124         pt = out_data;
1125         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
1126         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
1127         return 1;
1128
1129     case GETSCALINGFACTOR:
1130         pt = out_data;
1131         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
1132         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
1133         return 1;
1134
1135     case NEWFRAME:
1136         return EndPage( hdc );
1137
1138     case SETABORTPROC:
1139         return SetAbortProc( hdc, (ABORTPROC)in_data );
1140
1141     case STARTDOC:
1142         {
1143             DOCINFOA doc;
1144             char *name = NULL;
1145
1146             /* in_data may not be 0 terminated so we must copy it */
1147             if (in_data)
1148             {
1149                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
1150                 memcpy( name, in_data, in_count );
1151                 name[in_count] = 0;
1152             }
1153             /* out_data is actually a pointer to the DocInfo structure and used as
1154              * a second input parameter */
1155             if (out_data) doc = *(DOCINFOA *)out_data;
1156             else
1157             {
1158                 doc.cbSize = sizeof(doc);
1159                 doc.lpszOutput = NULL;
1160                 doc.lpszDatatype = NULL;
1161                 doc.fwType = 0;
1162             }
1163             doc.lpszDocName = name;
1164             ret = StartDocA( hdc, &doc );
1165             HeapFree( GetProcessHeap(), 0, name );
1166             if (ret > 0) ret = StartPage( hdc );
1167             return ret;
1168         }
1169
1170     case QUERYESCSUPPORT:
1171         {
1172             const INT *ptr = (const INT *)in_data;
1173             if (in_count < sizeof(INT)) return 0;
1174             switch(*ptr)
1175             {
1176             case ABORTDOC:
1177             case ENDDOC:
1178             case GETPHYSPAGESIZE:
1179             case GETPRINTINGOFFSET:
1180             case GETSCALINGFACTOR:
1181             case NEWFRAME:
1182             case QUERYESCSUPPORT:
1183             case SETABORTPROC:
1184             case STARTDOC:
1185                 return TRUE;
1186             }
1187             break;
1188         }
1189     }
1190
1191     /* if not handled internally, pass it to the driver */
1192     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
1193 }
1194
1195
1196 /******************************************************************************
1197  *              ExtEscape       [GDI32.@]
1198  *
1199  * Access capabilities of a particular device that are not available through GDI.
1200  *
1201  * PARAMS
1202  *    hdc         [I] Handle to device context
1203  *    nEscape     [I] Escape function
1204  *    cbInput     [I] Number of bytes in input structure
1205  *    lpszInData  [I] Pointer to input structure
1206  *    cbOutput    [I] Number of bytes in output structure
1207  *    lpszOutData [O] Pointer to output structure
1208  *
1209  * RETURNS
1210  *    Success: >0
1211  *    Not implemented: 0
1212  *    Failure: <0
1213  */
1214 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
1215                       INT cbOutput, LPSTR lpszOutData )
1216 {
1217     INT ret = 0;
1218     DC * dc = get_dc_ptr( hdc );
1219
1220     if (dc)
1221     {
1222         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pExtEscape );
1223         update_dc( dc );
1224         ret = physdev->funcs->pExtEscape( physdev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
1225         release_dc_ptr( dc );
1226     }
1227     return ret;
1228 }
1229
1230
1231 /*******************************************************************
1232  *      DrawEscape [GDI32.@]
1233  *
1234  *
1235  */
1236 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
1237 {
1238     FIXME("DrawEscape, stub\n");
1239     return 0;
1240 }
1241
1242 /*******************************************************************
1243  *      NamedEscape [GDI32.@]
1244  */
1245 INT WINAPI NamedEscape( HDC hdc, LPCWSTR pDriver, INT nEscape, INT cbInput, LPCSTR lpszInData,
1246                         INT cbOutput, LPSTR lpszOutData )
1247 {
1248     FIXME("(%p, %s, %d, %d, %p, %d, %p)\n",
1249           hdc, wine_dbgstr_w(pDriver), nEscape, cbInput, lpszInData, cbOutput,
1250           lpszOutData);
1251     return 0;
1252 }
1253
1254 /*******************************************************************
1255  *      DdQueryDisplaySettingsUniqueness [GDI32.@]
1256  *      GdiEntry13                       [GDI32.@]
1257  */
1258 ULONG WINAPI DdQueryDisplaySettingsUniqueness(VOID)
1259 {
1260     static int warn_once;
1261
1262     if (!warn_once++)
1263         FIXME("stub\n");
1264     return 0;
1265 }