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 BOOL nulldrv_DeleteBitmap( HBITMAP bitmap )
 231 {
 232     return TRUE;
 233 }
 234
 235 static BOOL nulldrv_DeleteDC( PHYSDEV dev )
 236 {
 237     assert(0);  /* should never be called */
 238     return TRUE;
 239 }
 240
 241 static BOOL nulldrv_DeleteObject( PHYSDEV dev, HGDIOBJ obj )
 242 {
 243     return TRUE;
 244 }
 245
 246 static INT nulldrv_DescribePixelFormat( PHYSDEV dev, INT format, UINT size, PIXELFORMATDESCRIPTOR * descr )
 247 {
 248     return 0;
 249 }
 250
 251 static DWORD nulldrv_DeviceCapabilities( LPSTR buffer, LPCSTR device, LPCSTR port,
 252                                          WORD cap, LPSTR output, DEVMODEA *devmode )
 253 {
 254     return -1;
 255 }
 256
 257 static BOOL nulldrv_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
 258 {
 259     return TRUE;
 260 }
 261
 262 static INT nulldrv_EndDoc( PHYSDEV dev )
 263 {
 264     return 0;
 265 }
 266
 267 static INT nulldrv_EndPage( PHYSDEV dev )
 268 {
 269     return 0;
 270 }
 271
 272 static BOOL nulldrv_EnumFonts( PHYSDEV dev, LOGFONTW *logfont, FONTENUMPROCW proc, LPARAM lParam )
 273 {
 274     return TRUE;
 275 }
 276
 277 static INT nulldrv_EnumICMProfiles( PHYSDEV dev, ICMENUMPROCW func, LPARAM lparam )
 278 {
 279     return -1;
 280 }
 281
 282 static INT nulldrv_ExtDeviceMode( LPSTR buffer, HWND hwnd, DEVMODEA *output, LPSTR device,
 283                                   LPSTR port, DEVMODEA *input, LPSTR profile, DWORD mode )
 284 {
 285     return -1;
 286 }
 287
 288 static INT nulldrv_ExtEscape( PHYSDEV dev, INT escape, INT in_size, const void *in_data,
 289                                     INT out_size, void *out_data )
 290 {
 291     return 0;
 292 }
 293
 294 static BOOL nulldrv_ExtFloodFill( PHYSDEV dev, INT x, INT y, COLORREF color, UINT type )
 295 {
 296     return TRUE;
 297 }
 298
 299 static BOOL nulldrv_FontIsLinked( PHYSDEV dev )
 300 {
 301     return FALSE;
 302 }
 303
 304 static BOOL nulldrv_GdiComment( PHYSDEV dev, UINT size, const BYTE *data )
 305 {
 306     return FALSE;
 307 }
 308
 309 static BOOL nulldrv_GdiRealizationInfo( PHYSDEV dev, void *info )
 310 {
 311     return FALSE;
 312 }
 313
 314 static UINT nulldrv_GetBoundsRect( PHYSDEV dev, RECT *rect, UINT flags )
 315 {
 316     return DCB_RESET;
 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     SetLastError( ERROR_INVALID_PARAMETER );
 359     return FALSE;
 360 }
 361
 362 static DWORD nulldrv_GetFontData( PHYSDEV dev, DWORD table, DWORD offset, LPVOID buffer, DWORD length )
 363 {
 364     return FALSE;
 365 }
 366
 367 static DWORD nulldrv_GetFontUnicodeRanges( PHYSDEV dev, LPGLYPHSET glyphs )
 368 {
 369     return 0;
 370 }
 371
 372 static DWORD nulldrv_GetGlyphIndices( PHYSDEV dev, LPCWSTR str, INT count, LPWORD indices, DWORD flags )
 373 {
 374     return GDI_ERROR;
 375 }
 376
 377 static DWORD nulldrv_GetGlyphOutline( PHYSDEV dev, UINT ch, UINT format, LPGLYPHMETRICS metrics,
 378                                       DWORD size, LPVOID buffer, const MAT2 *mat )
 379 {
 380     return GDI_ERROR;
 381 }
 382
 383 static BOOL nulldrv_GetICMProfile( PHYSDEV dev, LPDWORD size, LPWSTR filename )
 384 {
 385     return FALSE;
 386 }
 387
 388 static DWORD nulldrv_GetKerningPairs( PHYSDEV dev, DWORD count, LPKERNINGPAIR pairs )
 389 {
 390     return 0;
 391 }
 392
 393 static UINT nulldrv_GetOutlineTextMetrics( PHYSDEV dev, UINT size, LPOUTLINETEXTMETRICW otm )
 394 {
 395     return 0;
 396 }
 397
 398 static INT nulldrv_GetPixelFormat( PHYSDEV dev )
 399 {
 400     return 0;
 401 }
 402
 403 static UINT nulldrv_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, PALETTEENTRY *entries )
 404 {
 405     return 0;
 406 }
 407
 408 static UINT nulldrv_GetTextCharsetInfo( PHYSDEV dev, LPFONTSIGNATURE fs, DWORD flags )
 409 {
 410     return DEFAULT_CHARSET;
 411 }
 412
 413 static BOOL nulldrv_GetTextExtentExPoint( PHYSDEV dev, LPCWSTR str, INT count, INT max_ext,
 414                                           INT *fit, INT *dx, SIZE *size )
 415 {
 416     return FALSE;
 417 }
 418
 419 static BOOL nulldrv_GetTextExtentExPointI( PHYSDEV dev, const WORD *indices, INT count, INT max_ext,
 420                                            INT *fit, INT *dx, SIZE *size )
 421 {
 422     return FALSE;
 423 }
 424
 425 static INT nulldrv_GetTextFace( PHYSDEV dev, INT size, LPWSTR name )
 426 {
 427     INT ret = 0;
 428     LOGFONTW font;
 429     HFONT hfont = GetCurrentObject( dev->hdc, OBJ_FONT );
 430
 431     if (GetObjectW( hfont, sizeof(font), &font ))
 432     {
 433         ret = strlenW( font.lfFaceName ) + 1;
 434         if (name)
 435         {
 436             lstrcpynW( name, font.lfFaceName, size );
 437             ret = min( size, ret );
 438         }
 439     }
 440     return ret;
 441 }
 442
 443 static BOOL nulldrv_GetTextMetrics( PHYSDEV dev, TEXTMETRICW *metrics )
 444 {
 445     return FALSE;
 446 }
 447
 448 static BOOL nulldrv_LineTo( PHYSDEV dev, INT x, INT y )
 449 {
 450     return TRUE;
 451 }
 452
 453 static BOOL nulldrv_MoveTo( PHYSDEV dev, INT x, INT y )
 454 {
 455     return TRUE;
 456 }
 457
 458 static BOOL nulldrv_PaintRgn( PHYSDEV dev, HRGN rgn )
 459 {
 460     return TRUE;
 461 }
 462
 463 static BOOL nulldrv_PatBlt( PHYSDEV dev, struct bitblt_coords *dst, DWORD rop )
 464 {
 465     return TRUE;
 466 }
 467
 468 static BOOL nulldrv_Pie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 469                          INT xstart, INT ystart, INT xend, INT yend )
 470 {
 471     return TRUE;
 472 }
 473
 474 static BOOL nulldrv_PolyPolygon( PHYSDEV dev, const POINT *points, const INT *counts, UINT polygons )
 475 {
 476     return TRUE;
 477 }
 478
 479 static BOOL nulldrv_PolyPolyline( PHYSDEV dev, const POINT *points, const DWORD *counts, DWORD lines )
 480 {
 481     return TRUE;
 482 }
 483
 484 static BOOL nulldrv_Polygon( PHYSDEV dev, const POINT *points, INT count )
 485 {
 486     INT counts[1] = { count };
 487
 488     return PolyPolygon( dev->hdc, points, counts, 1 );
 489 }
 490
 491 static BOOL nulldrv_Polyline( PHYSDEV dev, const POINT *points, INT count )
 492 {
 493     DWORD counts[1] = { count };
 494
 495     if (count < 0) return FALSE;
 496     return PolyPolyline( dev->hdc, points, counts, 1 );
 497 }
 498
 499 static UINT nulldrv_RealizeDefaultPalette( PHYSDEV dev )
 500 {
 501     return 0;
 502 }
 503
 504 static UINT nulldrv_RealizePalette( PHYSDEV dev, HPALETTE palette, BOOL primary )
 505 {
 506     return 0;
 507 }
 508
 509 static BOOL nulldrv_Rectangle( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
 510 {
 511     return TRUE;
 512 }
 513
 514 static HDC nulldrv_ResetDC( PHYSDEV dev, const DEVMODEW *devmode )
 515 {
 516     return 0;
 517 }
 518
 519 static BOOL nulldrv_RoundRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 520                                INT ell_width, INT ell_height )
 521 {
 522     return TRUE;
 523 }
 524
 525 static HBITMAP nulldrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
 526 {
 527     return bitmap;
 528 }
 529
 530 static HBRUSH nulldrv_SelectBrush( PHYSDEV dev, HBRUSH brush, const struct brush_pattern *pattern )
 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, const struct brush_pattern *pattern )
 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 UINT nulldrv_SetBoundsRect( PHYSDEV dev, RECT *rect, UINT flags )
 566 {
 567     return DCB_RESET;
 568 }
 569
 570 static COLORREF nulldrv_SetDCBrushColor( PHYSDEV dev, COLORREF color )
 571 {
 572     return color;
 573 }
 574
 575 static COLORREF nulldrv_SetDCPenColor( PHYSDEV dev, COLORREF color )
 576 {
 577     return color;
 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     SetLastError( ERROR_INVALID_PARAMETER );
 592     return FALSE;
 593 }
 594
 595 static DWORD nulldrv_SetMapperFlags( PHYSDEV dev, DWORD flags )
 596 {
 597     return flags;
 598 }
 599
 600 static COLORREF nulldrv_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
 601 {
 602     return color;
 603 }
 604
 605 static BOOL nulldrv_SetPixelFormat( PHYSDEV dev, INT format, const PIXELFORMATDESCRIPTOR *descr )
 606 {
 607     return FALSE;
 608 }
 609
 610 static INT nulldrv_SetPolyFillMode( PHYSDEV dev, INT mode )
 611 {
 612     return mode;
 613 }
 614
 615 static INT nulldrv_SetROP2( PHYSDEV dev, INT rop )
 616 {
 617     return rop;
 618 }
 619
 620 static INT nulldrv_SetRelAbs( PHYSDEV dev, INT mode )
 621 {
 622     return mode;
 623 }
 624
 625 static INT nulldrv_SetStretchBltMode( PHYSDEV dev, INT mode )
 626 {
 627     return mode;
 628 }
 629
 630 static UINT nulldrv_SetTextAlign( PHYSDEV dev, UINT align )
 631 {
 632     return align;
 633 }
 634
 635 static INT nulldrv_SetTextCharacterExtra( PHYSDEV dev, INT extra )
 636 {
 637     return extra;
 638 }
 639
 640 static COLORREF nulldrv_SetTextColor( PHYSDEV dev, COLORREF color )
 641 {
 642     return color;
 643 }
 644
 645 static BOOL nulldrv_SetTextJustification( PHYSDEV dev, INT extra, INT breaks )
 646 {
 647     return TRUE;
 648 }
 649
 650 static INT nulldrv_StartDoc( PHYSDEV dev, const DOCINFOW *info )
 651 {
 652     return 0;
 653 }
 654
 655 static INT nulldrv_StartPage( PHYSDEV dev )
 656 {
 657     return 1;
 658 }
 659
 660 static BOOL nulldrv_SwapBuffers( PHYSDEV dev )
 661 {
 662     return TRUE;
 663 }
 664
 665 static BOOL nulldrv_UnrealizePalette( HPALETTE palette )
 666 {
 667     return FALSE;
 668 }
 669
 670 static BOOL nulldrv_wglCopyContext( HGLRC ctx_src, HGLRC ctx_dst, UINT mask )
 671 {
 672     return FALSE;
 673 }
 674
 675 static HGLRC nulldrv_wglCreateContext( PHYSDEV dev )
 676 {
 677     return 0;
 678 }
 679
 680 static HGLRC nulldrv_wglCreateContextAttribsARB( PHYSDEV dev, HGLRC share_ctx, const int *attribs )
 681 {
 682     return 0;
 683 }
 684
 685 static BOOL nulldrv_wglDeleteContext( HGLRC ctx )
 686 {
 687     return FALSE;
 688 }
 689
 690 static PROC nulldrv_wglGetProcAddress( LPCSTR name )
 691 {
 692     return NULL;
 693 }
 694
 695 static HDC nulldrv_wglGetPbufferDCARB( PHYSDEV dev, void *pbuffer )
 696 {
 697     return 0;
 698 }
 699
 700 static BOOL nulldrv_wglMakeCurrent( PHYSDEV dev, HGLRC ctx )
 701 {
 702     return FALSE;
 703 }
 704
 705 static BOOL nulldrv_wglMakeContextCurrentARB( PHYSDEV dev_draw, PHYSDEV dev_read, HGLRC ctx )
 706 {
 707     return FALSE;
 708 }
 709
 710 static BOOL nulldrv_wglSetPixelFormatWINE( PHYSDEV dev, INT format, const PIXELFORMATDESCRIPTOR *descr )
 711 {
 712     return FALSE;
 713 }
 714
 715 static BOOL nulldrv_wglShareLists( HGLRC ctx1, HGLRC ctx2 )
 716 {
 717     return FALSE;
 718 }
 719
 720 static BOOL nulldrv_wglUseFontBitmapsA( PHYSDEV dev, DWORD start, DWORD count, DWORD base )
 721 {
 722     return FALSE;
 723 }
 724
 725 static BOOL nulldrv_wglUseFontBitmapsW( PHYSDEV dev, DWORD start, DWORD count, DWORD base )
 726 {
 727     return FALSE;
 728 }
 729
 730 const struct gdi_dc_funcs null_driver =
 731 {
 732     nulldrv_AbortDoc,                   /* pAbortDoc */
 733     nulldrv_AbortPath,                  /* pAbortPath */
 734     nulldrv_AlphaBlend,                 /* pAlphaBlend */
 735     nulldrv_AngleArc,                   /* pAngleArc */
 736     nulldrv_Arc,                        /* pArc */
 737     nulldrv_ArcTo,                      /* pArcTo */
 738     nulldrv_BeginPath,                  /* pBeginPath */
 739     nulldrv_BlendImage,                 /* pBlendImage */
 740     nulldrv_ChoosePixelFormat,          /* pChoosePixelFormat */
 741     nulldrv_Chord,                      /* pChord */
 742     nulldrv_CloseFigure,                /* pCloseFigure */
 743     nulldrv_CopyBitmap,                 /* pCopyBitmap */
 744     nulldrv_CreateBitmap,               /* pCreateBitmap */
 745     nulldrv_CreateCompatibleDC,         /* pCreateCompatibleDC */
 746     nulldrv_CreateDC,                   /* pCreateDC */
 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_GetBoundsRect,              /* pGetBoundsRect */
 772     nulldrv_GetCharABCWidths,           /* pGetCharABCWidths */
 773     nulldrv_GetCharABCWidthsI,          /* pGetCharABCWidthsI */
 774     nulldrv_GetCharWidth,               /* pGetCharWidth */
 775     nulldrv_GetDeviceCaps,              /* pGetDeviceCaps */
 776     nulldrv_GetDeviceGammaRamp,         /* pGetDeviceGammaRamp */
 777     nulldrv_GetFontData,                /* pGetFontData */
 778     nulldrv_GetFontUnicodeRanges,       /* pGetFontUnicodeRanges */
 779     nulldrv_GetGlyphIndices,            /* pGetGlyphIndices */
 780     nulldrv_GetGlyphOutline,            /* pGetGlyphOutline */
 781     nulldrv_GetICMProfile,              /* pGetICMProfile */
 782     nulldrv_GetImage,                   /* pGetImage */
 783     nulldrv_GetKerningPairs,            /* pGetKerningPairs */
 784     nulldrv_GetNearestColor,            /* pGetNearestColor */
 785     nulldrv_GetOutlineTextMetrics,      /* pGetOutlineTextMetrics */
 786     nulldrv_GetPixel,                   /* pGetPixel */
 787     nulldrv_GetPixelFormat,             /* pGetPixelFormat */
 788     nulldrv_GetSystemPaletteEntries,    /* pGetSystemPaletteEntries */
 789     nulldrv_GetTextCharsetInfo,         /* pGetTextCharsetInfo */
 790     nulldrv_GetTextExtentExPoint,       /* pGetTextExtentExPoint */
 791     nulldrv_GetTextExtentExPointI,      /* pGetTextExtentExPointI */
 792     nulldrv_GetTextFace,                /* pGetTextFace */
 793     nulldrv_GetTextMetrics,             /* pGetTextMetrics */
 794     nulldrv_GradientFill,               /* pGradientFill */
 795     nulldrv_IntersectClipRect,          /* pIntersectClipRect */
 796     nulldrv_InvertRgn,                  /* pInvertRgn */
 797     nulldrv_LineTo,                     /* pLineTo */
 798     nulldrv_ModifyWorldTransform,       /* pModifyWorldTransform */
 799     nulldrv_MoveTo,                     /* pMoveTo */
 800     nulldrv_OffsetClipRgn,              /* pOffsetClipRgn */
 801     nulldrv_OffsetViewportOrgEx,        /* pOffsetViewportOrg */
 802     nulldrv_OffsetWindowOrgEx,          /* pOffsetWindowOrg */
 803     nulldrv_PaintRgn,                   /* pPaintRgn */
 804     nulldrv_PatBlt,                     /* pPatBlt */
 805     nulldrv_Pie,                        /* pPie */
 806     nulldrv_PolyBezier,                 /* pPolyBezier */
 807     nulldrv_PolyBezierTo,               /* pPolyBezierTo */
 808     nulldrv_PolyDraw,                   /* pPolyDraw */
 809     nulldrv_PolyPolygon,                /* pPolyPolygon */
 810     nulldrv_PolyPolyline,               /* pPolyPolyline */
 811     nulldrv_Polygon,                    /* pPolygon */
 812     nulldrv_Polyline,                   /* pPolyline */
 813     nulldrv_PolylineTo,                 /* pPolylineTo */
 814     nulldrv_PutImage,                   /* pPutImage */
 815     nulldrv_RealizeDefaultPalette,      /* pRealizeDefaultPalette */
 816     nulldrv_RealizePalette,             /* pRealizePalette */
 817     nulldrv_Rectangle,                  /* pRectangle */
 818     nulldrv_ResetDC,                    /* pResetDC */
 819     nulldrv_RestoreDC,                  /* pRestoreDC */
 820     nulldrv_RoundRect,                  /* pRoundRect */
 821     nulldrv_SaveDC,                     /* pSaveDC */
 822     nulldrv_ScaleViewportExtEx,         /* pScaleViewportExt */
 823     nulldrv_ScaleWindowExtEx,           /* pScaleWindowExt */
 824     nulldrv_SelectBitmap,               /* pSelectBitmap */
 825     nulldrv_SelectBrush,                /* pSelectBrush */
 826     nulldrv_SelectClipPath,             /* pSelectClipPath */
 827     nulldrv_SelectFont,                 /* pSelectFont */
 828     nulldrv_SelectPalette,              /* pSelectPalette */
 829     nulldrv_SelectPen,                  /* pSelectPen */
 830     nulldrv_SetArcDirection,            /* pSetArcDirection */
 831     nulldrv_SetBkColor,                 /* pSetBkColor */
 832     nulldrv_SetBkMode,                  /* pSetBkMode */
 833     nulldrv_SetBoundsRect,              /* pSetBoundsRect */
 834     nulldrv_SetDCBrushColor,            /* pSetDCBrushColor */
 835     nulldrv_SetDCPenColor,              /* pSetDCPenColor */
 836     nulldrv_SetDIBitsToDevice,          /* pSetDIBitsToDevice */
 837     nulldrv_SetDeviceClipping,          /* pSetDeviceClipping */
 838     nulldrv_SetDeviceGammaRamp,         /* pSetDeviceGammaRamp */
 839     nulldrv_SetLayout,                  /* pSetLayout */
 840     nulldrv_SetMapMode,                 /* pSetMapMode */
 841     nulldrv_SetMapperFlags,             /* pSetMapperFlags */
 842     nulldrv_SetPixel,                   /* pSetPixel */
 843     nulldrv_SetPixelFormat,             /* pSetPixelFormat */
 844     nulldrv_SetPolyFillMode,            /* pSetPolyFillMode */
 845     nulldrv_SetROP2,                    /* pSetROP2 */
 846     nulldrv_SetRelAbs,                  /* pSetRelAbs */
 847     nulldrv_SetStretchBltMode,          /* pSetStretchBltMode */
 848     nulldrv_SetTextAlign,               /* pSetTextAlign */
 849     nulldrv_SetTextCharacterExtra,      /* pSetTextCharacterExtra */
 850     nulldrv_SetTextColor,               /* pSetTextColor */
 851     nulldrv_SetTextJustification,       /* pSetTextJustification */
 852     nulldrv_SetViewportExtEx,           /* pSetViewportExt */
 853     nulldrv_SetViewportOrgEx,           /* pSetViewportOrg */
 854     nulldrv_SetWindowExtEx,             /* pSetWindowExt */
 855     nulldrv_SetWindowOrgEx,             /* pSetWindowOrg */
 856     nulldrv_SetWorldTransform,          /* pSetWorldTransform */
 857     nulldrv_StartDoc,                   /* pStartDoc */
 858     nulldrv_StartPage,                  /* pStartPage */
 859     nulldrv_StretchBlt,                 /* pStretchBlt */
 860     nulldrv_StretchDIBits,              /* pStretchDIBits */
 861     nulldrv_StrokeAndFillPath,          /* pStrokeAndFillPath */
 862     nulldrv_StrokePath,                 /* pStrokePath */
 863     nulldrv_SwapBuffers,                /* pSwapBuffers */
 864     nulldrv_UnrealizePalette,           /* pUnrealizePalette */
 865     nulldrv_WidenPath,                  /* pWidenPath */
 866     nulldrv_wglCopyContext,             /* pwglCopyContext */
 867     nulldrv_wglCreateContext,           /* pwglCreateContext */
 868     nulldrv_wglCreateContextAttribsARB, /* pwglCreateContextAttribsARB */
 869     nulldrv_wglDeleteContext,           /* pwglDeleteContext */
 870     nulldrv_wglGetPbufferDCARB,         /* pwglGetPbufferDCARB */
 871     nulldrv_wglGetProcAddress,          /* pwglGetProcAddress */
 872     nulldrv_wglMakeContextCurrentARB,   /* pwglMakeContextCurrentARB */
 873     nulldrv_wglMakeCurrent,             /* pwglMakeCurrent */
 874     nulldrv_wglSetPixelFormatWINE,      /* pwglSetPixelFormatWINE */
 875     nulldrv_wglShareLists,              /* pwglShareLists */
 876     nulldrv_wglUseFontBitmapsA,         /* pwglUseFontBitmapsA */
 877     nulldrv_wglUseFontBitmapsW,         /* pwglUseFontBitmapsW */
 878 };
 879
 880
 881 /*****************************************************************************
 882  *      DRIVER_GetDriverName
 883  *
 884  */
 885 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 886 {
 887     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 888     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 889     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 890     static const WCHAR empty_strW[] = { 0 };
 891     WCHAR *p;
 892
 893     /* display is a special case */
 894     if (!strcmpiW( device, displayW ) ||
 895         !strcmpiW( device, display1W ))
 896     {
 897         lstrcpynW( driver, displayW, size );
 898         return TRUE;
 899     }
 900
 901     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 902     if(!size) {
 903         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 904         return FALSE;
 905     }
 906     p = strchrW(driver, ',');
 907     if(!p)
 908     {
 909         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 910         return FALSE;
 911     }
 912     *p = 0;
 913     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 914     return TRUE;
 915 }
 916
 917
 918 /***********************************************************************
 919  *           GdiConvertToDevmodeW    (GDI32.@)
 920  */
 921 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 922 {
 923     DEVMODEW *dmW;
 924     WORD dmW_size, dmA_size;
 925
 926     dmA_size = dmA->dmSize;
 927
 928     /* this is the minimal dmSize that XP accepts */
 929     if (dmA_size < FIELD_OFFSET(DEVMODEA, dmFields))
 930         return NULL;
 931
 932     if (dmA_size > sizeof(DEVMODEA))
 933         dmA_size = sizeof(DEVMODEA);
 934
 935     dmW_size = dmA_size + CCHDEVICENAME;
 936     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 937         dmW_size += CCHFORMNAME;
 938
 939     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 940     if (!dmW) return NULL;
 941
 942     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, -1,
 943                                    dmW->dmDeviceName, CCHDEVICENAME);
 944     /* copy slightly more, to avoid long computations */
 945     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA_size - CCHDEVICENAME);
 946
 947     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 948     {
 949         if (dmA->dmFields & DM_FORMNAME)
 950             MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, -1,
 951                                        dmW->dmFormName, CCHFORMNAME);
 952         else
 953             dmW->dmFormName[0] = 0;
 954
 955         if (dmA_size > FIELD_OFFSET(DEVMODEA, dmLogPixels))
 956             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA_size - FIELD_OFFSET(DEVMODEA, dmLogPixels));
 957     }
 958
 959     if (dmA->dmDriverExtra)
 960         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA_size, dmA->dmDriverExtra);
 961
 962     dmW->dmSize = dmW_size;
 963
 964     return dmW;
 965 }
 966
 967
 968 /*****************************************************************************
 969  *      @ [GDI32.100]
 970  *
 971  * This should thunk to 16-bit and simply call the proc with the given args.
 972  */
 973 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 974                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 975 {
 976     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 977     return -1;
 978 }
 979
 980 /*****************************************************************************
 981  *      @ [GDI32.101]
 982  *
 983  * This should load the correct driver for lpszDevice and calls this driver's
 984  * ExtDeviceModePropSheet proc.
 985  *
 986  * Note: The driver calls a callback routine for each property sheet page; these
 987  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 988  * The layout of this structure is:
 989  *
 990  * struct
 991  * {
 992  *   DWORD  nPages;
 993  *   DWORD  unknown;
 994  *   HPROPSHEETPAGE  pages[10];
 995  * };
 996  */
 997 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 998                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 999 {
1000     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
1001     return -1;
1002 }
1003
1004 /*****************************************************************************
1005  *      @ [GDI32.102]
1006  *
1007  * This should load the correct driver for lpszDevice and call this driver's
1008  * ExtDeviceMode proc.
1009  *
1010  * FIXME: convert ExtDeviceMode to unicode in the driver interface
1011  */
1012 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
1013                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
1014                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
1015                                     LPSTR lpszProfile, DWORD fwMode )
1016 {
1017     WCHAR deviceW[300];
1018     WCHAR bufW[300];
1019     char buf[300];
1020     HDC hdc;
1021     DC *dc;
1022     INT ret = -1;
1023
1024     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
1025           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
1026
1027     if (!lpszDevice) return -1;
1028     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
1029
1030     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
1031
1032     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
1033
1034     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
1035
1036     if ((dc = get_dc_ptr( hdc )))
1037     {
1038         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pExtDeviceMode );
1039         ret = physdev->funcs->pExtDeviceMode( buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
1040                                               lpdmInput, lpszProfile, fwMode );
1041         release_dc_ptr( dc );
1042     }
1043     DeleteDC( hdc );
1044     return ret;
1045 }
1046
1047 /****************************************************************************
1048  *      @ [GDI32.103]
1049  *
1050  * This should load the correct driver for lpszDevice and calls this driver's
1051  * AdvancedSetupDialog proc.
1052  */
1053 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
1054                                           LPDEVMODEA devin, LPDEVMODEA devout )
1055 {
1056     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
1057     return -1;
1058 }
1059
1060 /*****************************************************************************
1061  *      @ [GDI32.104]
1062  *
1063  * This should load the correct driver for lpszDevice and calls this driver's
1064  * DeviceCapabilities proc.
1065  *
1066  * FIXME: convert DeviceCapabilities to unicode in the driver interface
1067  */
1068 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
1069                                            WORD fwCapability, LPSTR lpszOutput,
1070                                            LPDEVMODEA lpdm )
1071 {
1072     WCHAR deviceW[300];
1073     WCHAR bufW[300];
1074     char buf[300];
1075     HDC hdc;
1076     DC *dc;
1077     INT ret = -1;
1078
1079     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
1080
1081     if (!lpszDevice) return -1;
1082     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
1083
1084     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
1085
1086     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
1087
1088     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
1089
1090     if ((dc = get_dc_ptr( hdc )))
1091     {
1092         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pDeviceCapabilities );
1093         ret = physdev->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
1094                                                    fwCapability, lpszOutput, lpdm );
1095         release_dc_ptr( dc );
1096     }
1097     DeleteDC( hdc );
1098     return ret;
1099 }
1100
1101
1102 /************************************************************************
1103  *             Escape  [GDI32.@]
1104  */
1105 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
1106 {
1107     INT ret;
1108     POINT *pt;
1109
1110     switch (escape)
1111     {
1112     case ABORTDOC:
1113         return AbortDoc( hdc );
1114
1115     case ENDDOC:
1116         return EndDoc( hdc );
1117
1118     case GETPHYSPAGESIZE:
1119         pt = out_data;
1120         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
1121         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
1122         return 1;
1123
1124     case GETPRINTINGOFFSET:
1125         pt = out_data;
1126         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
1127         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
1128         return 1;
1129
1130     case GETSCALINGFACTOR:
1131         pt = out_data;
1132         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
1133         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
1134         return 1;
1135
1136     case NEWFRAME:
1137         return EndPage( hdc );
1138
1139     case SETABORTPROC:
1140         return SetAbortProc( hdc, (ABORTPROC)in_data );
1141
1142     case STARTDOC:
1143         {
1144             DOCINFOA doc;
1145             char *name = NULL;
1146
1147             /* in_data may not be 0 terminated so we must copy it */
1148             if (in_data)
1149             {
1150                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
1151                 memcpy( name, in_data, in_count );
1152                 name[in_count] = 0;
1153             }
1154             /* out_data is actually a pointer to the DocInfo structure and used as
1155              * a second input parameter */
1156             if (out_data) doc = *(DOCINFOA *)out_data;
1157             else
1158             {
1159                 doc.cbSize = sizeof(doc);
1160                 doc.lpszOutput = NULL;
1161                 doc.lpszDatatype = NULL;
1162                 doc.fwType = 0;
1163             }
1164             doc.lpszDocName = name;
1165             ret = StartDocA( hdc, &doc );
1166             HeapFree( GetProcessHeap(), 0, name );
1167             if (ret > 0) ret = StartPage( hdc );
1168             return ret;
1169         }
1170
1171     case QUERYESCSUPPORT:
1172         {
1173             const INT *ptr = (const INT *)in_data;
1174             if (in_count < sizeof(INT)) return 0;
1175             switch(*ptr)
1176             {
1177             case ABORTDOC:
1178             case ENDDOC:
1179             case GETPHYSPAGESIZE:
1180             case GETPRINTINGOFFSET:
1181             case GETSCALINGFACTOR:
1182             case NEWFRAME:
1183             case QUERYESCSUPPORT:
1184             case SETABORTPROC:
1185             case STARTDOC:
1186                 return TRUE;
1187             }
1188             break;
1189         }
1190     }
1191
1192     /* if not handled internally, pass it to the driver */
1193     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
1194 }
1195
1196
1197 /******************************************************************************
1198  *              ExtEscape       [GDI32.@]
1199  *
1200  * Access capabilities of a particular device that are not available through GDI.
1201  *
1202  * PARAMS
1203  *    hdc         [I] Handle to device context
1204  *    nEscape     [I] Escape function
1205  *    cbInput     [I] Number of bytes in input structure
1206  *    lpszInData  [I] Pointer to input structure
1207  *    cbOutput    [I] Number of bytes in output structure
1208  *    lpszOutData [O] Pointer to output structure
1209  *
1210  * RETURNS
1211  *    Success: >0
1212  *    Not implemented: 0
1213  *    Failure: <0
1214  */
1215 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
1216                       INT cbOutput, LPSTR lpszOutData )
1217 {
1218     INT ret = 0;
1219     DC * dc = get_dc_ptr( hdc );
1220
1221     if (dc)
1222     {
1223         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pExtEscape );
1224         update_dc( dc );
1225         ret = physdev->funcs->pExtEscape( physdev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
1226         release_dc_ptr( dc );
1227     }
1228     return ret;
1229 }
1230
1231
1232 /*******************************************************************
1233  *      DrawEscape [GDI32.@]
1234  *
1235  *
1236  */
1237 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
1238 {
1239     FIXME("DrawEscape, stub\n");
1240     return 0;
1241 }
1242
1243 /*******************************************************************
1244  *      NamedEscape [GDI32.@]
1245  */
1246 INT WINAPI NamedEscape( HDC hdc, LPCWSTR pDriver, INT nEscape, INT cbInput, LPCSTR lpszInData,
1247                         INT cbOutput, LPSTR lpszOutData )
1248 {
1249     FIXME("(%p, %s, %d, %d, %p, %d, %p)\n",
1250           hdc, wine_dbgstr_w(pDriver), nEscape, cbInput, lpszInData, cbOutput,
1251           lpszOutData);
1252     return 0;
1253 }
1254
1255 /*******************************************************************
1256  *      DdQueryDisplaySettingsUniqueness [GDI32.@]
1257  *      GdiEntry13                       [GDI32.@]
1258  */
1259 ULONG WINAPI DdQueryDisplaySettingsUniqueness(VOID)
1260 {
1261     static int warn_once;
1262
1263     if (!warn_once++)
1264         FIXME("stub\n");
1265     return 0;
1266 }