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