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