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