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 <stdarg.h>
  26 #include <string.h>
  27 #include <stdio.h>
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winreg.h"
  31 #include "ddrawgdi.h"
  32 #include "wine/winbase16.h"
  33
  34 #include "gdi_private.h"
  35 #include "wine/unicode.h"
  36 #include "wine/list.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  40
  41 struct graphics_driver
  42 {
  43     struct list             entry;
  44     HMODULE                 module;  /* module handle */
  45     DC_FUNCTIONS            funcs;
  46 };
  47
  48 static struct list drivers = LIST_INIT( drivers );
  49 static struct graphics_driver *display_driver;
  50
  51 static CRITICAL_SECTION driver_section;
  52 static CRITICAL_SECTION_DEBUG critsect_debug =
  53 {
  54     0, 0, &driver_section,
  55     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  56       0, 0, { (DWORD_PTR)(__FILE__ ": driver_section") }
  57 };
  58 static CRITICAL_SECTION driver_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  59
  60 /**********************************************************************
  61  *           create_driver
  62  *
  63  * Allocate and fill the driver structure for a given module.
  64  */
  65 static struct graphics_driver *create_driver( HMODULE module )
  66 {
  67     struct graphics_driver *driver;
  68
  69     if (!(driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver)))) return NULL;
  70     driver->module = module;
  71
  72     /* fill the function table */
  73     if (module)
  74     {
  75 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  76         GET_FUNC(AbortDoc);
  77         GET_FUNC(AbortPath);
  78         GET_FUNC(AlphaBlend);
  79         GET_FUNC(AngleArc);
  80         GET_FUNC(Arc);
  81         GET_FUNC(ArcTo);
  82         GET_FUNC(BeginPath);
  83         GET_FUNC(BitBlt);
  84         GET_FUNC(ChoosePixelFormat);
  85         GET_FUNC(Chord);
  86         GET_FUNC(CloseFigure);
  87         GET_FUNC(CreateBitmap);
  88         GET_FUNC(CreateDC);
  89         GET_FUNC(CreateDIBSection);
  90         GET_FUNC(DeleteBitmap);
  91         GET_FUNC(DeleteDC);
  92         GET_FUNC(DescribePixelFormat);
  93         GET_FUNC(DeviceCapabilities);
  94         GET_FUNC(Ellipse);
  95         GET_FUNC(EndDoc);
  96         GET_FUNC(EndPage);
  97         GET_FUNC(EndPath);
  98         GET_FUNC(EnumDeviceFonts);
  99         GET_FUNC(ExcludeClipRect);
 100         GET_FUNC(ExtDeviceMode);
 101         GET_FUNC(ExtEscape);
 102         GET_FUNC(ExtFloodFill);
 103         GET_FUNC(ExtSelectClipRgn);
 104         GET_FUNC(ExtTextOut);
 105         GET_FUNC(FillPath);
 106         GET_FUNC(FillRgn);
 107         GET_FUNC(FlattenPath);
 108         GET_FUNC(FrameRgn);
 109         GET_FUNC(GdiComment);
 110         GET_FUNC(GetBitmapBits);
 111         GET_FUNC(GetCharWidth);
 112         GET_FUNC(GetDIBColorTable);
 113         GET_FUNC(GetDIBits);
 114         GET_FUNC(GetDeviceCaps);
 115         GET_FUNC(GetDeviceGammaRamp);
 116         GET_FUNC(GetICMProfile);
 117         GET_FUNC(GetNearestColor);
 118         GET_FUNC(GetPixel);
 119         GET_FUNC(GetPixelFormat);
 120         GET_FUNC(GetSystemPaletteEntries);
 121         GET_FUNC(GetTextExtentExPoint);
 122         GET_FUNC(GetTextMetrics);
 123         GET_FUNC(IntersectClipRect);
 124         GET_FUNC(InvertRgn);
 125         GET_FUNC(LineTo);
 126         GET_FUNC(MoveTo);
 127         GET_FUNC(ModifyWorldTransform);
 128         GET_FUNC(OffsetClipRgn);
 129         GET_FUNC(OffsetViewportOrg);
 130         GET_FUNC(OffsetWindowOrg);
 131         GET_FUNC(PaintRgn);
 132         GET_FUNC(PatBlt);
 133         GET_FUNC(Pie);
 134         GET_FUNC(PolyBezier);
 135         GET_FUNC(PolyBezierTo);
 136         GET_FUNC(PolyDraw);
 137         GET_FUNC(PolyPolygon);
 138         GET_FUNC(PolyPolyline);
 139         GET_FUNC(Polygon);
 140         GET_FUNC(Polyline);
 141         GET_FUNC(PolylineTo);
 142         GET_FUNC(RealizeDefaultPalette);
 143         GET_FUNC(RealizePalette);
 144         GET_FUNC(Rectangle);
 145         GET_FUNC(ResetDC);
 146         GET_FUNC(RestoreDC);
 147         GET_FUNC(RoundRect);
 148         GET_FUNC(SaveDC);
 149         GET_FUNC(ScaleViewportExt);
 150         GET_FUNC(ScaleWindowExt);
 151         GET_FUNC(SelectBitmap);
 152         GET_FUNC(SelectBrush);
 153         GET_FUNC(SelectClipPath);
 154         GET_FUNC(SelectFont);
 155         GET_FUNC(SelectPalette);
 156         GET_FUNC(SelectPen);
 157         GET_FUNC(SetArcDirection);
 158         GET_FUNC(SetBitmapBits);
 159         GET_FUNC(SetBkColor);
 160         GET_FUNC(SetBkMode);
 161         GET_FUNC(SetDCBrushColor);
 162         GET_FUNC(SetDCPenColor);
 163         GET_FUNC(SetDIBColorTable);
 164         GET_FUNC(SetDIBits);
 165         GET_FUNC(SetDIBitsToDevice);
 166         GET_FUNC(SetDeviceClipping);
 167         GET_FUNC(SetDeviceGammaRamp);
 168         GET_FUNC(SetMapMode);
 169         GET_FUNC(SetMapperFlags);
 170         GET_FUNC(SetPixel);
 171         GET_FUNC(SetPixelFormat);
 172         GET_FUNC(SetPolyFillMode);
 173         GET_FUNC(SetROP2);
 174         GET_FUNC(SetRelAbs);
 175         GET_FUNC(SetStretchBltMode);
 176         GET_FUNC(SetTextAlign);
 177         GET_FUNC(SetTextCharacterExtra);
 178         GET_FUNC(SetTextColor);
 179         GET_FUNC(SetTextJustification);
 180         GET_FUNC(SetViewportExt);
 181         GET_FUNC(SetViewportOrg);
 182         GET_FUNC(SetWindowExt);
 183         GET_FUNC(SetWindowOrg);
 184         GET_FUNC(SetWorldTransform);
 185         GET_FUNC(StartDoc);
 186         GET_FUNC(StartPage);
 187         GET_FUNC(StretchBlt);
 188         GET_FUNC(StretchDIBits);
 189         GET_FUNC(StrokeAndFillPath);
 190         GET_FUNC(StrokePath);
 191         GET_FUNC(SwapBuffers);
 192         GET_FUNC(UnrealizePalette);
 193         GET_FUNC(WidenPath);
 194
 195         /* OpenGL32 */
 196         GET_FUNC(wglCreateContext);
 197         GET_FUNC(wglCreateContextAttribsARB);
 198         GET_FUNC(wglDeleteContext);
 199         GET_FUNC(wglGetProcAddress);
 200         GET_FUNC(wglGetPbufferDCARB);
 201         GET_FUNC(wglMakeContextCurrentARB);
 202         GET_FUNC(wglMakeCurrent);
 203         GET_FUNC(wglSetPixelFormatWINE);
 204         GET_FUNC(wglShareLists);
 205         GET_FUNC(wglUseFontBitmapsA);
 206         GET_FUNC(wglUseFontBitmapsW);
 207 #undef GET_FUNC
 208     }
 209     else memset( &driver->funcs, 0, sizeof(driver->funcs) );
 210
 211     return driver;
 212 }
 213
 214
 215 /**********************************************************************
 216  *           DRIVER_get_display_driver
 217  *
 218  * Special case for loading the display driver: get the name from the config file
 219  */
 220 const DC_FUNCTIONS *DRIVER_get_display_driver(void)
 221 {
 222     struct graphics_driver *driver;
 223     char buffer[MAX_PATH], libname[32], *name, *next;
 224     HMODULE module = 0;
 225     HKEY hkey;
 226
 227     if (display_driver) return &display_driver->funcs;  /* already loaded */
 228
 229     strcpy( buffer, "x11" );  /* default value */
 230     /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
 231     if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
 232     {
 233         DWORD type, count = sizeof(buffer);
 234         RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
 235         RegCloseKey( hkey );
 236     }
 237
 238     name = buffer;
 239     while (name)
 240     {
 241         next = strchr( name, ',' );
 242         if (next) *next++ = 0;
 243
 244         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 245         if ((module = LoadLibraryA( libname )) != 0) break;
 246         name = next;
 247     }
 248
 249     if (!(driver = create_driver( module )))
 250     {
 251         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 252         FreeLibrary( module );
 253         ExitProcess(1);
 254     }
 255     if (InterlockedCompareExchangePointer( (void **)&display_driver, driver, NULL ))
 256     {
 257         /* somebody beat us to it */
 258         FreeLibrary( driver->module );
 259         HeapFree( GetProcessHeap(), 0, driver );
 260     }
 261     return &display_driver->funcs;
 262 }
 263
 264
 265 /**********************************************************************
 266  *           DRIVER_load_driver
 267  */
 268 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 269 {
 270     HMODULE module;
 271     struct graphics_driver *driver, *new_driver;
 272     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 273     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 274
 275     /* display driver is a special case */
 276     if (!strcmpiW( name, displayW ) || !strcmpiW( name, display1W )) return DRIVER_get_display_driver();
 277
 278     if ((module = GetModuleHandleW( name )))
 279     {
 280         if (display_driver && display_driver->module == module) return &display_driver->funcs;
 281         EnterCriticalSection( &driver_section );
 282         LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
 283         {
 284             if (driver->module == module) goto done;
 285         }
 286         LeaveCriticalSection( &driver_section );
 287     }
 288
 289     if (!(module = LoadLibraryW( name ))) return NULL;
 290
 291     if (!(new_driver = create_driver( module )))
 292     {
 293         FreeLibrary( module );
 294         return NULL;
 295     }
 296
 297     /* check if someone else added it in the meantime */
 298     EnterCriticalSection( &driver_section );
 299     LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
 300     {
 301         if (driver->module != module) continue;
 302         FreeLibrary( module );
 303         HeapFree( GetProcessHeap(), 0, new_driver );
 304         goto done;
 305     }
 306     driver = new_driver;
 307     list_add_head( &drivers, &driver->entry );
 308     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 309 done:
 310     LeaveCriticalSection( &driver_section );
 311     return &driver->funcs;
 312 }
 313
 314
 315 /*****************************************************************************
 316  *      DRIVER_GetDriverName
 317  *
 318  */
 319 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 320 {
 321     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 322     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 323     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 324     static const WCHAR empty_strW[] = { 0 };
 325     WCHAR *p;
 326
 327     /* display is a special case */
 328     if (!strcmpiW( device, displayW ) ||
 329         !strcmpiW( device, display1W ))
 330     {
 331         lstrcpynW( driver, displayW, size );
 332         return TRUE;
 333     }
 334
 335     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 336     if(!size) {
 337         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 338         return FALSE;
 339     }
 340     p = strchrW(driver, ',');
 341     if(!p)
 342     {
 343         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 344         return FALSE;
 345     }
 346     *p = 0;
 347     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 348     return TRUE;
 349 }
 350
 351
 352 /***********************************************************************
 353  *           GdiConvertToDevmodeW    (GDI32.@)
 354  */
 355 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 356 {
 357     DEVMODEW *dmW;
 358     WORD dmW_size, dmA_size;
 359
 360     dmA_size = dmA->dmSize;
 361
 362     /* this is the minimal dmSize that XP accepts */
 363     if (dmA_size < FIELD_OFFSET(DEVMODEA, dmFields))
 364         return NULL;
 365
 366     if (dmA_size > sizeof(DEVMODEA))
 367         dmA_size = sizeof(DEVMODEA);
 368
 369     dmW_size = dmA_size + CCHDEVICENAME;
 370     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 371         dmW_size += CCHFORMNAME;
 372
 373     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 374     if (!dmW) return NULL;
 375
 376     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, -1,
 377                                    dmW->dmDeviceName, CCHDEVICENAME);
 378     /* copy slightly more, to avoid long computations */
 379     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA_size - CCHDEVICENAME);
 380
 381     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 382     {
 383         if (dmA->dmFields & DM_FORMNAME)
 384             MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, -1,
 385                                        dmW->dmFormName, CCHFORMNAME);
 386         else
 387             dmW->dmFormName[0] = 0;
 388
 389         if (dmA_size > FIELD_OFFSET(DEVMODEA, dmLogPixels))
 390             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA_size - FIELD_OFFSET(DEVMODEA, dmLogPixels));
 391     }
 392
 393     if (dmA->dmDriverExtra)
 394         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA_size, dmA->dmDriverExtra);
 395
 396     dmW->dmSize = dmW_size;
 397
 398     return dmW;
 399 }
 400
 401
 402 /*****************************************************************************
 403  *      @ [GDI32.100]
 404  *
 405  * This should thunk to 16-bit and simply call the proc with the given args.
 406  */
 407 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 408                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 409 {
 410     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 411     return -1;
 412 }
 413
 414 /*****************************************************************************
 415  *      @ [GDI32.101]
 416  *
 417  * This should load the correct driver for lpszDevice and calls this driver's
 418  * ExtDeviceModePropSheet proc.
 419  *
 420  * Note: The driver calls a callback routine for each property sheet page; these
 421  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 422  * The layout of this structure is:
 423  *
 424  * struct
 425  * {
 426  *   DWORD  nPages;
 427  *   DWORD  unknown;
 428  *   HPROPSHEETPAGE  pages[10];
 429  * };
 430  */
 431 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 432                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 433 {
 434     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 435     return -1;
 436 }
 437
 438 /*****************************************************************************
 439  *      @ [GDI32.102]
 440  *
 441  * This should load the correct driver for lpszDevice and call this driver's
 442  * ExtDeviceMode proc.
 443  *
 444  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 445  */
 446 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 447                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 448                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 449                                     LPSTR lpszProfile, DWORD fwMode )
 450 {
 451     WCHAR deviceW[300];
 452     WCHAR bufW[300];
 453     char buf[300];
 454     HDC hdc;
 455     DC *dc;
 456     INT ret = -1;
 457
 458     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
 459           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 460
 461     if (!lpszDevice) return -1;
 462     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 463
 464     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 465
 466     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 467
 468     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 469
 470     if ((dc = get_dc_ptr( hdc )))
 471     {
 472         if (dc->funcs->pExtDeviceMode)
 473             ret = dc->funcs->pExtDeviceMode( buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 474                                              lpdmInput, lpszProfile, fwMode );
 475         release_dc_ptr( dc );
 476     }
 477     DeleteDC( hdc );
 478     return ret;
 479 }
 480
 481 /****************************************************************************
 482  *      @ [GDI32.103]
 483  *
 484  * This should load the correct driver for lpszDevice and calls this driver's
 485  * AdvancedSetupDialog proc.
 486  */
 487 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 488                                           LPDEVMODEA devin, LPDEVMODEA devout )
 489 {
 490     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 491     return -1;
 492 }
 493
 494 /*****************************************************************************
 495  *      @ [GDI32.104]
 496  *
 497  * This should load the correct driver for lpszDevice and calls this driver's
 498  * DeviceCapabilities proc.
 499  *
 500  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 501  */
 502 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 503                                            WORD fwCapability, LPSTR lpszOutput,
 504                                            LPDEVMODEA lpdm )
 505 {
 506     WCHAR deviceW[300];
 507     WCHAR bufW[300];
 508     char buf[300];
 509     HDC hdc;
 510     DC *dc;
 511     INT ret = -1;
 512
 513     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 514
 515     if (!lpszDevice) return -1;
 516     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 517
 518     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 519
 520     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 521
 522     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 523
 524     if ((dc = get_dc_ptr( hdc )))
 525     {
 526         if (dc->funcs->pDeviceCapabilities)
 527             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 528                                                   fwCapability, lpszOutput, lpdm );
 529         release_dc_ptr( dc );
 530     }
 531     DeleteDC( hdc );
 532     return ret;
 533 }
 534
 535
 536 /************************************************************************
 537  *             Escape  [GDI32.@]
 538  */
 539 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 540 {
 541     INT ret;
 542     POINT *pt;
 543
 544     switch (escape)
 545     {
 546     case ABORTDOC:
 547         return AbortDoc( hdc );
 548
 549     case ENDDOC:
 550         return EndDoc( hdc );
 551
 552     case GETPHYSPAGESIZE:
 553         pt = out_data;
 554         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 555         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 556         return 1;
 557
 558     case GETPRINTINGOFFSET:
 559         pt = out_data;
 560         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 561         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 562         return 1;
 563
 564     case GETSCALINGFACTOR:
 565         pt = out_data;
 566         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 567         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 568         return 1;
 569
 570     case NEWFRAME:
 571         return EndPage( hdc );
 572
 573     case SETABORTPROC:
 574         return SetAbortProc( hdc, (ABORTPROC)in_data );
 575
 576     case STARTDOC:
 577         {
 578             DOCINFOA doc;
 579             char *name = NULL;
 580
 581             /* in_data may not be 0 terminated so we must copy it */
 582             if (in_data)
 583             {
 584                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 585                 memcpy( name, in_data, in_count );
 586                 name[in_count] = 0;
 587             }
 588             /* out_data is actually a pointer to the DocInfo structure and used as
 589              * a second input parameter */
 590             if (out_data) doc = *(DOCINFOA *)out_data;
 591             else
 592             {
 593                 doc.cbSize = sizeof(doc);
 594                 doc.lpszOutput = NULL;
 595                 doc.lpszDatatype = NULL;
 596                 doc.fwType = 0;
 597             }
 598             doc.lpszDocName = name;
 599             ret = StartDocA( hdc, &doc );
 600             HeapFree( GetProcessHeap(), 0, name );
 601             if (ret > 0) ret = StartPage( hdc );
 602             return ret;
 603         }
 604
 605     case QUERYESCSUPPORT:
 606         {
 607             const INT *ptr = (const INT *)in_data;
 608             if (in_count < sizeof(INT)) return 0;
 609             switch(*ptr)
 610             {
 611             case ABORTDOC:
 612             case ENDDOC:
 613             case GETPHYSPAGESIZE:
 614             case GETPRINTINGOFFSET:
 615             case GETSCALINGFACTOR:
 616             case NEWFRAME:
 617             case QUERYESCSUPPORT:
 618             case SETABORTPROC:
 619             case STARTDOC:
 620                 return TRUE;
 621             }
 622             break;
 623         }
 624     }
 625
 626     /* if not handled internally, pass it to the driver */
 627     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 628 }
 629
 630
 631 /******************************************************************************
 632  *              ExtEscape       [GDI32.@]
 633  *
 634  * Access capabilities of a particular device that are not available through GDI.
 635  *
 636  * PARAMS
 637  *    hdc         [I] Handle to device context
 638  *    nEscape     [I] Escape function
 639  *    cbInput     [I] Number of bytes in input structure
 640  *    lpszInData  [I] Pointer to input structure
 641  *    cbOutput    [I] Number of bytes in output structure
 642  *    lpszOutData [O] Pointer to output structure
 643  *
 644  * RETURNS
 645  *    Success: >0
 646  *    Not implemented: 0
 647  *    Failure: <0
 648  */
 649 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 650                       INT cbOutput, LPSTR lpszOutData )
 651 {
 652     INT ret = 0;
 653     DC * dc = get_dc_ptr( hdc );
 654     if (dc)
 655     {
 656         if (dc->funcs->pExtEscape)
 657             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 658         release_dc_ptr( dc );
 659     }
 660     return ret;
 661 }
 662
 663
 664 /*******************************************************************
 665  *      DrawEscape [GDI32.@]
 666  *
 667  *
 668  */
 669 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 670 {
 671     FIXME("DrawEscape, stub\n");
 672     return 0;
 673 }
 674
 675 /*******************************************************************
 676  *      NamedEscape [GDI32.@]
 677  */
 678 INT WINAPI NamedEscape( HDC hdc, LPCWSTR pDriver, INT nEscape, INT cbInput, LPCSTR lpszInData,
 679                         INT cbOutput, LPSTR lpszOutData )
 680 {
 681     FIXME("(%p, %s, %d, %d, %p, %d, %p)\n",
 682           hdc, wine_dbgstr_w(pDriver), nEscape, cbInput, lpszInData, cbOutput,
 683           lpszOutData);
 684     return 0;
 685 }
 686
 687 /*******************************************************************
 688  *      DdQueryDisplaySettingsUniqueness [GDI32.@]
 689  *      GdiEntry13                       [GDI32.@]
 690  */
 691 ULONG WINAPI DdQueryDisplaySettingsUniqueness(VOID)
 692 {
 693     static int warn_once;
 694
 695     if (!warn_once++)
 696         FIXME("stub\n");
 697     return 0;
 698 }