dlls/gdi/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winreg.h"
  30
  31 #include "gdi.h"
  32 #include "gdi_private.h"
  33 #include "wine/unicode.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  37
  38 struct graphics_driver
  39 {
  40     struct graphics_driver *next;
  41     struct graphics_driver *prev;
  42     HMODULE                 module;  /* module handle */
  43     unsigned int            count;   /* reference count */
  44     DC_FUNCTIONS            funcs;
  45 };
  46
  47 static struct graphics_driver *first_driver;
  48 static struct graphics_driver *display_driver;
  49
  50 static CRITICAL_SECTION driver_section;
  51 static CRITICAL_SECTION_DEBUG critsect_debug =
  52 {
  53     0, 0, &driver_section,
  54     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  55       0, 0, { 0, (DWORD)(__FILE__ ": driver_section") }
  56 };
  57 static CRITICAL_SECTION driver_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  58
  59 /**********************************************************************
  60  *           create_driver
  61  *
  62  * Allocate and fill the driver structure for a given module.
  63  */
  64 static struct graphics_driver *create_driver( HMODULE module )
  65 {
  66     struct graphics_driver *driver;
  67
  68     if (!(driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver)))) return NULL;
  69     driver->next   = NULL;
  70     driver->prev   = NULL;
  71     driver->module = module;
  72     driver->count  = 1;
  73
  74     /* fill the function table */
  75
  76 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  77
  78     GET_FUNC(AbortDoc);
  79     GET_FUNC(AbortPath);
  80     GET_FUNC(AngleArc);
  81     GET_FUNC(Arc);
  82     GET_FUNC(ArcTo);
  83     GET_FUNC(BeginPath);
  84     GET_FUNC(BitBlt);
  85     GET_FUNC(ChoosePixelFormat);
  86     GET_FUNC(Chord);
  87     GET_FUNC(CloseFigure);
  88     GET_FUNC(CreateBitmap);
  89     GET_FUNC(CreateDC);
  90     GET_FUNC(CreateDIBSection);
  91     GET_FUNC(DeleteBitmap);
  92     GET_FUNC(DeleteDC);
  93     GET_FUNC(DescribePixelFormat);
  94     GET_FUNC(DeviceCapabilities);
  95     GET_FUNC(Ellipse);
  96     GET_FUNC(EndDoc);
  97     GET_FUNC(EndPage);
  98     GET_FUNC(EndPath);
  99     GET_FUNC(EnumDeviceFonts);
 100     GET_FUNC(ExcludeClipRect);
 101     GET_FUNC(ExtDeviceMode);
 102     GET_FUNC(ExtEscape);
 103     GET_FUNC(ExtFloodFill);
 104     GET_FUNC(ExtSelectClipRgn);
 105     GET_FUNC(ExtTextOut);
 106     GET_FUNC(FillPath);
 107     GET_FUNC(FillRgn);
 108     GET_FUNC(FlattenPath);
 109     GET_FUNC(FrameRgn);
 110     GET_FUNC(GdiComment);
 111     GET_FUNC(GetBitmapBits);
 112     GET_FUNC(GetCharWidth);
 113     GET_FUNC(GetDCOrgEx);
 114     GET_FUNC(GetDIBColorTable);
 115     GET_FUNC(GetDIBits);
 116     GET_FUNC(GetDeviceCaps);
 117     GET_FUNC(GetDeviceGammaRamp);
 118     GET_FUNC(GetNearestColor);
 119     GET_FUNC(GetPixel);
 120     GET_FUNC(GetPixelFormat);
 121     GET_FUNC(GetSystemPaletteEntries);
 122     GET_FUNC(GetTextExtentPoint);
 123     GET_FUNC(GetTextMetrics);
 124     GET_FUNC(IntersectClipRect);
 125     GET_FUNC(InvertRgn);
 126     GET_FUNC(LineTo);
 127     GET_FUNC(MoveTo);
 128     GET_FUNC(ModifyWorldTransform);
 129     GET_FUNC(OffsetClipRgn);
 130     GET_FUNC(OffsetViewportOrg);
 131     GET_FUNC(OffsetWindowOrg);
 132     GET_FUNC(PaintRgn);
 133     GET_FUNC(PatBlt);
 134     GET_FUNC(Pie);
 135     GET_FUNC(PolyBezier);
 136     GET_FUNC(PolyBezierTo);
 137     GET_FUNC(PolyDraw);
 138     GET_FUNC(PolyPolygon);
 139     GET_FUNC(PolyPolyline);
 140     GET_FUNC(Polygon);
 141     GET_FUNC(Polyline);
 142     GET_FUNC(PolylineTo);
 143     GET_FUNC(RealizeDefaultPalette);
 144     GET_FUNC(RealizePalette);
 145     GET_FUNC(Rectangle);
 146     GET_FUNC(ResetDC);
 147     GET_FUNC(RestoreDC);
 148     GET_FUNC(RoundRect);
 149     GET_FUNC(SaveDC);
 150     GET_FUNC(ScaleViewportExt);
 151     GET_FUNC(ScaleWindowExt);
 152     GET_FUNC(SelectBitmap);
 153     GET_FUNC(SelectBrush);
 154     GET_FUNC(SelectClipPath);
 155     GET_FUNC(SelectFont);
 156     GET_FUNC(SelectPalette);
 157     GET_FUNC(SelectPen);
 158     GET_FUNC(SetArcDirection);
 159     GET_FUNC(SetBitmapBits);
 160     GET_FUNC(SetBkColor);
 161     GET_FUNC(SetBkMode);
 162     GET_FUNC(SetDCBrushColor);
 163     GET_FUNC(SetDCOrg);
 164     GET_FUNC(SetDCPenColor);
 165     GET_FUNC(SetDIBColorTable);
 166     GET_FUNC(SetDIBits);
 167     GET_FUNC(SetDIBitsToDevice);
 168     GET_FUNC(SetDeviceClipping);
 169     GET_FUNC(SetDeviceGammaRamp);
 170     GET_FUNC(SetMapMode);
 171     GET_FUNC(SetMapperFlags);
 172     GET_FUNC(SetPixel);
 173     GET_FUNC(SetPixelFormat);
 174     GET_FUNC(SetPolyFillMode);
 175     GET_FUNC(SetROP2);
 176     GET_FUNC(SetRelAbs);
 177     GET_FUNC(SetStretchBltMode);
 178     GET_FUNC(SetTextAlign);
 179     GET_FUNC(SetTextCharacterExtra);
 180     GET_FUNC(SetTextColor);
 181     GET_FUNC(SetTextJustification);
 182     GET_FUNC(SetViewportExt);
 183     GET_FUNC(SetViewportOrg);
 184     GET_FUNC(SetWindowExt);
 185     GET_FUNC(SetWindowOrg);
 186     GET_FUNC(SetWorldTransform);
 187     GET_FUNC(StartDoc);
 188     GET_FUNC(StartPage);
 189     GET_FUNC(StretchBlt);
 190     GET_FUNC(StretchDIBits);
 191     GET_FUNC(StrokeAndFillPath);
 192     GET_FUNC(StrokePath);
 193     GET_FUNC(SwapBuffers);
 194     GET_FUNC(WidenPath);
 195 #undef GET_FUNC
 196
 197     /* add it to the list */
 198     driver->prev = NULL;
 199     if ((driver->next = first_driver)) driver->next->prev = driver;
 200     first_driver = driver;
 201     return driver;
 202 }
 203
 204
 205 /**********************************************************************
 206  *           load_display_driver
 207  *
 208  * Special case for loading the display driver: get the name from the config file
 209  */
 210 static struct graphics_driver *load_display_driver(void)
 211 {
 212     char buffer[MAX_PATH];
 213     HMODULE module;
 214     HKEY hkey;
 215
 216     if (display_driver)  /* already loaded */
 217     {
 218         display_driver->count++;
 219         return display_driver;
 220     }
 221
 222     strcpy( buffer, "x11drv" );  /* default value */
 223     if (!RegOpenKeyA( HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\Wine", &hkey ))
 224     {
 225         DWORD type, count = sizeof(buffer);
 226         RegQueryValueExA( hkey, "GraphicsDriver", 0, &type, buffer, &count );
 227         RegCloseKey( hkey );
 228     }
 229
 230     if (!(module = LoadLibraryA( buffer )))
 231     {
 232         MESSAGE( "Could not load graphics driver '%s'\n", buffer );
 233         return NULL;
 234     }
 235
 236     if (!(display_driver = create_driver( module )))
 237     {
 238         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 239         FreeLibrary( module );
 240         return NULL;
 241     }
 242
 243     display_driver->count++;  /* we don't want to free it */
 244     return display_driver;
 245 }
 246
 247
 248 /**********************************************************************
 249  *           DRIVER_load_driver
 250  */
 251 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 252 {
 253     HMODULE module;
 254     struct graphics_driver *driver;
 255     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 256
 257     EnterCriticalSection( &driver_section );
 258
 259     /* display driver is a special case */
 260     if (!strcmpiW( name, displayW ))
 261     {
 262         driver = load_display_driver();
 263         LeaveCriticalSection( &driver_section );
 264         return &driver->funcs;
 265     }
 266
 267     if ((module = GetModuleHandleW( name )))
 268     {
 269         for (driver = first_driver; driver; driver = driver->next)
 270         {
 271             if (driver->module == module)
 272             {
 273                 driver->count++;
 274                 LeaveCriticalSection( &driver_section );
 275                 return &driver->funcs;
 276             }
 277         }
 278     }
 279
 280     if (!(module = LoadLibraryW( name )))
 281     {
 282         LeaveCriticalSection( &driver_section );
 283         return NULL;
 284     }
 285
 286     if (!(driver = create_driver( module )))
 287     {
 288         FreeLibrary( module );
 289         LeaveCriticalSection( &driver_section );
 290         return NULL;
 291     }
 292
 293     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 294     LeaveCriticalSection( &driver_section );
 295     return &driver->funcs;
 296 }
 297
 298
 299 /**********************************************************************
 300  *           DRIVER_get_driver
 301  *
 302  * Get a new copy of an existing driver.
 303  */
 304 const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs )
 305 {
 306     struct graphics_driver *driver;
 307
 308     EnterCriticalSection( &driver_section );
 309     for (driver = first_driver; driver; driver = driver->next)
 310         if (&driver->funcs == funcs) break;
 311     if (!driver) ERR( "driver not found, trouble ahead\n" );
 312     driver->count++;
 313     LeaveCriticalSection( &driver_section );
 314     return funcs;
 315 }
 316
 317
 318 /**********************************************************************
 319  *           DRIVER_release_driver
 320  *
 321  * Release a driver by decrementing ref count and freeing it if needed.
 322  */
 323 void DRIVER_release_driver( const DC_FUNCTIONS *funcs )
 324 {
 325     struct graphics_driver *driver;
 326
 327     EnterCriticalSection( &driver_section );
 328
 329     for (driver = first_driver; driver; driver = driver->next)
 330         if (&driver->funcs == funcs) break;
 331
 332     if (!driver) goto done;
 333     if (--driver->count) goto done;
 334
 335     /* removed last reference, free it */
 336     if (driver->next) driver->next->prev = driver->prev;
 337     if (driver->prev) driver->prev->next = driver->next;
 338     else first_driver = driver->next;
 339     if (driver == display_driver) display_driver = NULL;
 340
 341     FreeLibrary( driver->module );
 342     HeapFree( GetProcessHeap(), 0, driver );
 343  done:
 344     LeaveCriticalSection( &driver_section );
 345 }
 346
 347
 348 /*****************************************************************************
 349  *      DRIVER_GetDriverName
 350  *
 351  */
 352 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 353 {
 354     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 355     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 356     static const WCHAR empty_strW[] = { 0 };
 357     WCHAR *p;
 358
 359     /* display is a special case */
 360     if (!strcmpiW( device, displayW ))
 361     {
 362         lstrcpynW( driver, displayW, size );
 363         return TRUE;
 364     }
 365
 366     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 367     if(!size) {
 368         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 369         return FALSE;
 370     }
 371     p = strchrW(driver, ',');
 372     if(!p)
 373     {
 374         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 375         return FALSE;
 376     }
 377     *p = 0;
 378     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 379     return TRUE;
 380 }
 381
 382
 383 /***********************************************************************
 384  *           GdiConvertToDevmodeW    (GDI32.@)
 385  */
 386 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 387 {
 388     DEVMODEW *dmW;
 389     WORD dmW_size;
 390
 391     dmW_size = dmA->dmSize + CCHDEVICENAME;
 392     if (dmA->dmSize >= (char *)dmA->dmFormName - (char *)dmA + CCHFORMNAME)
 393         dmW_size += CCHFORMNAME;
 394
 395     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 396     if (!dmW) return NULL;
 397
 398     MultiByteToWideChar(CP_ACP, 0, dmA->dmDeviceName, CCHDEVICENAME,
 399                                    dmW->dmDeviceName, CCHDEVICENAME);
 400     /* copy slightly more, to avoid long computations */
 401     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA->dmSize - CCHDEVICENAME);
 402
 403     if (dmA->dmSize >= (char *)dmA->dmFormName - (char *)dmA + CCHFORMNAME)
 404     {
 405         MultiByteToWideChar(CP_ACP, 0, dmA->dmFormName, CCHFORMNAME,
 406                                        dmW->dmFormName, CCHFORMNAME);
 407         if (dmA->dmSize > (char *)&dmA->dmLogPixels - (char *)dmA)
 408             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA->dmSize - ((char *)&dmA->dmLogPixels - (char *)dmA));
 409     }
 410
 411     if (dmA->dmDriverExtra)
 412         memcpy((char *)dmW + dmW_size, (char *)dmA + dmA->dmSize, dmA->dmDriverExtra);
 413
 414     dmW->dmSize = dmW_size;
 415
 416     return dmW;
 417 }
 418
 419
 420 /*****************************************************************************
 421  *      @ [GDI32.100]
 422  *
 423  * This should thunk to 16-bit and simply call the proc with the given args.
 424  */
 425 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 426                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 427 {
 428     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 429     return -1;
 430 }
 431
 432 /*****************************************************************************
 433  *      @ [GDI32.101]
 434  *
 435  * This should load the correct driver for lpszDevice and calls this driver's
 436  * ExtDeviceModePropSheet proc.
 437  *
 438  * Note: The driver calls a callback routine for each property sheet page; these
 439  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 440  * The layout of this structure is:
 441  *
 442  * struct
 443  * {
 444  *   DWORD  nPages;
 445  *   DWORD  unknown;
 446  *   HPROPSHEETPAGE  pages[10];
 447  * };
 448  */
 449 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 450                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 451 {
 452     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 453     return -1;
 454 }
 455
 456 /*****************************************************************************
 457  *      @ [GDI32.102]
 458  *
 459  * This should load the correct driver for lpszDevice and calls this driver's
 460  * ExtDeviceMode proc.
 461  *
 462  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 463  */
 464 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 465                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 466                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 467                                     LPSTR lpszProfile, DWORD fwMode )
 468 {
 469     WCHAR deviceW[300];
 470     WCHAR bufW[300];
 471     char buf[300];
 472     HDC hdc;
 473     DC *dc;
 474     INT ret = -1;
 475     INT (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 476
 477     TRACE("(%p, %p, %s, %s, %p, %s, %ld)\n",
 478           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 479
 480     if (!lpszDevice) return -1;
 481     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 482
 483     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 484
 485     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 486
 487     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 488
 489     if ((dc = DC_GetDCPtr( hdc )))
 490     {
 491         pExtDeviceMode = dc->funcs->pExtDeviceMode;
 492         GDI_ReleaseObj( hdc );
 493         if (pExtDeviceMode)
 494             ret = pExtDeviceMode(buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 495                                             lpdmInput, lpszProfile, fwMode);
 496     }
 497     DeleteDC( hdc );
 498     return ret;
 499 }
 500
 501 /****************************************************************************
 502  *      @ [GDI32.103]
 503  *
 504  * This should load the correct driver for lpszDevice and calls this driver's
 505  * AdvancedSetupDialog proc.
 506  */
 507 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 508                                           LPDEVMODEA devin, LPDEVMODEA devout )
 509 {
 510     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 511     return -1;
 512 }
 513
 514 /*****************************************************************************
 515  *      @ [GDI32.104]
 516  *
 517  * This should load the correct driver for lpszDevice and calls this driver's
 518  * DeviceCapabilities proc.
 519  *
 520  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 521  */
 522 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 523                                            WORD fwCapability, LPSTR lpszOutput,
 524                                            LPDEVMODEA lpdm )
 525 {
 526     WCHAR deviceW[300];
 527     WCHAR bufW[300];
 528     char buf[300];
 529     HDC hdc;
 530     DC *dc;
 531     INT ret = -1;
 532
 533     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 534
 535     if (!lpszDevice) return -1;
 536     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 537
 538     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 539
 540     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 541
 542     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 543
 544     if ((dc = DC_GetDCPtr( hdc )))
 545     {
 546         if (dc->funcs->pDeviceCapabilities)
 547             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 548                                                   fwCapability, lpszOutput, lpdm );
 549         GDI_ReleaseObj( hdc );
 550     }
 551     DeleteDC( hdc );
 552     return ret;
 553 }
 554
 555
 556 /************************************************************************
 557  *             Escape  [GDI32.@]
 558  */
 559 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 560 {
 561     INT ret;
 562     POINT *pt;
 563
 564     switch (escape)
 565     {
 566     case ABORTDOC:
 567         return AbortDoc( hdc );
 568
 569     case ENDDOC:
 570         return EndDoc( hdc );
 571
 572     case GETPHYSPAGESIZE:
 573         pt = out_data;
 574         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 575         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 576         return 1;
 577
 578     case GETPRINTINGOFFSET:
 579         pt = out_data;
 580         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 581         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 582         return 1;
 583
 584     case GETSCALINGFACTOR:
 585         pt = out_data;
 586         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 587         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 588         return 1;
 589
 590     case NEWFRAME:
 591         return EndPage( hdc );
 592
 593     case SETABORTPROC:
 594         return SetAbortProc( hdc, (ABORTPROC)in_data );
 595
 596     case STARTDOC:
 597         {
 598             DOCINFOA doc;
 599             char *name = NULL;
 600
 601             /* in_data may not be 0 terminated so we must copy it */
 602             if (in_data)
 603             {
 604                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 605                 memcpy( name, in_data, in_count );
 606                 name[in_count] = 0;
 607             }
 608             /* out_data is actually a pointer to the DocInfo structure and used as
 609              * a second input parameter */
 610             if (out_data) doc = *(DOCINFOA *)out_data;
 611             else
 612             {
 613                 doc.cbSize = sizeof(doc);
 614                 doc.lpszOutput = NULL;
 615                 doc.lpszDatatype = NULL;
 616                 doc.fwType = 0;
 617             }
 618             doc.lpszDocName = name;
 619             ret = StartDocA( hdc, &doc );
 620             if (name) HeapFree( GetProcessHeap(), 0, name );
 621             if (ret > 0) ret = StartPage( hdc );
 622             return ret;
 623         }
 624
 625     case QUERYESCSUPPORT:
 626         {
 627             INT *ptr = (INT *)in_data;
 628             if (in_count < sizeof(INT)) return 0;
 629             switch(*ptr)
 630             {
 631             case ABORTDOC:
 632             case ENDDOC:
 633             case GETPHYSPAGESIZE:
 634             case GETPRINTINGOFFSET:
 635             case GETSCALINGFACTOR:
 636             case NEWFRAME:
 637             case QUERYESCSUPPORT:
 638             case SETABORTPROC:
 639             case STARTDOC:
 640                 return TRUE;
 641             }
 642             break;
 643         }
 644     }
 645
 646     /* if not handled internally, pass it to the driver */
 647     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 648 }
 649
 650
 651 /******************************************************************************
 652  *              ExtEscape       [GDI32.@]
 653  *
 654  * PARAMS
 655  *    hdc         [I] Handle to device context
 656  *    nEscape     [I] Escape function
 657  *    cbInput     [I] Number of bytes in input structure
 658  *    lpszInData  [I] Pointer to input structure
 659  *    cbOutput    [I] Number of bytes in output structure
 660  *    lpszOutData [O] Pointer to output structure
 661  *
 662  * RETURNS
 663  *    Success: >0
 664  *    Not implemented: 0
 665  *    Failure: <0
 666  */
 667 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 668                       INT cbOutput, LPSTR lpszOutData )
 669 {
 670     INT ret = 0;
 671     DC * dc = DC_GetDCPtr( hdc );
 672     if (dc)
 673     {
 674         if (dc->funcs->pExtEscape)
 675             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 676         GDI_ReleaseObj( hdc );
 677     }
 678     return ret;
 679 }
 680
 681
 682 /*******************************************************************
 683  *      DrawEscape [GDI32.@]
 684  *
 685  *
 686  */
 687 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 688 {
 689     FIXME("DrawEscape, stub\n");
 690     return 0;
 691 }