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
  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, { (DWORD_PTR)(__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     if (module)
  76     {
  77 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  78         GET_FUNC(AbortDoc);
  79         GET_FUNC(AbortPath);
  80         GET_FUNC(AlphaBlend);
  81         GET_FUNC(AngleArc);
  82         GET_FUNC(Arc);
  83         GET_FUNC(ArcTo);
  84         GET_FUNC(BeginPath);
  85         GET_FUNC(BitBlt);
  86         GET_FUNC(ChoosePixelFormat);
  87         GET_FUNC(Chord);
  88         GET_FUNC(CloseFigure);
  89         GET_FUNC(CreateBitmap);
  90         GET_FUNC(CreateDC);
  91         GET_FUNC(CreateDIBSection);
  92         GET_FUNC(DeleteBitmap);
  93         GET_FUNC(DeleteDC);
  94         GET_FUNC(DescribePixelFormat);
  95         GET_FUNC(DeviceCapabilities);
  96         GET_FUNC(Ellipse);
  97         GET_FUNC(EndDoc);
  98         GET_FUNC(EndPage);
  99         GET_FUNC(EndPath);
 100         GET_FUNC(EnumDeviceFonts);
 101         GET_FUNC(ExcludeClipRect);
 102         GET_FUNC(ExtDeviceMode);
 103         GET_FUNC(ExtEscape);
 104         GET_FUNC(ExtFloodFill);
 105         GET_FUNC(ExtSelectClipRgn);
 106         GET_FUNC(ExtTextOut);
 107         GET_FUNC(FillPath);
 108         GET_FUNC(FillRgn);
 109         GET_FUNC(FlattenPath);
 110         GET_FUNC(FrameRgn);
 111         GET_FUNC(GdiComment);
 112         GET_FUNC(GetBitmapBits);
 113         GET_FUNC(GetCharWidth);
 114         GET_FUNC(GetDCOrgEx);
 115         GET_FUNC(GetDIBColorTable);
 116         GET_FUNC(GetDIBits);
 117         GET_FUNC(GetDeviceCaps);
 118         GET_FUNC(GetDeviceGammaRamp);
 119         GET_FUNC(GetNearestColor);
 120         GET_FUNC(GetPixel);
 121         GET_FUNC(GetPixelFormat);
 122         GET_FUNC(GetSystemPaletteEntries);
 123         GET_FUNC(GetTextExtentExPoint);
 124         GET_FUNC(GetTextMetrics);
 125         GET_FUNC(IntersectClipRect);
 126         GET_FUNC(InvertRgn);
 127         GET_FUNC(LineTo);
 128         GET_FUNC(MoveTo);
 129         GET_FUNC(ModifyWorldTransform);
 130         GET_FUNC(OffsetClipRgn);
 131         GET_FUNC(OffsetViewportOrg);
 132         GET_FUNC(OffsetWindowOrg);
 133         GET_FUNC(PaintRgn);
 134         GET_FUNC(PatBlt);
 135         GET_FUNC(Pie);
 136         GET_FUNC(PolyBezier);
 137         GET_FUNC(PolyBezierTo);
 138         GET_FUNC(PolyDraw);
 139         GET_FUNC(PolyPolygon);
 140         GET_FUNC(PolyPolyline);
 141         GET_FUNC(Polygon);
 142         GET_FUNC(Polyline);
 143         GET_FUNC(PolylineTo);
 144         GET_FUNC(RealizeDefaultPalette);
 145         GET_FUNC(RealizePalette);
 146         GET_FUNC(Rectangle);
 147         GET_FUNC(ResetDC);
 148         GET_FUNC(RestoreDC);
 149         GET_FUNC(RoundRect);
 150         GET_FUNC(SaveDC);
 151         GET_FUNC(ScaleViewportExt);
 152         GET_FUNC(ScaleWindowExt);
 153         GET_FUNC(SelectBitmap);
 154         GET_FUNC(SelectBrush);
 155         GET_FUNC(SelectClipPath);
 156         GET_FUNC(SelectFont);
 157         GET_FUNC(SelectPalette);
 158         GET_FUNC(SelectPen);
 159         GET_FUNC(SetArcDirection);
 160         GET_FUNC(SetBitmapBits);
 161         GET_FUNC(SetBkColor);
 162         GET_FUNC(SetBkMode);
 163         GET_FUNC(SetDCBrushColor);
 164         GET_FUNC(SetDCOrg);
 165         GET_FUNC(SetDCPenColor);
 166         GET_FUNC(SetDIBColorTable);
 167         GET_FUNC(SetDIBits);
 168         GET_FUNC(SetDIBitsToDevice);
 169         GET_FUNC(SetDeviceClipping);
 170         GET_FUNC(SetDeviceGammaRamp);
 171         GET_FUNC(SetMapMode);
 172         GET_FUNC(SetMapperFlags);
 173         GET_FUNC(SetPixel);
 174         GET_FUNC(SetPixelFormat);
 175         GET_FUNC(SetPolyFillMode);
 176         GET_FUNC(SetROP2);
 177         GET_FUNC(SetRelAbs);
 178         GET_FUNC(SetStretchBltMode);
 179         GET_FUNC(SetTextAlign);
 180         GET_FUNC(SetTextCharacterExtra);
 181         GET_FUNC(SetTextColor);
 182         GET_FUNC(SetTextJustification);
 183         GET_FUNC(SetViewportExt);
 184         GET_FUNC(SetViewportOrg);
 185         GET_FUNC(SetWindowExt);
 186         GET_FUNC(SetWindowOrg);
 187         GET_FUNC(SetWorldTransform);
 188         GET_FUNC(StartDoc);
 189         GET_FUNC(StartPage);
 190         GET_FUNC(StretchBlt);
 191         GET_FUNC(StretchDIBits);
 192         GET_FUNC(StrokeAndFillPath);
 193         GET_FUNC(StrokePath);
 194         GET_FUNC(SwapBuffers);
 195         GET_FUNC(UnrealizePalette);
 196         GET_FUNC(WidenPath);
 197
 198         /* OpenGL32 */
 199         GET_FUNC(wglCreateContext);
 200         GET_FUNC(wglDeleteContext);
 201         GET_FUNC(wglGetProcAddress);
 202         GET_FUNC(wglGetPbufferDCARB);
 203         GET_FUNC(wglMakeContextCurrentARB);
 204         GET_FUNC(wglMakeCurrent);
 205         GET_FUNC(wglShareLists);
 206         GET_FUNC(wglUseFontBitmapsA);
 207         GET_FUNC(wglUseFontBitmapsW);
 208 #undef GET_FUNC
 209     }
 210     else memset( &driver->funcs, 0, sizeof(driver->funcs) );
 211
 212     /* add it to the list */
 213     driver->prev = NULL;
 214     if ((driver->next = first_driver)) driver->next->prev = driver;
 215     first_driver = driver;
 216     return driver;
 217 }
 218
 219
 220 /**********************************************************************
 221  *           load_display_driver
 222  *
 223  * Special case for loading the display driver: get the name from the config file
 224  */
 225 static struct graphics_driver *load_display_driver(void)
 226 {
 227     char buffer[MAX_PATH], libname[32], *name, *next;
 228     HMODULE module = 0;
 229     HKEY hkey;
 230
 231     if (display_driver)  /* already loaded */
 232     {
 233         display_driver->count++;
 234         return display_driver;
 235     }
 236
 237     strcpy( buffer, "x11" );  /* default value */
 238     /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
 239     if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
 240     {
 241         DWORD type, count = sizeof(buffer);
 242         RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
 243         RegCloseKey( hkey );
 244     }
 245
 246     name = buffer;
 247     while (name)
 248     {
 249         next = strchr( name, ',' );
 250         if (next) *next++ = 0;
 251
 252         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 253         if ((module = LoadLibraryA( libname )) != 0) break;
 254         name = next;
 255     }
 256
 257     if (!(display_driver = create_driver( module )))
 258     {
 259         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 260         FreeLibrary( module );
 261         ExitProcess(1);
 262     }
 263
 264     display_driver->count++;  /* we don't want to free it */
 265     return display_driver;
 266 }
 267
 268
 269 /**********************************************************************
 270  *           DRIVER_load_driver
 271  */
 272 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 273 {
 274     HMODULE module;
 275     struct graphics_driver *driver;
 276     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 277     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 278
 279     EnterCriticalSection( &driver_section );
 280
 281     /* display driver is a special case */
 282     if (!strcmpiW( name, displayW ) ||
 283         !strcmpiW( name, display1W ))
 284     {
 285         driver = load_display_driver();
 286         LeaveCriticalSection( &driver_section );
 287         return &driver->funcs;
 288     }
 289
 290     if ((module = GetModuleHandleW( name )))
 291     {
 292         for (driver = first_driver; driver; driver = driver->next)
 293         {
 294             if (driver->module == module)
 295             {
 296                 driver->count++;
 297                 LeaveCriticalSection( &driver_section );
 298                 return &driver->funcs;
 299             }
 300         }
 301     }
 302
 303     if (!(module = LoadLibraryW( name )))
 304     {
 305         LeaveCriticalSection( &driver_section );
 306         return NULL;
 307     }
 308
 309     if (!(driver = create_driver( module )))
 310     {
 311         FreeLibrary( module );
 312         LeaveCriticalSection( &driver_section );
 313         return NULL;
 314     }
 315
 316     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 317     LeaveCriticalSection( &driver_section );
 318     return &driver->funcs;
 319 }
 320
 321
 322 /**********************************************************************
 323  *           DRIVER_get_driver
 324  *
 325  * Get a new copy of an existing driver.
 326  */
 327 const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs )
 328 {
 329     struct graphics_driver *driver;
 330
 331     EnterCriticalSection( &driver_section );
 332     for (driver = first_driver; driver; driver = driver->next)
 333         if (&driver->funcs == funcs) break;
 334     if (!driver) ERR( "driver not found, trouble ahead\n" );
 335     driver->count++;
 336     LeaveCriticalSection( &driver_section );
 337     return funcs;
 338 }
 339
 340
 341 /**********************************************************************
 342  *           DRIVER_release_driver
 343  *
 344  * Release a driver by decrementing ref count and freeing it if needed.
 345  */
 346 void DRIVER_release_driver( const DC_FUNCTIONS *funcs )
 347 {
 348     struct graphics_driver *driver;
 349
 350     EnterCriticalSection( &driver_section );
 351
 352     for (driver = first_driver; driver; driver = driver->next)
 353         if (&driver->funcs == funcs) break;
 354
 355     if (!driver) goto done;
 356     if (--driver->count) goto done;
 357
 358     /* removed last reference, free it */
 359     if (driver->next) driver->next->prev = driver->prev;
 360     if (driver->prev) driver->prev->next = driver->next;
 361     else first_driver = driver->next;
 362     if (driver == display_driver) display_driver = NULL;
 363
 364     FreeLibrary( driver->module );
 365     HeapFree( GetProcessHeap(), 0, driver );
 366  done:
 367     LeaveCriticalSection( &driver_section );
 368 }
 369
 370
 371 /*****************************************************************************
 372  *      DRIVER_GetDriverName
 373  *
 374  */
 375 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 376 {
 377     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 378     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 379     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 380     static const WCHAR empty_strW[] = { 0 };
 381     WCHAR *p;
 382
 383     /* display is a special case */
 384     if (!strcmpiW( device, displayW ) ||
 385         !strcmpiW( device, display1W ))
 386     {
 387         lstrcpynW( driver, displayW, size );
 388         return TRUE;
 389     }
 390
 391     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 392     if(!size) {
 393         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 394         return FALSE;
 395     }
 396     p = strchrW(driver, ',');
 397     if(!p)
 398     {
 399         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 400         return FALSE;
 401     }
 402     *p = 0;
 403     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 404     return TRUE;
 405 }
 406
 407
 408 /***********************************************************************
 409  *           GdiConvertToDevmodeW    (GDI32.@)
 410  */
 411 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 412 {
 413     DEVMODEW *dmW;
 414     WORD dmW_size;
 415
 416     dmW_size = dmA->dmSize + CCHDEVICENAME;
 417     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 418         dmW_size += CCHFORMNAME;
 419
 420     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 421     if (!dmW) return NULL;
 422
 423     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, CCHDEVICENAME,
 424                                    dmW->dmDeviceName, CCHDEVICENAME);
 425     /* copy slightly more, to avoid long computations */
 426     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA->dmSize - CCHDEVICENAME);
 427
 428     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 429     {
 430         MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, CCHFORMNAME,
 431                                        dmW->dmFormName, CCHFORMNAME);
 432         if (dmA->dmSize > (const char *)&dmA->dmLogPixels - (const char *)dmA)
 433             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA->dmSize - ((const char *)&dmA->dmLogPixels - (const char *)dmA));
 434     }
 435
 436     if (dmA->dmDriverExtra)
 437         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA->dmSize, dmA->dmDriverExtra);
 438
 439     dmW->dmSize = dmW_size;
 440
 441     return dmW;
 442 }
 443
 444
 445 /*****************************************************************************
 446  *      @ [GDI32.100]
 447  *
 448  * This should thunk to 16-bit and simply call the proc with the given args.
 449  */
 450 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 451                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 452 {
 453     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 454     return -1;
 455 }
 456
 457 /*****************************************************************************
 458  *      @ [GDI32.101]
 459  *
 460  * This should load the correct driver for lpszDevice and calls this driver's
 461  * ExtDeviceModePropSheet proc.
 462  *
 463  * Note: The driver calls a callback routine for each property sheet page; these
 464  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 465  * The layout of this structure is:
 466  *
 467  * struct
 468  * {
 469  *   DWORD  nPages;
 470  *   DWORD  unknown;
 471  *   HPROPSHEETPAGE  pages[10];
 472  * };
 473  */
 474 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 475                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 476 {
 477     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 478     return -1;
 479 }
 480
 481 /*****************************************************************************
 482  *      @ [GDI32.102]
 483  *
 484  * This should load the correct driver for lpszDevice and calls this driver's
 485  * ExtDeviceMode proc.
 486  *
 487  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 488  */
 489 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 490                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 491                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 492                                     LPSTR lpszProfile, DWORD fwMode )
 493 {
 494     WCHAR deviceW[300];
 495     WCHAR bufW[300];
 496     char buf[300];
 497     HDC hdc;
 498     DC *dc;
 499     INT ret = -1;
 500
 501     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
 502           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 503
 504     if (!lpszDevice) return -1;
 505     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 506
 507     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 508
 509     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 510
 511     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 512
 513     if ((dc = get_dc_ptr( hdc )))
 514     {
 515         if (dc->funcs->pExtDeviceMode)
 516             ret = dc->funcs->pExtDeviceMode( buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 517                                              lpdmInput, lpszProfile, fwMode );
 518         release_dc_ptr( dc );
 519     }
 520     DeleteDC( hdc );
 521     return ret;
 522 }
 523
 524 /****************************************************************************
 525  *      @ [GDI32.103]
 526  *
 527  * This should load the correct driver for lpszDevice and calls this driver's
 528  * AdvancedSetupDialog proc.
 529  */
 530 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 531                                           LPDEVMODEA devin, LPDEVMODEA devout )
 532 {
 533     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 534     return -1;
 535 }
 536
 537 /*****************************************************************************
 538  *      @ [GDI32.104]
 539  *
 540  * This should load the correct driver for lpszDevice and calls this driver's
 541  * DeviceCapabilities proc.
 542  *
 543  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 544  */
 545 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 546                                            WORD fwCapability, LPSTR lpszOutput,
 547                                            LPDEVMODEA lpdm )
 548 {
 549     WCHAR deviceW[300];
 550     WCHAR bufW[300];
 551     char buf[300];
 552     HDC hdc;
 553     DC *dc;
 554     INT ret = -1;
 555
 556     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 557
 558     if (!lpszDevice) return -1;
 559     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 560
 561     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 562
 563     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 564
 565     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 566
 567     if ((dc = get_dc_ptr( hdc )))
 568     {
 569         if (dc->funcs->pDeviceCapabilities)
 570             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 571                                                   fwCapability, lpszOutput, lpdm );
 572         release_dc_ptr( dc );
 573     }
 574     DeleteDC( hdc );
 575     return ret;
 576 }
 577
 578
 579 /************************************************************************
 580  *             Escape  [GDI32.@]
 581  */
 582 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 583 {
 584     INT ret;
 585     POINT *pt;
 586
 587     switch (escape)
 588     {
 589     case ABORTDOC:
 590         return AbortDoc( hdc );
 591
 592     case ENDDOC:
 593         return EndDoc( hdc );
 594
 595     case GETPHYSPAGESIZE:
 596         pt = out_data;
 597         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 598         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 599         return 1;
 600
 601     case GETPRINTINGOFFSET:
 602         pt = out_data;
 603         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 604         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 605         return 1;
 606
 607     case GETSCALINGFACTOR:
 608         pt = out_data;
 609         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 610         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 611         return 1;
 612
 613     case NEWFRAME:
 614         return EndPage( hdc );
 615
 616     case SETABORTPROC:
 617         return SetAbortProc( hdc, (ABORTPROC)in_data );
 618
 619     case STARTDOC:
 620         {
 621             DOCINFOA doc;
 622             char *name = NULL;
 623
 624             /* in_data may not be 0 terminated so we must copy it */
 625             if (in_data)
 626             {
 627                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 628                 memcpy( name, in_data, in_count );
 629                 name[in_count] = 0;
 630             }
 631             /* out_data is actually a pointer to the DocInfo structure and used as
 632              * a second input parameter */
 633             if (out_data) doc = *(DOCINFOA *)out_data;
 634             else
 635             {
 636                 doc.cbSize = sizeof(doc);
 637                 doc.lpszOutput = NULL;
 638                 doc.lpszDatatype = NULL;
 639                 doc.fwType = 0;
 640             }
 641             doc.lpszDocName = name;
 642             ret = StartDocA( hdc, &doc );
 643             HeapFree( GetProcessHeap(), 0, name );
 644             if (ret > 0) ret = StartPage( hdc );
 645             return ret;
 646         }
 647
 648     case QUERYESCSUPPORT:
 649         {
 650             const INT *ptr = (const INT *)in_data;
 651             if (in_count < sizeof(INT)) return 0;
 652             switch(*ptr)
 653             {
 654             case ABORTDOC:
 655             case ENDDOC:
 656             case GETPHYSPAGESIZE:
 657             case GETPRINTINGOFFSET:
 658             case GETSCALINGFACTOR:
 659             case NEWFRAME:
 660             case QUERYESCSUPPORT:
 661             case SETABORTPROC:
 662             case STARTDOC:
 663                 return TRUE;
 664             }
 665             break;
 666         }
 667     }
 668
 669     /* if not handled internally, pass it to the driver */
 670     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 671 }
 672
 673
 674 /******************************************************************************
 675  *              ExtEscape       [GDI32.@]
 676  *
 677  * Access capabilities of a particular device that are not available through GDI.
 678  *
 679  * PARAMS
 680  *    hdc         [I] Handle to device context
 681  *    nEscape     [I] Escape function
 682  *    cbInput     [I] Number of bytes in input structure
 683  *    lpszInData  [I] Pointer to input structure
 684  *    cbOutput    [I] Number of bytes in output structure
 685  *    lpszOutData [O] Pointer to output structure
 686  *
 687  * RETURNS
 688  *    Success: >0
 689  *    Not implemented: 0
 690  *    Failure: <0
 691  */
 692 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 693                       INT cbOutput, LPSTR lpszOutData )
 694 {
 695     INT ret = 0;
 696     DC * dc = get_dc_ptr( hdc );
 697     if (dc)
 698     {
 699         if (dc->funcs->pExtEscape)
 700             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 701         release_dc_ptr( dc );
 702     }
 703     return ret;
 704 }
 705
 706
 707 /*******************************************************************
 708  *      DrawEscape [GDI32.@]
 709  *
 710  *
 711  */
 712 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 713 {
 714     FIXME("DrawEscape, stub\n");
 715     return 0;
 716 }