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     /* Big nasty hack tm */
 304     LoadLibraryA("winspool.drv");
 305     if (!(module = LoadLibraryW( name )))
 306     {
 307         LeaveCriticalSection( &driver_section );
 308         return NULL;
 309     }
 310
 311     if (!(driver = create_driver( module )))
 312     {
 313         FreeLibrary( module );
 314         LeaveCriticalSection( &driver_section );
 315         return NULL;
 316     }
 317
 318     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 319     LeaveCriticalSection( &driver_section );
 320     return &driver->funcs;
 321 }
 322
 323
 324 /**********************************************************************
 325  *           DRIVER_get_driver
 326  *
 327  * Get a new copy of an existing driver.
 328  */
 329 const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs )
 330 {
 331     struct graphics_driver *driver;
 332
 333     EnterCriticalSection( &driver_section );
 334     for (driver = first_driver; driver; driver = driver->next)
 335         if (&driver->funcs == funcs) break;
 336     if (!driver) ERR( "driver not found, trouble ahead\n" );
 337     driver->count++;
 338     LeaveCriticalSection( &driver_section );
 339     return funcs;
 340 }
 341
 342
 343 /**********************************************************************
 344  *           DRIVER_release_driver
 345  *
 346  * Release a driver by decrementing ref count and freeing it if needed.
 347  */
 348 void DRIVER_release_driver( const DC_FUNCTIONS *funcs )
 349 {
 350     struct graphics_driver *driver;
 351
 352     EnterCriticalSection( &driver_section );
 353
 354     for (driver = first_driver; driver; driver = driver->next)
 355         if (&driver->funcs == funcs) break;
 356
 357     if (!driver) goto done;
 358     if (--driver->count) goto done;
 359
 360     /* removed last reference, free it */
 361     if (driver->next) driver->next->prev = driver->prev;
 362     if (driver->prev) driver->prev->next = driver->next;
 363     else first_driver = driver->next;
 364     if (driver == display_driver) display_driver = NULL;
 365
 366     FreeLibrary( driver->module );
 367     HeapFree( GetProcessHeap(), 0, driver );
 368  done:
 369     LeaveCriticalSection( &driver_section );
 370 }
 371
 372
 373 /*****************************************************************************
 374  *      DRIVER_GetDriverName
 375  *
 376  */
 377 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 378 {
 379     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 380     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 381     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 382     static const WCHAR empty_strW[] = { 0 };
 383     WCHAR *p;
 384
 385     /* display is a special case */
 386     if (!strcmpiW( device, displayW ) ||
 387         !strcmpiW( device, display1W ))
 388     {
 389         lstrcpynW( driver, displayW, size );
 390         return TRUE;
 391     }
 392
 393     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 394     if(!size) {
 395         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 396         return FALSE;
 397     }
 398     p = strchrW(driver, ',');
 399     if(!p)
 400     {
 401         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 402         return FALSE;
 403     }
 404     *p = 0;
 405     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 406     return TRUE;
 407 }
 408
 409
 410 /***********************************************************************
 411  *           GdiConvertToDevmodeW    (GDI32.@)
 412  */
 413 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 414 {
 415     DEVMODEW *dmW;
 416     WORD dmW_size;
 417
 418     dmW_size = dmA->dmSize + CCHDEVICENAME;
 419     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 420         dmW_size += CCHFORMNAME;
 421
 422     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 423     if (!dmW) return NULL;
 424
 425     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, CCHDEVICENAME,
 426                                    dmW->dmDeviceName, CCHDEVICENAME);
 427     /* copy slightly more, to avoid long computations */
 428     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA->dmSize - CCHDEVICENAME);
 429
 430     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 431     {
 432         MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, CCHFORMNAME,
 433                                        dmW->dmFormName, CCHFORMNAME);
 434         if (dmA->dmSize > (const char *)&dmA->dmLogPixels - (const char *)dmA)
 435             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA->dmSize - ((const char *)&dmA->dmLogPixels - (const char *)dmA));
 436     }
 437
 438     if (dmA->dmDriverExtra)
 439         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA->dmSize, dmA->dmDriverExtra);
 440
 441     dmW->dmSize = dmW_size;
 442
 443     return dmW;
 444 }
 445
 446
 447 /*****************************************************************************
 448  *      @ [GDI32.100]
 449  *
 450  * This should thunk to 16-bit and simply call the proc with the given args.
 451  */
 452 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 453                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 454 {
 455     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 456     return -1;
 457 }
 458
 459 /*****************************************************************************
 460  *      @ [GDI32.101]
 461  *
 462  * This should load the correct driver for lpszDevice and calls this driver's
 463  * ExtDeviceModePropSheet proc.
 464  *
 465  * Note: The driver calls a callback routine for each property sheet page; these
 466  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 467  * The layout of this structure is:
 468  *
 469  * struct
 470  * {
 471  *   DWORD  nPages;
 472  *   DWORD  unknown;
 473  *   HPROPSHEETPAGE  pages[10];
 474  * };
 475  */
 476 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 477                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 478 {
 479     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 480     return -1;
 481 }
 482
 483 /*****************************************************************************
 484  *      @ [GDI32.102]
 485  *
 486  * This should load the correct driver for lpszDevice and calls this driver's
 487  * ExtDeviceMode proc.
 488  *
 489  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 490  */
 491 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 492                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 493                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 494                                     LPSTR lpszProfile, DWORD fwMode )
 495 {
 496     WCHAR deviceW[300];
 497     WCHAR bufW[300];
 498     char buf[300];
 499     HDC hdc;
 500     DC *dc;
 501     INT ret = -1;
 502     INT (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 503
 504     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
 505           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 506
 507     if (!lpszDevice) return -1;
 508     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 509
 510     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 511
 512     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 513
 514     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 515
 516     if ((dc = DC_GetDCPtr( hdc )))
 517     {
 518         pExtDeviceMode = dc->funcs->pExtDeviceMode;
 519         GDI_ReleaseObj( hdc );
 520         if (pExtDeviceMode)
 521             ret = pExtDeviceMode(buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 522                                             lpdmInput, lpszProfile, fwMode);
 523     }
 524     DeleteDC( hdc );
 525     return ret;
 526 }
 527
 528 /****************************************************************************
 529  *      @ [GDI32.103]
 530  *
 531  * This should load the correct driver for lpszDevice and calls this driver's
 532  * AdvancedSetupDialog proc.
 533  */
 534 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 535                                           LPDEVMODEA devin, LPDEVMODEA devout )
 536 {
 537     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 538     return -1;
 539 }
 540
 541 /*****************************************************************************
 542  *      @ [GDI32.104]
 543  *
 544  * This should load the correct driver for lpszDevice and calls this driver's
 545  * DeviceCapabilities proc.
 546  *
 547  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 548  */
 549 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 550                                            WORD fwCapability, LPSTR lpszOutput,
 551                                            LPDEVMODEA lpdm )
 552 {
 553     WCHAR deviceW[300];
 554     WCHAR bufW[300];
 555     char buf[300];
 556     HDC hdc;
 557     DC *dc;
 558     INT ret = -1;
 559
 560     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 561
 562     if (!lpszDevice) return -1;
 563     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 564
 565     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 566
 567     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 568
 569     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 570
 571     if ((dc = DC_GetDCPtr( hdc )))
 572     {
 573         if (dc->funcs->pDeviceCapabilities)
 574             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 575                                                   fwCapability, lpszOutput, lpdm );
 576         GDI_ReleaseObj( hdc );
 577     }
 578     DeleteDC( hdc );
 579     return ret;
 580 }
 581
 582
 583 /************************************************************************
 584  *             Escape  [GDI32.@]
 585  */
 586 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 587 {
 588     INT ret;
 589     POINT *pt;
 590
 591     switch (escape)
 592     {
 593     case ABORTDOC:
 594         return AbortDoc( hdc );
 595
 596     case ENDDOC:
 597         return EndDoc( hdc );
 598
 599     case GETPHYSPAGESIZE:
 600         pt = out_data;
 601         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 602         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 603         return 1;
 604
 605     case GETPRINTINGOFFSET:
 606         pt = out_data;
 607         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 608         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 609         return 1;
 610
 611     case GETSCALINGFACTOR:
 612         pt = out_data;
 613         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 614         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 615         return 1;
 616
 617     case NEWFRAME:
 618         return EndPage( hdc );
 619
 620     case SETABORTPROC:
 621         return SetAbortProc( hdc, (ABORTPROC)in_data );
 622
 623     case STARTDOC:
 624         {
 625             DOCINFOA doc;
 626             char *name = NULL;
 627
 628             /* in_data may not be 0 terminated so we must copy it */
 629             if (in_data)
 630             {
 631                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 632                 memcpy( name, in_data, in_count );
 633                 name[in_count] = 0;
 634             }
 635             /* out_data is actually a pointer to the DocInfo structure and used as
 636              * a second input parameter */
 637             if (out_data) doc = *(DOCINFOA *)out_data;
 638             else
 639             {
 640                 doc.cbSize = sizeof(doc);
 641                 doc.lpszOutput = NULL;
 642                 doc.lpszDatatype = NULL;
 643                 doc.fwType = 0;
 644             }
 645             doc.lpszDocName = name;
 646             ret = StartDocA( hdc, &doc );
 647             HeapFree( GetProcessHeap(), 0, name );
 648             if (ret > 0) ret = StartPage( hdc );
 649             return ret;
 650         }
 651
 652     case QUERYESCSUPPORT:
 653         {
 654             const INT *ptr = (const INT *)in_data;
 655             if (in_count < sizeof(INT)) return 0;
 656             switch(*ptr)
 657             {
 658             case ABORTDOC:
 659             case ENDDOC:
 660             case GETPHYSPAGESIZE:
 661             case GETPRINTINGOFFSET:
 662             case GETSCALINGFACTOR:
 663             case NEWFRAME:
 664             case QUERYESCSUPPORT:
 665             case SETABORTPROC:
 666             case STARTDOC:
 667                 return TRUE;
 668             }
 669             break;
 670         }
 671     }
 672
 673     /* if not handled internally, pass it to the driver */
 674     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 675 }
 676
 677
 678 /******************************************************************************
 679  *              ExtEscape       [GDI32.@]
 680  *
 681  * Access capabilities of a particular device that are not available through GDI.
 682  *
 683  * PARAMS
 684  *    hdc         [I] Handle to device context
 685  *    nEscape     [I] Escape function
 686  *    cbInput     [I] Number of bytes in input structure
 687  *    lpszInData  [I] Pointer to input structure
 688  *    cbOutput    [I] Number of bytes in output structure
 689  *    lpszOutData [O] Pointer to output structure
 690  *
 691  * RETURNS
 692  *    Success: >0
 693  *    Not implemented: 0
 694  *    Failure: <0
 695  */
 696 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 697                       INT cbOutput, LPSTR lpszOutData )
 698 {
 699     INT ret = 0;
 700     DC * dc = DC_GetDCPtr( hdc );
 701     if (dc)
 702     {
 703         if (dc->funcs->pExtEscape)
 704             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 705         GDI_ReleaseObj( hdc );
 706     }
 707     return ret;
 708 }
 709
 710
 711 /*******************************************************************
 712  *      DrawEscape [GDI32.@]
 713  *
 714  *
 715  */
 716 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 717 {
 718     FIXME("DrawEscape, stub\n");
 719     return 0;
 720 }