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 <stdio.h>
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winreg.h"
  31
  32 #include "gdi.h"
  33 #include "gdi_private.h"
  34 #include "wine/unicode.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  38
  39 struct graphics_driver
  40 {
  41     struct graphics_driver *next;
  42     struct graphics_driver *prev;
  43     HMODULE                 module;  /* module handle */
  44     unsigned int            count;   /* reference count */
  45     DC_FUNCTIONS            funcs;
  46 };
  47
  48 static struct graphics_driver *first_driver;
  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->next   = NULL;
  71     driver->prev   = NULL;
  72     driver->module = module;
  73     driver->count  = 1;
  74
  75     /* fill the function table */
  76     if (module)
  77     {
  78 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  79         GET_FUNC(AbortDoc);
  80         GET_FUNC(AbortPath);
  81         GET_FUNC(AlphaBlend);
  82         GET_FUNC(AngleArc);
  83         GET_FUNC(Arc);
  84         GET_FUNC(ArcTo);
  85         GET_FUNC(BeginPath);
  86         GET_FUNC(BitBlt);
  87         GET_FUNC(ChoosePixelFormat);
  88         GET_FUNC(Chord);
  89         GET_FUNC(CloseFigure);
  90         GET_FUNC(CreateBitmap);
  91         GET_FUNC(CreateDC);
  92         GET_FUNC(CreateDIBSection);
  93         GET_FUNC(DeleteBitmap);
  94         GET_FUNC(DeleteDC);
  95         GET_FUNC(DescribePixelFormat);
  96         GET_FUNC(DeviceCapabilities);
  97         GET_FUNC(Ellipse);
  98         GET_FUNC(EndDoc);
  99         GET_FUNC(EndPage);
 100         GET_FUNC(EndPath);
 101         GET_FUNC(EnumDeviceFonts);
 102         GET_FUNC(ExcludeClipRect);
 103         GET_FUNC(ExtDeviceMode);
 104         GET_FUNC(ExtEscape);
 105         GET_FUNC(ExtFloodFill);
 106         GET_FUNC(ExtSelectClipRgn);
 107         GET_FUNC(ExtTextOut);
 108         GET_FUNC(FillPath);
 109         GET_FUNC(FillRgn);
 110         GET_FUNC(FlattenPath);
 111         GET_FUNC(FrameRgn);
 112         GET_FUNC(GdiComment);
 113         GET_FUNC(GetBitmapBits);
 114         GET_FUNC(GetCharWidth);
 115         GET_FUNC(GetDCOrgEx);
 116         GET_FUNC(GetDIBColorTable);
 117         GET_FUNC(GetDIBits);
 118         GET_FUNC(GetDeviceCaps);
 119         GET_FUNC(GetDeviceGammaRamp);
 120         GET_FUNC(GetNearestColor);
 121         GET_FUNC(GetPixel);
 122         GET_FUNC(GetPixelFormat);
 123         GET_FUNC(GetSystemPaletteEntries);
 124         GET_FUNC(GetTextExtentPoint);
 125         GET_FUNC(GetTextMetrics);
 126         GET_FUNC(IntersectClipRect);
 127         GET_FUNC(InvertRgn);
 128         GET_FUNC(LineTo);
 129         GET_FUNC(MoveTo);
 130         GET_FUNC(ModifyWorldTransform);
 131         GET_FUNC(OffsetClipRgn);
 132         GET_FUNC(OffsetViewportOrg);
 133         GET_FUNC(OffsetWindowOrg);
 134         GET_FUNC(PaintRgn);
 135         GET_FUNC(PatBlt);
 136         GET_FUNC(Pie);
 137         GET_FUNC(PolyBezier);
 138         GET_FUNC(PolyBezierTo);
 139         GET_FUNC(PolyDraw);
 140         GET_FUNC(PolyPolygon);
 141         GET_FUNC(PolyPolyline);
 142         GET_FUNC(Polygon);
 143         GET_FUNC(Polyline);
 144         GET_FUNC(PolylineTo);
 145         GET_FUNC(RealizeDefaultPalette);
 146         GET_FUNC(RealizePalette);
 147         GET_FUNC(Rectangle);
 148         GET_FUNC(ResetDC);
 149         GET_FUNC(RestoreDC);
 150         GET_FUNC(RoundRect);
 151         GET_FUNC(SaveDC);
 152         GET_FUNC(ScaleViewportExt);
 153         GET_FUNC(ScaleWindowExt);
 154         GET_FUNC(SelectBitmap);
 155         GET_FUNC(SelectBrush);
 156         GET_FUNC(SelectClipPath);
 157         GET_FUNC(SelectFont);
 158         GET_FUNC(SelectPalette);
 159         GET_FUNC(SelectPen);
 160         GET_FUNC(SetArcDirection);
 161         GET_FUNC(SetBitmapBits);
 162         GET_FUNC(SetBkColor);
 163         GET_FUNC(SetBkMode);
 164         GET_FUNC(SetDCBrushColor);
 165         GET_FUNC(SetDCOrg);
 166         GET_FUNC(SetDCPenColor);
 167         GET_FUNC(SetDIBColorTable);
 168         GET_FUNC(SetDIBits);
 169         GET_FUNC(SetDIBitsToDevice);
 170         GET_FUNC(SetDeviceClipping);
 171         GET_FUNC(SetDeviceGammaRamp);
 172         GET_FUNC(SetMapMode);
 173         GET_FUNC(SetMapperFlags);
 174         GET_FUNC(SetPixel);
 175         GET_FUNC(SetPixelFormat);
 176         GET_FUNC(SetPolyFillMode);
 177         GET_FUNC(SetROP2);
 178         GET_FUNC(SetRelAbs);
 179         GET_FUNC(SetStretchBltMode);
 180         GET_FUNC(SetTextAlign);
 181         GET_FUNC(SetTextCharacterExtra);
 182         GET_FUNC(SetTextColor);
 183         GET_FUNC(SetTextJustification);
 184         GET_FUNC(SetViewportExt);
 185         GET_FUNC(SetViewportOrg);
 186         GET_FUNC(SetWindowExt);
 187         GET_FUNC(SetWindowOrg);
 188         GET_FUNC(SetWorldTransform);
 189         GET_FUNC(StartDoc);
 190         GET_FUNC(StartPage);
 191         GET_FUNC(StretchBlt);
 192         GET_FUNC(StretchDIBits);
 193         GET_FUNC(StrokeAndFillPath);
 194         GET_FUNC(StrokePath);
 195         GET_FUNC(SwapBuffers);
 196         GET_FUNC(WidenPath);
 197 #undef GET_FUNC
 198     }
 199     else memset( &driver->funcs, 0, sizeof(driver->funcs) );
 200
 201     /* add it to the list */
 202     driver->prev = NULL;
 203     if ((driver->next = first_driver)) driver->next->prev = driver;
 204     first_driver = driver;
 205     return driver;
 206 }
 207
 208
 209 /**********************************************************************
 210  *           load_display_driver
 211  *
 212  * Special case for loading the display driver: get the name from the config file
 213  */
 214 static struct graphics_driver *load_display_driver(void)
 215 {
 216     char buffer[MAX_PATH], libname[32], *name, *next;
 217     HMODULE module = 0;
 218     HKEY hkey;
 219
 220     if (display_driver)  /* already loaded */
 221     {
 222         display_driver->count++;
 223         return display_driver;
 224     }
 225
 226     strcpy( buffer, "x11" );  /* default value */
 227     /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
 228     if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
 229     {
 230         DWORD type, count = sizeof(buffer);
 231         RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
 232         RegCloseKey( hkey );
 233     }
 234
 235     name = buffer;
 236     while (name)
 237     {
 238         next = strchr( name, ',' );
 239         if (next) *next++ = 0;
 240
 241         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 242         if ((module = LoadLibraryA( libname )) != 0) break;
 243         name = next;
 244     }
 245
 246     if (!(display_driver = create_driver( module )))
 247     {
 248         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 249         FreeLibrary( module );
 250         ExitProcess(1);
 251     }
 252
 253     display_driver->count++;  /* we don't want to free it */
 254     return display_driver;
 255 }
 256
 257
 258 /**********************************************************************
 259  *           DRIVER_load_driver
 260  */
 261 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 262 {
 263     HMODULE module;
 264     struct graphics_driver *driver;
 265     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 266     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 267
 268     EnterCriticalSection( &driver_section );
 269
 270     /* display driver is a special case */
 271     if (!strcmpiW( name, displayW ) ||
 272         !strcmpiW( name, display1W ))
 273     {
 274         driver = load_display_driver();
 275         LeaveCriticalSection( &driver_section );
 276         return &driver->funcs;
 277     }
 278
 279     if ((module = GetModuleHandleW( name )))
 280     {
 281         for (driver = first_driver; driver; driver = driver->next)
 282         {
 283             if (driver->module == module)
 284             {
 285                 driver->count++;
 286                 LeaveCriticalSection( &driver_section );
 287                 return &driver->funcs;
 288             }
 289         }
 290     }
 291
 292     if (!(module = LoadLibraryW( name )))
 293     {
 294         LeaveCriticalSection( &driver_section );
 295         return NULL;
 296     }
 297
 298     if (!(driver = create_driver( module )))
 299     {
 300         FreeLibrary( module );
 301         LeaveCriticalSection( &driver_section );
 302         return NULL;
 303     }
 304
 305     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 306     LeaveCriticalSection( &driver_section );
 307     return &driver->funcs;
 308 }
 309
 310
 311 /**********************************************************************
 312  *           DRIVER_get_driver
 313  *
 314  * Get a new copy of an existing driver.
 315  */
 316 const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs )
 317 {
 318     struct graphics_driver *driver;
 319
 320     EnterCriticalSection( &driver_section );
 321     for (driver = first_driver; driver; driver = driver->next)
 322         if (&driver->funcs == funcs) break;
 323     if (!driver) ERR( "driver not found, trouble ahead\n" );
 324     driver->count++;
 325     LeaveCriticalSection( &driver_section );
 326     return funcs;
 327 }
 328
 329
 330 /**********************************************************************
 331  *           DRIVER_release_driver
 332  *
 333  * Release a driver by decrementing ref count and freeing it if needed.
 334  */
 335 void DRIVER_release_driver( const DC_FUNCTIONS *funcs )
 336 {
 337     struct graphics_driver *driver;
 338
 339     EnterCriticalSection( &driver_section );
 340
 341     for (driver = first_driver; driver; driver = driver->next)
 342         if (&driver->funcs == funcs) break;
 343
 344     if (!driver) goto done;
 345     if (--driver->count) goto done;
 346
 347     /* removed last reference, free it */
 348     if (driver->next) driver->next->prev = driver->prev;
 349     if (driver->prev) driver->prev->next = driver->next;
 350     else first_driver = driver->next;
 351     if (driver == display_driver) display_driver = NULL;
 352
 353     FreeLibrary( driver->module );
 354     HeapFree( GetProcessHeap(), 0, driver );
 355  done:
 356     LeaveCriticalSection( &driver_section );
 357 }
 358
 359
 360 /*****************************************************************************
 361  *      DRIVER_GetDriverName
 362  *
 363  */
 364 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 365 {
 366     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 367     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 368     static const WCHAR empty_strW[] = { 0 };
 369     WCHAR *p;
 370
 371     /* display is a special case */
 372     if (!strcmpiW( device, displayW ))
 373     {
 374         lstrcpynW( driver, displayW, size );
 375         return TRUE;
 376     }
 377
 378     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 379     if(!size) {
 380         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 381         return FALSE;
 382     }
 383     p = strchrW(driver, ',');
 384     if(!p)
 385     {
 386         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 387         return FALSE;
 388     }
 389     *p = 0;
 390     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 391     return TRUE;
 392 }
 393
 394
 395 /***********************************************************************
 396  *           GdiConvertToDevmodeW    (GDI32.@)
 397  */
 398 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 399 {
 400     DEVMODEW *dmW;
 401     WORD dmW_size;
 402
 403     dmW_size = dmA->dmSize + CCHDEVICENAME;
 404     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 405         dmW_size += CCHFORMNAME;
 406
 407     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 408     if (!dmW) return NULL;
 409
 410     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, CCHDEVICENAME,
 411                                    dmW->dmDeviceName, CCHDEVICENAME);
 412     /* copy slightly more, to avoid long computations */
 413     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA->dmSize - CCHDEVICENAME);
 414
 415     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 416     {
 417         MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, CCHFORMNAME,
 418                                        dmW->dmFormName, CCHFORMNAME);
 419         if (dmA->dmSize > (const char *)&dmA->dmLogPixels - (const char *)dmA)
 420             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA->dmSize - ((const char *)&dmA->dmLogPixels - (const char *)dmA));
 421     }
 422
 423     if (dmA->dmDriverExtra)
 424         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA->dmSize, dmA->dmDriverExtra);
 425
 426     dmW->dmSize = dmW_size;
 427
 428     return dmW;
 429 }
 430
 431
 432 /*****************************************************************************
 433  *      @ [GDI32.100]
 434  *
 435  * This should thunk to 16-bit and simply call the proc with the given args.
 436  */
 437 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 438                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 439 {
 440     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 441     return -1;
 442 }
 443
 444 /*****************************************************************************
 445  *      @ [GDI32.101]
 446  *
 447  * This should load the correct driver for lpszDevice and calls this driver's
 448  * ExtDeviceModePropSheet proc.
 449  *
 450  * Note: The driver calls a callback routine for each property sheet page; these
 451  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 452  * The layout of this structure is:
 453  *
 454  * struct
 455  * {
 456  *   DWORD  nPages;
 457  *   DWORD  unknown;
 458  *   HPROPSHEETPAGE  pages[10];
 459  * };
 460  */
 461 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 462                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 463 {
 464     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 465     return -1;
 466 }
 467
 468 /*****************************************************************************
 469  *      @ [GDI32.102]
 470  *
 471  * This should load the correct driver for lpszDevice and calls this driver's
 472  * ExtDeviceMode proc.
 473  *
 474  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 475  */
 476 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 477                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 478                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 479                                     LPSTR lpszProfile, DWORD fwMode )
 480 {
 481     WCHAR deviceW[300];
 482     WCHAR bufW[300];
 483     char buf[300];
 484     HDC hdc;
 485     DC *dc;
 486     INT ret = -1;
 487     INT (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 488
 489     TRACE("(%p, %p, %s, %s, %p, %s, %ld)\n",
 490           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 491
 492     if (!lpszDevice) return -1;
 493     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 494
 495     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 496
 497     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 498
 499     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 500
 501     if ((dc = DC_GetDCPtr( hdc )))
 502     {
 503         pExtDeviceMode = dc->funcs->pExtDeviceMode;
 504         GDI_ReleaseObj( hdc );
 505         if (pExtDeviceMode)
 506             ret = pExtDeviceMode(buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 507                                             lpdmInput, lpszProfile, fwMode);
 508     }
 509     DeleteDC( hdc );
 510     return ret;
 511 }
 512
 513 /****************************************************************************
 514  *      @ [GDI32.103]
 515  *
 516  * This should load the correct driver for lpszDevice and calls this driver's
 517  * AdvancedSetupDialog proc.
 518  */
 519 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 520                                           LPDEVMODEA devin, LPDEVMODEA devout )
 521 {
 522     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 523     return -1;
 524 }
 525
 526 /*****************************************************************************
 527  *      @ [GDI32.104]
 528  *
 529  * This should load the correct driver for lpszDevice and calls this driver's
 530  * DeviceCapabilities proc.
 531  *
 532  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 533  */
 534 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 535                                            WORD fwCapability, LPSTR lpszOutput,
 536                                            LPDEVMODEA lpdm )
 537 {
 538     WCHAR deviceW[300];
 539     WCHAR bufW[300];
 540     char buf[300];
 541     HDC hdc;
 542     DC *dc;
 543     INT ret = -1;
 544
 545     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 546
 547     if (!lpszDevice) return -1;
 548     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 549
 550     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 551
 552     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 553
 554     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 555
 556     if ((dc = DC_GetDCPtr( hdc )))
 557     {
 558         if (dc->funcs->pDeviceCapabilities)
 559             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 560                                                   fwCapability, lpszOutput, lpdm );
 561         GDI_ReleaseObj( hdc );
 562     }
 563     DeleteDC( hdc );
 564     return ret;
 565 }
 566
 567
 568 /************************************************************************
 569  *             Escape  [GDI32.@]
 570  */
 571 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 572 {
 573     INT ret;
 574     POINT *pt;
 575
 576     switch (escape)
 577     {
 578     case ABORTDOC:
 579         return AbortDoc( hdc );
 580
 581     case ENDDOC:
 582         return EndDoc( hdc );
 583
 584     case GETPHYSPAGESIZE:
 585         pt = out_data;
 586         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 587         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 588         return 1;
 589
 590     case GETPRINTINGOFFSET:
 591         pt = out_data;
 592         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 593         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 594         return 1;
 595
 596     case GETSCALINGFACTOR:
 597         pt = out_data;
 598         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 599         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 600         return 1;
 601
 602     case NEWFRAME:
 603         return EndPage( hdc );
 604
 605     case SETABORTPROC:
 606         return SetAbortProc( hdc, (ABORTPROC)in_data );
 607
 608     case STARTDOC:
 609         {
 610             DOCINFOA doc;
 611             char *name = NULL;
 612
 613             /* in_data may not be 0 terminated so we must copy it */
 614             if (in_data)
 615             {
 616                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 617                 memcpy( name, in_data, in_count );
 618                 name[in_count] = 0;
 619             }
 620             /* out_data is actually a pointer to the DocInfo structure and used as
 621              * a second input parameter */
 622             if (out_data) doc = *(DOCINFOA *)out_data;
 623             else
 624             {
 625                 doc.cbSize = sizeof(doc);
 626                 doc.lpszOutput = NULL;
 627                 doc.lpszDatatype = NULL;
 628                 doc.fwType = 0;
 629             }
 630             doc.lpszDocName = name;
 631             ret = StartDocA( hdc, &doc );
 632             HeapFree( GetProcessHeap(), 0, name );
 633             if (ret > 0) ret = StartPage( hdc );
 634             return ret;
 635         }
 636
 637     case QUERYESCSUPPORT:
 638         {
 639             const INT *ptr = (const INT *)in_data;
 640             if (in_count < sizeof(INT)) return 0;
 641             switch(*ptr)
 642             {
 643             case ABORTDOC:
 644             case ENDDOC:
 645             case GETPHYSPAGESIZE:
 646             case GETPRINTINGOFFSET:
 647             case GETSCALINGFACTOR:
 648             case NEWFRAME:
 649             case QUERYESCSUPPORT:
 650             case SETABORTPROC:
 651             case STARTDOC:
 652                 return TRUE;
 653             }
 654             break;
 655         }
 656     }
 657
 658     /* if not handled internally, pass it to the driver */
 659     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 660 }
 661
 662
 663 /******************************************************************************
 664  *              ExtEscape       [GDI32.@]
 665  *
 666  * Access capabilities of a particular device that are not available through GDI.
 667  *
 668  * PARAMS
 669  *    hdc         [I] Handle to device context
 670  *    nEscape     [I] Escape function
 671  *    cbInput     [I] Number of bytes in input structure
 672  *    lpszInData  [I] Pointer to input structure
 673  *    cbOutput    [I] Number of bytes in output structure
 674  *    lpszOutData [O] Pointer to output structure
 675  *
 676  * RETURNS
 677  *    Success: >0
 678  *    Not implemented: 0
 679  *    Failure: <0
 680  */
 681 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 682                       INT cbOutput, LPSTR lpszOutData )
 683 {
 684     INT ret = 0;
 685     DC * dc = DC_GetDCPtr( hdc );
 686     if (dc)
 687     {
 688         if (dc->funcs->pExtEscape)
 689             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 690         GDI_ReleaseObj( hdc );
 691     }
 692     return ret;
 693 }
 694
 695
 696 /*******************************************************************
 697  *      DrawEscape [GDI32.@]
 698  *
 699  *
 700  */
 701 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 702 {
 703     FIXME("DrawEscape, stub\n");
 704     return 0;
 705 }