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, { 0, (DWORD)(__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
  77 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  78
  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     /* add it to the list */
 200     driver->prev = NULL;
 201     if ((driver->next = first_driver)) driver->next->prev = driver;
 202     first_driver = driver;
 203     return driver;
 204 }
 205
 206
 207 /**********************************************************************
 208  *           load_display_driver
 209  *
 210  * Special case for loading the display driver: get the name from the config file
 211  */
 212 static struct graphics_driver *load_display_driver(void)
 213 {
 214     char buffer[MAX_PATH], libname[32], *name, *next;
 215     HMODULE module = 0;
 216     HKEY hkey;
 217
 218     if (display_driver)  /* already loaded */
 219     {
 220         display_driver->count++;
 221         return display_driver;
 222     }
 223
 224     strcpy( buffer, "x11,tty" );  /* default value */
 225     if (!RegOpenKeyA( HKEY_LOCAL_MACHINE, "Software\\Wine\\Drivers", &hkey ))
 226     {
 227         DWORD type, count = sizeof(buffer);
 228         RegQueryValueExA( hkey, "Graphics", 0, &type, buffer, &count );
 229         RegCloseKey( hkey );
 230     }
 231
 232     name = buffer;
 233     while (name)
 234     {
 235         next = strchr( name, ',' );
 236         if (next) *next++ = 0;
 237
 238         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 239         if ((module = LoadLibraryA( libname )) != 0) break;
 240         name = next;
 241     }
 242     if (!module)
 243     {
 244         MESSAGE( "wine: Could not load graphics driver '%s'.\n", buffer );
 245         if (!strcasecmp( buffer, "x11" ))
 246             MESSAGE( "Make sure that your X server is running and that $DISPLAY is set correctly.\n" );
 247         ExitProcess(1);
 248     }
 249
 250     if (!(display_driver = create_driver( module )))
 251     {
 252         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 253         FreeLibrary( module );
 254         ExitProcess(1);
 255     }
 256
 257     display_driver->count++;  /* we don't want to free it */
 258     return display_driver;
 259 }
 260
 261
 262 /**********************************************************************
 263  *           DRIVER_load_driver
 264  */
 265 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 266 {
 267     HMODULE module;
 268     struct graphics_driver *driver;
 269     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 270
 271     EnterCriticalSection( &driver_section );
 272
 273     /* display driver is a special case */
 274     if (!strcmpiW( name, displayW ))
 275     {
 276         driver = load_display_driver();
 277         LeaveCriticalSection( &driver_section );
 278         return &driver->funcs;
 279     }
 280
 281     if ((module = GetModuleHandleW( name )))
 282     {
 283         for (driver = first_driver; driver; driver = driver->next)
 284         {
 285             if (driver->module == module)
 286             {
 287                 driver->count++;
 288                 LeaveCriticalSection( &driver_section );
 289                 return &driver->funcs;
 290             }
 291         }
 292     }
 293
 294     if (!(module = LoadLibraryW( name )))
 295     {
 296         LeaveCriticalSection( &driver_section );
 297         return NULL;
 298     }
 299
 300     if (!(driver = create_driver( module )))
 301     {
 302         FreeLibrary( module );
 303         LeaveCriticalSection( &driver_section );
 304         return NULL;
 305     }
 306
 307     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 308     LeaveCriticalSection( &driver_section );
 309     return &driver->funcs;
 310 }
 311
 312
 313 /**********************************************************************
 314  *           DRIVER_get_driver
 315  *
 316  * Get a new copy of an existing driver.
 317  */
 318 const DC_FUNCTIONS *DRIVER_get_driver( const DC_FUNCTIONS *funcs )
 319 {
 320     struct graphics_driver *driver;
 321
 322     EnterCriticalSection( &driver_section );
 323     for (driver = first_driver; driver; driver = driver->next)
 324         if (&driver->funcs == funcs) break;
 325     if (!driver) ERR( "driver not found, trouble ahead\n" );
 326     driver->count++;
 327     LeaveCriticalSection( &driver_section );
 328     return funcs;
 329 }
 330
 331
 332 /**********************************************************************
 333  *           DRIVER_release_driver
 334  *
 335  * Release a driver by decrementing ref count and freeing it if needed.
 336  */
 337 void DRIVER_release_driver( const DC_FUNCTIONS *funcs )
 338 {
 339     struct graphics_driver *driver;
 340
 341     EnterCriticalSection( &driver_section );
 342
 343     for (driver = first_driver; driver; driver = driver->next)
 344         if (&driver->funcs == funcs) break;
 345
 346     if (!driver) goto done;
 347     if (--driver->count) goto done;
 348
 349     /* removed last reference, free it */
 350     if (driver->next) driver->next->prev = driver->prev;
 351     if (driver->prev) driver->prev->next = driver->next;
 352     else first_driver = driver->next;
 353     if (driver == display_driver) display_driver = NULL;
 354
 355     FreeLibrary( driver->module );
 356     HeapFree( GetProcessHeap(), 0, driver );
 357  done:
 358     LeaveCriticalSection( &driver_section );
 359 }
 360
 361
 362 /*****************************************************************************
 363  *      DRIVER_GetDriverName
 364  *
 365  */
 366 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 367 {
 368     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 369     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 370     static const WCHAR empty_strW[] = { 0 };
 371     WCHAR *p;
 372
 373     /* display is a special case */
 374     if (!strcmpiW( device, displayW ))
 375     {
 376         lstrcpynW( driver, displayW, size );
 377         return TRUE;
 378     }
 379
 380     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 381     if(!size) {
 382         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 383         return FALSE;
 384     }
 385     p = strchrW(driver, ',');
 386     if(!p)
 387     {
 388         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 389         return FALSE;
 390     }
 391     *p = 0;
 392     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 393     return TRUE;
 394 }
 395
 396
 397 /***********************************************************************
 398  *           GdiConvertToDevmodeW    (GDI32.@)
 399  */
 400 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 401 {
 402     DEVMODEW *dmW;
 403     WORD dmW_size;
 404
 405     dmW_size = dmA->dmSize + CCHDEVICENAME;
 406     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 407         dmW_size += CCHFORMNAME;
 408
 409     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 410     if (!dmW) return NULL;
 411
 412     MultiByteToWideChar(CP_ACP, 0, dmA->dmDeviceName, CCHDEVICENAME,
 413                                    dmW->dmDeviceName, CCHDEVICENAME);
 414     /* copy slightly more, to avoid long computations */
 415     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA->dmSize - CCHDEVICENAME);
 416
 417     if (dmA->dmSize >= (const char *)dmA->dmFormName - (const char *)dmA + CCHFORMNAME)
 418     {
 419         MultiByteToWideChar(CP_ACP, 0, dmA->dmFormName, CCHFORMNAME,
 420                                        dmW->dmFormName, CCHFORMNAME);
 421         if (dmA->dmSize > (const char *)&dmA->dmLogPixels - (const char *)dmA)
 422             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA->dmSize - ((const char *)&dmA->dmLogPixels - (const char *)dmA));
 423     }
 424
 425     if (dmA->dmDriverExtra)
 426         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA->dmSize, dmA->dmDriverExtra);
 427
 428     dmW->dmSize = dmW_size;
 429
 430     return dmW;
 431 }
 432
 433
 434 /*****************************************************************************
 435  *      @ [GDI32.100]
 436  *
 437  * This should thunk to 16-bit and simply call the proc with the given args.
 438  */
 439 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 440                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 441 {
 442     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 443     return -1;
 444 }
 445
 446 /*****************************************************************************
 447  *      @ [GDI32.101]
 448  *
 449  * This should load the correct driver for lpszDevice and calls this driver's
 450  * ExtDeviceModePropSheet proc.
 451  *
 452  * Note: The driver calls a callback routine for each property sheet page; these
 453  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 454  * The layout of this structure is:
 455  *
 456  * struct
 457  * {
 458  *   DWORD  nPages;
 459  *   DWORD  unknown;
 460  *   HPROPSHEETPAGE  pages[10];
 461  * };
 462  */
 463 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 464                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 465 {
 466     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 467     return -1;
 468 }
 469
 470 /*****************************************************************************
 471  *      @ [GDI32.102]
 472  *
 473  * This should load the correct driver for lpszDevice and calls this driver's
 474  * ExtDeviceMode proc.
 475  *
 476  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 477  */
 478 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 479                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 480                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 481                                     LPSTR lpszProfile, DWORD fwMode )
 482 {
 483     WCHAR deviceW[300];
 484     WCHAR bufW[300];
 485     char buf[300];
 486     HDC hdc;
 487     DC *dc;
 488     INT ret = -1;
 489     INT (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,DWORD);
 490
 491     TRACE("(%p, %p, %s, %s, %p, %s, %ld)\n",
 492           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 493
 494     if (!lpszDevice) return -1;
 495     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 496
 497     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 498
 499     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 500
 501     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 502
 503     if ((dc = DC_GetDCPtr( hdc )))
 504     {
 505         pExtDeviceMode = dc->funcs->pExtDeviceMode;
 506         GDI_ReleaseObj( hdc );
 507         if (pExtDeviceMode)
 508             ret = pExtDeviceMode(buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 509                                             lpdmInput, lpszProfile, fwMode);
 510     }
 511     DeleteDC( hdc );
 512     return ret;
 513 }
 514
 515 /****************************************************************************
 516  *      @ [GDI32.103]
 517  *
 518  * This should load the correct driver for lpszDevice and calls this driver's
 519  * AdvancedSetupDialog proc.
 520  */
 521 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 522                                           LPDEVMODEA devin, LPDEVMODEA devout )
 523 {
 524     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 525     return -1;
 526 }
 527
 528 /*****************************************************************************
 529  *      @ [GDI32.104]
 530  *
 531  * This should load the correct driver for lpszDevice and calls this driver's
 532  * DeviceCapabilities proc.
 533  *
 534  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 535  */
 536 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 537                                            WORD fwCapability, LPSTR lpszOutput,
 538                                            LPDEVMODEA lpdm )
 539 {
 540     WCHAR deviceW[300];
 541     WCHAR bufW[300];
 542     char buf[300];
 543     HDC hdc;
 544     DC *dc;
 545     INT ret = -1;
 546
 547     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 548
 549     if (!lpszDevice) return -1;
 550     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 551
 552     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 553
 554     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 555
 556     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 557
 558     if ((dc = DC_GetDCPtr( hdc )))
 559     {
 560         if (dc->funcs->pDeviceCapabilities)
 561             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 562                                                   fwCapability, lpszOutput, lpdm );
 563         GDI_ReleaseObj( hdc );
 564     }
 565     DeleteDC( hdc );
 566     return ret;
 567 }
 568
 569
 570 /************************************************************************
 571  *             Escape  [GDI32.@]
 572  */
 573 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 574 {
 575     INT ret;
 576     POINT *pt;
 577
 578     switch (escape)
 579     {
 580     case ABORTDOC:
 581         return AbortDoc( hdc );
 582
 583     case ENDDOC:
 584         return EndDoc( hdc );
 585
 586     case GETPHYSPAGESIZE:
 587         pt = out_data;
 588         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 589         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 590         return 1;
 591
 592     case GETPRINTINGOFFSET:
 593         pt = out_data;
 594         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 595         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 596         return 1;
 597
 598     case GETSCALINGFACTOR:
 599         pt = out_data;
 600         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 601         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 602         return 1;
 603
 604     case NEWFRAME:
 605         return EndPage( hdc );
 606
 607     case SETABORTPROC:
 608         return SetAbortProc( hdc, (ABORTPROC)in_data );
 609
 610     case STARTDOC:
 611         {
 612             DOCINFOA doc;
 613             char *name = NULL;
 614
 615             /* in_data may not be 0 terminated so we must copy it */
 616             if (in_data)
 617             {
 618                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 619                 memcpy( name, in_data, in_count );
 620                 name[in_count] = 0;
 621             }
 622             /* out_data is actually a pointer to the DocInfo structure and used as
 623              * a second input parameter */
 624             if (out_data) doc = *(DOCINFOA *)out_data;
 625             else
 626             {
 627                 doc.cbSize = sizeof(doc);
 628                 doc.lpszOutput = NULL;
 629                 doc.lpszDatatype = NULL;
 630                 doc.fwType = 0;
 631             }
 632             doc.lpszDocName = name;
 633             ret = StartDocA( hdc, &doc );
 634             HeapFree( GetProcessHeap(), 0, name );
 635             if (ret > 0) ret = StartPage( hdc );
 636             return ret;
 637         }
 638
 639     case QUERYESCSUPPORT:
 640         {
 641             const INT *ptr = (const INT *)in_data;
 642             if (in_count < sizeof(INT)) return 0;
 643             switch(*ptr)
 644             {
 645             case ABORTDOC:
 646             case ENDDOC:
 647             case GETPHYSPAGESIZE:
 648             case GETPRINTINGOFFSET:
 649             case GETSCALINGFACTOR:
 650             case NEWFRAME:
 651             case QUERYESCSUPPORT:
 652             case SETABORTPROC:
 653             case STARTDOC:
 654                 return TRUE;
 655             }
 656             break;
 657         }
 658     }
 659
 660     /* if not handled internally, pass it to the driver */
 661     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 662 }
 663
 664
 665 /******************************************************************************
 666  *              ExtEscape       [GDI32.@]
 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 }