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 #include "ddrawgdi.h"
  32 #include "wine/winbase16.h"
  33
  34 #include "gdi_private.h"
  35 #include "wine/unicode.h"
  36 #include "wine/list.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  40
  41 struct graphics_driver
  42 {
  43     struct list             entry;
  44     HMODULE                 module;  /* module handle */
  45     DC_FUNCTIONS            funcs;
  46 };
  47
  48 static struct list drivers = LIST_INIT( drivers );
  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->module = module;
  71
  72     /* fill the function table */
  73     if (module)
  74     {
  75 #define GET_FUNC(name) driver->funcs.p##name = (void*)GetProcAddress( module, #name )
  76         GET_FUNC(AbortDoc);
  77         GET_FUNC(AbortPath);
  78         GET_FUNC(AlphaBlend);
  79         GET_FUNC(AngleArc);
  80         GET_FUNC(Arc);
  81         GET_FUNC(ArcTo);
  82         GET_FUNC(BeginPath);
  83         GET_FUNC(BitBlt);
  84         GET_FUNC(ChoosePixelFormat);
  85         GET_FUNC(Chord);
  86         GET_FUNC(CloseFigure);
  87         GET_FUNC(CreateBitmap);
  88         GET_FUNC(CreateDC);
  89         GET_FUNC(CreateDIBSection);
  90         GET_FUNC(DeleteBitmap);
  91         GET_FUNC(DeleteDC);
  92         GET_FUNC(DescribePixelFormat);
  93         GET_FUNC(DeviceCapabilities);
  94         GET_FUNC(Ellipse);
  95         GET_FUNC(EndDoc);
  96         GET_FUNC(EndPage);
  97         GET_FUNC(EndPath);
  98         GET_FUNC(EnumDeviceFonts);
  99         GET_FUNC(ExcludeClipRect);
 100         GET_FUNC(ExtDeviceMode);
 101         GET_FUNC(ExtEscape);
 102         GET_FUNC(ExtFloodFill);
 103         GET_FUNC(ExtSelectClipRgn);
 104         GET_FUNC(ExtTextOut);
 105         GET_FUNC(FillPath);
 106         GET_FUNC(FillRgn);
 107         GET_FUNC(FlattenPath);
 108         GET_FUNC(FrameRgn);
 109         GET_FUNC(GdiComment);
 110         GET_FUNC(GetBitmapBits);
 111         GET_FUNC(GetCharWidth);
 112         GET_FUNC(GetDCOrgEx);
 113         GET_FUNC(GetDIBColorTable);
 114         GET_FUNC(GetDIBits);
 115         GET_FUNC(GetDeviceCaps);
 116         GET_FUNC(GetDeviceGammaRamp);
 117         GET_FUNC(GetICMProfile);
 118         GET_FUNC(GetNearestColor);
 119         GET_FUNC(GetPixel);
 120         GET_FUNC(GetPixelFormat);
 121         GET_FUNC(GetSystemPaletteEntries);
 122         GET_FUNC(GetTextExtentExPoint);
 123         GET_FUNC(GetTextMetrics);
 124         GET_FUNC(IntersectClipRect);
 125         GET_FUNC(InvertRgn);
 126         GET_FUNC(LineTo);
 127         GET_FUNC(MoveTo);
 128         GET_FUNC(ModifyWorldTransform);
 129         GET_FUNC(OffsetClipRgn);
 130         GET_FUNC(OffsetViewportOrg);
 131         GET_FUNC(OffsetWindowOrg);
 132         GET_FUNC(PaintRgn);
 133         GET_FUNC(PatBlt);
 134         GET_FUNC(Pie);
 135         GET_FUNC(PolyBezier);
 136         GET_FUNC(PolyBezierTo);
 137         GET_FUNC(PolyDraw);
 138         GET_FUNC(PolyPolygon);
 139         GET_FUNC(PolyPolyline);
 140         GET_FUNC(Polygon);
 141         GET_FUNC(Polyline);
 142         GET_FUNC(PolylineTo);
 143         GET_FUNC(RealizeDefaultPalette);
 144         GET_FUNC(RealizePalette);
 145         GET_FUNC(Rectangle);
 146         GET_FUNC(ResetDC);
 147         GET_FUNC(RestoreDC);
 148         GET_FUNC(RoundRect);
 149         GET_FUNC(SaveDC);
 150         GET_FUNC(ScaleViewportExt);
 151         GET_FUNC(ScaleWindowExt);
 152         GET_FUNC(SelectBitmap);
 153         GET_FUNC(SelectBrush);
 154         GET_FUNC(SelectClipPath);
 155         GET_FUNC(SelectFont);
 156         GET_FUNC(SelectPalette);
 157         GET_FUNC(SelectPen);
 158         GET_FUNC(SetArcDirection);
 159         GET_FUNC(SetBitmapBits);
 160         GET_FUNC(SetBkColor);
 161         GET_FUNC(SetBkMode);
 162         GET_FUNC(SetDCBrushColor);
 163         GET_FUNC(SetDCPenColor);
 164         GET_FUNC(SetDIBColorTable);
 165         GET_FUNC(SetDIBits);
 166         GET_FUNC(SetDIBitsToDevice);
 167         GET_FUNC(SetDeviceClipping);
 168         GET_FUNC(SetDeviceGammaRamp);
 169         GET_FUNC(SetMapMode);
 170         GET_FUNC(SetMapperFlags);
 171         GET_FUNC(SetPixel);
 172         GET_FUNC(SetPixelFormat);
 173         GET_FUNC(SetPolyFillMode);
 174         GET_FUNC(SetROP2);
 175         GET_FUNC(SetRelAbs);
 176         GET_FUNC(SetStretchBltMode);
 177         GET_FUNC(SetTextAlign);
 178         GET_FUNC(SetTextCharacterExtra);
 179         GET_FUNC(SetTextColor);
 180         GET_FUNC(SetTextJustification);
 181         GET_FUNC(SetViewportExt);
 182         GET_FUNC(SetViewportOrg);
 183         GET_FUNC(SetWindowExt);
 184         GET_FUNC(SetWindowOrg);
 185         GET_FUNC(SetWorldTransform);
 186         GET_FUNC(StartDoc);
 187         GET_FUNC(StartPage);
 188         GET_FUNC(StretchBlt);
 189         GET_FUNC(StretchDIBits);
 190         GET_FUNC(StrokeAndFillPath);
 191         GET_FUNC(StrokePath);
 192         GET_FUNC(SwapBuffers);
 193         GET_FUNC(UnrealizePalette);
 194         GET_FUNC(WidenPath);
 195
 196         /* OpenGL32 */
 197         GET_FUNC(wglCreateContext);
 198         GET_FUNC(wglCreateContextAttribsARB);
 199         GET_FUNC(wglDeleteContext);
 200         GET_FUNC(wglGetProcAddress);
 201         GET_FUNC(wglGetPbufferDCARB);
 202         GET_FUNC(wglMakeContextCurrentARB);
 203         GET_FUNC(wglMakeCurrent);
 204         GET_FUNC(wglSetPixelFormatWINE);
 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     return driver;
 213 }
 214
 215
 216 /**********************************************************************
 217  *           DRIVER_get_display_driver
 218  *
 219  * Special case for loading the display driver: get the name from the config file
 220  */
 221 const DC_FUNCTIONS *DRIVER_get_display_driver(void)
 222 {
 223     struct graphics_driver *driver;
 224     char buffer[MAX_PATH], libname[32], *name, *next;
 225     HMODULE module = 0;
 226     HKEY hkey;
 227
 228     if (display_driver) return &display_driver->funcs;  /* already loaded */
 229
 230     strcpy( buffer, "x11" );  /* default value */
 231     /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
 232     if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
 233     {
 234         DWORD type, count = sizeof(buffer);
 235         RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
 236         RegCloseKey( hkey );
 237     }
 238
 239     name = buffer;
 240     while (name)
 241     {
 242         next = strchr( name, ',' );
 243         if (next) *next++ = 0;
 244
 245         snprintf( libname, sizeof(libname), "wine%s.drv", name );
 246         if ((module = LoadLibraryA( libname )) != 0) break;
 247         name = next;
 248     }
 249
 250     if (!(driver = create_driver( module )))
 251     {
 252         MESSAGE( "Could not create graphics driver '%s'\n", buffer );
 253         FreeLibrary( module );
 254         ExitProcess(1);
 255     }
 256     if (InterlockedCompareExchangePointer( (void **)&display_driver, driver, NULL ))
 257     {
 258         /* somebody beat us to it */
 259         FreeLibrary( driver->module );
 260         HeapFree( GetProcessHeap(), 0, driver );
 261     }
 262     return &display_driver->funcs;
 263 }
 264
 265
 266 /**********************************************************************
 267  *           DRIVER_load_driver
 268  */
 269 const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
 270 {
 271     HMODULE module;
 272     struct graphics_driver *driver, *new_driver;
 273     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 274     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 275
 276     /* display driver is a special case */
 277     if (!strcmpiW( name, displayW ) || !strcmpiW( name, display1W )) return DRIVER_get_display_driver();
 278
 279     if ((module = GetModuleHandleW( name )))
 280     {
 281         if (display_driver && display_driver->module == module) return &display_driver->funcs;
 282         EnterCriticalSection( &driver_section );
 283         LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
 284         {
 285             if (driver->module == module) goto done;
 286         }
 287         LeaveCriticalSection( &driver_section );
 288     }
 289
 290     if (!(module = LoadLibraryW( name ))) return NULL;
 291
 292     if (!(new_driver = create_driver( module )))
 293     {
 294         FreeLibrary( module );
 295         return NULL;
 296     }
 297
 298     /* check if someone else added it in the meantime */
 299     EnterCriticalSection( &driver_section );
 300     LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
 301     {
 302         if (driver->module != module) continue;
 303         FreeLibrary( module );
 304         HeapFree( GetProcessHeap(), 0, new_driver );
 305         goto done;
 306     }
 307     driver = new_driver;
 308     list_add_head( &drivers, &driver->entry );
 309     TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
 310 done:
 311     LeaveCriticalSection( &driver_section );
 312     return &driver->funcs;
 313 }
 314
 315
 316 /*****************************************************************************
 317  *      DRIVER_GetDriverName
 318  *
 319  */
 320 BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
 321 {
 322     static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 323     static const WCHAR devicesW[] = { 'd','e','v','i','c','e','s',0 };
 324     static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
 325     static const WCHAR empty_strW[] = { 0 };
 326     WCHAR *p;
 327
 328     /* display is a special case */
 329     if (!strcmpiW( device, displayW ) ||
 330         !strcmpiW( device, display1W ))
 331     {
 332         lstrcpynW( driver, displayW, size );
 333         return TRUE;
 334     }
 335
 336     size = GetProfileStringW(devicesW, device, empty_strW, driver, size);
 337     if(!size) {
 338         WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
 339         return FALSE;
 340     }
 341     p = strchrW(driver, ',');
 342     if(!p)
 343     {
 344         WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
 345         return FALSE;
 346     }
 347     *p = 0;
 348     TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
 349     return TRUE;
 350 }
 351
 352
 353 /***********************************************************************
 354  *           GdiConvertToDevmodeW    (GDI32.@)
 355  */
 356 DEVMODEW * WINAPI GdiConvertToDevmodeW(const DEVMODEA *dmA)
 357 {
 358     DEVMODEW *dmW;
 359     WORD dmW_size, dmA_size;
 360
 361     dmA_size = dmA->dmSize;
 362
 363     /* this is the minimal dmSize that XP accepts */
 364     if (dmA_size < FIELD_OFFSET(DEVMODEA, dmFields))
 365         return NULL;
 366
 367     if (dmA_size > sizeof(DEVMODEA))
 368         dmA_size = sizeof(DEVMODEA);
 369
 370     dmW_size = dmA_size + CCHDEVICENAME;
 371     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 372         dmW_size += CCHFORMNAME;
 373
 374     dmW = HeapAlloc(GetProcessHeap(), 0, dmW_size + dmA->dmDriverExtra);
 375     if (!dmW) return NULL;
 376
 377     MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmDeviceName, -1,
 378                                    dmW->dmDeviceName, CCHDEVICENAME);
 379     /* copy slightly more, to avoid long computations */
 380     memcpy(&dmW->dmSpecVersion, &dmA->dmSpecVersion, dmA_size - CCHDEVICENAME);
 381
 382     if (dmA_size >= FIELD_OFFSET(DEVMODEA, dmFormName) + CCHFORMNAME)
 383     {
 384         if (dmA->dmFields & DM_FORMNAME)
 385             MultiByteToWideChar(CP_ACP, 0, (const char*) dmA->dmFormName, -1,
 386                                        dmW->dmFormName, CCHFORMNAME);
 387         else
 388             dmW->dmFormName[0] = 0;
 389
 390         if (dmA_size > FIELD_OFFSET(DEVMODEA, dmLogPixels))
 391             memcpy(&dmW->dmLogPixels, &dmA->dmLogPixels, dmA_size - FIELD_OFFSET(DEVMODEA, dmLogPixels));
 392     }
 393
 394     if (dmA->dmDriverExtra)
 395         memcpy((char *)dmW + dmW_size, (const char *)dmA + dmA_size, dmA->dmDriverExtra);
 396
 397     dmW->dmSize = dmW_size;
 398
 399     return dmW;
 400 }
 401
 402
 403 /*****************************************************************************
 404  *      @ [GDI32.100]
 405  *
 406  * This should thunk to 16-bit and simply call the proc with the given args.
 407  */
 408 INT WINAPI GDI_CallDevInstall16( FARPROC16 lpfnDevInstallProc, HWND hWnd,
 409                                  LPSTR lpModelName, LPSTR OldPort, LPSTR NewPort )
 410 {
 411     FIXME("(%p, %p, %s, %s, %s)\n", lpfnDevInstallProc, hWnd, lpModelName, OldPort, NewPort );
 412     return -1;
 413 }
 414
 415 /*****************************************************************************
 416  *      @ [GDI32.101]
 417  *
 418  * This should load the correct driver for lpszDevice and calls this driver's
 419  * ExtDeviceModePropSheet proc.
 420  *
 421  * Note: The driver calls a callback routine for each property sheet page; these
 422  * pages are supposed to be filled into the structure pointed to by lpPropSheet.
 423  * The layout of this structure is:
 424  *
 425  * struct
 426  * {
 427  *   DWORD  nPages;
 428  *   DWORD  unknown;
 429  *   HPROPSHEETPAGE  pages[10];
 430  * };
 431  */
 432 INT WINAPI GDI_CallExtDeviceModePropSheet16( HWND hWnd, LPCSTR lpszDevice,
 433                                              LPCSTR lpszPort, LPVOID lpPropSheet )
 434 {
 435     FIXME("(%p, %s, %s, %p)\n", hWnd, lpszDevice, lpszPort, lpPropSheet );
 436     return -1;
 437 }
 438
 439 /*****************************************************************************
 440  *      @ [GDI32.102]
 441  *
 442  * This should load the correct driver for lpszDevice and call this driver's
 443  * ExtDeviceMode proc.
 444  *
 445  * FIXME: convert ExtDeviceMode to unicode in the driver interface
 446  */
 447 INT WINAPI GDI_CallExtDeviceMode16( HWND hwnd,
 448                                     LPDEVMODEA lpdmOutput, LPSTR lpszDevice,
 449                                     LPSTR lpszPort, LPDEVMODEA lpdmInput,
 450                                     LPSTR lpszProfile, DWORD fwMode )
 451 {
 452     WCHAR deviceW[300];
 453     WCHAR bufW[300];
 454     char buf[300];
 455     HDC hdc;
 456     DC *dc;
 457     INT ret = -1;
 458
 459     TRACE("(%p, %p, %s, %s, %p, %s, %d)\n",
 460           hwnd, lpdmOutput, lpszDevice, lpszPort, lpdmInput, lpszProfile, fwMode );
 461
 462     if (!lpszDevice) return -1;
 463     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 464
 465     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 466
 467     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 468
 469     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 470
 471     if ((dc = get_dc_ptr( hdc )))
 472     {
 473         if (dc->funcs->pExtDeviceMode)
 474             ret = dc->funcs->pExtDeviceMode( buf, hwnd, lpdmOutput, lpszDevice, lpszPort,
 475                                              lpdmInput, lpszProfile, fwMode );
 476         release_dc_ptr( dc );
 477     }
 478     DeleteDC( hdc );
 479     return ret;
 480 }
 481
 482 /****************************************************************************
 483  *      @ [GDI32.103]
 484  *
 485  * This should load the correct driver for lpszDevice and calls this driver's
 486  * AdvancedSetupDialog proc.
 487  */
 488 INT WINAPI GDI_CallAdvancedSetupDialog16( HWND hwnd, LPSTR lpszDevice,
 489                                           LPDEVMODEA devin, LPDEVMODEA devout )
 490 {
 491     TRACE("(%p, %s, %p, %p)\n", hwnd, lpszDevice, devin, devout );
 492     return -1;
 493 }
 494
 495 /*****************************************************************************
 496  *      @ [GDI32.104]
 497  *
 498  * This should load the correct driver for lpszDevice and calls this driver's
 499  * DeviceCapabilities proc.
 500  *
 501  * FIXME: convert DeviceCapabilities to unicode in the driver interface
 502  */
 503 DWORD WINAPI GDI_CallDeviceCapabilities16( LPCSTR lpszDevice, LPCSTR lpszPort,
 504                                            WORD fwCapability, LPSTR lpszOutput,
 505                                            LPDEVMODEA lpdm )
 506 {
 507     WCHAR deviceW[300];
 508     WCHAR bufW[300];
 509     char buf[300];
 510     HDC hdc;
 511     DC *dc;
 512     INT ret = -1;
 513
 514     TRACE("(%s, %s, %d, %p, %p)\n", lpszDevice, lpszPort, fwCapability, lpszOutput, lpdm );
 515
 516     if (!lpszDevice) return -1;
 517     if (!MultiByteToWideChar(CP_ACP, 0, lpszDevice, -1, deviceW, 300)) return -1;
 518
 519     if(!DRIVER_GetDriverName( deviceW, bufW, 300 )) return -1;
 520
 521     if (!WideCharToMultiByte(CP_ACP, 0, bufW, -1, buf, 300, NULL, NULL)) return -1;
 522
 523     if (!(hdc = CreateICA( buf, lpszDevice, lpszPort, NULL ))) return -1;
 524
 525     if ((dc = get_dc_ptr( hdc )))
 526     {
 527         if (dc->funcs->pDeviceCapabilities)
 528             ret = dc->funcs->pDeviceCapabilities( buf, lpszDevice, lpszPort,
 529                                                   fwCapability, lpszOutput, lpdm );
 530         release_dc_ptr( dc );
 531     }
 532     DeleteDC( hdc );
 533     return ret;
 534 }
 535
 536
 537 /************************************************************************
 538  *             Escape  [GDI32.@]
 539  */
 540 INT WINAPI Escape( HDC hdc, INT escape, INT in_count, LPCSTR in_data, LPVOID out_data )
 541 {
 542     INT ret;
 543     POINT *pt;
 544
 545     switch (escape)
 546     {
 547     case ABORTDOC:
 548         return AbortDoc( hdc );
 549
 550     case ENDDOC:
 551         return EndDoc( hdc );
 552
 553     case GETPHYSPAGESIZE:
 554         pt = out_data;
 555         pt->x = GetDeviceCaps( hdc, PHYSICALWIDTH );
 556         pt->y = GetDeviceCaps( hdc, PHYSICALHEIGHT );
 557         return 1;
 558
 559     case GETPRINTINGOFFSET:
 560         pt = out_data;
 561         pt->x = GetDeviceCaps( hdc, PHYSICALOFFSETX );
 562         pt->y = GetDeviceCaps( hdc, PHYSICALOFFSETY );
 563         return 1;
 564
 565     case GETSCALINGFACTOR:
 566         pt = out_data;
 567         pt->x = GetDeviceCaps( hdc, SCALINGFACTORX );
 568         pt->y = GetDeviceCaps( hdc, SCALINGFACTORY );
 569         return 1;
 570
 571     case NEWFRAME:
 572         return EndPage( hdc );
 573
 574     case SETABORTPROC:
 575         return SetAbortProc( hdc, (ABORTPROC)in_data );
 576
 577     case STARTDOC:
 578         {
 579             DOCINFOA doc;
 580             char *name = NULL;
 581
 582             /* in_data may not be 0 terminated so we must copy it */
 583             if (in_data)
 584             {
 585                 name = HeapAlloc( GetProcessHeap(), 0, in_count+1 );
 586                 memcpy( name, in_data, in_count );
 587                 name[in_count] = 0;
 588             }
 589             /* out_data is actually a pointer to the DocInfo structure and used as
 590              * a second input parameter */
 591             if (out_data) doc = *(DOCINFOA *)out_data;
 592             else
 593             {
 594                 doc.cbSize = sizeof(doc);
 595                 doc.lpszOutput = NULL;
 596                 doc.lpszDatatype = NULL;
 597                 doc.fwType = 0;
 598             }
 599             doc.lpszDocName = name;
 600             ret = StartDocA( hdc, &doc );
 601             HeapFree( GetProcessHeap(), 0, name );
 602             if (ret > 0) ret = StartPage( hdc );
 603             return ret;
 604         }
 605
 606     case QUERYESCSUPPORT:
 607         {
 608             const INT *ptr = (const INT *)in_data;
 609             if (in_count < sizeof(INT)) return 0;
 610             switch(*ptr)
 611             {
 612             case ABORTDOC:
 613             case ENDDOC:
 614             case GETPHYSPAGESIZE:
 615             case GETPRINTINGOFFSET:
 616             case GETSCALINGFACTOR:
 617             case NEWFRAME:
 618             case QUERYESCSUPPORT:
 619             case SETABORTPROC:
 620             case STARTDOC:
 621                 return TRUE;
 622             }
 623             break;
 624         }
 625     }
 626
 627     /* if not handled internally, pass it to the driver */
 628     return ExtEscape( hdc, escape, in_count, in_data, 0, out_data );
 629 }
 630
 631
 632 /******************************************************************************
 633  *              ExtEscape       [GDI32.@]
 634  *
 635  * Access capabilities of a particular device that are not available through GDI.
 636  *
 637  * PARAMS
 638  *    hdc         [I] Handle to device context
 639  *    nEscape     [I] Escape function
 640  *    cbInput     [I] Number of bytes in input structure
 641  *    lpszInData  [I] Pointer to input structure
 642  *    cbOutput    [I] Number of bytes in output structure
 643  *    lpszOutData [O] Pointer to output structure
 644  *
 645  * RETURNS
 646  *    Success: >0
 647  *    Not implemented: 0
 648  *    Failure: <0
 649  */
 650 INT WINAPI ExtEscape( HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData,
 651                       INT cbOutput, LPSTR lpszOutData )
 652 {
 653     INT ret = 0;
 654     DC * dc = get_dc_ptr( hdc );
 655     if (dc)
 656     {
 657         if (dc->funcs->pExtEscape)
 658             ret = dc->funcs->pExtEscape( dc->physDev, nEscape, cbInput, lpszInData, cbOutput, lpszOutData );
 659         release_dc_ptr( dc );
 660     }
 661     return ret;
 662 }
 663
 664
 665 /*******************************************************************
 666  *      DrawEscape [GDI32.@]
 667  *
 668  *
 669  */
 670 INT WINAPI DrawEscape(HDC hdc, INT nEscape, INT cbInput, LPCSTR lpszInData)
 671 {
 672     FIXME("DrawEscape, stub\n");
 673     return 0;
 674 }
 675
 676 /*******************************************************************
 677  *      NamedEscape [GDI32.@]
 678  */
 679 INT WINAPI NamedEscape( HDC hdc, LPCWSTR pDriver, INT nEscape, INT cbInput, LPCSTR lpszInData,
 680                         INT cbOutput, LPSTR lpszOutData )
 681 {
 682     FIXME("(%p, %s, %d, %d, %p, %d, %p)\n",
 683           hdc, wine_dbgstr_w(pDriver), nEscape, cbInput, lpszInData, cbOutput,
 684           lpszOutData);
 685     return 0;
 686 }
 687
 688 /*******************************************************************
 689  *      DdQueryDisplaySettingsUniqueness [GDI32.@]
 690  *      GdiEntry13                       [GDI32.@]
 691  */
 692 ULONG WINAPI DdQueryDisplaySettingsUniqueness(VOID)
 693 {
 694     static int warn_once;
 695
 696     if (!warn_once++)
 697         FIXME("stub\n");
 698     return 0;
 699 }