dlls/gdi/mfdrv/init.c

   1 /*
   2  * Metafile driver initialisation functions
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wine/winbase16.h"
  27 #include "gdi.h"
  28 #include "wownt32.h"
  29 #include "mfdrv/metafiledrv.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(metafile);
  33
  34 static const DC_FUNCTIONS MFDRV_Funcs =
  35 {
  36     NULL,                            /* pAbortDoc */
  37     MFDRV_AbortPath,                 /* pAbortPath */
  38     NULL,                            /* pAngleArc */
  39     MFDRV_Arc,                       /* pArc */
  40     NULL,                            /* pArcTo */
  41     MFDRV_BeginPath,                 /* pBeginPath */
  42     MFDRV_BitBlt,                    /* pBitBlt */
  43     NULL,                            /* pChoosePixelFormat */
  44     MFDRV_Chord,                     /* pChord */
  45     MFDRV_CloseFigure,               /* pCloseFigure */
  46     NULL,                            /* pCreateBitmap */
  47     NULL,                            /* pCreateDC */
  48     NULL,                            /* pCreateDIBSection */
  49     NULL,                            /* pDeleteBitmap */
  50     NULL,                            /* pDeleteDC */
  51     NULL,                            /* pDescribePixelFormat */
  52     NULL,                            /* pDeviceCapabilities */
  53     MFDRV_Ellipse,                   /* pEllipse */
  54     NULL,                            /* pEndDoc */
  55     NULL,                            /* pEndPage */
  56     MFDRV_EndPath,                   /* pEndPath */
  57     NULL,                            /* pEnumDeviceFonts */
  58     MFDRV_ExcludeClipRect,           /* pExcludeClipRect */
  59     NULL,                            /* pExtDeviceMode */
  60     MFDRV_ExtEscape,                 /* pExtEscape */
  61     MFDRV_ExtFloodFill,              /* pExtFloodFill */
  62     MFDRV_ExtSelectClipRgn,          /* pExtSelectClipRgn */
  63     MFDRV_ExtTextOut,                /* pExtTextOut */
  64     MFDRV_FillPath,                  /* pFillPath */
  65     MFDRV_FillRgn,                   /* pFillRgn */
  66     MFDRV_FlattenPath,               /* pFlattenPath */
  67     MFDRV_FrameRgn,                  /* pFrameRgn */
  68     NULL,                            /* pGdiComment */
  69     NULL,                            /* pGetBitmapBits */
  70     NULL,                            /* pGetCharWidth */
  71     NULL,                            /* pGetDCOrgEx */
  72     NULL,                            /* pGetDIBColorTable */
  73     NULL,                            /* pGetDIBits */
  74     MFDRV_GetDeviceCaps,             /* pGetDeviceCaps */
  75     NULL,                            /* pGetDeviceGammaRamp */
  76     NULL,                            /* pGetNearestColor */
  77     NULL,                            /* pGetPixel */
  78     NULL,                            /* pGetPixelFormat */
  79     NULL,                            /* pGetSystemPaletteEntries */
  80     NULL,                            /* pGetTextExtentPoint */
  81     NULL,                            /* pGetTextMetrics */
  82     MFDRV_IntersectClipRect,         /* pIntersectClipRect */
  83     MFDRV_InvertRgn,                 /* pInvertRgn */
  84     MFDRV_LineTo,                    /* pLineTo */
  85     NULL,                            /* pModifyWorldTransform */
  86     MFDRV_MoveTo,                    /* pMoveTo */
  87     MFDRV_OffsetClipRgn,             /* pOffsetClipRgn */
  88     MFDRV_OffsetViewportOrg,         /* pOffsetViewportOrg */
  89     MFDRV_OffsetWindowOrg,           /* pOffsetWindowOrg */
  90     MFDRV_PaintRgn,                  /* pPaintRgn */
  91     MFDRV_PatBlt,                    /* pPatBlt */
  92     MFDRV_Pie,                       /* pPie */
  93     MFDRV_PolyBezier,                /* pPolyBezier */
  94     MFDRV_PolyBezierTo,              /* pPolyBezierTo */
  95     NULL,                            /* pPolyDraw */
  96     MFDRV_PolyPolygon,               /* pPolyPolygon */
  97     NULL,                            /* pPolyPolyline */
  98     MFDRV_Polygon,                   /* pPolygon */
  99     MFDRV_Polyline,                  /* pPolyline */
 100     NULL,                            /* pPolylineTo */
 101     NULL,                            /* pRealizeDefaultPalette */
 102     MFDRV_RealizePalette,            /* pRealizePalette */
 103     MFDRV_Rectangle,                 /* pRectangle */
 104     NULL,                            /* pResetDC */
 105     MFDRV_RestoreDC,                 /* pRestoreDC */
 106     MFDRV_RoundRect,                 /* pRoundRect */
 107     MFDRV_SaveDC,                    /* pSaveDC */
 108     MFDRV_ScaleViewportExt,          /* pScaleViewportExt */
 109     MFDRV_ScaleWindowExt,            /* pScaleWindowExt */
 110     MFDRV_SelectBitmap,              /* pSelectBitmap */
 111     MFDRV_SelectBrush,               /* pSelectBrush */
 112     MFDRV_SelectClipPath,            /* pSelectClipPath */
 113     MFDRV_SelectFont,                /* pSelectFont */
 114     MFDRV_SelectPalette,             /* pSelectPalette */
 115     MFDRV_SelectPen,                 /* pSelectPen */
 116     NULL,                            /* pSetBitmapBits */
 117     MFDRV_SetBkColor,                /* pSetBkColor */
 118     MFDRV_SetBkMode,                 /* pSetBkMode */
 119     NULL,                            /* pSetDCOrg */
 120     NULL,                            /* pSetDIBColorTable */
 121     NULL,                            /* pSetDIBits */
 122     MFDRV_SetDIBitsToDevice,         /* pSetDIBitsToDevice */
 123     NULL,                            /* pSetDeviceClipping */
 124     NULL,                            /* pSetDeviceGammaRamp */
 125     MFDRV_SetMapMode,                /* pSetMapMode */
 126     MFDRV_SetMapperFlags,            /* pSetMapperFlags */
 127     MFDRV_SetPixel,                  /* pSetPixel */
 128     NULL,                            /* pSetPixelFormat */
 129     MFDRV_SetPolyFillMode,           /* pSetPolyFillMode */
 130     MFDRV_SetROP2,                   /* pSetROP2 */
 131     MFDRV_SetRelAbs,                 /* pSetRelAbs */
 132     MFDRV_SetStretchBltMode,         /* pSetStretchBltMode */
 133     MFDRV_SetTextAlign,              /* pSetTextAlign */
 134     MFDRV_SetTextCharacterExtra,     /* pSetTextCharacterExtra */
 135     MFDRV_SetTextColor,              /* pSetTextColor */
 136     MFDRV_SetTextJustification,      /* pSetTextJustification */
 137     MFDRV_SetViewportExt,            /* pSetViewportExt */
 138     MFDRV_SetViewportOrg,            /* pSetViewportOrg */
 139     MFDRV_SetWindowExt,              /* pSetWindowExt */
 140     MFDRV_SetWindowOrg,              /* pSetWindowOrg */
 141     NULL,                            /* pSetWorldTransform */
 142     NULL,                            /* pStartDoc */
 143     NULL,                            /* pStartPage */
 144     MFDRV_StretchBlt,                /* pStretchBlt */
 145     MFDRV_StretchDIBits,             /* pStretchDIBits */
 146     MFDRV_StrokeAndFillPath,         /* pStrokeAndFillPath */
 147     MFDRV_StrokePath,                /* pStrokePath */
 148     NULL,                            /* pSwapBuffers */
 149     MFDRV_WidenPath                  /* pWidenPath */
 150 };
 151
 152
 153
 154 /**********************************************************************
 155  *           MFDRV_AllocMetaFile
 156  */
 157 static DC *MFDRV_AllocMetaFile(void)
 158 {
 159     DC *dc;
 160     METAFILEDRV_PDEVICE *physDev;
 161
 162     if (!(dc = DC_AllocDC( &MFDRV_Funcs, METAFILE_DC_MAGIC ))) return NULL;
 163
 164     physDev = (METAFILEDRV_PDEVICE *)HeapAlloc(GetProcessHeap(),0,sizeof(*physDev));
 165     if (!physDev)
 166     {
 167         GDI_FreeObject( dc->hSelf, dc );
 168         return NULL;
 169     }
 170     dc->physDev = (PHYSDEV)physDev;
 171     physDev->hdc = dc->hSelf;
 172     physDev->dc = dc;
 173
 174     if (!(physDev->mh = HeapAlloc( GetProcessHeap(), 0, sizeof(*physDev->mh) )))
 175     {
 176         HeapFree( GetProcessHeap(), 0, physDev );
 177         GDI_FreeObject( dc->hSelf, dc );
 178         return NULL;
 179     }
 180
 181     physDev->nextHandle = 0;
 182     physDev->hFile = 0;
 183
 184     physDev->mh->mtHeaderSize   = sizeof(METAHEADER) / sizeof(WORD);
 185     physDev->mh->mtVersion      = 0x0300;
 186     physDev->mh->mtSize         = physDev->mh->mtHeaderSize;
 187     physDev->mh->mtNoObjects    = 0;
 188     physDev->mh->mtMaxRecord    = 0;
 189     physDev->mh->mtNoParameters = 0;
 190
 191     return dc;
 192 }
 193
 194
 195 /**********************************************************************
 196  *           MFDRV_DeleteDC
 197  */
 198 static BOOL MFDRV_DeleteDC( PHYSDEV dev )
 199 {
 200     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 201     DC *dc = physDev->dc;
 202
 203     if (physDev->mh) HeapFree( GetProcessHeap(), 0, physDev->mh );
 204     HeapFree( GetProcessHeap(), 0, physDev );
 205     dc->physDev = NULL;
 206     GDI_FreeObject( dc->hSelf, dc );
 207     return TRUE;
 208 }
 209
 210
 211 /**********************************************************************
 212  *           CreateMetaFileA   (GDI32.@)
 213  *
 214  *  Create a new DC and associate it with a metafile. Pass a filename
 215  *  to create a disk-based metafile, NULL to create a memory metafile.
 216  *
 217  * RETURNS
 218  *  A handle to the metafile DC if successful, NULL on failure.
 219  */
 220 HDC WINAPI CreateMetaFileA( LPCSTR filename ) /* [in] Filename of disk metafile */
 221 {
 222     HDC ret;
 223     DC *dc;
 224     METAFILEDRV_PDEVICE *physDev;
 225     HANDLE hFile;
 226
 227     TRACE("'%s'\n", filename );
 228
 229     if (!(dc = MFDRV_AllocMetaFile())) return 0;
 230     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 231
 232     if (filename)  /* disk based metafile */
 233     {
 234         physDev->mh->mtType = METAFILE_DISK;
 235         if ((hFile = CreateFileA(filename, GENERIC_WRITE, 0, NULL,
 236                                 CREATE_ALWAYS, 0, 0)) == INVALID_HANDLE_VALUE) {
 237             MFDRV_DeleteDC( dc->physDev );
 238             return 0;
 239         }
 240         if (!WriteFile( hFile, (LPSTR)physDev->mh, sizeof(*physDev->mh), NULL,
 241                         NULL )) {
 242             MFDRV_DeleteDC( dc->physDev );
 243             return 0;
 244         }
 245         physDev->hFile = hFile;
 246
 247         /* Grow METAHEADER to include filename */
 248         physDev->mh = MF_CreateMetaHeaderDisk(physDev->mh, filename);
 249     }
 250     else  /* memory based metafile */
 251         physDev->mh->mtType = METAFILE_MEMORY;
 252
 253     TRACE("returning %p\n", dc->hSelf);
 254     ret = dc->hSelf;
 255     GDI_ReleaseObj( dc->hSelf );
 256     return ret;
 257 }
 258
 259 /**********************************************************************
 260  *          CreateMetaFileW   (GDI32.@)
 261  */
 262 HDC WINAPI CreateMetaFileW(LPCWSTR filename)
 263 {
 264     LPSTR filenameA;
 265     DWORD len;
 266     HDC hReturnDC;
 267
 268     if (!filename) return CreateMetaFileA(NULL);
 269
 270     len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 271     filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 272     WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 273
 274     hReturnDC = CreateMetaFileA(filenameA);
 275
 276     HeapFree( GetProcessHeap(), 0, filenameA );
 277
 278     return hReturnDC;
 279 }
 280
 281
 282 /**********************************************************************
 283  *          MFDRV_CloseMetaFile
 284  */
 285 static DC *MFDRV_CloseMetaFile( HDC hdc )
 286 {
 287     DC *dc;
 288     METAFILEDRV_PDEVICE *physDev;
 289
 290     TRACE("(%p)\n", hdc );
 291
 292     if (!(dc = (DC *) GDI_GetObjPtr( hdc, METAFILE_DC_MAGIC ))) return 0;
 293     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 294
 295     /* Construct the end of metafile record - this is documented
 296      * in SDK Knowledgebase Q99334.
 297      */
 298
 299     if (!MFDRV_MetaParam0(dc->physDev, META_EOF))
 300     {
 301         MFDRV_DeleteDC( dc->physDev );
 302         return 0;
 303     }
 304
 305     if (physDev->mh->mtType == METAFILE_DISK)  /* disk based metafile */
 306     {
 307         if (SetFilePointer(physDev->hFile, 0, NULL, FILE_BEGIN) != 0) {
 308             MFDRV_DeleteDC( dc->physDev );
 309             return 0;
 310         }
 311
 312         physDev->mh->mtType = METAFILE_MEMORY; /* This is what windows does */
 313         if (!WriteFile(physDev->hFile, (LPSTR)physDev->mh,
 314                        sizeof(*physDev->mh), NULL, NULL)) {
 315             MFDRV_DeleteDC( dc->physDev );
 316             return 0;
 317         }
 318         CloseHandle(physDev->hFile);
 319         physDev->mh->mtType = METAFILE_DISK;
 320     }
 321
 322     return dc;
 323 }
 324
 325 /******************************************************************
 326  *           CloseMetaFile     (GDI.126)
 327  */
 328 HMETAFILE16 WINAPI CloseMetaFile16(
 329                                    HDC16 hdc /* [in] Metafile DC to close */
 330 )
 331 {
 332     HMETAFILE16 hmf;
 333     METAFILEDRV_PDEVICE *physDev;
 334     DC *dc = MFDRV_CloseMetaFile(HDC_32(hdc));
 335     if (!dc) return 0;
 336     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 337
 338     /* Now allocate a global handle for the metafile */
 339
 340     hmf = MF_Create_HMETAFILE16( physDev->mh );
 341
 342     physDev->mh = NULL;  /* So it won't be deleted */
 343     MFDRV_DeleteDC( dc->physDev );
 344     return hmf;
 345 }
 346
 347 /******************************************************************
 348  *           CloseMetaFile   (GDI32.@)
 349  *
 350  *  Stop recording graphics operations in metafile associated with
 351  *  hdc and retrieve metafile.
 352  *
 353  * RETURNS
 354  *  Handle of newly created metafile on success, NULL on failure.
 355  */
 356 HMETAFILE WINAPI CloseMetaFile(
 357                                    HDC hdc /* [in] Metafile DC to close */
 358 )
 359 {
 360     HMETAFILE hmf;
 361     METAFILEDRV_PDEVICE *physDev;
 362     DC *dc = MFDRV_CloseMetaFile(hdc);
 363     if (!dc) return 0;
 364     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 365
 366     /* Now allocate a global handle for the metafile */
 367
 368     hmf = MF_Create_HMETAFILE( physDev->mh );
 369
 370     physDev->mh = NULL;  /* So it won't be deleted */
 371     MFDRV_DeleteDC( dc->physDev );
 372     return hmf;
 373 }
 374
 375
 376 /******************************************************************
 377  *         MFDRV_WriteRecord
 378  *
 379  * Warning: this function can change the pointer to the metafile header.
 380  */
 381 BOOL MFDRV_WriteRecord( PHYSDEV dev, METARECORD *mr, DWORD rlen)
 382 {
 383     DWORD len, size;
 384     METAHEADER *mh;
 385     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 386
 387     switch(physDev->mh->mtType)
 388     {
 389     case METAFILE_MEMORY:
 390         len = physDev->mh->mtSize * 2 + rlen;
 391         /* reallocate memory if needed */
 392         size = HeapSize( GetProcessHeap(), 0, physDev->mh );
 393         if (len > size)
 394         {
 395             /*expand size*/
 396             size += size / 2 + rlen;
 397             mh = HeapReAlloc( GetProcessHeap(), 0, physDev->mh, size);
 398             if (!mh) return FALSE;
 399             physDev->mh = mh;
 400             TRACE("Reallocated metafile: new size is %ld\n",size);
 401         }
 402         memcpy((WORD *)physDev->mh + physDev->mh->mtSize, mr, rlen);
 403         break;
 404     case METAFILE_DISK:
 405         TRACE("Writing record to disk\n");
 406         if (!WriteFile(physDev->hFile, (char *)mr, rlen, NULL, NULL))
 407             return FALSE;
 408         break;
 409     default:
 410         ERR("Unknown metafile type %d\n", physDev->mh->mtType );
 411         return FALSE;
 412     }
 413
 414     physDev->mh->mtSize += rlen / 2;
 415     physDev->mh->mtMaxRecord = max(physDev->mh->mtMaxRecord, rlen / 2);
 416     return TRUE;
 417 }
 418
 419
 420 /******************************************************************
 421  *         MFDRV_MetaParam0
 422  */
 423
 424 BOOL MFDRV_MetaParam0(PHYSDEV dev, short func)
 425 {
 426     char buffer[8];
 427     METARECORD *mr = (METARECORD *)&buffer;
 428
 429     mr->rdSize = 3;
 430     mr->rdFunction = func;
 431     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 432 }
 433
 434
 435 /******************************************************************
 436  *         MFDRV_MetaParam1
 437  */
 438 BOOL MFDRV_MetaParam1(PHYSDEV dev, short func, short param1)
 439 {
 440     char buffer[8];
 441     METARECORD *mr = (METARECORD *)&buffer;
 442
 443     mr->rdSize = 4;
 444     mr->rdFunction = func;
 445     *(mr->rdParm) = param1;
 446     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 447 }
 448
 449
 450 /******************************************************************
 451  *         MFDRV_MetaParam2
 452  */
 453 BOOL MFDRV_MetaParam2(PHYSDEV dev, short func, short param1, short param2)
 454 {
 455     char buffer[10];
 456     METARECORD *mr = (METARECORD *)&buffer;
 457
 458     mr->rdSize = 5;
 459     mr->rdFunction = func;
 460     *(mr->rdParm) = param2;
 461     *(mr->rdParm + 1) = param1;
 462     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 463 }
 464
 465
 466 /******************************************************************
 467  *         MFDRV_MetaParam4
 468  */
 469
 470 BOOL MFDRV_MetaParam4(PHYSDEV dev, short func, short param1, short param2,
 471                       short param3, short param4)
 472 {
 473     char buffer[14];
 474     METARECORD *mr = (METARECORD *)&buffer;
 475
 476     mr->rdSize = 7;
 477     mr->rdFunction = func;
 478     *(mr->rdParm) = param4;
 479     *(mr->rdParm + 1) = param3;
 480     *(mr->rdParm + 2) = param2;
 481     *(mr->rdParm + 3) = param1;
 482     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 483 }
 484
 485
 486 /******************************************************************
 487  *         MFDRV_MetaParam6
 488  */
 489
 490 BOOL MFDRV_MetaParam6(PHYSDEV dev, short func, short param1, short param2,
 491                       short param3, short param4, short param5, short param6)
 492 {
 493     char buffer[18];
 494     METARECORD *mr = (METARECORD *)&buffer;
 495
 496     mr->rdSize = 9;
 497     mr->rdFunction = func;
 498     *(mr->rdParm) = param6;
 499     *(mr->rdParm + 1) = param5;
 500     *(mr->rdParm + 2) = param4;
 501     *(mr->rdParm + 3) = param3;
 502     *(mr->rdParm + 4) = param2;
 503     *(mr->rdParm + 5) = param1;
 504     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 505 }
 506
 507
 508 /******************************************************************
 509  *         MFDRV_MetaParam8
 510  */
 511 BOOL MFDRV_MetaParam8(PHYSDEV dev, short func, short param1, short param2,
 512                       short param3, short param4, short param5,
 513                       short param6, short param7, short param8)
 514 {
 515     char buffer[22];
 516     METARECORD *mr = (METARECORD *)&buffer;
 517
 518     mr->rdSize = 11;
 519     mr->rdFunction = func;
 520     *(mr->rdParm) = param8;
 521     *(mr->rdParm + 1) = param7;
 522     *(mr->rdParm + 2) = param6;
 523     *(mr->rdParm + 3) = param5;
 524     *(mr->rdParm + 4) = param4;
 525     *(mr->rdParm + 5) = param3;
 526     *(mr->rdParm + 6) = param2;
 527     *(mr->rdParm + 7) = param1;
 528     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 529 }
 530
 531
 532 /******************************************************************
 533  *         MFDRV_AddHandleDC
 534  *
 535  * Note: this function assumes that we never delete objects.
 536  * If we do someday, we'll need to maintain a table to re-use deleted
 537  * handles.
 538  */
 539 int MFDRV_AddHandleDC( PHYSDEV dev )
 540 {
 541     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 542     physDev->mh->mtNoObjects++;
 543     return physDev->nextHandle++;
 544 }
 545
 546 /**********************************************************************
 547  *           MFDRV_ExtEscape
 548  */
 549 INT MFDRV_ExtEscape( PHYSDEV dev, INT nEscape, INT cbInput, LPCVOID in_data,
 550                      INT cbOutput, LPVOID out_data )
 551 {
 552     METARECORD *mr;
 553     DWORD len;
 554     INT ret;
 555
 556     len = sizeof(*mr) + sizeof(WORD) + ((cbInput + 1) & ~1);
 557     mr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
 558     mr->rdSize = len / 2;
 559     mr->rdFunction = META_ESCAPE;
 560     mr->rdParm[0] = nEscape;
 561     mr->rdParm[1] = cbInput;
 562     memcpy(&(mr->rdParm[2]), in_data, cbInput);
 563     ret = MFDRV_WriteRecord( dev, mr, len);
 564     HeapFree(GetProcessHeap(), 0, mr);
 565     return ret;
 566 }
 567
 568
 569 /******************************************************************
 570  *         MFDRV_GetDeviceCaps
 571  *
 572  *A very simple implementation that returns DT_METAFILE
 573  */
 574 INT MFDRV_GetDeviceCaps(PHYSDEV dev, INT cap)
 575 {
 576     switch(cap)
 577     {
 578     case TECHNOLOGY:
 579         return DT_METAFILE;
 580     case TEXTCAPS:
 581         return 0;
 582     default:
 583         TRACE(" unsupported capability %d, will return 0\n", cap );
 584     }
 585     return 0;
 586 }