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,                            /* pSetArcDirection */
 117     NULL,                            /* pSetBitmapBits */
 118     MFDRV_SetBkColor,                /* pSetBkColor */
 119     MFDRV_SetBkMode,                 /* pSetBkMode */
 120     NULL,                            /* pSetDCBrushColor*/
 121     NULL,                            /* pSetDCOrg */
 122     NULL,                            /* pSetDCPenColor*/
 123     NULL,                            /* pSetDIBColorTable */
 124     NULL,                            /* pSetDIBits */
 125     MFDRV_SetDIBitsToDevice,         /* pSetDIBitsToDevice */
 126     NULL,                            /* pSetDeviceClipping */
 127     NULL,                            /* pSetDeviceGammaRamp */
 128     MFDRV_SetMapMode,                /* pSetMapMode */
 129     MFDRV_SetMapperFlags,            /* pSetMapperFlags */
 130     MFDRV_SetPixel,                  /* pSetPixel */
 131     NULL,                            /* pSetPixelFormat */
 132     MFDRV_SetPolyFillMode,           /* pSetPolyFillMode */
 133     MFDRV_SetROP2,                   /* pSetROP2 */
 134     MFDRV_SetRelAbs,                 /* pSetRelAbs */
 135     MFDRV_SetStretchBltMode,         /* pSetStretchBltMode */
 136     MFDRV_SetTextAlign,              /* pSetTextAlign */
 137     MFDRV_SetTextCharacterExtra,     /* pSetTextCharacterExtra */
 138     MFDRV_SetTextColor,              /* pSetTextColor */
 139     MFDRV_SetTextJustification,      /* pSetTextJustification */
 140     MFDRV_SetViewportExt,            /* pSetViewportExt */
 141     MFDRV_SetViewportOrg,            /* pSetViewportOrg */
 142     MFDRV_SetWindowExt,              /* pSetWindowExt */
 143     MFDRV_SetWindowOrg,              /* pSetWindowOrg */
 144     NULL,                            /* pSetWorldTransform */
 145     NULL,                            /* pStartDoc */
 146     NULL,                            /* pStartPage */
 147     MFDRV_StretchBlt,                /* pStretchBlt */
 148     MFDRV_StretchDIBits,             /* pStretchDIBits */
 149     MFDRV_StrokeAndFillPath,         /* pStrokeAndFillPath */
 150     MFDRV_StrokePath,                /* pStrokePath */
 151     NULL,                            /* pSwapBuffers */
 152     MFDRV_WidenPath                  /* pWidenPath */
 153 };
 154
 155
 156
 157 /**********************************************************************
 158  *           MFDRV_AllocMetaFile
 159  */
 160 static DC *MFDRV_AllocMetaFile(void)
 161 {
 162     DC *dc;
 163     METAFILEDRV_PDEVICE *physDev;
 164
 165     if (!(dc = DC_AllocDC( &MFDRV_Funcs, METAFILE_DC_MAGIC ))) return NULL;
 166
 167     physDev = (METAFILEDRV_PDEVICE *)HeapAlloc(GetProcessHeap(),0,sizeof(*physDev));
 168     if (!physDev)
 169     {
 170         GDI_FreeObject( dc->hSelf, dc );
 171         return NULL;
 172     }
 173     dc->physDev = (PHYSDEV)physDev;
 174     physDev->hdc = dc->hSelf;
 175     physDev->dc = dc;
 176
 177     if (!(physDev->mh = HeapAlloc( GetProcessHeap(), 0, sizeof(*physDev->mh) )))
 178     {
 179         HeapFree( GetProcessHeap(), 0, physDev );
 180         GDI_FreeObject( dc->hSelf, dc );
 181         return NULL;
 182     }
 183
 184     physDev->nextHandle = 0;
 185     physDev->hFile = 0;
 186
 187     physDev->mh->mtHeaderSize   = sizeof(METAHEADER) / sizeof(WORD);
 188     physDev->mh->mtVersion      = 0x0300;
 189     physDev->mh->mtSize         = physDev->mh->mtHeaderSize;
 190     physDev->mh->mtNoObjects    = 0;
 191     physDev->mh->mtMaxRecord    = 0;
 192     physDev->mh->mtNoParameters = 0;
 193
 194     return dc;
 195 }
 196
 197
 198 /**********************************************************************
 199  *           MFDRV_DeleteDC
 200  */
 201 static BOOL MFDRV_DeleteDC( PHYSDEV dev )
 202 {
 203     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 204     DC *dc = physDev->dc;
 205
 206     if (physDev->mh) HeapFree( GetProcessHeap(), 0, physDev->mh );
 207     HeapFree( GetProcessHeap(), 0, physDev );
 208     dc->physDev = NULL;
 209     GDI_FreeObject( dc->hSelf, dc );
 210     return TRUE;
 211 }
 212
 213
 214 /**********************************************************************
 215  *           CreateMetaFileA   (GDI32.@)
 216  *
 217  *  Create a new DC and associate it with a metafile. Pass a filename
 218  *  to create a disk-based metafile, NULL to create a memory metafile.
 219  *
 220  * RETURNS
 221  *  A handle to the metafile DC if successful, NULL on failure.
 222  */
 223 HDC WINAPI CreateMetaFileA( LPCSTR filename ) /* [in] Filename of disk metafile */
 224 {
 225     HDC ret;
 226     DC *dc;
 227     METAFILEDRV_PDEVICE *physDev;
 228     HANDLE hFile;
 229
 230     TRACE("'%s'\n", filename );
 231
 232     if (!(dc = MFDRV_AllocMetaFile())) return 0;
 233     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 234
 235     if (filename)  /* disk based metafile */
 236     {
 237         physDev->mh->mtType = METAFILE_DISK;
 238         if ((hFile = CreateFileA(filename, GENERIC_WRITE, 0, NULL,
 239                                 CREATE_ALWAYS, 0, 0)) == INVALID_HANDLE_VALUE) {
 240             MFDRV_DeleteDC( dc->physDev );
 241             return 0;
 242         }
 243         if (!WriteFile( hFile, (LPSTR)physDev->mh, sizeof(*physDev->mh), NULL,
 244                         NULL )) {
 245             MFDRV_DeleteDC( dc->physDev );
 246             return 0;
 247         }
 248         physDev->hFile = hFile;
 249
 250         /* Grow METAHEADER to include filename */
 251         physDev->mh = MF_CreateMetaHeaderDisk(physDev->mh, filename);
 252     }
 253     else  /* memory based metafile */
 254         physDev->mh->mtType = METAFILE_MEMORY;
 255
 256     TRACE("returning %p\n", dc->hSelf);
 257     ret = dc->hSelf;
 258     GDI_ReleaseObj( dc->hSelf );
 259     return ret;
 260 }
 261
 262 /**********************************************************************
 263  *          CreateMetaFileW   (GDI32.@)
 264  */
 265 HDC WINAPI CreateMetaFileW(LPCWSTR filename)
 266 {
 267     LPSTR filenameA;
 268     DWORD len;
 269     HDC hReturnDC;
 270
 271     if (!filename) return CreateMetaFileA(NULL);
 272
 273     len = WideCharToMultiByte( CP_ACP, 0, filename, -1, NULL, 0, NULL, NULL );
 274     filenameA = HeapAlloc( GetProcessHeap(), 0, len );
 275     WideCharToMultiByte( CP_ACP, 0, filename, -1, filenameA, len, NULL, NULL );
 276
 277     hReturnDC = CreateMetaFileA(filenameA);
 278
 279     HeapFree( GetProcessHeap(), 0, filenameA );
 280
 281     return hReturnDC;
 282 }
 283
 284
 285 /**********************************************************************
 286  *          MFDRV_CloseMetaFile
 287  */
 288 static DC *MFDRV_CloseMetaFile( HDC hdc )
 289 {
 290     DC *dc;
 291     METAFILEDRV_PDEVICE *physDev;
 292
 293     TRACE("(%p)\n", hdc );
 294
 295     if (!(dc = (DC *) GDI_GetObjPtr( hdc, METAFILE_DC_MAGIC ))) return 0;
 296     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 297
 298     /* Construct the end of metafile record - this is documented
 299      * in SDK Knowledgebase Q99334.
 300      */
 301
 302     if (!MFDRV_MetaParam0(dc->physDev, META_EOF))
 303     {
 304         MFDRV_DeleteDC( dc->physDev );
 305         return 0;
 306     }
 307
 308     if (physDev->mh->mtType == METAFILE_DISK)  /* disk based metafile */
 309     {
 310         if (SetFilePointer(physDev->hFile, 0, NULL, FILE_BEGIN) != 0) {
 311             MFDRV_DeleteDC( dc->physDev );
 312             return 0;
 313         }
 314
 315         physDev->mh->mtType = METAFILE_MEMORY; /* This is what windows does */
 316         if (!WriteFile(physDev->hFile, (LPSTR)physDev->mh,
 317                        sizeof(*physDev->mh), NULL, NULL)) {
 318             MFDRV_DeleteDC( dc->physDev );
 319             return 0;
 320         }
 321         CloseHandle(physDev->hFile);
 322         physDev->mh->mtType = METAFILE_DISK;
 323     }
 324
 325     return dc;
 326 }
 327
 328 /******************************************************************
 329  *           CloseMetaFile     (GDI.126)
 330  */
 331 HMETAFILE16 WINAPI CloseMetaFile16(
 332                                    HDC16 hdc /* [in] Metafile DC to close */
 333 )
 334 {
 335     HMETAFILE16 hmf;
 336     METAFILEDRV_PDEVICE *physDev;
 337     DC *dc = MFDRV_CloseMetaFile(HDC_32(hdc));
 338     if (!dc) return 0;
 339     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 340
 341     /* Now allocate a global handle for the metafile */
 342
 343     hmf = MF_Create_HMETAFILE16( physDev->mh );
 344
 345     physDev->mh = NULL;  /* So it won't be deleted */
 346     MFDRV_DeleteDC( dc->physDev );
 347     return hmf;
 348 }
 349
 350 /******************************************************************
 351  *           CloseMetaFile   (GDI32.@)
 352  *
 353  *  Stop recording graphics operations in metafile associated with
 354  *  hdc and retrieve metafile.
 355  *
 356  * RETURNS
 357  *  Handle of newly created metafile on success, NULL on failure.
 358  */
 359 HMETAFILE WINAPI CloseMetaFile(
 360                                    HDC hdc /* [in] Metafile DC to close */
 361 )
 362 {
 363     HMETAFILE hmf;
 364     METAFILEDRV_PDEVICE *physDev;
 365     DC *dc = MFDRV_CloseMetaFile(hdc);
 366     if (!dc) return 0;
 367     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 368
 369     /* Now allocate a global handle for the metafile */
 370
 371     hmf = MF_Create_HMETAFILE( physDev->mh );
 372
 373     physDev->mh = NULL;  /* So it won't be deleted */
 374     MFDRV_DeleteDC( dc->physDev );
 375     return hmf;
 376 }
 377
 378
 379 /******************************************************************
 380  *         MFDRV_WriteRecord
 381  *
 382  * Warning: this function can change the pointer to the metafile header.
 383  */
 384 BOOL MFDRV_WriteRecord( PHYSDEV dev, METARECORD *mr, DWORD rlen)
 385 {
 386     DWORD len, size;
 387     METAHEADER *mh;
 388     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 389
 390     switch(physDev->mh->mtType)
 391     {
 392     case METAFILE_MEMORY:
 393         len = physDev->mh->mtSize * 2 + rlen;
 394         /* reallocate memory if needed */
 395         size = HeapSize( GetProcessHeap(), 0, physDev->mh );
 396         if (len > size)
 397         {
 398             /*expand size*/
 399             size += size / 2 + rlen;
 400             mh = HeapReAlloc( GetProcessHeap(), 0, physDev->mh, size);
 401             if (!mh) return FALSE;
 402             physDev->mh = mh;
 403             TRACE("Reallocated metafile: new size is %ld\n",size);
 404         }
 405         memcpy((WORD *)physDev->mh + physDev->mh->mtSize, mr, rlen);
 406         break;
 407     case METAFILE_DISK:
 408         TRACE("Writing record to disk\n");
 409         if (!WriteFile(physDev->hFile, (char *)mr, rlen, NULL, NULL))
 410             return FALSE;
 411         break;
 412     default:
 413         ERR("Unknown metafile type %d\n", physDev->mh->mtType );
 414         return FALSE;
 415     }
 416
 417     physDev->mh->mtSize += rlen / 2;
 418     physDev->mh->mtMaxRecord = max(physDev->mh->mtMaxRecord, rlen / 2);
 419     return TRUE;
 420 }
 421
 422
 423 /******************************************************************
 424  *         MFDRV_MetaParam0
 425  */
 426
 427 BOOL MFDRV_MetaParam0(PHYSDEV dev, short func)
 428 {
 429     char buffer[8];
 430     METARECORD *mr = (METARECORD *)&buffer;
 431
 432     mr->rdSize = 3;
 433     mr->rdFunction = func;
 434     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 435 }
 436
 437
 438 /******************************************************************
 439  *         MFDRV_MetaParam1
 440  */
 441 BOOL MFDRV_MetaParam1(PHYSDEV dev, short func, short param1)
 442 {
 443     char buffer[8];
 444     METARECORD *mr = (METARECORD *)&buffer;
 445
 446     mr->rdSize = 4;
 447     mr->rdFunction = func;
 448     *(mr->rdParm) = param1;
 449     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 450 }
 451
 452
 453 /******************************************************************
 454  *         MFDRV_MetaParam2
 455  */
 456 BOOL MFDRV_MetaParam2(PHYSDEV dev, short func, short param1, short param2)
 457 {
 458     char buffer[10];
 459     METARECORD *mr = (METARECORD *)&buffer;
 460
 461     mr->rdSize = 5;
 462     mr->rdFunction = func;
 463     *(mr->rdParm) = param2;
 464     *(mr->rdParm + 1) = param1;
 465     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 466 }
 467
 468
 469 /******************************************************************
 470  *         MFDRV_MetaParam4
 471  */
 472
 473 BOOL MFDRV_MetaParam4(PHYSDEV dev, short func, short param1, short param2,
 474                       short param3, short param4)
 475 {
 476     char buffer[14];
 477     METARECORD *mr = (METARECORD *)&buffer;
 478
 479     mr->rdSize = 7;
 480     mr->rdFunction = func;
 481     *(mr->rdParm) = param4;
 482     *(mr->rdParm + 1) = param3;
 483     *(mr->rdParm + 2) = param2;
 484     *(mr->rdParm + 3) = param1;
 485     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 486 }
 487
 488
 489 /******************************************************************
 490  *         MFDRV_MetaParam6
 491  */
 492
 493 BOOL MFDRV_MetaParam6(PHYSDEV dev, short func, short param1, short param2,
 494                       short param3, short param4, short param5, short param6)
 495 {
 496     char buffer[18];
 497     METARECORD *mr = (METARECORD *)&buffer;
 498
 499     mr->rdSize = 9;
 500     mr->rdFunction = func;
 501     *(mr->rdParm) = param6;
 502     *(mr->rdParm + 1) = param5;
 503     *(mr->rdParm + 2) = param4;
 504     *(mr->rdParm + 3) = param3;
 505     *(mr->rdParm + 4) = param2;
 506     *(mr->rdParm + 5) = param1;
 507     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 508 }
 509
 510
 511 /******************************************************************
 512  *         MFDRV_MetaParam8
 513  */
 514 BOOL MFDRV_MetaParam8(PHYSDEV dev, short func, short param1, short param2,
 515                       short param3, short param4, short param5,
 516                       short param6, short param7, short param8)
 517 {
 518     char buffer[22];
 519     METARECORD *mr = (METARECORD *)&buffer;
 520
 521     mr->rdSize = 11;
 522     mr->rdFunction = func;
 523     *(mr->rdParm) = param8;
 524     *(mr->rdParm + 1) = param7;
 525     *(mr->rdParm + 2) = param6;
 526     *(mr->rdParm + 3) = param5;
 527     *(mr->rdParm + 4) = param4;
 528     *(mr->rdParm + 5) = param3;
 529     *(mr->rdParm + 6) = param2;
 530     *(mr->rdParm + 7) = param1;
 531     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 532 }
 533
 534
 535 /******************************************************************
 536  *         MFDRV_AddHandleDC
 537  *
 538  * Note: this function assumes that we never delete objects.
 539  * If we do someday, we'll need to maintain a table to re-use deleted
 540  * handles.
 541  */
 542 int MFDRV_AddHandleDC( PHYSDEV dev )
 543 {
 544     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 545     physDev->mh->mtNoObjects++;
 546     return physDev->nextHandle++;
 547 }
 548
 549 /**********************************************************************
 550  *           MFDRV_ExtEscape
 551  */
 552 INT MFDRV_ExtEscape( PHYSDEV dev, INT nEscape, INT cbInput, LPCVOID in_data,
 553                      INT cbOutput, LPVOID out_data )
 554 {
 555     METARECORD *mr;
 556     DWORD len;
 557     INT ret;
 558
 559     len = sizeof(*mr) + sizeof(WORD) + ((cbInput + 1) & ~1);
 560     mr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
 561     mr->rdSize = len / 2;
 562     mr->rdFunction = META_ESCAPE;
 563     mr->rdParm[0] = nEscape;
 564     mr->rdParm[1] = cbInput;
 565     memcpy(&(mr->rdParm[2]), in_data, cbInput);
 566     ret = MFDRV_WriteRecord( dev, mr, len);
 567     HeapFree(GetProcessHeap(), 0, mr);
 568     return ret;
 569 }
 570
 571
 572 /******************************************************************
 573  *         MFDRV_GetDeviceCaps
 574  *
 575  *A very simple implementation that returns DT_METAFILE
 576  */
 577 INT MFDRV_GetDeviceCaps(PHYSDEV dev, INT cap)
 578 {
 579     switch(cap)
 580     {
 581     case TECHNOLOGY:
 582         return DT_METAFILE;
 583     case TEXTCAPS:
 584         return 0;
 585     default:
 586         TRACE(" unsupported capability %d, will return 0\n", cap );
 587     }
 588     return 0;
 589 }