dlls/gdi32/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "winnls.h"
  27 #include "gdi_private.h"
  28 #include "mfdrv/metafiledrv.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(metafile);
  32
  33 static BOOL MFDRV_CreateCompatibleDC( PHYSDEV orig, PHYSDEV *pdev );
  34 static BOOL MFDRV_DeleteDC( PHYSDEV dev );
  35
  36
  37 /**********************************************************************
  38  *           MFDRV_ExtEscape
  39  */
  40 static INT MFDRV_ExtEscape( PHYSDEV dev, INT nEscape, INT cbInput, LPCVOID in_data,
  41                             INT cbOutput, LPVOID out_data )
  42 {
  43     METARECORD *mr;
  44     DWORD len;
  45     INT ret;
  46
  47     if (cbOutput) return 0;  /* escapes that require output cannot work in metafiles */
  48
  49     len = sizeof(*mr) + sizeof(WORD) + ((cbInput + 1) & ~1);
  50     mr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
  51     mr->rdSize = len / 2;
  52     mr->rdFunction = META_ESCAPE;
  53     mr->rdParm[0] = nEscape;
  54     mr->rdParm[1] = cbInput;
  55     memcpy(&(mr->rdParm[2]), in_data, cbInput);
  56     ret = MFDRV_WriteRecord( dev, mr, len);
  57     HeapFree(GetProcessHeap(), 0, mr);
  58     return ret;
  59 }
  60
  61
  62 /******************************************************************
  63  *         MFDRV_GetDeviceCaps
  64  *
  65  *A very simple implementation that returns DT_METAFILE
  66  */
  67 static INT MFDRV_GetDeviceCaps(PHYSDEV dev, INT cap)
  68 {
  69     switch(cap)
  70     {
  71     case TECHNOLOGY:
  72         return DT_METAFILE;
  73     case TEXTCAPS:
  74         return 0;
  75     default:
  76         TRACE(" unsupported capability %d, will return 0\n", cap );
  77     }
  78     return 0;
  79 }
  80
  81
  82 static const DC_FUNCTIONS MFDRV_Funcs =
  83 {
  84     NULL,                            /* pAbortDoc */
  85     MFDRV_AbortPath,                 /* pAbortPath */
  86     NULL,                            /* pAlphaBlend */
  87     NULL,                            /* pAngleArc */
  88     MFDRV_Arc,                       /* pArc */
  89     NULL,                            /* pArcTo */
  90     MFDRV_BeginPath,                 /* pBeginPath */
  91     NULL,                            /* pBlendImage */
  92     NULL,                            /* pChoosePixelFormat */
  93     MFDRV_Chord,                     /* pChord */
  94     MFDRV_CloseFigure,               /* pCloseFigure */
  95     NULL,                            /* pCreateBitmap */
  96     MFDRV_CreateCompatibleDC,        /* pCreateCompatibleDC */
  97     NULL,                            /* pCreateDC */
  98     NULL,                            /* pCreateDIBSection */
  99     NULL,                            /* pDeleteBitmap */
 100     MFDRV_DeleteDC,                  /* pDeleteDC */
 101     MFDRV_DeleteObject,              /* pDeleteObject */
 102     NULL,                            /* pDescribePixelFormat */
 103     NULL,                            /* pDeviceCapabilities */
 104     MFDRV_Ellipse,                   /* pEllipse */
 105     NULL,                            /* pEndDoc */
 106     NULL,                            /* pEndPage */
 107     MFDRV_EndPath,                   /* pEndPath */
 108     NULL,                            /* pEnumDeviceFonts */
 109     NULL,                            /* pEnumICMProfiles */
 110     MFDRV_ExcludeClipRect,           /* pExcludeClipRect */
 111     NULL,                            /* pExtDeviceMode */
 112     MFDRV_ExtEscape,                 /* pExtEscape */
 113     MFDRV_ExtFloodFill,              /* pExtFloodFill */
 114     MFDRV_ExtSelectClipRgn,          /* pExtSelectClipRgn */
 115     MFDRV_ExtTextOut,                /* pExtTextOut */
 116     MFDRV_FillPath,                  /* pFillPath */
 117     MFDRV_FillRgn,                   /* pFillRgn */
 118     MFDRV_FlattenPath,               /* pFlattenPath */
 119     MFDRV_FrameRgn,                  /* pFrameRgn */
 120     NULL,                            /* pGdiComment */
 121     NULL,                            /* pGetCharWidth */
 122     MFDRV_GetDeviceCaps,             /* pGetDeviceCaps */
 123     NULL,                            /* pGetDeviceGammaRamp */
 124     NULL,                            /* pGetICMProfile */
 125     NULL,                            /* pGetImage */
 126     NULL,                            /* pGetNearestColor */
 127     NULL,                            /* pGetPixel */
 128     NULL,                            /* pGetPixelFormat */
 129     NULL,                            /* pGetSystemPaletteEntries */
 130     NULL,                            /* pGetTextExtentExPoint */
 131     NULL,                            /* pGetTextMetrics */
 132     MFDRV_IntersectClipRect,         /* pIntersectClipRect */
 133     MFDRV_InvertRgn,                 /* pInvertRgn */
 134     MFDRV_LineTo,                    /* pLineTo */
 135     NULL,                            /* pModifyWorldTransform */
 136     MFDRV_MoveTo,                    /* pMoveTo */
 137     MFDRV_OffsetClipRgn,             /* pOffsetClipRgn */
 138     MFDRV_OffsetViewportOrgEx,       /* pOffsetViewportOrgEx */
 139     MFDRV_OffsetWindowOrgEx,         /* pOffsetWindowOrgEx */
 140     MFDRV_PaintRgn,                  /* pPaintRgn */
 141     MFDRV_PatBlt,                    /* pPatBlt */
 142     MFDRV_Pie,                       /* pPie */
 143     MFDRV_PolyBezier,                /* pPolyBezier */
 144     MFDRV_PolyBezierTo,              /* pPolyBezierTo */
 145     NULL,                            /* pPolyDraw */
 146     MFDRV_PolyPolygon,               /* pPolyPolygon */
 147     NULL,                            /* pPolyPolyline */
 148     MFDRV_Polygon,                   /* pPolygon */
 149     MFDRV_Polyline,                  /* pPolyline */
 150     NULL,                            /* pPolylineTo */
 151     NULL,                            /* pPutImage */
 152     NULL,                            /* pRealizeDefaultPalette */
 153     MFDRV_RealizePalette,            /* pRealizePalette */
 154     MFDRV_Rectangle,                 /* pRectangle */
 155     NULL,                            /* pResetDC */
 156     MFDRV_RestoreDC,                 /* pRestoreDC */
 157     MFDRV_RoundRect,                 /* pRoundRect */
 158     MFDRV_SaveDC,                    /* pSaveDC */
 159     MFDRV_ScaleViewportExtEx,        /* pScaleViewportExtEx */
 160     MFDRV_ScaleWindowExtEx,          /* pScaleWindowExtEx */
 161     MFDRV_SelectBitmap,              /* pSelectBitmap */
 162     MFDRV_SelectBrush,               /* pSelectBrush */
 163     MFDRV_SelectClipPath,            /* pSelectClipPath */
 164     MFDRV_SelectFont,                /* pSelectFont */
 165     MFDRV_SelectPalette,             /* pSelectPalette */
 166     MFDRV_SelectPen,                 /* pSelectPen */
 167     NULL,                            /* pSetArcDirection */
 168     MFDRV_SetBkColor,                /* pSetBkColor */
 169     MFDRV_SetBkMode,                 /* pSetBkMode */
 170     MFDRV_SetDCBrushColor,           /* pSetDCBrushColor*/
 171     MFDRV_SetDCPenColor,             /* pSetDCPenColor*/
 172     NULL,                            /* pSetDIBColorTable */
 173     MFDRV_SetDIBitsToDevice,         /* pSetDIBitsToDevice */
 174     NULL,                            /* pSetDeviceClipping */
 175     NULL,                            /* pSetDeviceGammaRamp */
 176     NULL,                            /* pSetLayout */
 177     MFDRV_SetMapMode,                /* pSetMapMode */
 178     MFDRV_SetMapperFlags,            /* pSetMapperFlags */
 179     MFDRV_SetPixel,                  /* pSetPixel */
 180     NULL,                            /* pSetPixelFormat */
 181     MFDRV_SetPolyFillMode,           /* pSetPolyFillMode */
 182     MFDRV_SetROP2,                   /* pSetROP2 */
 183     MFDRV_SetRelAbs,                 /* pSetRelAbs */
 184     MFDRV_SetStretchBltMode,         /* pSetStretchBltMode */
 185     MFDRV_SetTextAlign,              /* pSetTextAlign */
 186     MFDRV_SetTextCharacterExtra,     /* pSetTextCharacterExtra */
 187     MFDRV_SetTextColor,              /* pSetTextColor */
 188     MFDRV_SetTextJustification,      /* pSetTextJustification */
 189     MFDRV_SetViewportExtEx,          /* pSetViewportExtEx */
 190     MFDRV_SetViewportOrgEx,          /* pSetViewportOrgEx */
 191     MFDRV_SetWindowExtEx,            /* pSetWindowExtEx */
 192     MFDRV_SetWindowOrgEx,            /* pSetWindowOrgEx */
 193     NULL,                            /* pSetWorldTransform */
 194     NULL,                            /* pStartDoc */
 195     NULL,                            /* pStartPage */
 196     MFDRV_StretchBlt,                /* pStretchBlt */
 197     MFDRV_StretchDIBits,             /* pStretchDIBits */
 198     MFDRV_StrokeAndFillPath,         /* pStrokeAndFillPath */
 199     MFDRV_StrokePath,                /* pStrokePath */
 200     NULL,                            /* pSwapBuffers */
 201     NULL,                            /* pUnrealizePalette */
 202     MFDRV_WidenPath                  /* pWidenPath */
 203 };
 204
 205
 206
 207 /**********************************************************************
 208  *           MFDRV_AllocMetaFile
 209  */
 210 static DC *MFDRV_AllocMetaFile(void)
 211 {
 212     DC *dc;
 213     METAFILEDRV_PDEVICE *physDev;
 214
 215     if (!(dc = alloc_dc_ptr( OBJ_METADC ))) return NULL;
 216
 217     physDev = HeapAlloc(GetProcessHeap(),0,sizeof(*physDev));
 218     if (!physDev)
 219     {
 220         free_dc_ptr( dc );
 221         return NULL;
 222     }
 223     if (!(physDev->mh = HeapAlloc( GetProcessHeap(), 0, sizeof(*physDev->mh) )))
 224     {
 225         HeapFree( GetProcessHeap(), 0, physDev );
 226         free_dc_ptr( dc );
 227         return NULL;
 228     }
 229
 230     push_dc_driver( &dc->physDev, &physDev->dev, &MFDRV_Funcs );
 231
 232     physDev->handles = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, HANDLE_LIST_INC * sizeof(physDev->handles[0]));
 233     physDev->handles_size = HANDLE_LIST_INC;
 234     physDev->cur_handles = 0;
 235
 236     physDev->hFile = 0;
 237
 238     physDev->mh->mtHeaderSize   = sizeof(METAHEADER) / sizeof(WORD);
 239     physDev->mh->mtVersion      = 0x0300;
 240     physDev->mh->mtSize         = physDev->mh->mtHeaderSize;
 241     physDev->mh->mtNoObjects    = 0;
 242     physDev->mh->mtMaxRecord    = 0;
 243     physDev->mh->mtNoParameters = 0;
 244
 245     SetVirtualResolution( physDev->dev.hdc, 0, 0, 0, 0);
 246
 247     return dc;
 248 }
 249
 250
 251 /**********************************************************************
 252  *           MFDRV_CreateCompatibleDC
 253  */
 254 static BOOL MFDRV_CreateCompatibleDC( PHYSDEV orig, PHYSDEV *pdev )
 255 {
 256     /* not supported on metafile DCs */
 257     return FALSE;
 258 }
 259
 260
 261 /**********************************************************************
 262  *           MFDRV_DeleteDC
 263  */
 264 static BOOL MFDRV_DeleteDC( PHYSDEV dev )
 265 {
 266     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 267     DWORD index;
 268
 269     HeapFree( GetProcessHeap(), 0, physDev->mh );
 270     for(index = 0; index < physDev->handles_size; index++)
 271         if(physDev->handles[index])
 272             GDI_hdc_not_using_object(physDev->handles[index], dev->hdc);
 273     HeapFree( GetProcessHeap(), 0, physDev->handles );
 274     HeapFree( GetProcessHeap(), 0, physDev );
 275     return TRUE;
 276 }
 277
 278
 279 /**********************************************************************
 280  *           CreateMetaFileW   (GDI32.@)
 281  *
 282  *  Create a new DC and associate it with a metafile. Pass a filename
 283  *  to create a disk-based metafile, NULL to create a memory metafile.
 284  *
 285  * PARAMS
 286  *  filename [I] Filename of disk metafile
 287  *
 288  * RETURNS
 289  *  A handle to the metafile DC if successful, NULL on failure.
 290  */
 291 HDC WINAPI CreateMetaFileW( LPCWSTR filename )
 292 {
 293     HDC ret;
 294     DC *dc;
 295     METAFILEDRV_PDEVICE *physDev;
 296     HANDLE hFile;
 297
 298     TRACE("%s\n", debugstr_w(filename) );
 299
 300     if (!(dc = MFDRV_AllocMetaFile())) return 0;
 301     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 302
 303     if (filename)  /* disk based metafile */
 304     {
 305         physDev->mh->mtType = METAFILE_DISK;
 306         if ((hFile = CreateFileW(filename, GENERIC_WRITE, 0, NULL,
 307                                 CREATE_ALWAYS, 0, 0)) == INVALID_HANDLE_VALUE) {
 308             free_dc_ptr( dc );
 309             return 0;
 310         }
 311         if (!WriteFile( hFile, physDev->mh, sizeof(*physDev->mh), NULL,
 312                         NULL )) {
 313             free_dc_ptr( dc );
 314             return 0;
 315         }
 316         physDev->hFile = hFile;
 317
 318         /* Grow METAHEADER to include filename */
 319         physDev->mh = MF_CreateMetaHeaderDisk(physDev->mh, filename, TRUE);
 320     }
 321     else  /* memory based metafile */
 322         physDev->mh->mtType = METAFILE_MEMORY;
 323
 324     TRACE("returning %p\n", physDev->dev.hdc);
 325     ret = physDev->dev.hdc;
 326     release_dc_ptr( dc );
 327     return ret;
 328 }
 329
 330 /**********************************************************************
 331  *          CreateMetaFileA   (GDI32.@)
 332  *
 333  * See CreateMetaFileW.
 334  */
 335 HDC WINAPI CreateMetaFileA(LPCSTR filename)
 336 {
 337     LPWSTR filenameW;
 338     DWORD len;
 339     HDC hReturnDC;
 340
 341     if (!filename) return CreateMetaFileW(NULL);
 342
 343     len = MultiByteToWideChar( CP_ACP, 0, filename, -1, NULL, 0 );
 344     filenameW = HeapAlloc( GetProcessHeap(), 0, len*sizeof(WCHAR) );
 345     MultiByteToWideChar( CP_ACP, 0, filename, -1, filenameW, len );
 346
 347     hReturnDC = CreateMetaFileW(filenameW);
 348
 349     HeapFree( GetProcessHeap(), 0, filenameW );
 350
 351     return hReturnDC;
 352 }
 353
 354
 355 /**********************************************************************
 356  *          MFDRV_CloseMetaFile
 357  */
 358 static DC *MFDRV_CloseMetaFile( HDC hdc )
 359 {
 360     DC *dc;
 361     METAFILEDRV_PDEVICE *physDev;
 362
 363     TRACE("(%p)\n", hdc );
 364
 365     if (!(dc = get_dc_ptr( hdc ))) return NULL;
 366     if (dc->header.type != OBJ_METADC)
 367     {
 368         release_dc_ptr( dc );
 369         return NULL;
 370     }
 371     if (dc->refcount != 1)
 372     {
 373         FIXME( "not deleting busy DC %p refcount %u\n", hdc, dc->refcount );
 374         release_dc_ptr( dc );
 375         return NULL;
 376     }
 377     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 378
 379     /* Construct the end of metafile record - this is documented
 380      * in SDK Knowledgebase Q99334.
 381      */
 382
 383     if (!MFDRV_MetaParam0(dc->physDev, META_EOF))
 384     {
 385         free_dc_ptr( dc );
 386         return 0;
 387     }
 388
 389     if (physDev->mh->mtType == METAFILE_DISK)  /* disk based metafile */
 390     {
 391         if (SetFilePointer(physDev->hFile, 0, NULL, FILE_BEGIN) != 0) {
 392             free_dc_ptr( dc );
 393             return 0;
 394         }
 395
 396         physDev->mh->mtType = METAFILE_MEMORY; /* This is what windows does */
 397         if (!WriteFile(physDev->hFile, physDev->mh, sizeof(*physDev->mh),
 398                        NULL, NULL)) {
 399             free_dc_ptr( dc );
 400             return 0;
 401         }
 402         CloseHandle(physDev->hFile);
 403         physDev->mh->mtType = METAFILE_DISK;
 404     }
 405
 406     return dc;
 407 }
 408
 409 /******************************************************************
 410  *           CloseMetaFile   (GDI32.@)
 411  *
 412  *  Stop recording graphics operations in metafile associated with
 413  *  hdc and retrieve metafile.
 414  *
 415  * PARAMS
 416  *  hdc [I] Metafile DC to close
 417  *
 418  * RETURNS
 419  *  Handle of newly created metafile on success, NULL on failure.
 420  */
 421 HMETAFILE WINAPI CloseMetaFile(HDC hdc)
 422 {
 423     HMETAFILE hmf;
 424     METAFILEDRV_PDEVICE *physDev;
 425     DC *dc = MFDRV_CloseMetaFile(hdc);
 426     if (!dc) return 0;
 427     physDev = (METAFILEDRV_PDEVICE *)dc->physDev;
 428
 429     /* Now allocate a global handle for the metafile */
 430
 431     hmf = MF_Create_HMETAFILE( physDev->mh );
 432
 433     physDev->mh = NULL;  /* So it won't be deleted */
 434     free_dc_ptr( dc );
 435     return hmf;
 436 }
 437
 438
 439 /******************************************************************
 440  *         MFDRV_WriteRecord
 441  *
 442  * Warning: this function can change the pointer to the metafile header.
 443  */
 444 BOOL MFDRV_WriteRecord( PHYSDEV dev, METARECORD *mr, DWORD rlen)
 445 {
 446     DWORD len, size;
 447     METAHEADER *mh;
 448     METAFILEDRV_PDEVICE *physDev = (METAFILEDRV_PDEVICE *)dev;
 449
 450     switch(physDev->mh->mtType)
 451     {
 452     case METAFILE_MEMORY:
 453         len = physDev->mh->mtSize * 2 + rlen;
 454         /* reallocate memory if needed */
 455         size = HeapSize( GetProcessHeap(), 0, physDev->mh );
 456         if (len > size)
 457         {
 458             /*expand size*/
 459             size += size / 2 + rlen;
 460             mh = HeapReAlloc( GetProcessHeap(), 0, physDev->mh, size);
 461             if (!mh) return FALSE;
 462             physDev->mh = mh;
 463             TRACE("Reallocated metafile: new size is %d\n",size);
 464         }
 465         memcpy((WORD *)physDev->mh + physDev->mh->mtSize, mr, rlen);
 466         break;
 467     case METAFILE_DISK:
 468         TRACE("Writing record to disk\n");
 469         if (!WriteFile(physDev->hFile, mr, rlen, NULL, NULL))
 470             return FALSE;
 471         break;
 472     default:
 473         ERR("Unknown metafile type %d\n", physDev->mh->mtType );
 474         return FALSE;
 475     }
 476
 477     physDev->mh->mtSize += rlen / 2;
 478     physDev->mh->mtMaxRecord = max(physDev->mh->mtMaxRecord, rlen / 2);
 479     return TRUE;
 480 }
 481
 482
 483 /******************************************************************
 484  *         MFDRV_MetaParam0
 485  */
 486
 487 BOOL MFDRV_MetaParam0(PHYSDEV dev, short func)
 488 {
 489     char buffer[8];
 490     METARECORD *mr = (METARECORD *)&buffer;
 491
 492     mr->rdSize = 3;
 493     mr->rdFunction = func;
 494     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 495 }
 496
 497
 498 /******************************************************************
 499  *         MFDRV_MetaParam1
 500  */
 501 BOOL MFDRV_MetaParam1(PHYSDEV dev, short func, short param1)
 502 {
 503     char buffer[8];
 504     METARECORD *mr = (METARECORD *)&buffer;
 505
 506     mr->rdSize = 4;
 507     mr->rdFunction = func;
 508     *(mr->rdParm) = param1;
 509     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 510 }
 511
 512
 513 /******************************************************************
 514  *         MFDRV_MetaParam2
 515  */
 516 BOOL MFDRV_MetaParam2(PHYSDEV dev, short func, short param1, short param2)
 517 {
 518     char buffer[10];
 519     METARECORD *mr = (METARECORD *)&buffer;
 520
 521     mr->rdSize = 5;
 522     mr->rdFunction = func;
 523     *(mr->rdParm) = param2;
 524     *(mr->rdParm + 1) = param1;
 525     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 526 }
 527
 528
 529 /******************************************************************
 530  *         MFDRV_MetaParam4
 531  */
 532
 533 BOOL MFDRV_MetaParam4(PHYSDEV dev, short func, short param1, short param2,
 534                       short param3, short param4)
 535 {
 536     char buffer[14];
 537     METARECORD *mr = (METARECORD *)&buffer;
 538
 539     mr->rdSize = 7;
 540     mr->rdFunction = func;
 541     *(mr->rdParm) = param4;
 542     *(mr->rdParm + 1) = param3;
 543     *(mr->rdParm + 2) = param2;
 544     *(mr->rdParm + 3) = param1;
 545     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 546 }
 547
 548
 549 /******************************************************************
 550  *         MFDRV_MetaParam6
 551  */
 552
 553 BOOL MFDRV_MetaParam6(PHYSDEV dev, short func, short param1, short param2,
 554                       short param3, short param4, short param5, short param6)
 555 {
 556     char buffer[18];
 557     METARECORD *mr = (METARECORD *)&buffer;
 558
 559     mr->rdSize = 9;
 560     mr->rdFunction = func;
 561     *(mr->rdParm) = param6;
 562     *(mr->rdParm + 1) = param5;
 563     *(mr->rdParm + 2) = param4;
 564     *(mr->rdParm + 3) = param3;
 565     *(mr->rdParm + 4) = param2;
 566     *(mr->rdParm + 5) = param1;
 567     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 568 }
 569
 570
 571 /******************************************************************
 572  *         MFDRV_MetaParam8
 573  */
 574 BOOL MFDRV_MetaParam8(PHYSDEV dev, short func, short param1, short param2,
 575                       short param3, short param4, short param5,
 576                       short param6, short param7, short param8)
 577 {
 578     char buffer[22];
 579     METARECORD *mr = (METARECORD *)&buffer;
 580
 581     mr->rdSize = 11;
 582     mr->rdFunction = func;
 583     *(mr->rdParm) = param8;
 584     *(mr->rdParm + 1) = param7;
 585     *(mr->rdParm + 2) = param6;
 586     *(mr->rdParm + 3) = param5;
 587     *(mr->rdParm + 4) = param4;
 588     *(mr->rdParm + 5) = param3;
 589     *(mr->rdParm + 6) = param2;
 590     *(mr->rdParm + 7) = param1;
 591     return MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 592 }