61 lines
2 KiB
C
61 lines
2 KiB
C
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/******************************Module*Header*******************************\
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* Module Name: escape.c
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*
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* Escape handler for MCD drivers and other escapes.
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*
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* Copyright (c) 1996 Microsoft Corporation
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\**************************************************************************/
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#include "precomp.h"
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//****************************************************************************
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// ULONG DrvEscape(SURFOBJ *, ULONG, ULONG, VOID *, ULONG cjOut, VOID *pvOut)
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//
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// Driver escape entry point. This function should return TRUE for any
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// supported escapes in response to QUERYESCSUPPORT, and FALSE for any
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// others. All supported escapes are called from this routine.
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//****************************************************************************
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BOOL MCDrvGetEntryPoints(MCDSURFACE *pMCDSurface, MCDDRIVER *pMCDDriver);
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ULONG DrvEscape(SURFOBJ *pso, ULONG iEsc,
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ULONG cjIn, VOID *pvIn,
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ULONG cjOut, VOID *pvOut)
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{
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ULONG retVal;
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PDEV *ppdev;
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if (iEsc == MCDFUNCS) {
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ppdev = (PDEV *)pso->dhpdev;
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if (!ppdev->hMCD) {
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WCHAR uDllName[50];
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UCHAR dllName[50];
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ULONG nameSize;
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EngMultiByteToUnicodeN(uDllName, sizeof(uDllName), &nameSize,
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MCDENGDLLNAME, sizeof(MCDENGDLLNAME));
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if (ppdev->hMCD = EngLoadImage(uDllName)) {
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MCDENGINITFUNC pMCDEngInit = EngFindImageProcAddress(ppdev->hMCD,
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(LPSTR)MCDENGINITFUNCNAME);
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if (pMCDEngInit) {
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(*pMCDEngInit)(pso, MCDrvGetEntryPoints);
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ppdev->pMCDFilterFunc = EngFindImageProcAddress(ppdev->hMCD,
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(LPSTR)MCDENGESCFILTERNAME);
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}
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}
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}
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if (ppdev->pMCDFilterFunc) {
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if ((*ppdev->pMCDFilterFunc)(pso, iEsc, cjIn, pvIn,
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cjOut, pvOut, &retVal))
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return retVal;
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}
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}
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return (ULONG)FALSE;
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}
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