97 lines
1.6 KiB
C
97 lines
1.6 KiB
C
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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escape.c
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Abstract:
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Implementation of escape related DDI entry points:
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DrvEscape
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Environment:
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Fax driver, kernel mode
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Revision History:
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01/09/96 -davidx-
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Created it.
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mm/dd/yy -author-
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description
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--*/
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#include "faxdrv.h"
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ULONG
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DrvEscape(
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SURFOBJ *pso,
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ULONG iEsc,
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ULONG cjIn,
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PVOID pvIn,
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ULONG cjOut,
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PVOID pvOut
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)
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/*++
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Routine Description:
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Implementation of DDI entry point DrvEscape.
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Please refer to DDK documentation for more details.
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Arguments:
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pso - Describes the surface the call is directed to
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iEsc - Specifies a query
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cjIn - Specifies the size in bytes of the buffer pointed to by pvIn
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pvIn - Points to input data buffer
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cjOut - Specifies the size in bytes of the buffer pointed to by pvOut
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pvOut - Points to the output buffer
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Return Value:
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Depends on the query specified by iEsc parameter
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--*/
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{
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Verbose(("Entering DrvEscape...\n"));
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switch (iEsc) {
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case QUERYESCSUPPORT:
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//
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// Query which escapes are supported: The only escape we support
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// is QUERYESCSUPPORT itself.
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//
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if (cjIn != sizeof(ULONG) || !pvIn) {
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Error(("Invalid input paramaters\n"));
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SetLastError(ERROR_INVALID_PARAMETER);
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return DDI_ERROR;
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}
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if (*((PULONG) pvIn) == QUERYESCSUPPORT)
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return TRUE;
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break;
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default:
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Verbose(("Unsupported iEsc: %d\n", iEsc));
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break;
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}
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return FALSE;
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}
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