ACM_IOControl

Device IO control routine

Syntax

BOOL ACM_IOControl(DWORD dwOpenData, DWORD dwCode,
PBYTE pBufIn, DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActualOut)

Parameters

dwOpenData: Value returned from ACM_Open call
dwCode: IO control code for the function to be performed. ACM_IOControl only supports one IOCTL value (IOCTL_ACM_MESSAGE)
pBufIn: Pointer to the input parameter structure (ACMDRV_MESSAGE_PARAMS).
dwLenIn: Size in bytes of input parameter structure (sizeof(ACMDRV_MESSAGE_PARAMS)).
pBufOut: Pointer to the return value (DWORD).
dwLenOut: Size of the return value variable (sizeof(DWORD)).
pdwActualOut: Unused

Return Value

Returns TRUE for success, FALSE for failure

ACM_IOControl

Syntax

Parameters

Return Value

See Also