ACM_Open

The function ACM_Open opens the device.

Syntax

PVOID ACM_Open( DWORD dwData, DWORD dwAccess,
DWORD dwShareMode );

Return Value

Returns a DWORD which will be passed to Read, Write, etc., or if unable to open device returns NULL.

Parameters

dwData

Value returned from ACM_Init call (ignored).

dwAccess

Requested access (combination of GENERIC_READ and GENERIC_WRITE) (ignored).

dwShareMode

Requested share mode (combination of FILE_SHARE_READ and FILE_SHARE_WRITE) (ignored).