MMRESULT OpenKernelDevice	(	DeviceType	device_type,
		UINT	device_id,
		DWORD	access,
		HANDLE *	handle
	)

Definition at line 79 of file kernel.c.

Referenced by GetDeviceCapabilities(), GetDeviceCount(), and OpenDevice().

{
    MMRESULT result;
    WCHAR device_name[MAX_DEVICE_NAME_LENGTH];
    DWORD open_flags = 0;

    ASSERT(handle);

    /* Glue the base device name and the ID together */

    result = CobbleDeviceName(device_type, device_id, device_name);

    DPRINT("Opening kernel device %ls\n", device_name);

    if ( result != MMSYSERR_NOERROR )
        return result;

    /* We want overlapped I/O when writing */

    if ( access != GENERIC_READ )
        open_flags = FILE_FLAG_OVERLAPPED;

    /* Now try opening... */

    *handle = CreateFile(device_name,
                         access,
                         FILE_SHARE_WRITE,
                         NULL,
                         OPEN_EXISTING,
                         open_flags,
                         NULL);

    if ( *handle == INVALID_HANDLE_VALUE )
        return ErrorToMmResult(GetLastError());

    return MMSYSERR_NOERROR;
}

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