def __init__(self):
        vstruct.VStruct.__init__(self)
        self.DriverObject = v_ptr32()
        self.AddDevice = v_ptr32()
        self.Count = v_uint32()
        self.ServiceKeyName = UNICODE_STRING()
        self.ClientDriverExtension = v_ptr32()
        self.FsFilterCallbacks = v_ptr32()
        self.KseCallbacks = v_ptr32()
        self.DvCallbacks = v_ptr32()
        self.VerifierContext = v_ptr32()