def __init__(self):
        vstruct.VStruct.__init__(self)
        self.Type = v_uint16()
        self.Size = v_uint16()
        self.DeviceObject = v_ptr32()
        self.PowerFlags = v_uint32()
        self.Dope = v_ptr32()
        self.ExtensionFlags = v_uint32()
        self.DeviceNode = v_ptr32()
        self.AttachedTo = v_ptr32()
        self.StartIoCount = v_uint32()
        self.StartIoKey = v_uint32()
        self.StartIoFlags = v_uint32()
        self.Vpb = v_ptr32()
        self.DependencyNode = v_ptr32()
        self.VerifierContext = v_ptr32()