def __init__(self):
        vstruct.VStruct.__init__(self)
        self.Mask = v_uint64()
        self.Length = v_uint32()
        self.Reserved1 = v_uint32()
        self.Area = v_ptr32()
        self.Reserved2 = v_uint32()
        self.Buffer = v_ptr32()
        self.Reserved3 = v_uint32()