def __init__(self):
        vstruct.VStruct.__init__(self)
        self.EventHeader = EVENT_HEADER()
        self.BufferContext = ETW_BUFFER_CONTEXT()
        self.ExtendedDataCount = v_uint16()
        self.UserDataLength = v_uint16()
        self.ExtendedData = v_ptr32()
        self.UserData = v_ptr32()
        self.UserContext = v_ptr32()
        self._pad0068 = v_bytes(size=4)