def __init__(self):
        vstruct.VStruct.__init__(self)
        self.Size = v_uint16()
        self.HeaderType = v_uint16()
        self.Flags = v_uint16()
        self.EventProperty = v_uint16()
        self.ThreadId = v_uint32()
        self.ProcessId = v_uint32()
        self.TimeStamp = LARGE_INTEGER()
        self.ProviderId = GUID()
        self.EventDescriptor = EVENT_DESCRIPTOR()
        self.KernelTime = v_uint32()
        self.UserTime = v_uint32()
        self.ActivityId = GUID()