成员的完整列表，这些成员属于 CThostFtdcCombActionField,包括所有继承而来的类成员

ActionLocalID	CThostFtdcCombActionField
ActionStatus	CThostFtdcCombActionField
BrokerID	CThostFtdcCombActionField
ClientID	CThostFtdcCombActionField
CombActionRef	CThostFtdcCombActionField
CombDirection	CThostFtdcCombActionField
Direction	CThostFtdcCombActionField
ExchangeID	CThostFtdcCombActionField
ExchangeInstID	CThostFtdcCombActionField
FrontID	CThostFtdcCombActionField
HedgeFlag	CThostFtdcCombActionField
InstallID	CThostFtdcCombActionField
InstrumentID	CThostFtdcCombActionField
InvestorID	CThostFtdcCombActionField
IPAddress	CThostFtdcCombActionField
MacAddress	CThostFtdcCombActionField
NotifySequence	CThostFtdcCombActionField
ParticipantID	CThostFtdcCombActionField
SequenceNo	CThostFtdcCombActionField
SessionID	CThostFtdcCombActionField
SettlementID	CThostFtdcCombActionField
StatusMsg	CThostFtdcCombActionField
TraderID	CThostFtdcCombActionField
TradingDay	CThostFtdcCombActionField
UserID	CThostFtdcCombActionField
UserProductInfo	CThostFtdcCombActionField
Volume	CThostFtdcCombActionField