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

BankBranchID	CThostFtdcFutureSignIOField
BankID	CThostFtdcFutureSignIOField
BankSerial	CThostFtdcFutureSignIOField
BrokerBranchID	CThostFtdcFutureSignIOField
BrokerID	CThostFtdcFutureSignIOField
BrokerIDByBank	CThostFtdcFutureSignIOField
CurrencyID	CThostFtdcFutureSignIOField
DeviceID	CThostFtdcFutureSignIOField
Digest	CThostFtdcFutureSignIOField
InstallID	CThostFtdcFutureSignIOField
LastFragment	CThostFtdcFutureSignIOField
OperNo	CThostFtdcFutureSignIOField
PlateSerial	CThostFtdcFutureSignIOField
RequestID	CThostFtdcFutureSignIOField
SessionID	CThostFtdcFutureSignIOField
TID	CThostFtdcFutureSignIOField
TradeCode	CThostFtdcFutureSignIOField
TradeDate	CThostFtdcFutureSignIOField
TradeTime	CThostFtdcFutureSignIOField
TradingDay	CThostFtdcFutureSignIOField
UserID	CThostFtdcFutureSignIOField