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

BrokerID	CThostFtdcReqUserLoginField
ClientIPAddress	CThostFtdcReqUserLoginField
InterfaceProductInfo	CThostFtdcReqUserLoginField
LoginRemark	CThostFtdcReqUserLoginField
MacAddress	CThostFtdcReqUserLoginField
OneTimePassword	CThostFtdcReqUserLoginField
Password	CThostFtdcReqUserLoginField
ProtocolInfo	CThostFtdcReqUserLoginField
TradingDay	CThostFtdcReqUserLoginField
UserID	CThostFtdcReqUserLoginField
UserProductInfo	CThostFtdcReqUserLoginField