///退订合约的相关信息
public virtual void OnRspUnSubMarketData(ref CUstpFtdcSpecificInstrumentField pSpecificInstrument, ref CUstpFtdcRspInfoField pRspInfo, int nRequestID, bool bIsLast)
{
}
///用户退出应答
public virtual void OnRspUserLogout(ref CUstpFtdcRspUserLogoutField pRspUserLogout, ref CUstpFtdcRspInfoField pRspInfo, int nRequestID, bool bIsLast)
{
}
///主题查询应答
public virtual void OnRspQryTopic(ref CUstpFtdcDisseminationField pDissemination, ref CUstpFtdcRspInfoField pRspInfo, int nRequestID, bool bIsLast)
{
}
///错误应答
public virtual void OnRspError(ref CUstpFtdcRspInfoField pRspInfo, int nRequestID, bool bIsLast)
{
}
