public static extern int TdReqQrySecurityClass(IntPtr pApi, ThostFtdcQrySecurityClassField pQrySecurityClass, int nRequestID);
/// <summary> ///请求查询证券类别 /// </summary> public int ReqQrySecurityClass(ThostFtdcQrySecurityClassField pQrySecurityClass, int nRequestID) { return(Interop.TdReqQrySecurityClass(Handle, pQrySecurityClass, nRequestID)); }