public void CTP_RegMD()
{
MdApi.CTP_RegOnRtnDepthMarketData_Tick(OnRtnDepthMarketData_Tick_2);
MdApi.CTP_RegOnRtnDepthMarketData_KLine(OnRtnDepthMarketData_KLine_2);
MdApi.CTP_RegOnHistory_Tick(OnHistoryTick_2);
MdApi.CTP_RegOnHistory_KLine(OnHistoryKLine_2);
MdApi.CTP_RegMDOnConnect(OnConnect_2);
MdApi.CTP_RegMDOnDisconnect(OnDisconnect_2);
MdApi.CTP_RegMDOnRspError(OnRspError_2);
}