private void Send(SPOrderItem item)
        {
            if (item == null)
            {
                return;
            }

            SingleOrder order  = item.Leg[0].Order;
            SingleOrder order2 = item.Leg[1].Order;

            string symbol = item.GetSymbol();
            double price  = order.Price - order2.Price;
            int    qty    = (int)order.OrderQty;

            // 是否要做价格调整?
            byte[] bytes            = { (byte)CTPAPI.ToCTP(item.Leg[0].OpenClose), (byte)CTPAPI.ToCTP(item.Leg[1].OpenClose) };
            string szCombOffsetFlag = System.Text.Encoding.Default.GetString(bytes, 0, bytes.Length);

            byte[] bytes2          = { (byte)HedgeFlagType, (byte)HedgeFlagType };
            string szCombHedgeFlag = System.Text.Encoding.Default.GetString(bytes2, 0, bytes2.Length);

            TThostFtdcDirectionType           Direction           = order.Side == Side.Buy ? TThostFtdcDirectionType.Buy : TThostFtdcDirectionType.Sell;
            TThostFtdcOrderPriceTypeType      OrderPriceType      = TThostFtdcOrderPriceTypeType.LimitPrice;
            TThostFtdcTimeConditionType       TimeCondition       = TThostFtdcTimeConditionType.GFD;
            TThostFtdcContingentConditionType ContingentCondition = TThostFtdcContingentConditionType.Immediately;
            TThostFtdcVolumeConditionType     VolumeCondition     = TThostFtdcVolumeConditionType.AV;

            int nRet = 0;

#if CTP
            nRet = TraderApi.TD_SendOrder(m_pTdApi,
                                          -1,
                                          symbol,
                                          Direction,
                                          szCombOffsetFlag,
                                          szCombHedgeFlag,
                                          qty,
                                          price,
                                          OrderPriceType,
                                          TimeCondition,
                                          ContingentCondition,
                                          0,
                                          VolumeCondition);
#endif
            if (nRet > 0)
            {
                orderMap.CreateNewOrder(string.Format("{0}:{1}:{2}", _RspUserLogin.FrontID, _RspUserLogin.SessionID, nRet), item);
            }
        }