我在测试撤单时，收到下面的回应。 [OrderSubmitStatus][0][51] [OrderStatus][0][53] [StatusMsg][0][已撤单] OrderStatus[53] 对应的是THOST_FTDC_OSS_CancelRejected '5'; //撤单已经被拒绝 吗？ StatusMsg是已撤单。 请问我如何判断订单已经被撤单了？OrderSubmitStatus 和 OrderStatus是什么意思，能否解释下？ FIELD [CFTDOrderField] START [BrokerID][0][2030] [InvestorID][0][351593] [InstrumentID][0][cu1005] [OrderRef][0][2] [UserID][0][351593] [OrderPriceType][0][50] [Direction][0][48] [CombOffsetFlag][0][0] [CombHedgeFlag][0][1] [LimitPrice][4][55000.000000] [VolumeTotalOriginal][2][1] [TimeCondition][0][51] [GTDDate][0][] [VolumeCondition][0][49] [MinVolume][2][1] [ContingentCondition][0][49] [StopPrice][4][0.000000] [ForceCloseReason][0][48] [IsAutoSuspend][2][1] [BusinessUnit][0][0157c2c] [RequestID][2][0] [OrderLocalID][0][ 28] [ExchangeID][0][SHFE] [ParticipantID][0][0157] [ClientID][0][35159300] [ExchangeInstID][0][cu1005] [TraderID][0][0157c2c] [InstallID][2][1] [OrderSubmitStatus][0][51] [NotifySequence][2][1] [TradingDay][0][20100222] [SettlementID][2][1] [OrderSysID][0][ 720884] [OrderSource][0][0] [OrderStatus][0][53] [OrderType][0][0] [VolumeTraded][2][0] [VolumeTotal][2][1] [InsertDate][0][20100222] [InsertTime][0][15:55:49] [ActiveTime][0][] [SuspendTime][0][] [UpdateTime][0][] [CancelTime][0][] [ActiveTraderID][0][0157c2c] [ClearingPartID][0][] [SequenceNo][2][49] [FrontID][2][1] [SessionID][2][1524171016] [UserProductInfo][0][] [StatusMsg][0][已撤单] [UserForceClose][2][0] [ActiveUserID][0][351593] [BrokerOrderSeq][2][26] FIELD [CFTDOrderField] END