MQL5参考标准程序库交易类CAccountInfoTradeAllowed LoginTradeModeTradeModeDescriptionLeverageStopoutModeStopoutModeDescriptionMarginModeMarginModeDescriptionTradeAllowedTradeExpertLimitOrdersBalanceCreditProfitEquityMarginFreeMarginMarginLevelMarginCallMarginStopOutNameServerCurrencyCompanyInfoIntegerInfoDoubleInfoStringOrderProfitCheckMarginCheckFreeMarginCheckMaxLotCheck TradeAllowed 获取交易许可标志。 bool TradeAllowed() const 返回值 交易许可标志。 MarginModeDescription TradeExpert