MQL5 リファレンス標準ライブラリトレードクラスCAccountInfoTradeExpert LoginTradeModeTradeModeDescriptionLeverageStopoutModeStopoutModeDescriptionMarginModeMarginModeDescriptionTradeAllowedTradeExpertLimitOrdersBalanceCreditProfitEquityMarginFreeMarginMarginLevelMarginCallMarginStopOutNameServerCurrencyCompanyInfoIntegerInfoDoubleInfoStringOrderProfitCheckMarginCheckFreeMarginCheckMaxLotCheck TradeExpert 자동 거래 허용량의 플래그 가져오기. bool TradeExpert() const 값 반환 자동 거래 허용량 플래그. TradeAllowed LimitOrders