MQL5 ReferenceStandard LibraryStrategy ModulesBase classes for Expert AdvisorsCExpertMoneyCheckOpenLong PercentValidationSettingsCheckOpenLongCheckOpenShortCheckReverseCheckClose CheckOpenLong Gets the volume for a long position. virtual double CheckOpenLong( double price, // price double sl // Stop Loss ) Parameters price [in] Opening price of a long position. sl [in] Stop Loss price of a long position. Return Value Trade volume for a long position. ValidationSettings CheckOpenShort