MQL5 ReferenceStandard LibraryPanels and DialogsCAppDialogIniFileExt CreateDestroyOnEventRunChartEventMinimizedIniFileSaveIniFileLoadIniFileNameIniFileExtCreateCommonCreateExpertCreateIndicatorCreateButtonMinMaxOnClickButtonCloseOnClickButtonMinMaxOnAnotherApplicationCloseReboundMinimizeMaximizeCreateInstanceIdProgramNameSubwinOff IniFileExt Sets the file extension for loading/saving the control state. virtual string IniFileExt() const Return Value File extension used for loading/saving of the control state. IniFileName CreateCommon