MQL5 ReferenceStandard LibraryPanels and DialogsCAppDialogDestroy CreateDestroyOnEventRunChartEventMinimizedIniFileSaveIniFileLoadIniFileNameIniFileExtCreateCommonCreateExpertCreateIndicatorCreateButtonMinMaxOnClickButtonCloseOnClickButtonMinMaxOnAnotherApplicationCloseReboundMinimizeMaximizeCreateInstanceIdProgramNameSubwinOff Destroy CAppDialog control deinitialization method. virtual void Destroy( const int reason=REASON_PROGRAM // reason code ) Parameters reason [in] Deinitialization reason code. REASON_PROGRAM is set by default. Return Value None. Create OnEvent