MQL5 ReferenceStandard LibraryPanels and DialogsCBmpButtonOnCreate CreateBorderBmpNamesBmpOffNameBmpOnNameBmpPassiveNameBmpActiveNamePressedLockingOnSetZOrderOnCreateOnShowOnHideOnMoveOnChangeOnActivateOnDeactivateOnMouseDownOnMouseUp OnCreate The virtual handler of control "Create" internal event. virtual bool OnCreate() Return Value true - event processed, otherwise - false. OnSetZOrder OnShow