MQL5 ReferenceStandard LibraryPanels and DialogsCButtonOnHide CreatePressedLockingOnSetTextOnSetColorOnSetColorBackgroundOnSetColorBorderOnSetFontOnSetFontSizeOnCreateOnShowOnHideOnMoveOnResizeOnMouseDownOnMouseUp OnHide The virtual handler of control "Hide" internal event. virtual bool OnHide() Return Value true - event processed, otherwise - false. OnShow OnMove