MQL5 ReferenceStandard LibraryPanels and DialogsCWndClientOnVScrollHide CreateOnEventColorBackgroundColorBorderBorderTypeVScrolledHScrolledCreateBackCreateScrollVCreateScrollHOnResizeOnVScrollShowOnVScrollHideOnHScrollShowOnHScrollHideOnScrollLineDownOnScrollLineUpOnScrollLineLeftOnScrollLineRightRebound OnVScrollHide The virtual handler of the VScroll (vertical scroll) dependent control "Hide" (vertical scroll bar hide) internal event. virtual bool OnVScrollHide() Return Value true - event processed, otherwise - false. Note The base class method does nothing and always returns true. OnVScrollShow OnHScrollShow