MQL5 ReferenceStandard LibraryPanels and DialogsCWndClientOnResize CreateOnEventColorBackgroundColorBorderBorderTypeVScrolledHScrolledCreateBackCreateScrollVCreateScrollHOnResizeOnVScrollShowOnVScrollHideOnHScrollShowOnHScrollHideOnScrollLineDownOnScrollLineUpOnScrollLineLeftOnScrollLineRightRebound OnResize The virtual handler of the control "Resize" internal event. virtual bool OnResize() Return Value true - event processed, otherwise - false. CreateScrollH OnVScrollShow