MQL5 ReferenceStandard LibraryPanels and DialogsCListViewOnScrollLineUp CreateOnEventTotalViewAddItemSelectSelectByTextSelectByValueValueCreateRowOnResizeOnVScrollShowOnVScrollHideOnScrollLineDownOnScrollLineUpOnItemClickRedrawRowStateCheckView OnScrollLineUp The virtual handler of the VScroll (vertical scroll) dependent control "ScrollLineUp" (vertical scroll line up) internal event. virtual bool OnScrollLineUp() Return Value true - event processed, otherwise - false. OnScrollLineDown OnItemClick