|Long||A long expression that indicates the index of the focused column.|
Use the FocusColumnIndex property to determine the focused column. Use the FocusItem property to determine the focused item. Use the TreeColumnIndex property to set the column that displays the hierarchy. Use the SearchColumnIndex property to set the index of the searching column. The SelectColumnInner property indicates the index of an inner cell that has the focus.
The control fires the FocusChanged event when the user changes: