Use the SelectItem property to select items. The SelectItem event is fired when an item is selected, or unselected. Use the Count property to count items in the group. Use the Item property to access an item giving its index or by its caption. Use the ItemByPos property to get the item giving its position. Use the ItemHeight property to specify the height for all items in the group. Use the Caption property to specify the caption of the item. Use the Visible property to specify whether an item is visible or hidden.