Adds a button to the left side of each parent item.
| Type | Description | |||
| ExpandButtonEnum | An ExpandButtonEnum expression that indicates whether the left side button of each parent item is visible or hidden. |
The HasButtons property has effect only if the data is displayed as a tree. Use the InsertItem property to insert child items. The user can click the button to expand or collapse the child items as an alternative to double-clicking the parent item. Use ExpandItem property of Items to programmatically expand/collapse items. Use the HasButtonsCaption property to assign custom icons for +/- buttons.