| Type | Description | ||
| Boolean | A boolean expression that indicates whether the control uses the SelBackColorGroup and SelForeColorGroup properties to mark the selected group's caption. |
By default, the MarkSelectGroup property is False. If the MarkSelectGroup property is True, the control uses the SelBackColorGroup and SelForeColorGroup properties to display the selected group. Use the BackColor property to specify the group's background color. Use the BackColorList property to specify the background color for group's list. Use the BackColorGroup property to specify a default background color for groups.