By default, the ShowAsDisabled property is False. Use the ShowAsDisabled property to shows the current item as disabled. The Enabled property specifies whether the item is enabled or disabled. The ShowAsDisabled property does not  change the Enabled property, the item acts like an enabled item. For instance, you can not highlight a disabled item, instead you can highlight an item that looks as disabled. A disabled item ( Enabled property is False) shows as grayed, and it is un-selectable, so the user can select or highlight it. An item ( Enabled property is True, ShowAsDisabled property is True ), shows as grayed, but it is selectable, so the user can select or highlight it.