The Item property can be used to access a Group object
giving its identifier. Use the Add method of the
Groups collection to add new groups to the control. The ItemByPos/Count
properties can be used to enumerate the Groups as they are displayed. The Visible
property specifies whether a Group is visible or hidden. The ItemByPos
property gives the Group by position, no matter if it is visible or
hidden. The ItemByIndex/Count
properties can be used to enumerate the Groups as they has been added. The Count
property counts the number of Group objects in the Groups collection.