The SelectionTree control uses the SelectionNoItems event to delete obsolete item description text or to disable buttons that have become useless. This event should be authored in the EventMapping table.
This event can only affect controls that are located on the same dialog box as the SelectionTree control.
SelectionTree control if the selection has no nodes.
Action on Subscribers
Deletes obsolete item description text or disables obsolete buttons.
May be used to disable the Next, Reset, and DiskCost buttons on the Selection Dialog when a selection has no nodes and these buttons become useless.