I am deriving a custom control from a list box, in order to add the ability
to edit a list item's text. The easiest way to do it is to simply place a
text box at the appropriate position on the list box, edit in the text box,
then get the value from the text box when it loses focus or the user hits
Enter.

Here's my problem: Adding a text box to a UserControl is easy enough. But
can I add one to a control that is derived from the ListBox control, insteal
of the UserControl base class? Any ideas on how to get this done? Thanks