UAE/GPFs whenever a form containing the control is closed.</p><p>The object model coded in this control demonstrates one technique you can use to <i>completely guarantee</i> 
no possibility of a circular reference. The downside to the technique is that it requires more code 
to be run before an object is provided to the user. That isn't a problem in a control which is 
managing only a small number of objects, such as the Outlook bar (i.e. less than 1,000). But it 
would be unsuitable for use in a control li