 on an item that doesn't really
 have any sort of selection state.
</p><p>
Although Office integrates the highlighting functionality into the drawing of the
selection, I wanted to create a the same effect in a reusable form, hence a
control. 
</p><h2>Implementing a Pane Selector</h2><p>
If this is to implemented as control, you need to provide a control that is 
transparent except for the border and the button, so the underlying control
can be seen through and selected if desired.  In theory this is possibl