title: Avoid/skip deleting shape in visio
body: <p>I want skip deleting a shape if it overlaps with other shape.</p>
  
  <p>so any idea in which event i should do this? </p>
  
  <p>i tried to do that using,</p>
  
  <p>QueryCancelSelectionDelete(ByVal Selection As IVSelection) but i can't detect which shape is being deleted</p>