title: Checking the visibility of a ContextMenu when associated with a NotifyIcon
body: <p>According to <a href="https://stackoverflow.com/revisions/4680819/2">this answer</a> on another question, the <code>Collapsed</code> event of a ContextMenu is only raised if it's associated to a control before calling <code>Show()</code>.</p>
  
  <p>SInce a <code>NotifyIcon</code> does not count as a control, I can't hook onto the <code>Collapsed</code> event to detect when the menu associated to one is hidden.</p>
  
  <p>Are there any workarounds?</p>