 associated with the PopupMenu object and the two sub menus are
added.</p><p>When the <i>ContextMenu</i> event fires, the control checks the Key passed in to determine whether
	the menu is to be shown for a text box or a list box.  In either case, the enabled state of the menu items
	is set depending on the state of the control.  Note you could also add or remove items to the menu here.
	Finally, clicking in context menus are received through the PopupMenu's standard <i>Click</i> method.</p><p>The sample al