title: Correct way in Flex to make a transparent panel respond to rollOver() events
body: <p>I have a Canvas in a Flex application which has items inside it that cover only about 50% of the area of the main canvas.</p>
  
  <p>i want the canvas to respond to <code>rollOver</code> events for the full area, and not just the area that is covered by the items inside.</p>
  
  <p>I have been setting the following attributes to achieve this :</p>
  
  <pre><code>&lt;mx:Canvas backgroundColor="white"
  backgroundAlpha=".01"
  rollOver="rollOver(event)"&gt;...
  </code></pre>
  
  <p>This causes the entire canvas to respond to rollOver events. It works great - I'm just not happy with it and figure there must be a better way to achieve it. </p>
  
  <p>Is there a way to force mouse events to act on the entire area of a UIComponent?</p>