title: How do I make Touch-Up-Inside only fire on actual touch-up-inside in the correct control?
body: <p>I have a matrix of 3X3 UIbuttons, and I want to allow the user to drag his finger and fire the correct event based on where the finger <em>leaves</em> the touch panel.</p>
  
  <p>Currently, the touch-up-inside will only fire for a button if the finger touched down in that button.</p>
  
  <p>What is the easiest way to get the desired behavior?</p>