title: Can I use DrawRect on a UIImageView loaded from a NIB?
body: <p>I've created a NIB file with some button controls on it, and as a background it has an ImageView which contains a PNG file loaded from my project.</p>
  
  <p>What I want to do is to draw on top of the ImageView - imagine that my UI is a clockface and I want to draw the hands of the clock on top of the background image.</p>
  
  <p>Is it the correct approach to try to subclass the UIImageView and use its DrawRect as when I use the DrawRect of the default view I don't see anything on the screen? </p>
  
  <p>I'm a little lost as I'm finding this particular bit of the documentation hard to follow.
  Thanks.</p>