title: Where to place drawRect?
body: <p>I am just starting to learn drawing procedures for the IPhone, but something confuses me.  If I start a new view-based application, and establish a new view class, associate that with the view that came with the application, then drawRect, placed in that new view class, seems to work.  </p>
  
  <p>But why can't I just establish my drawing routines directly in the view controller for the view:  I've tried it, and drawRect just doesn't get invoked when I use setNeedsDisplay.</p>
  
  <p>Thanks in advance for any help.</p>
  
  <p>John Doner</p>