title: make UIView bigger than its parent view
body: <p>I'm making an iPad app and I have a UIView structure as follows: </p>
  
  <p><br /></p>
  
  <p>ViewA (parent) --> ViewB (subview to ViewA) --> ViewC (subview to ViewB)</p>
  
  <p>ViewA is the same size as the screen.<br />
  ViewB is about half the size of the screen.<br /> 
  ViewC is half the size of ViewB.<br />
  <br /></p>
  
  <p>Upon a certain event, I want to modify ViewC's frame so that ViewC covers the entire screen. What's the best way to do this? I'd rather not have ViewC's frame go outside of ViewB (and I can't change ViewB's frame).</p>
  
  <p>Thanks!</p>
  
  <p>Sunny</p>