title: UIImageView with stretchableImageWithLeftCapWidth doesn't stretch image
body: <p>I'm trying to stretch an Image in a UIImageView - but I fail miserably :)</p>
  
  <p>Following setup:</p>
  
  <p>NIB-File with a view and a UIImageView attached to this view.</p>
  
  <p>Wired to my class using <code>IBOutlet UIImageView *background</code>.</p>
  
  <p>Now, in my class I try the following:</p>
  
  <pre><code>UIImage *bgImage = [[UIImage imageNamed:@"myImage.png"] stretchableImageWithLeftCapWidth:0 topCapHeight:50];
  [background setImage: bgImage];
  
  bgFrame = CGRectMake(0, 0, 250, 200);
  background.frame = bgFrame;
  </code></pre>
  
  <p>which should stretch the image vertically - at least, that's what I thought. Alas, it's not working... :(</p>
  
  <p>The image I'm using has a height of 115px (which should be enough for the stretch, I guess?)</p>