title: Label on UIButton of type UIButtonTypeCustom is not displaying
body: <p>I want to add a borderless UIButton to my view. Using the interface builder, I do this by dragging a Round Rect Button from the object library. Then, on the attributes inspector, change the Type to Custom and leave the title to "Button." Everything is okay with the interface builder. But, this is not the case with the programmatic approach. Programmatically, this is how I do it:</p>
  
  <pre><code>UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
  [button setFrame:CGRectMake(x, y, width, height)];
  [button setTitle:@"Button" forState:UIControlStateNormal];
  </code></pre>
  
  <p>When I run the app, the button is not displayed. Maybe I'm missing something here but when I change the type to <code>UIButtonTypeRoundRect</code> the button is displayed. But, again, I want the button to be borderless.</p>
  
  <p>Anyway, I can always use the interface builder. However, I want to understand why the programmatic approach doesn't work. So, does anyone know what the problem is?</p>