title: How can I calculate the center of an NSButton?
body: <p>I'm not sure how to find the center of my button:</p>
  
  <pre><code>spinner = [[EKActivityIndicatorView alloc] initWithFrame:CGRectMake([followButton bounds].origin.x/2, [followButton bounds].origin.y/2, 16, 16)];
  </code></pre>
  
  <p>Dividing the frame.x and frame.y does not do the trick</p>