title: Hit target on UIToolbar with custom-image buttons is not correct
body: <p>I have a UIToolbar that I've customized with my own background image. Consequently, the built-in UIBarButtonItem appearance doesn't work for me, so I'm using images that are already prepared to show in the bar. I create a custom button item with this method:</p>
  
  <pre><code>+ (UIBarButtonItem *)customWithImage:(UIImage *)image enabled:(BOOL)enabled target:(id)target action:(SEL)selector {
  UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
      //I've tried different values for the frame here, but no luck
  button.frame = CGRectMake(0, 0, 44, 44);
  button.enabled = enabled;
  button.showsTouchWhenHighlighted = YES;
  [button addTarget:target action:selector forControlEvents:UIControlEventTouchUpInside];
  [button setImage:image forState:UIControlStateNormal];
  
  UIBarButtonItem *it = [[[UIBarButtonItem alloc] initWithCustomView:button] autorelease];
      //Tried changing this, to no avail
  it.width = 32.f;
  return it;
  </code></pre>
  
  <p>I have one button on the left and one on the right and I'm trying to make it so that if you tap on the far left or far right of the UIToolbar, the corresponding button is tapped. However, with these custom buttons, the hit targets do not extend all the way to the edges of the UIToolbar, but are inset from the sides:</p>
  
  <p><a href="http://skitch.com/andpoul/d1p8g/hit-targets" rel="nofollow noreferrer">http://skitch.com/andpoul/d1p8g/hit-targets</a></p>
  
  <p>Any help greatly appreciated!</p>