title: UIButton: Need a circle hit area
body: <p>Ok I have 6 custom UIButtons. Their normal state image are all circles images.
  They are all spaced out equally but all the circles touch each other.</p>
  
  <p>The problem with the custom UIbutton (which has a circle image on it), is that the hit area of that button is square, and the corners of this square overlaps the hitarea of the other custom button's hitarea.</p>
  
  <p>How do i make the hit area of a UIbutton whos normal state has a circle image, be only clickable on that circle only, rather than the normal square hit area?!</p>
  
  <p>I hope that someone can find a way for me to solve this problem that i currently am having!</p>
  
  <p>Thanks in advance</p>
  
  <p>Pavan</p>