title: How to draw a dotted rectangle marquee on iphone?
body: <p>How to draw rectangle something like this in iphone sdk using core graphics</p>
  
  <p><a href="https://i.stack.imgur.com/Ik5Fa.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ik5Fa.jpg" alt="Screen Shot of the Crop Tool"></a>
  </p>