Cocoa Touch - Custom UIButton shape

Question

How can I make the touchable button area to be of the same shape of the image provided?
Say I have a custom button with a triangle image, how can I make sure that only t

Answer 1

This feature is definitely not provided by the core cocoa touch classes related to a UIButton. I would guess you would have to look into subclassing UIButton and intercepting the taps as you mentioned.