iphone interface overlay pass-through events

[dhomes]

Hi All,




I'm fairly new to iphone dev (<3 months on my free time) and I'm starting development of my second app.

From the image, I'm adding a number of UIViews as subviews to my main UIViewController.view, the number of Views to add varies based on user selectable data.

Each view contains several controls, a label, a UITextField and a Horizontal UIViewPicker.

For simplicity I put a (VERY ROUGH) mock-up here with only two buttons.

Because I want to improve the GUI, I want to overlay an UIViewImage as the top sub-views of the added UIView, something like in the image.

The question is on passing through the events to the objects below it. I've read somewhere that one way was to use clipping, but the actual shape is more complex than just an oval frame.

Somewhere else I read that one could add four UIImages, one at each border, which would let the events pass through this hole. Seems like a dirty solution to me (Although I'm sure it would work)

Any ideas about the best way to do this? Any links to a tutorial or recipe online?

Your help is appreciated

thanks david