Dev:UICalloutView



UICalloutView is a "callout" view which looks like a dialog box. It was used in MobileMaps.app.

UICalloutView delegate
One could assign a delegate to a UICalloutView. The delegate must conform to the informal protocol:

Reference

 * Header: http://github.com/kennytm/iphone-private-frameworks/blob/master/UIKit/UICalloutView.h
 * The iPhone Developer's Cookbook by Erica Sadun, Chapter 8, Recipe: Adding Callout Views. ISBN 978-0321555458.