Last Revision:
Version 1.1, 2011-07-26
Rewrote mouse tracking to use NSTrackingArea. Rewrote animation to use Core Animation. Project updated for Xcode 4.
(Full Revision History)
Build Requirements:
Xcode 4, Mac OS X 10.7 Lion.
Runtime Requirements:
Mac OS X 10.7 Lion.

This Cocoa sample shows how to do several different things with windows and Cocoa widgets, by providing a floating "overlay" window interface with a "selection box" that traverses the window.