Last Revision:
Version 1.1, 2011-07-26
Rewrote code for drag source with the new APIs. Cleaned up source code formatting. Updated project for Xcode 4.
(Full Revision History)
Build Requirements:
Xcode 4.1, Mac OS X 10.7 Lion or later.
Runtime Requirements:
Mac OS X 10.7 Lion or later.

CocoaDragAndDrop is a sample that demonstrates how to implement drag and drop functionality in Cocoa using images (but this method can easily be extended to deal with other types of data).