Building Cocoa Applications: A Step by Step Guide

Summary

We did several really neat things in this chapter. We worked with three systems that Cocoa uses for interapplication communication: the cut, copy, and paste system; the Services system; and the drag-and-drop system. Using these features, you can greatly increase the power and usefulness of your applications by making their features available to other Cocoa programs. In the next chapter, the last one in the book, we’ll learn about the Preferences system.