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Event Architecture

The path taken by an event to the object in a Cocoa application that finally handles it can be a complicated one. This chapter traces the possible paths of events of various types and describes the mechanisms and architectural designs for handling events in the Application Kit.

For further background, “The Core Application Architecture“ in Cocoa Fundamentals Guide is recommended reading.

Contents:

How an Event Enters a Cocoa Application
Event Dispatch
Action Messages
Responders
The Responder Chain

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