September 2002
Intermediate to advanced
1272 pages
31h 12m
English
Content preview from Cocoa® Programming
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Controls
All Cocoa controls are subclasses of the NSControl class, which is in turn a subclass of NSView. The NSControl class is an abstract class and should not be instantiated. Understanding it is necessary to effectively use its subclasses, however.
The NSControl class performs three key functions. It must be able to draw the user interface element that it represents. The machinery to support this task is inherited from NSView. It also needs to be able to respond to user input, in particular from the mouse and keyboard. This capability is inherited from the NSResponder class. Finally, a control needs to be able to send arbitrary action messages to arbitrary targets. This capability is added in the NSControl class itself.
NSControl Class ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.