September 2002
Intermediate to advanced
1272 pages
31h 12m
English
Content preview from Cocoa® Programming
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Combo Boxes
Combo boxes are a cross between a text field and a pop-up button. A combo box contains an editable text field cell and a button to the right of the text field cell. The button cell has a down pointing arrow, similar to a pull-down list. Clicking the button opens a list of items from which the user can choose a value. Combo boxes also support autocompletion as an option.
Cocoa uses the NSComboBox and NSComboBoxCell classes to implement combo boxes. These classes inherit from NSTextField and NSTextFieldCell, respectively. All the text field manipulations described in Chapter 10 apply to the text field portion of the combo box.
Because a combo box has a pull-down list from which a user can choose, it acts much like a pop-up button, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.