May 2002
Intermediate to advanced
646 pages
18h 57m
English
Content preview from Building Cocoa Applications: A Step by Step GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Exercises
Change the color of the BlackView instance to the one with RGB values (0.5, 0.0, 0.5). Start by launching PB and searching for
blackColorin the Find pane. After that, use a function other thanNSRectFill( )to display something in the view.Revise the BarView instance so that the bar goes up and down instead of right and left. Change the vertical slider attributes so that the bar can only have an integral height in the range 0 to 10.
Take care of the PolygonView example problem that occurs when the window is resized very small by setting a minimum size for the window.
Figure out why the PolygonView doesn’t always erase the old polygon that is drawn in the NSScrollView when it is made smaller. Fix the error. (Hint: The bug is closely related to the fact that the error manifests itself only when the PolygonView is being made smaller.)
Insert text labels for the two sliders in the PolygonView example and make sure that the text behaves appropriately (no resize, attached to sliders). Then change the horizontal slider to a vertical one and make sure all the resizing and connections work properly.
Build a new application with a window containing two overlapping views and several sliders. Connect sliders to the views and write code so that the user can change the RGB values and alpha channel of each view.
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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.