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Analyze Your Code

Analyze your QuickDraw code so that you can understand what needs to change. Then develop a plan before you start reworking your code. Keep in mind that many things have changed in Mac OS X, and especially in Mac OS X v10.4. Technologies other than QuickDraw are deprecated in Mac OS X v10.4, including QuickDraw Text, Display Manager, and Draw Sprockets.

If, after analyzing your code, you plan to stick with the C APIs in the Carbon framework, you may want to use HIView along with Quartz. The HIToolbox offers many technologies that are complementary to Quartz (such as HIShape) and that will ensure that your application is updated for the 21st century.

If you decide to completely rewrite your application in all respects, you might want to think about moving to Cocoa. You can use the Quartz API in any framework outside of the kernel. When you use Cocoa, you can call Quartz directly and you can also use Cocoa drawing methods, which are built on top of Quartz.

As you analyze your code, take a careful look at how you use QuickDraw. Sometimes you’ll find that Quartz provides functional equivalents for your QuickDraw code, but more often than not you’ll need to think differently. Your application will benefit most if you can think beyond QuickDraw. That is, don’t just look for ways to accomplish the same task in Quartz. Take some time to think about how your application currently works and how you might be able to leverage the new capabilities that Mac OS X provides to improve the user experience of your application, not just maintain parity with your QuickDraw version.

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