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Inside Macintosh: QuickDraw GX Environment and Utilities /

Chapter 4 - QuickDraw GX Debugging / About QuickDraw GX Debugging

Debugging Version of QuickDraw GX

You should use the debugging version of QuickDraw GX when you are writing and debugging applications. This version provides an extensive set of errors, warnings, and notices to help you understand the problems you may encounter during the execution of your application. In addition, this version provides special functions that allow you to manage errors, warnings, and notices and to provide public and private error validation.

The debugging version runs slower than the non-debugging version. The reasons for this are that the debugging version:

• performs additional error checking
• posts additional errors, warnings, and notices
• does not provide speed optimization, such as in-line functions
• generates MacsBug messages
• provides additional debugging functions, such as validation

To determine if the debugging or non-debugging version of QuickDraw GX is installed, see the chapter "QuickDraw GX and the Macintosh Environment."