>Plus, if you need to draw something with Quartz, you can mock it up first in Opacity, and then have it generate the source code for your drawing, which you the

>Plus, if you need to draw something with Quartz, you can mock it up first in Opacity, and then have it generate the source code for your drawing, which you then integrate into your class. Wow, that's worth the price of admission alone. Writing drawing code by hand takes forever and is the worst kind of time sink: the almost-but-not-quite mindless kind.