Sorry, that doesn't work on a mac. glaux is a windows only (maybe it's also on posix too, I don't know), but it's not available for mac.

There's the QT pack OSC mentioned above; that's pretty fast. You could also load it using quartz, I found that a bit of a pain, but it's very effective, and there's a bit of code somewhere around here for that. If you're using cocoa, there's NSImage, but it's pretty slow.

You could always use libpng/jpeg, though bmps are fairly easy to load/write. (I prefer TGAs).

[edit] Ahh yes, the link is here. Enjoy!