Creating fltk apps with Xcode
If you are tired of heavy-weight (but still decent) GUI tool kits like Qt 4 or wxWidgets, you should take a look at fltk. A statically linked, Intel-only “hello world” takes just 212kb on Mac OS X:
Feel free to use this simple quickstart (zip, < 900kb, incl. fltk 1.3) if you’d like an Xcode sample project.

Thank you! I’ve been fighting with Xcode for hours trying to get it up and running and your quickstart did it in 5 seconds
Now I can actually get some work done
Thanks, spent too long trying to get it to work.
Would you happen to have a 1.3 (x86_64) version of that quickstart project?
I’m deeply impressed with FLTK and your carbon example, above, but I need 64-bit memory spaces and eventually to integrate this into a CS5 plugin.
@CHris: FLTK developers added a patch for v1.3 that resolved problems with Carbon in November 2010. Since then, FLTK can be built for 64bit processors on Mac OS X 10.6 Snow Leopard. They are using cmake now, so building it and creating Xcode projects is quite easy.