Forms is a GUI toolkit based on Xlib that features a rich set of objects, such as buttons, scrollbars, menus, etc. integrated into an object/event callback execution model that allows fast and easy construction of X applications. It's also extensible, and new objects can easily be created and added to the library.

http://freshmeat.net/projects/xforms/ http://freshmeat.net/projects/xforms/download/ ftp://ncmir.ucsd.edu/pub/xforms/linux-i386/elf/bxform-089-glibc2.1.tgz