Hello, I'm a physics student from Spain. I've been using Common Lisp from 6 months ago, and I like ltk as a GUI toolkit. I've developed a library (only 40 lines of code) that can load and create a ltk interface from a file with a description of It. That description is stored on a struct. Thanks to that, It's very easy to read and generate them from Lisp. Actually, the library lacks support for others geometry managers than pack, but I'll add It sooner. I want to use It to create an interface builder similar to glade, but for ltk. I've intented that before, but lacked what this library does. I believe It won't be so difficult to do, but I have not much time. The library is at http://mural.uv.es/feana/programes/pam.tar.gz . At the moment It does not use asdf, just load It with (load (compile-file " llibreria.lisp")) . A little test is included, you can test It: (defun prova (x) (print 'hello)) (use-package :ltk) (load "llibreria.lisp") (defun run () (with-ltk () (load_interface_from_file "descriptio.lisp"))) (run) It will create a button and binds "<Motion>" to the prova function. It has been tested (only a few, It's not finished yet) on CMUCL and Linux on a x86 machine. Please, send me any suggest if you want. Thanks you. Bye!