I have a modification to a sample project (minapp) for the Genesis engine that I was using to test my own DI callback functions. IIRC it included keyboard and mouse callback support before I quit working on it.

If you''re interested, post an email and I''ll zip it up and send it to you. You won''t be able to run it w/o the Genesis runtimes, but the DI-related callback code might make sense to you. It''s in C btw.