I don't do lots I have two small apps, veeery small . I'm foreign to GTK too and i keep meeting with the need of a X VAPI. However, this can't be done without a simple additional parser to at least specify which function is in which header (since vapigen doesn't bother to specify it). So I'm just beginning Maybe I'll have something to talk about in September, but i can't tell for sure now. EDIT: Forgot to tell i'm all for a Vala talk and how it can help the tablet development evolve (not by me though ).