I'm guessing these aren't in the wrapper yet. Is there a way of using them from allegro_sys?

If EventQueue let you access the underlying ALLEGRO_EVENT_QUEUE, you'd just be able to use the C API, but it doesn't. It's easy enough to wrap though, if desired.

EDIT: WIP implementation here https://github.com/SiegeLord/RustAllegro/tree/user_events