PHYS-18 #time 2h #comment Finally figured out why I couldn't access UserData in the callback function. I set the UserData for the dec_dt_button, but then was only pressing the inc_dt_button. Simply astounding.
PHYS-18 #time 2h 30m #comment All functions now working in control_center! Not relying on any static instances/members. The only static things left are the callback functions, which is acceptable/necessary. Damn fine lunchbreak coding.