I have written a windowed application, but it will only process when I have the window as the top window, if I minimise it freezes until I click on the window again...
How do I tell it to run all the time, regardless of whether it's in focus or not?
http://www.allegro.cc/manual/api/graphics-modes/set_display_switch_mode
EDIT: Sometimes a mode can fail and you may need to try another. Check the return value...