allegro: Allegro (a game programming library for C/C++) allegro: allegro: Allegro is a game programming library for C/C++ developers distributed allegro: freely, supporting the following platforms: Unix (Linux, FreeBSD, allegro: etc.), Windows, MacOS X and Haiku/BeOS. Older versions also support allegro: DOS and QNX. It provides many functions for graphics, sounds, player allegro: input (keyboard, mouse and joystick) and timers. It also provides allegro: fixed and floating point mathematical functions, 3d functions, file allegro: management functions, compressed datafile and a GUI. allegro: allegro: