al_install_system (3alleg5)

• #include <allegro5/allegro.h>
  
  bool al_install_system(int version, int (*atexit_ptr)(void (*)(void)))
  
  

Initialize the Allegro system. No other Allegro functions can be called before this (with one or two exceptions).

The version field should always be set to ALLEGRO_VERSION_INT.

If atexit_ptr is non-NULL, and if hasn\[aq]t been done already, al_uninstall_system(3alleg5) will be registered as an atexit function.

Returns true if Allegro was successfully initialized by this function call (or already was initialized previously), false if Allegro cannot be used.

al_init(3alleg5)