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al_install_system(3)                                      al_install_system(3)

NAME
       al_install_system - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              bool al_install_system(int version, int (*atexit_ptr)(void (*)(void)))

DESCRIPTION
       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't been done already,
       al_uninstall_system(3) 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.

SEE ALSO
       al_init(3)

Allegro reference manual                                  al_install_system(3)