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poll_joystick(3)                Allegro manual                poll_joystick(3)

NAME
       poll_joystick - Polls the joystick. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       int poll_joystick();

DESCRIPTION
       The joystick handler is not interrupt driven, so you need to call this
       function every now and again to update the global position values.
       Example:

          do {
             /* Get joystick input */
             poll_joystick();

             /* Process input for the first joystick */
             if (joy[0].button[0].b)
                first_button_pressed();

             if (joy[0].button[1].b)
                second_button_pressed();
             ...
          } while(!done);

RETURN VALUE
       Returns zero on success or a negative number on failure (usually
       because no joystick driver was installed).

SEE ALSO
       install_joystick(3), joy(3), num_joysticks(3), exjoy(3)

Allegro                          version 4.4.2                poll_joystick(3)