man load_joystick_data () - Loads joystick calibration data. Allegro game programming library.
NAME
load_joystick_data - Loads joystick calibration data. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int load_joystick_data(const char *filename);
DESCRIPTION
Restores calibration data previously stored by save_joystick_data() or the setup utility. This sets up all aspects of the joystick code: you don't even need to call install_joystick() if you are using this function. Pass a NULL filename to read the data from the currently selected configuration file.
RETURN VALUE
Returns zero on success: if it fails the joystick state is undefined and you must reinitialise it from scratch.