install_param_int - Man Page

#include <allegro.h>

int install_param_int(void (*proc)(void *), void *param, int speed);

Like install_int(), but the callback routine will be passed a copy of the  specified void pointer parameter. To disable the handler, use  remove_param_int() instead of remove_int().

install_timer(3), remove_param_int(3), install_param_int_ex(3), install_int(3)

install_int(3), install_param_int_ex(3), remove_param_int(3).