install_int - Installs a user timer handler. Allegro game programming library.
#include <allegro.h>
int install_int(void (*proc)(), int speed);
Installs a user timer handler, with the speed given as the number of
milliseconds between ticks. This is the same thing as install_int_ex(proc,
MSEC_TO_TIMER(speed)). If you call this routine without having first installed
the timer module, install_timer() will be called automatically. Calling again
this routine with the same timer handler as parameter allows you to adjust its
speed.
Returns zero on success, or a negative number if there is no room to add a new
user timer.
install_timer(3), remove_int(3), install_int_ex(3),
install_param_int(3), exscn3d(3), exswitch(3),
extimer(3), exzbuf(3)