Provided by: allegro5-doc_5.0.11-2_all 

NAME
al_set_keyboard_leds - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
bool al_set_keyboard_leds(int leds)
DESCRIPTION
Overrides the state of the keyboard LED indicators. Set leds to a combination of the keyboard modifier
flags to enable the corresponding LED indicators (ALLEGRO_KEYMOD_NUMLOCK, ALLEGRO_KEYMOD_CAPSLOCK and
ALLEGRO_KEYMOD_SCROLLLOCK are supported) or to -1 to return to default behavior. False is returned if
the current keyboard driver cannot set LED indicators.
al_set_keyboard_leds(3all... Allegro reference manual()