al_get_touch_input_state - Allegro 5 API

       Gets    the    current    touch    input   state.    The   touch   information   is   copied   into   the
       ALLEGRO_TOUCH_INPUT_STATE(3alleg5) you provide to this function.

       al_get_touch_input_state - Allegro 5 API

       5.1.0

Allegro reference manual                                                       al_get_touch_input_state(3alleg5)

              #include <allegro5/allegro.h>

              void al_get_touch_input_state(ALLEGRO_TOUCH_INPUT_STATE *ret_state)