Allegro 5 api
#include <allegro5/allegro.h> int al_get_mouse_state_axis(const ALLEGRO_MOUSE_STATE *state, int axis)
Extract the mouse axis value from the saved state. The axes are numbered from 0, in this order: x-axis, y-axis, z-axis, w-axis.
ALLEGRO_MOUSE_STATE(3alleg5), al_get_mouse_state(3alleg5), al_mouse_button_down(3alleg5)