al_show_mouse_cursor - Allegro 5 API

       Make a mouse cursor visible in the given display.

       Returns  true  if  a  mouse  cursor  is shown as a result of the call (or one already was visible), false
       otherwise.

       al_show_mouse_cursor - Allegro 5 API

al_hide_mouse_cursor(3alleg5)

Allegro reference manual                                                           al_show_mouse_cursor(3alleg5)

              #include <allegro5/allegro.h>

              bool al_show_mouse_cursor(ALLEGRO_DISPLAY *display)