al_get_window_constraints - Allegro 5 API

       Gets the constraints for a non-fullscreen resizable display.

       al_get_window_constraints - Allegro 5 API

al_set_window_constraints(3alleg5)

Allegro reference manual                                                      al_get_window_constraints(3alleg5)

       5.1.0

              #include <allegro5/allegro.h>

              bool al_get_window_constraints(ALLEGRO_DISPLAY *display,
                 int *min_w, int *min_h, int *max_w, int *max_h)