ALLEGRO_DISPLAY_MODE - Allegro 5 API

       Used for fullscreen mode queries.  Contains information about a supported fullscreen modes.

              typedef struct ALLEGRO_DISPLAY_MODE {
                 int width;          // Screen width
                 int height;         // Screen height
                 int format;         // The pixel format of the mode
                 int refresh_rate;   // The refresh rate of the mode
              } ALLEGRO_DISPLAY_MODE;

       The refresh_rate may be zero if unknown.

       For an explanation of what format means, see ALLEGRO_PIXEL_FORMAT(3alleg5).

       ALLEGRO_DISPLAY_MODE - Allegro 5 API

al_get_display_mode(3alleg5)

Allegro reference manual                                                           ALLEGRO_DISPLAY_MODE(3alleg5)

              #include <allegro5/allegro.h>

              typedef struct ALLEGRO_DISPLAY_MODE