al_get_num_video_adapters(3)                      al_get_num_video_adapters(3)

NAME
       al_get_num_video_adapters - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              int al_get_num_video_adapters(void)


DESCRIPTION
       Get the number of video "adapters" attached to the computer.  Each
       video card attached to the computer counts as one or more adapters.  An
       adapter is thus really a video port that can have a monitor connected
       to it.

       On Windows, use al_set_new_display_flags(3) to switch between Direct3D
       and OpenGL backends, which will often have different adapters
       available.

SEE ALSO
       al_get_monitor_info(3)

Allegro reference manual                          al_get_num_video_adapters(3)