al_get_num_video_adapters
int al_get_num_video_adapters(void)
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.
See also: al_get_monitor_info
Examples: ex_draw_bitmap, ex_dualies, ex_monitorinfo, ex_windows, ex_winfull
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