poll_scroll - Man Page

#include <allegro.h>

int poll_scroll();

This function is used for triple buffering. It checks the status of a  hardware scroll previously initiated by the request_scroll() routine.

Returns non-zero if it is still waiting to take place, and zero if the requested scroll has already happened.

request_scroll(3), request_video_bitmap(3), ex3buf(3), exupdate(3)

ex3buf(3), exupdate(3), request_scroll(3), request_video_bitmap(3).