Provided by: allegro4-doc_4.4.2-4_all
poll_scroll - Checks the status of a scroll request with triple buffering. Allegro game programming library.
#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(3alleg4), request_video_bitmap(3alleg4), ex3buf(3alleg4), exupdate(3alleg4)