Hi Andrew Hope you are fine and you enjoyed your stay in Zurich? A question to the developer: Since in the swap_buffers() code you wait for the vsync pulse: would it be possible not only to wait for the vsync but in this time also polling the LPT, logging any changes in the Lpt and returing it to the main loop (with a log-object as return value)...? would be nice, this way being able to log button-box responses, wired to LPT, even during the small time-window, where VE waits for the vsync. did I explain myself clearly? Thanks for a short feasibility reply:) Cheers Christoph -- Christoph Lehmann <lehmann@xxxxxxxxxxxx> University Hospital of Clinical Psychiatry ====================================== The Vision Egg mailing list Archives: //www.freelists.org/archives/visionegg Website: http://www.visionegg.org/mailinglist.html