In article <alpine.DEB.2.00.0912140749070.9614@xxxxxxxxxxxxxx>, Iyonix PC Owner <iyonix@xxxxxxxxxxxxxx> wrote: > On Mon, 14 Dec 2009, Jeremy Nicoll - freelists iyo only wrote: > [snip] > > Does that mean that the application (on Windows) that responds to > > buttons being pressed on the scanner is actually polling it? > Yes, you have got the idea now. There is a command 'Request Push button status' that returns with different bits set depending on which buttons have been pressed. I did look at it when developing MFPxEpson but I'm not aware of any multifunctions that have the buttons. I decided the requirement to repeatedly poll the device makes the buttons rather pointless. Ian -- Ian Hamilton (Iyonix RO5) http://www.hamiltoni.pwp.blueyonder.co.uk/ --- To alter your preferences or leave the group, visit //www.freelists.org/list/iyonix-support Other info via //www.freelists.org/webpage/iyonix-support