Re: device ID string.

skejariwal-eMvYNY28iGNBDgjK7y7TUQ@xxxxxxxxxxxxxxxx wrote:
> Hi everyone,
>
> I get the device ID string from the HP Inkjet printer through my C
> program and it works fine. However, if the printer is in use, the C
> program fails to open the device ie /dev/usb/lp[value] since it is
> already opened by the application using the printer.
>
> I was wondering if the CUPS code could be modified somehow to report
> device ID string continuously from the point when a job is sent out
> for printing to when the job is complete. Please let me know if there
> is a way this can be done.

You could modify the CUPS code to do this, however it would not be
a reliable way to collect the device ID.  What you *really* want to
do is poll the port at regular intervals and cache/store the device
ID in a common file/shared memory segment/etc., or provide your own
backend which communicates with your software...

--
______________________________________________________________________
Michael Sweet, Easy Software Products                  
mike-B9D8k9nSxTHQT0dZR+AlfA@xxxxxxxxxxxxxxxx
Printing Software for UNIX                       http://www.easysw.com