device ID string.

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.

Thanks,
Shreyas

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