On Tue, Sep 18, 2001 at 12:56:43PM +0200, Oliver Neukum wrote:
> are you sure that this approach will work with several scanners of the same
> type attached ?
We were discussing printers, not scanners. I may have misstyped
somewhere. However, scanners are just as worthwhile. Fundamentally,
there is no way that the software side can know that "01/01" is the
printer on the left of the monitor, and "01/02" is the printer on the
right of the monitor. In the example I was using, if you have two HP
600C printers, they show up as a choice of "print on HP 600C" and "print
on HP 600C". There isn't any more space information to provide the user
However, once a selection has been made (eg, the first one), you
then have a specific Bus/Device combination to work off of (01/01). You
can then look at the /dev/usb/lpX devices (or /dev/usb/scannerX if you
like) and try to match up the Bus/Device ids with something like
LPIOC_GET_BUS_ID and so on. These ioctls are only to cover the case of
"what /dev maps to what bus/device, and vice versa".
Joel
--
Life's Little Instruction Book #314
"Never underestimate the power of forgiveness."
Joel Becker
Senior Member of Technical Staff
Oracle Corporation
E-mail: [EMAIL PROTECTED]
Phone: (650) 506-8127
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