rolf.kalbermatter at citeng.com
Wed Aug 11 08:49:03 CDT 2004
Aric Stewart wrote:
>I do have some difficulty figuring out how win2k is translating vender
>and product ids into class and interface guids. The documentation
>reports that they look them up in inf files, however i am finding that
>not to be true. I am suspecting that some may be hardcoded in the usb
Wouldn't that be something which would be put in the registry somehow
for the well known IDs and for the rest I really assume the device
detection routine does check for all .inf files it finds on the devices
currently configured to be searched. If you look at PCI and USB inf
files you will notice that the manufacturer and device ID are actually
encoded in the key names which are to be added to the registry. That
encoding does not always seem to be equally consistent, I've seen at
least two different types, but it is obviously there.
One entry for instance for the Logitec PageScanner would be
USB\VID_046D&PID_040f.DeviceDesc="Storm Technology - Logitech PageScan USB"
This is partly extracted from a logiscan.inf file on my W2K system.
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