Checking if USB device is plugged in


Hi,

I'm looking for a way of checking whether a specific USB device (a webcam) is plugged in. I have the Vendor and Product ID numbers for the device.

I found an article (http://www.vsj.co.uk/articles/display.asp?id=600) with code sample that does the trick for human input devices (mouse, keyboard, ...) but am struggling for my webcam.

Any help appreciated, thanks.

Gary
.

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