Re: HID pointing device and the Virtual Desktop

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Adrian Taylor (Adrian_at_not.here)
Date: 12/02/04 

Date: Thu, 2 Dec 2004 19:32:12 -0000

More Information :

I am using a standard Mouse USAGE with absolute values for X and Y for this
whiteboard device : as I could never get Windows to react at all to the
Digitizers USAGE. Could this be the problem?

If so, can the WACOM report descriptor for a digitizer on a tabletPC in the
DDK be used for normal XP? I've tried using this to no avail too ... are
there some common pitfalls to using this USAGE? (Also, what's the 'dummy
mouse' second collection all about? ... this all smacks of being a bit of a
bodge)

Adrian Taylor.

"Adrian Taylor" <Adrian@not.here> wrote in message
news:coo1tb$cce$1@newsg3.svr.pol.co.uk...
>I have a HID device driver for an absolute pointing device attached to an
>XP computer with mulitple monitors. Everything I have read tells me the
>pointing device should map across the whole virtual desktop : this would
>allow me to choose which monitor to control by simple offsetting of the
>coordinate data.
>
> However, the device will only ever map to the Primary Desktop : no amount
> of scaling or offsetting of the coordinates can get the pointer over to
> the sencondary display at all.
>
> What is going on? I know a standard WACOM HID device will go over both
> desktops, so it can't be mouhid that's the problem. I am using a very
> standard absolute pointing device report descriptor, which has always
> worked just fine for a single screen.
>
> Adrian Taylor 

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