reading through the hid driver stack, it seams to me that a filter driver for
an HID joystick must be in kernel mode, is it possible to write a umdf, user
mode driver that filters the hid joystick data before it reaches client apps?

i am guessing that yes you could install a UMDF filter on top fo the
joystick PDO enumerated by HIDCLASS, although you not have all of the
parsing routines requires in hid.dll like you have in hidparse.sys

d

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"tassadar" <tassadar@discussions.microsoft.com> wrote in message
news:4A554E14-1980-4AF0-B682-DBC752131590@microsoft.com...

thank you for responding,

i don't understand why this approach is so abnormal

any ideas on how i should proceed?



"Doron Holan [MSFT]" wrote:

not sure what you mean by abnormal. i do not think any one has really tried
a HID UMDF filter before, so you will be blazing new ground

d

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"tassadar" <tassadar@discussions.microsoft.com> wrote in message
news:038026B9-2CF0-4317-B7BD-BB747B91867F@microsoft.com...

Doron Holan [MSFT] wrote:
The requirement I saw was that UDMF drivers could only sit on top of the
driver stack, not between kernel layers. Not quite sure how that plays into
the joystick model.

this joystick driver woudl be at the top of the stack w/no km filters above
it

d

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"Ben Voigt [C++ MVP]" <rbv@nospam.nospam> wrote in message
news:udnk1qIzIHA.5716@TK2MSFTNGP04.phx.gbl...