Hi

I need to make a solution which permits having secondary monitors on USB
(small
ones - vga/qvga)

As far as I seen the display driver model has changed completly from the XP.
Does anybody know a good startpoint for a vista display driver?
The R200Sample from the WDK is a good starting point?

A second problem is that Vista does not permits having two WDDM display
drivers from different vendors. Does anybody knows solutions for this?

XPDM is not really an option (only last one) since it switches off aero on
primary monitor too which is something would need to avoid ...

regards,
--
-Barni

There is no solution to your problem in WDDM, not untill etherogenoeus
adapter
support comes along in the Vista-OS succcessor.

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"Barna Csenteri" <BarnaCsenteri@discussions.microsoft.com> wrote in message
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That's what I also thought reading the WDDM docs.

What makes me confused though is Displaylink's vga2usb adapter which works
having aero on both primary and secondary monitor ... Which means that there
is a possible way doing it.

--
-Barni

My take is that they `wrap` dxgkrnl.sys and they install a companion
user-mode driver that wraps which-ever user-mode driver
used by the Direct3D runtime.
I doubt that their solution is going to work for more than
the number of video-present-paths already supported by
the original hardware, but, that's an educated guess.

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"Barna Csenteri" <BarnaCsenteri@discussions.microsoft.com> wrote in message
news:4E413378-8B3C-495B-81A8-C74701405C25@microsoft.com...