Brian,

I didn't get that. I did checked for apartment-threaded when I created this
using atl object wizard.

-Fareed.

-----Original Message-----
From: Distributed COM-Based Code [mailto:DCOMDISCUSS.MICROSOFT.COM]On
Behalf Of Brian Muth
Sent: Thursday, August 30, 2001 4:10 PM
To: DCOMDISCUSS.MICROSOFT.COM
Subject: Re: atl module single instance.

>
> Thanks for replying. The requirement is that the object should be able
to
> work with a kernel mode driver, handle of which is created using
> CreateFile
> API. This API will fail if the driver handle is already created and is
> still
> open by some other object or app. Now, if I somehow able to connect to
the
> running object that is serving either local or remote client, then
there
> is
> no need to create another instance hence I can avoid this problem.
>

Most experienced DCOM programmers would advise against your approach in
favor of sharing the driver handle as a static member variable, and
protecting it using some kind of synchronization.

For example, why not just mark your object as apartment-threaded. Then
your method calls will automatically be serialized.

HTH,
Brian

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