Trying to make window from MTA thread...

I have an application running in an MTA thread, and I want to pop up an
Avalon window. So far, I've been creating the Window object in the MTA thread
and calling Window.Dispatcher.Invoke with a delegate that calls ShowDialog,
but that doesn't seem to be working...the first time it happens I get an
exception saying that the window handle is invalid, and any future times the
call works but no window appears.

Do I have to create the Window object from an STA thread, or perhaps I'm
doing something rather silly?

Thanks,
Nick

MTA is not supported -- STA only.

--
-Nick Kramer [MSFT]
http://blogs.msdn.com/nickkramer

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"Nick" <Nick@discussions.microsoft.com> wrote in message
news:CFC396BD-37C0-45FF-A5F8-D846185FC410@microsoft.com...
>I have an application running in an MTA thread, and I want to pop up an
> Avalon window. So far, I've been creating the Window object in the MTA
> thread
> and calling Window.Dispatcher.Invoke with a delegate that calls
> ShowDialog,
> but that doesn't seem to be working...the first time it happens I get an
> exception saying that the window handle is invalid, and any future times
> the
> call works but no window appears.
>
> Do I have to create the Window object from an STA thread, or perhaps I'm
> doing something rather silly?
>
> Thanks,
> Nick

Do you mean that you can only create windows from an STA thread, or do
you mean that there isn't any possible interaction with MTA threads at all?

What I'd like to do is create a new STA thread, create a window on that,
and figure out how to start passing data to it. Is that not possible?

Thanks,
Nick

Any thread with a WPF dispatcher requires STA, other non-UI threads can use
MTA.

--
-Nick Kramer [MSFT]
http://blogs.msdn.com/nickkramer

---
This posting is provided "AS IS" with no warranties, and confers no rights.
Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm


<user@domain.invalid> wrote in message
news:OT5WZLnNGHA.668@TK2MSFTNGP11.phx.gbl...
> Do you mean that you can only create windows from an STA thread, or do you
> mean that there isn't any possible interaction with MTA threads at all?
>
> What I'd like to do is create a new STA thread, create a window on that,
> and figure out how to start passing data to it. Is that not possible?
>
> Thanks,
> Nick