MDX messes up WPF scrollbars?

[Jake Pearson]

I have a very simple WPF user control that is mixed in with a windows forms
app. It has a list box that renders its scroll bar without the thumb (image
below). I narrowed it down to a plugin in my app that uses Managed DirectX
(MDX). If I remove the plugin, the scroll bar is just fine. I know MDX is
deprecated, but I don't think today is the day to consider an upgrade. Has
anyone come across this issue, or has any idea what I should do?

And I should add, that this control also lives in a plugin. There is no way
for the 2 plugins to reference each other.

[legalize+ (Richard [Microsoft Direct3D MVP])]

[Please do not mail me a copy of your followup]

Post by Jake Pearson
I have a very simple WPF user control that is mixed in with a windows forms
app. It has a list box that renders its scroll bar without the thumb (image
below). I narrowed it down to a plugin in my app that uses Managed DirectX
(MDX). If I remove the plugin, the scroll bar is just fine. I know MDX is
deprecated, but I don't think today is the day to consider an upgrade. Has
anyone come across this issue, or has any idea what I should do?

If its causing the problem, then why not consider an upgrade?

SlimDX. Its better than MDX.

[Jake Pearson]

I think either SlimDX or XNA might need to be put on the roadmap, but I'm
looking for a fix to let me limp along for a bit longer.

[noemata]

Are you the poster identified as "SoA Jake" on the XNA forums ...

I'm asking because I was looking for a working version of the
XNA/WPF/D3DImage solution mentioned there.