Hi, I'm trying to implement a preview feature in a managed application to
preview files of arbitrary type. Has anyone done this in a managed app? I've
seen at least one suggestion that you can host prevhost on your form, but
I'm not sure this is correct.

I've seen the IPreviewHandler and IPreviewHandlerFrame interfaces, but
haven't managed to use them from C#. They both live in shobjidl.idl, but
when I create the type library using midl.exe, the key interfaces are
missing.

Can anyone offer any assistance?

Tim