WPF TextBox not accepting Input when in ElementHost in Window Forms

Question

We are developing a UI Control in WPF to be consumed within an existing Windows Forms / MFC application engine (Rhino 3D).

The application engine exposes the ability

Answer 1

Check out my own question about this very same thing. in the end though, all you need is something like this:

Window window1 = new Window();
ElementHost.EnableModelessKeyboardInterop(window1);
window1.Show();

Why is my WPF textbox "kinda" readonly?