Got it working now, thanks. This is how I handled the SizeChanged event:
void window_SizeChanged(object sender, SizeChangedEventArgs e)
RadWindow window = sender as RadWindow;
(window.Content as BaseUserControl).Width = e.NewSize.Width - 55;
(window.Content as BaseUserControl).Height = e.NewSize.Height - 70;
It's not too elegant at the moment though. Is there a way to calculate the amount of available space inside the window?
I would also like to second Bens opinion about this being a killer product. I know I complain a lot here in the forum, but all in all I'm very impressed with the suite so far. Excellent stuff, guys!