How to set WPF Window's width equal to the content in its Title Bar?

Question

If I have Window in WPF as follows:

Answer 1

Add a hidden textblock in to the window:

The Margin allows for the windows controls to be pushed out of the way.

The Height makes the control take up no vertical space.

The Visiblity is probable not required because of the zero height, but by setting it to hidden will cause it to take up space on the canvas but show nothing.