title: WPF: Remove the title/control box
body: <p>I've just switched over from WinForms to wpf and in WinForms removing the whole title box is very simple, just set the title=&quot;&quot; and ControlBox=false.</p>
  <p>Now there's many suggestions on how to do this with wpf, all of them using native Win32 calls.
  Although they do remove the control box, they still leave a thicker border at the top.</p>
  <p>I'm certain it's doable using some kind of native call, but how?</p>