title: WPF panel header title
body: <p>I am not sure they correct terminology for a header/title bar of a component in WPF. What I need is a panel/non-floating window, in which I can set the title? I want a few components in a panel that needs a title like Properties and Toolbox in Visual Studio.</p>
  
  <p>As mentioned earlier, this doesn't need to be a floating/docking panel. I don't want GroupBox. I will be adding close button later just to hide the component from the user.</p>