title: Setting Caliburn IWindowmanager's Owner Property to Excel with handle HWND
body: <p>I have an Excel Vsto addin application in which I host WPF application build using Calibrun Micro Autofac.I have a dialog popping up the excel and I want that Pop up window's Owner to be set to this excel window.Only way I see doing this is using WindowInteropHelper Class which needs Window instance.</p>
  
  <p>And I am using settings like this :</p>
  
  <pre><code>dynamic settings = new ExpandoObject();
  </code></pre>
  
  <p>And I show window like this :</p>
  
  <pre><code>windowManager.ShowDialog(viewModel, settings: settings);
  </code></pre>
  
  <p>So What should I do to set the settings.Owner Property to this excel window(Whose Handle is known) so that the Pop up window is always on top of excel window??</p>