title: WPF Application as OLE server
body: <p>I know that there are a lot of posts about this issue, but I've googled so much last five days and didn't find any working solution (and couldn't do it myself).</p>
  
  <p>Could anybody upload a simple wpf application (may be a <code>TextBox</code> inside <code>Border</code>), which acts as an OLE server. For instance, I insert dll in MS Excel and see that <code>TextBox</code> inside <code>Border</code>.</p>
  
  <p>Now I could do only such thing: I insert my dll in MS Word and see "[dll name].dll". Once I open an icon a window opens. But I want to have an embedded window.</p>