title: Non client painting on aero glass window
body: <p>Now Im customizing title bar of my application. My aim is to add one extra button on title bar. Im my <a href="https://stackoverflow.com/questions/5571072/how-to-add-an-extra-button-to-the-window-title-bar-so-it-will-be-work-as-standar">previous question</a>  people have adviced me the way I can customize non client area. Thats works perfectly except one small thing - <strong>glowing</strong>! I can draw glowing in nonclient area but <strong>I cannot make it spreads out of the window</strong>. I also cant find any resource about this subj. </p>
  
  <p>I looked into <a href="http://www.codeproject.com/KB/dialog/AeroNonClientAreaButtons.aspx" rel="nofollow noreferrer">this</a> sample and made my own test app for investigating non client drawing facilities. Screen shot of my app's window:</p>
  
  <p><img src="https://i.stack.imgur.com/3huiO.png" alt="my app&#39;s window"></p>
  
  <p>So you can see that system button glows out of the windows when my is clipped by borderframe. </p>
  
  <p>For example, Skype's window have four custom buttons in title bar and they can "glow" out of the window frame:</p>
  
  <p><img src="https://i.stack.imgur.com/gEw3E.png" alt="Skype&#39;s window"></p>
  
  <p>Can anybody advise me to find out the way to draw button's glowing out of the window?<br>
  Thanks in advance!</p>
  
  <p><strong>[EDIT]</strong><br>
  Thank you everybody for answers!</p>