title: NotifyIcon.ShowBalloonTip not keeps timeout
body: <p>I show notify information:</p>
  
  <pre><code> notifyIcon.ShowBalloonTip(29000, "title", "message", ToolTipIcon.Info);
  </code></pre>
  
  <p>It should show 29 000 milliseconds, but it disappears in less than a second.</p>
  
  <p>I understand this is controlled by the operating system. But there should be a way to increase the duration of the show?</p>
  
  <p>Use windows 7.</p>