title: How to develop web desktop using ExtJS 4?
body: <p>I have learned basics of ExtJS and developed some web apps using ExtJS. Now I have to develop web desktop using ExtJS (like desktop app which is present in examples folder) but I am not able to find any documentation or tutorial or book about how to develop it.</p>
  
  <p>Does anyone knows how to develop <strong>web desktop application using ExtJS 4?</strong> Where can I get any tutorial/ book/ video about developing web desktop?</p>