title: Open and communicate with Excel in my Qt Application
body: <p>I'm actually creating an application in QtCreator (open source), and I need to open Excel and communicate by sending to Excel data to show. I try to <code>#include &lt;QAxWidget&gt;</code> , and to modify my <code>.pro</code> file with: </p>
  
  <pre><code>CONFIG+= axcontainer
  Qt += activeqt
  </code></pre>
  
  <p>But it didn't work. I've got the error <code>QAxWidget was not declared in this scope</code>. I read lots of things contradictory on the Internet, like you must paid licence or else.</p>
  
  <p>Can you explain to me, if there's a way to solve my problem? Thanks.</p>