title: Are dimensions device independent pixels in QML?
body: <p>I am using Qt 5.6.2</p>
  
  <p>If I am doing this:</p>
  
  <pre><code>Item {
     width: 20
     height: 20
  }
  </code></pre>
  
  <p>Are the values for <code>width</code> and <code>height</code> device independent or exact pixels?</p>