title: QWindow won't give up its active focus
body: <p>I'm trying to embed a CEF window to a qml window. It now looks like this. <a href="https://i.stack.imgur.com/DFrYW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DFrYW.png" alt="enter image description here" /></a>
  When embedding, I set the parent window of CEF window(QWindow for now) to the qml window, and modify its position. I can't think of a better solution. It looks nice though.</p>
  <p>The problem is that the embeded QWindow won't give up its active focus. Once I clicked the embeded QWindow, <strong>activeFocusItem</strong> is set to null and no longer able to change</p>
  <pre><code>onActiveFocusItemChanged: {
      console.log(activeFocusItem)
  }
  // activeFocusItem changes whenever I click a item
  qml: TextField_QMLTYPE_8(0x23363645080)
  qml: TabButton_QMLTYPE_1(0x2336370a700)
  qml: TabButton_QMLTYPE_1(0x233638b2710)
  qml: TextField_QMLTYPE_8(0x23363645080)
  qml: TabButton_QMLTYPE_1(0x2336370a700)
  qml: TabButton_QMLTYPE_1(0x233638b2710)
  // clicked the QWindow, it no longer changes
  qml: null
  </code></pre>
  <p>code can be found <a href="https://github.com/isudfv/ICU-Brower/tree/master/src/ICU-Browser-UI" rel="nofollow noreferrer">here</a></p>