title: How to find the window that contains the QtVirtualKeyboard
body: <p>I'm using qt widgets on embedded device and have problem with virtual keyboard. Keyboard is shown as fullscreen and overlaps all app.</p>
  <p>In article <a href="https://stackoverflow.com/questions/61608431/virtual-keyboard-top-black-screen-in-yocto">Virtual keyboard top black screen in Yocto</a> is described hack how to solve this issue.</p>
  <p>In short, you need to find the QQuickWindow with the keyboard and call setMask on this window. Then the area above the keyboard will be transparent</p>
  <p>I have problem how to find QQuickWindow with virtual keyboard. I tried to use</p>
  <pre><code>QApplication::allWidgets()
  </code></pre>
  <p>but the window isn't here.</p>