Intergration with qt

CesiumJS
1

When I tried to integrate Cesium with qt, I tried to open HelloWorld with QWebView.

But it turns out the tool box without the 3D-earth.

I test the WebGL, it is ok.

here is part of my code

   ui.Earth_UI->settings()->setAttribute(QWebSettings::AcceleratedCompositingEnabled, true);
    ui.Earth_UI->settings()->setAttribute(QWebSettings::WebGLEnabled, true);
    ui.Earth_UI->load(QUrl("http://cesiumjs.org/Cesium/Apps/HelloWorld.html"));