title: qt : Transparent QWidget on Maya Viewport
body: <p><img src="https://i.stack.imgur.com/ypurj.png" alt="enter image description here"></p>
  
  <p>I made a custom window for maya. It contains Maya's modelEditor, so I can use viewport control on my custom window. So I tried to leave QLabel on modelEditor as a HUD. But as you see, QLabel doesn't work it's transparency. I hope to let them have their transparency. Maya openGL doesn't treat well (maybe I think). Can I make a detour the problem?</p>