```
Window {
    Window {
        id: childWindow
    }
}

```

I have a QML like this, and `childWindow` icon does not display in task bar when the window is shown. My environment is Windows 7.
In a CPP setting I think it would suffice to set parent of `childWindow` to `0` to have both windows to be top level. 

But how to do that in QML?