Child NativeWindow blocks nativeEvent messages for a NativeWindow parent

[bibasmall]

Hello, everyone!
I have a top-level frameless window, and I want my application to have the Aero Snap Windows feature.
So I used the approach from this code
Qt-Nice-Frameless-Window,
which is based on using nativeEvent. It works like a charm, if I don't set Qt::WA_NativeWindow attribute for a child widget of my frameless wrapper, what I have to do. If I do, the reimplementation of nativeEvent of the top-level window doesn't get the required messages, so the widget becomes unresizable and unmovable.
If I override nativeEvent for the child native window, I see that I get the correct message when I hit the child, but I get nothing when I hit the frameless parent window.

The similar problem was discussed here
What decides where a native event gets sent?
But I have to keep the Qt::WA_NativeWindow attribute for the child widget.

Is there anything I can do to solve this?

Thanks in advance. Just in case, I apologize for the incorrect terminology.

[bibasmall]

The problem was that every child widget of the native widnow got it's own window descriptor (HWND), so, for example, if I hit the menubar, in nativeEvent I saw that the message had a different descriptor than the main window had.
This is what solved my problem:

QApplication a(argc, argv);
a.setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
//...
CEventFilter e{ &w };
a.installNativeEventFilter(&e);

[bibasmall]

I found that I could installNativeEventFilter and then call CFramelessWindow::nativeEvent directly inside nativeEventFilter(), so that I would actually pass the required message into the right place, but the result looks definetely broken. What am I doing wrong?

[bibasmall]

The problem was that every child widget of the native widnow got it's own window descriptor (HWND), so, for example, if I hit the menubar, in nativeEvent I saw that the message had a different descriptor than the main window had.
This is what solved my problem:

QApplication a(argc, argv);
a.setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
//...
CEventFilter e{ &w };
a.installNativeEventFilter(&e);