Any Win 10 fluent examples? Perhaps WinUI integation?
Edit: NodeGUI here: https://github.com/nodegui/nodegui
yep, basically you have to do :
auto window = QWindow::fromWinId(reinterpret_cast<WId>(/* HWND, NSView, X11 buffer, Wayland surface... /*));
auto widget = QWidget::createWindowContainer(window);
and then you can use the widget like any other Qt widget, put it in a layout, etc... (of course caveats may apply when you start doing transparency or other fun things).