X11 Widget from QT QWidget

Question

Is it possible to extract an X11/Xt Widget from QT QWidget. I know there is a function WinId() on QWidget which gives me a Window but I need a Widget object.

Answer 1

I don't believe Qt uses Xt widgets at all, so the answer to your question would be no.

(Grepping for Xt in the source files found in the src/gui/kernel directory shows no hits.)

Answer 2

No, Qt/X11 uses X11 directly (well, using xlib/xcb, no Xt) and there is no such a thing as 'X11 widget'. If you want to include Qt widget in your Xlib application, you can use Xembed (or just reparent external qt application)