Problem while Docking/Undocking of the QDockWidget on the default mainwindow "Central

[pastispast]

Hi Friends,

I am facing the problem while Docking/Undocking of the QDockWidget on the default mainwindow "CentralWidget". I am using method "setCentralWidget()" to setting the dockwidget on the main window.

But when I dock it and trying to undock again then it does not worked.

Is there any known way to deal with this problem?

Note: I have tried to set the float behavior using mouse double click as:

setFloating(false) &
setCentralWidget(...);

But it doesn't work.

I have attached my example along with this post.

Thanks...