dockWidget not undocking in centralWidget

[d_stranz]

I know that, but I need to have a centralDock.

No, you don't. You need a central widget to satisfy the requirements for using QMainWindow. You need to design a custom QWidget that has the layout and behavior you want and use that as the central widget. Just because a QDockWidget -looks- like something you could use, and just because you -can- add a layout directly to QMainWindow doesn't mean it is going to behave as you wish (but seem unwilling to accept).

[thibs]

I got it. I thought that this 'hack' would be efficient, but as you're saying, the QDockWidget will not work as a expect. Would you know how I could implement the dragging movement from scratch then?