QDockWidget Problem.

[ChrisW67]

Here is what I think you want:

• A layout of three panels with some ratio of space allocation.
• Each panel can contain zero or more QDockWidgets.
• When panel contains no docked widgets it remains present in the layout and empty.

Have you tried using splitters or another layout method to place three QMainWindows inside your application's main window central widget. The QDockWidgets can be docked with these subordinate QMainWindows rather than the top level one.