Question

How would you get a display of dockwidgets/centralwidget in which the dockwidget in the Qt::BottomDockWidgetArea or Qt::TopDockWidgetArea doesn’t take Qt::LeftDockWidgetArea nor Qt::RighDockWidgetArea space?

This is the actual display, with 2 dockwidgets and the central widget at the top right:

This would be the preferred display:

Answer 1

you probably should use the QMainWindow‘s corner functionality to get the behavior you wanted.

Something like this may work (can’t test whether its compiles, sorry):

mainWindow->setCorner(Qt::TopLeftCorner, Qt::LeftDockWidgetArea);
mainWindow->setCorner(Qt::TopRightCorner, Qt::RightDockWidgetArea);
mainWindow->setCorner(Qt::BottomLeftCorner, Qt::LeftDockWidgetArea);
mainWindow->setCorner(Qt::BottomRightCorner, Qt::RightDockWidgetArea);

See:
* QMainWindow::setCorner(…)