QDockWidget fixed size?

I've used Designer to create a QDockWidget that should only exist in the top or bottom parts of the screen. So far so good.

But even though it should only be two buttons high, whatever properties I alter, a splitter-handle exists so the user can resize the dockwidget.

How do I remove this handle and give the widget a fixed height?

I suspect it can't be done in Designer, so I'm asking the question in the Qt Programming forum.

Thanks!

Edit: Oh, it's QT 4, by the way.

I want to know the answer also. Or is there any way to change the DocWidget and QToolBar size by coding?