[Interest] Tabbed toolbar

[Christian Gagneraud]

Hi,

I would like to manage tool/actions using an "advanced" toolbar system, 
on this visual [1] they call it "tabbed command manager"
The issue is not much the tabification of the toolbars, but instead the 
layout of the tool buttons as QToolBar doesn't support displaying 
buttons in a grid (multi-line)

Does anyone knows of open source implementations of such "tabbed command 
manager"? Or maybe any tips on how to achieve this?

Thx,
Chris

[1] http://www.solidsmack.com/wp-content/uploads/2007/06/sw08-018.jpg