Hi,

I am trying to interactively move a QDockWidget from one QMainWindow to another.
After pressing the mouse button and moving the mouse the dock widget should be 
reparented to another main window (underlying at the current mouse position) in 
order to get instant visual feedback.
While the basic concept works I need to determine the top-most QMainWindow 
which is under the current cursor position.

Since the dock widget is moved together with the mouse it is the top-most 
widget returned by qApp->widgetAt(mouse_position).
In order to look "below" this dock widget I currently hide the dock widget, 
call widgetAt() and show the dock widget again (indeed very hacky)

This results in flickering of the dock widget and does not work if the widget 
below is not a main window.
Actually I would need to do the (hide, widgetAt, show) recursively until I find 
a main window or no widget at all.

Is there any function which provides me a list of widget which are layered at a 
specific coordinate (at best ordered top-down)?
I am aware that this might be costly to calculate.
Or is there another way to get this information?

Thank you for your feedback,
Dirk

-- 

Dr.-Ing. Dirk Thomas                E-Mail: dtho...@sim.tu-darmstadt.de
Simulation, Systems Optimization    Phone:  ++49 (0) 6151-16-4722
and Robotics Group (SIM)            Mobil:  ++49 (0) 176-231 241 56
Technische Universitaet Darmstadt   http://www.sim.tu-darmstadt.de
Hochschulstr. 10                    D-64289 Darmstadt, Germany
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