signal for window manager to move a window

["Riswick, J.G.A. van" <J G A v Riswick tue nl>]

HI

I would like add to my application a 'handle' which
when clicked causes a 'move' operation on the 
window in which it sits, so that the window can
be dragged to a different location on the screen. 
Is there such a signal wich can be attached to 
an event box?

best regards

jos