[R-gui] gwidgets drag and drop basic question

[Mark Heckmann]

I got stuck while trying to implement Drag and Drop in gwidgets.
I hoped the following code would call the handler function and thus  
print something to the console.
But it does not. ISo  suppose I do not understand some basic  
properties of the handler mechanism.
Can someone explain?

w <- gwindow()
lab  = glabel("drag me",container=w)
ed = gedit("drop here",container = w)
adddropsource(lab)
adddroptarget(ed, handler=function(h,...) print("arrived"))

Thanks,
Mark

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Mark Heckmann
Dipl. Wirt.-Ing. cand. Psych.
Vorstraße 93 B01
28359 Bremen
Blog: www.markheckmann.de
R-Blog: http://ryouready.wordpress.com