[plt-scheme] MrEd - Pasteboard

Admiitedly I'm a newbie in Scheme, I'm quite experienced in Prolog and 
basic-Scheme is therefor easy. I'm trying to make an GUIInterface to some 
game with MrEd. I've been reading through the manual, but it doesn't help me 
very much... I want to use a frame with some 'dragable' bitmaps... The 
manual gives a lot of information and some examples about creating editors, 
but very little about the pasteboard, Im getting particularly lost with the 
dc<%>-concept (the how to question arises!!)... Can anybody get me going: 
create the canvas, definea bitmap (I got so far), load an image (maybe with 
mask), put it on the canvas and drag it from A to B and how to extract 
information from this move to some scheme functions...

Thanks in advance

Jimbo

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