[plt-scheme] What scheme module is this GUI code for?

From: Carnell, James E (jecarnell at saintfrancis.com)
Date: Fri Sep 21 09:51:04 EDT 2007

I was looking at this code and it is almost the same as wxPython which
is a Python wrapper for a Xwindow system (I think I am saying that right
[I have yet to make a wrapper personally]). This is the best news so far
today... Maybe after getting wxPython into my head whatever module the
code below is for won't be totally new! 

                         ; Get the canvas's drawing context
                         (define dc (send canvas get-dc))
                         ; Make some pens and brushes
                         (define no-pen (make-object pen% "BLACK" 1
                         (define blue-brush (make-object brush% "BLUE"
                         (define yellow-brush (make-object brush%
                         (define/public (redraw-chart list-of-integers)
                           (send dc set-pen no-pen)
                           (send dc set-brush blue-brush)
                           (send dc draw-rectangle 0 0 100 200)  ; big
blue rectangle

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