[plt-scheme] How does a GUI application terminate?

I'm trying to get my feet wet with GUI applications, and one thing  
that's not clear to me is how to ask an application to close. Right  
now, I have code that looks like this for the "Close" menu item

(define mi-quit (new menu-item% [label "Quit"]
                                  [callback
                                  (lambda (item evt)
                                    (printf "Invoking ~s  
menu...~n" (send item get-label))
                                    (send f show #f))]
                                  [parent m-file]))

but then it seems that I ought to signal that event processing should  
stop. My first thought was something like (send f close), but there  
is no close method in frame%.

"Judge a man by his questions not
his answers."   --Voltaire

http://www.gwoodhouse.com
http://GregWoodhouse.ImageKind.com





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