[plt-scheme] Keystrokes

From: Richard Cleis (rcleis at mac.com)
Date: Sun Nov 25 22:50:32 EST 2007

The following works, but overriding on-subwindow-char seems a little  
severe.  Is there another way to get the key-events?

(require (lib "mred.ss" "mred")
          (lib "class.ss" "mzlib"))

(define  the-frame
   (new (class* frame% ()
            (on-subwindow-char the-win key-event)
            (display (send key-event get-key-code))
          (super-instantiate ()))
        (label ":-)")
        (width 100)
        (height 100)))

(send the-frame show #t)


On Nov 22, 2007, at 7:22 PM, Robby Findler wrote:

> In DrScheme's REPL, you must type return before any of the characters
> are submitted to the input port.
> But you can probably with only a few lines make a window popup, wait
> for a character to be typed there, and then go away.
> Robby
> On Nov 22, 2007 8:21 PM, Richard Cleis <rcleis at mac.com> wrote:
>> Is it possible to (read-the-next-keystroke) without requiring the
>> typing of <return>?
>> rac
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