[plt-scheme] Scan key code in non-gui mode

From: nandehutu (chaguidiao at gmail.com)
Date: Sat Feb 6 05:11:08 EST 2010

Hi all

I'm a beginner in Scheme.  Is it possible to write a routine that can
detect a pressed key immediately and print out (byte or char) without
having to press "enter"?  So when a "spacebar" is pressed, the routine
will print out "32" right away.  I'm planning to write a non-gui app
so detecting the keyboard event throught scheme/gui seems like an
overkill to me.

Thanks in advance.

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