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Terminal control/Positional read: Difference between revisions
→{{header|Racket}}
(omit from Tcl; platform support for feature usually absent) |
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Line 106:
return 0;
}</lang>
=={{header|Racket}}==
Works in a CMD box on Windows:
<lang racket>
#lang racket
(require ffi/unsafe ffi/unsafe/define)
(define-ffi-definer defwin #f)
(defwin GetStdHandle (_fun _int -> _pointer))
(defwin ReadConsoleOutputCharacterA
(_fun _pointer _pointer _uint _uint [len : (_ptr o _uint)] -> _bool))
(define b (make-bytes 1 32))
(and (ReadConsoleOutputCharacterA (GetStdHandle -11) b 1 #x50002)
(printf "The character at 3x6 is <~a>\n" b))
</lang>
=={{header|REXX}}==
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