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+;;; -*-Scheme-*-
+;;;
+;;;    $Id: clipbrd.scm,v 1.1 1996/02/28 16:29:56 adams Exp $
+;;;
+;;;    Copyright (c) 1995-96 Massachusetts Institute of Technology
+;;;
+;;;    This material was developed by the Scheme project at the
+;;;    Massachusetts Institute of Technology, Department of
+;;;    Electrical Engineering and Computer Science.  Permission to
+;;;    copy this software, to redistribute it, and to use it for any
+;;;    purpose is granted, subject to the following restrictions and
+;;;    understandings.
+;;;
+;;;    1. Any copy made of this software must include this copyright
+;;;    notice in full.
+;;;
+;;;    2. Users of this software agree to make their best efforts (a)
+;;;    to return to the MIT Scheme project any improvements or
+;;;    extensions that they make, so that these may be included in
+;;;    future releases; and (b) to inform MIT of noteworthy uses of
+;;;    this software.
+;;;
+;;;    3. All materials developed as a consequence of the use of this
+;;;    software shall duly acknowledge such use, in accordance with
+;;;    the usual standards of acknowledging credit in academic
+;;;    research.
+;;;
+;;;    4. MIT has made no warrantee or representation that the
+;;;    operation of this software will be error-free, and MIT is
+;;;    under no obligation to provide any services, by way of
+;;;    maintenance, update, or otherwise.
+;;;
+;;;    5. In conjunction with products arising from the use of this
+;;;    material, there shall be no use of the name of the
+;;;    Massachusetts Institute of Technology nor of any adaptation
+;;;    thereof in any advertising, promotional, or sales literature
+;;;    without prior written consent from MIT in each case.
+;;;
+;;; NOTE: Parts of this program (Edwin) were created by translation
+;;; from corresponding parts of GNU Emacs.  Users should be aware that
+;;; the GNU GENERAL PUBLIC LICENSE may apply to these parts.  A copy
+;;; of that license should have been included along with this file.
+
+;;;; Clipboard access
+
+
+(define (win32-clipboard-write-text s)
+  (let ((clip? (open-clipboard 0)))
+    (and clip?
+        (let* ((len  (+ (string-length s) 1))
+               (mem  (global-alloc #x2002 #|= GMEM_MOVEABLE + GMEM_DDESHARE|#
+                                   len)))
+          (if (= mem 0)
+              #F
+              (let ((ptr  (global-lock mem)))
+                (if (= ptr 0)
+                    #F
+                    (begin
+                      (copy-memory ptr s len)
+                      (global-unlock mem)
+                      (set-clipboard-data CF_TEXT mem)
+                      (close-clipboard)))))))))
+
+(define (win32-clipboard-read-text)
+  (let ((clip? (open-clipboard 0)))
+    (and clip?
+        (let* ((mem  (get-clipboard-data CF_TEXT)))
+          (if (= mem 0)
+              #F
+              (let* ((maxlen (global-size mem))
+                     (s      (string-allocate maxlen))
+                     (ptr    (global-lock mem)))
+                (copy-memory s ptr maxlen)
+                (global-unlock mem)
+                (close-clipboard)
+                (let ((end (vector-8b-find-next-char s 0 maxlen 0)))
+                  (set-string-length! s end))
+                s))))))
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