Path: utzoo!attcan!uunet!husc6!spdcc!bloom-beacon!athena.mit.edu!ilham
From: ilham@athena.mit.edu (Ilhamuddin Ahmed)
Newsgroups: comp.lang.lisp
Subject: Calling C from Common Lisp and vice versa
Keywords: Lisp, C
Message-ID: <6454@bloom-beacon.MIT.EDU>
Date: 28 Jul 88 05:27:42 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Reply-To: ilham@athena.mit.edu (Ilhamuddin Ahmed)
Organization: MIT Laboratory for Computer Science
Lines: 26


I am not sure if this has been asked before or not as I just joined this
newsgroup, and if it has I apologise.

I have an application in Common Lisp which consists of an array as a
data structure. I wish to pass this array to a C function which goes
through the array and display a graph in an X window. My problem is that
how would I call a C function from Common Lisp and how would I pass the
array (or any data structure for that matter) from Lisp to C.

The other side of the story is that, I have buttons in X (implemented in
C) which when clicked should change the state of the Common Lisp
program. So in this case, how can I execute a Common Lisp function from
C.

Any help would be very much appreciated. Thanks in advance.

						- Ilham.


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Ilhamuddin Ahmed, M.I.T. '91     | Arpa: ilham@juicy-juice.lcs.mit.edu
M.I.T. Lab for Computer Science  |       ilham@athena.mit.edu
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