On 6/25/06, Luís Oliveira <luismbo@gmail.com> wrote:
[Hello Jan. Sorry for the late reply!]
Jan Rychter <jan@rychter.com> writes:
> As for me, a working callback-lambda under SBCL (and later ECL) would be
> a MAJOR win. Even more so if I could avoid memory leaks by being able to
> delete callbacks when they're no longer needed.
I can't seem to find the lambda-callback patch but, IIRC, we reached the
conclusion that we could support this feature in a similar fashion to
the way we support foreign-funcall and long-long on some Lisps.
The first step to integrate this feature into CFFI is to have someone
actually use it, ...
Replicating CLisp's callback-lambda when porting Vasilis's original CLisp-only Cells-Gtk to UFFI was a huge pain. Maybe they would not mind ripping out all the nonsense I had to create (if ti is still there).
Well, come to think of it, I handle the Togl callbacks in Tcl/Tk by declaring fixed callbacks and having those call lambdas one can put in a slot of the CLOS class that wraps a C Togl widget. Hmmm. But I need portability: ACL, Lispworks, mebbe OpenMCL. Where would it run?
kt
maybe write some tests. I doubt the patch (wherever it
is) bitrotted much; can you apply it and/or let me know where it is? Let
us know if it works for you or if you need any help.
--
Luís Oliveira
luismbo (@) gmail (.) com
http://student.dei.uc.pt/~lmoliv/
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