]> > I used Camlidl to help me interface C functions and datatypes with OCaml > under Unix but now I would like to interface some existing (written by > others) C++ classes and methods with OCaml. I am not a C++ programmer > and I'm a little bit lost. Can Camlidl be of some help ? Should I write > a C layer between C++ and OCaml ? This is a reasonable option. Once you have a pure C API for the C++ code, you can use CamlIDL as usual. CamlIDL itself doesn't have any kind of direct support for C++. Well, it supports COM interfaces, which correspond to a very small subset of C++ classes, but I doubt this can help you, unless the C++ code of interest is already structured as COM interfaces. The other alternative is to hand-write Caml wrappers that call directly the C++ code, without going through C. I believe you can write those wrappers in C++ if you're careful to declare the entry points (the functions that Caml will call) "extern "C"". Some of the features of C++ might be used to wrap the Caml runtime API (the functions and macros provided by <caml/mlvalues.h>, etc) in a more C++-friendly style, see e.g. http://caml.inria.fr/archives/199704/msg00029.html Bon courage... - Xavier Leroy ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners