Re: [Caml-list] COM binding & CAMLIDL ?

[Dmitry Bely <dbely@mail.ru>]

Samuel Lacas <Samuel.Lacas@trusted-logic.fr> writes:

> Reading a recent thread on the list, I noticed that ocaml could be
> used with COM components on windows. As I currently intensively use
> the Python COM bindings with MS' text processor whose name I won't
> say, I wonder if I could use ocaml to the same end.

Probably yes, if you are going to use/create COM components with vtbl-style
interfaces. Support for IDispatch interfaces is very limited (see camlidl
manual).

> However, the release notes in the ocaml-win distribution states that
> the cygwin version lacks COM support,

In fact Cygwin gcc has all necessary COM libraries and camlidl can be
easily patched to support COM interfaces for Cygwin-build OCaml (I have
done that if you are interested).

> and the native win32 version
> partially implements the libraries, among which I find no COM nor IDL
> link. Does anyone on the list have more information ?

[ocaml\README.win32]

The native Win32 port has threads and COM support

[camlidl\readme]

In addition, Camlidl provides basic support for COM interfaces and
components under MS Windows.  It supports both using COM components
(usually written in C++ or C) from Caml programs, and packaging Caml
objects as COM components that can then be used from C++ or C.

[end of quote]

So yes, MSVC-compiled OCaml supports Camlidl and COM out-of-the-box.

Hope to hear from you soon,
Dmitry


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