From: "Angela Zhu" <angela22.zhu@gmail.com>
To: "Julien Moutinho" <julien.moutinho@gmail.com>, caml-list@inria.fr
Subject: Re: [Caml-list] problem with gbutton
Date: Fri, 2 Nov 2007 23:17:12 -0500 [thread overview]
Message-ID: <f82e818a0711022117r248c0473sa9589824be4abeaa@mail.gmail.com> (raw)
In-Reply-To: <20071103040241.GA26778@localhost>
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It works.
Thanks!
-Angela
On 11/2/07, Julien Moutinho <julien.moutinho@gmail.com> wrote:
>
> On Fri, Nov 02, 2007 at 10:20:24PM -0500, Angela Zhu wrote:
> > I also want to add
> >
> > GMain.Idle.add ~callback:(fun () -> true);
> >
> > But I keep getting:
> >
> > ***********
> > Expecting function has type ?prio:int -> (unit -> bool) -> Glib.Idle.id
> > This argument cannot be applied with label ~callback
> >
> > Any idea?
> As said by the error message, the signature of GMain.Idle.add is:
> ?prio:int -> (* an optional argument: the priority *)
> (unit -> bool) -> (* an anonymous argument: the callback *)
> Glib.Idle.id (* the returned value: an identifier *)
> Here no argument of GMain.Idle.add has a label named "callback",
> hence the error you get.
>
> Instead do the following:
> let id = GMain.Idle.add (fun _ -> true) in
>
> Also, there is a manual chapter on labels:
> http://caml.inria.fr/pub/docs/manual-ocaml/manual006.html
>
> And by the way, do not forget that there is a mailing list
> dedicated to LablGTK:
> http://yquem.inria.fr/cgi-bin/mailman/listinfo/lablgtk
>
> HTH.
>
>
--
Regards,
Angela Zhu
------------------------------------------
Dept. of CS, Rice University
http://www.cs.rice.edu/~yz2/
------------------------------------------
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prev parent reply other threads:[~2007-11-03 4:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-02 22:48 Angela Zhu
2007-11-02 23:47 ` [Caml-list] " Julien Moutinho
2007-11-03 3:20 ` Angela Zhu
2007-11-03 4:02 ` Julien Moutinho
2007-11-03 4:17 ` Angela Zhu [this message]
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