Re: [Vala] Vapi delegate problems.

[Lewis Gunsch <lgunsch gmail com>]

That gives me the following error.

libzmq.vapi:80.34-80.41: error: The type name `GLib.Fun' could not be found
            public Msg.data(uint8[] data, GLib.Fun? ffn = null);

Although, I tried:

[CCode (cname = "zmq_free_fn", type = "void (*)(void *, void *)")]
public delegate void free_fn(void *data);

with the constructor:

[CCode (cname = "zmq_msg_init_data")]
public Msg.data(owned uint8[] data, free_fn?  ffn = null);

And it now compiles and runs. It seems to work properly now. I have the
hello world example working.

Although, in the constructor the data is type uint8[], and in it's free
function free_fn it's a void*. Is there any way to correct this?


Thanks,
~Lewis

On Wed, Apr 27, 2011 at 1:18 AM, Luca Bruno <lethalman88 gmail com> wrote:

> On Tue, Apr 26, 2011 at 03:50:39PM -0600, Lewis Gunsch wrote:
> > Hi,
> >
> > I am having trouble getting a delegate in a vapi to work correctly. My
> > original attempt (line 70 of the vapi) did not work because of how the
> > typedef is in the C header (it's not a function pointer), so instead of
> > using their typedef I used GLib.Func which matches the function
> signature.
> > This is suppose to be (void*)(void*, void*), but Vala creates it to be
> > (void*)(const void*, void*) and then produces an error. The method that
> > produces this error is
> >
> > ZMQ.MSG.Msg.data(uint8[] data, GLib.Func? ffn = null);
> >
> > and the corresponding C method is
> >
> > ZMQ_EXPORT int zmq_msg_init_data (zmq_msg_t *msg, void *data, size_t
> size,
> > zmq_free_fn *ffn, void *hint);
> >
> > The library I'm am trying to write the vapi for is ZeroMQ. Here is a link
> to
> > zmq.h.
> > https://github.com/zeromq/zeromq2-1/blob/v2.1.4/include/zmq.h
> >
> > You can see my attempt at the vapi below. My original delegate which I
> could
> > not get to work is on line 70.
> > https://github.com/lgunsch/zmq-vala/blob/msg_refactor/libzmq.vapi
> >
> > And my test is here:
> https://github.com/lgunsch/zmq-vala/blob/msg_refactor/examples/delegatetest.vala
> > Sorry if I have not explained myself in a clear manner. Help is much
> > appreciated!
>
> What happens if you add [CCode (type = "(void*)(void*, void*)")] to the
> parameter?
>
> --
> http://www.debian.org - The Universal Operating System
>
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