Re: Calling a module with a gpointer to data.

[Tristan Van Berkom <vantr touchtunes com>]

void func(void) {
        int var = 0; // var is on the stack and will dissapear after the scope
of "func"
        int *pvar = NULL;

        if ((pvar = malloc(sizeof(int))) == NULL) {
                /* bla bla */
        }

        *pvar = var; // pvar points to memory allocated on the "heap" and will
not dissapear after "func"
}


Cheers


Jim Parker wrote:
> Ok here is the code.
>
> I did not understand your comment about the stack versus the heap.
>
> Thanks for your help
>
> cheers
> Jim Parker
>
> On Mon, 29 Jul 2002, Harring Figueiredo wrote:
> > Date: Mon, 29 Jul 2002 20:56:12 -0700 (PDT)
> > To: hopeye cfl rr com, GTK+ mailing list <gtk-app-devel-list gnome org>
> > From: Harring Figueiredo <harringf yahoo com>
> > Sender: gtk-app-devel-list-admin gnome org
> > Subject: Re: Calling a module with a gpointer to data.
> >
> >
> > Could you provide the code ?
> >
> >  It seems - from the description -that you are passing a "string" greated
> > on
> > the stack, and not on the heap.
> >
> > Harring
> >
> > --- Jim Parker <hopeye cfl rr com> wrote:
> > > G'Day !
> > >
> > > My application uses plug-ins to extend the functionality.  When I load
> > a
> > > plug-in I build a menu structure in the normal way.  But when I attach
> > a
> > > callback to the menu.  The data pointer seems to be corrupt.
> > >
> > > Currently I am just passing a text string.  But when I call the
> > function it
> > > does not print properly (garbage characters).  It works great for the
> > menu
> > > items that were created in the main program.
> > >
> > > Do I need to do something differently ?
> > >
> > > cheers,
> > > Jim Parker
> > >
> > > _______________________________________________
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> > > gtk-app-devel-list gnome org
> > > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
> >
> >
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