Re: [Vala] Gtk.CheckMenuItem activate signal is useless (maybe)

[Харин Роман <HarinRoman kranky-studio ru>]

Yu Feng пишет:
> On Sat, 2009-05-09 at 14:40 +0400, Харин Роман wrote:
> > so, its litttle code example:
> >
> > class MyApp : Window {
> >
> >   private Image main_img;
> >
> >   public MyApp() {
> >     ...
> >     item_viewbg = new CheckMenuItem.with_label("Показывать фон");
> >     item_viewbg.active = true;
> >     item_viewbg.activate.connect(onMenuBackImage);
> >    ...
> >   }
> >
> >   void onMenuBackImage(MenuItem menu) {
> >         main_img.visible = menu.active;
> >                              ^^^^^^
> main_img.visible = (menu as CheckMenuItem).active;

Thank. Is so obviously, my fail. I tried to modify gtk+-2.0.vapi (like
blow to snake from anoder end).

> Did you try the old signal connection syntax (using +=)?

Yes, this works too.

// item_viewbg.activate.connect(onMenuBackImage); // <<< can't compile

                                                  // this line
item_viewbg.activate += onMenuBackImage; // this line ok
void onMenuBackImage(CheckMenuItem menu) {
    main_img.visible = menu.active;
}

No, i don't try to use it because it is "old" syntax. hmmm. I can't
understand now: it is new syntax bug or this is undocumented feature?

> - Yu
> >   }
> >   ...
> > }
> >
> > MenuItem has no "active" property, but CheckMenuItem has one.
> > And i would like to write:
> >
> >   void onMenuBackImage(CheckMenuItem menu) {
> >         main_img.visible = menu.active;
> >   }
> >
> > but: Cannot convert from `MainWindow.onMenuBackImage' to
> > `Gtk.MenuItem.activate'
> >
> > ---
> > Харин Роман,
> > jabber:// harinr jabber ru
> >
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