[Vala] Problem to handle shift key

[Raum <raum no-log org>]

Hello,

I've got a new problem :)  This code works on windows but not on linux 
and I don't understand why ?!?

--------- CODE  gtk_test.vala -----------
public class Application   {
    public Gtk.Window window;
    public Application () {
        window = new Gtk.Window();
        // Prepare Gtk.Window:
        window.title = "test";
        window.window_position = Gtk.WindowPosition.CENTER;
        window.destroy.connect (Gtk.main_quit);
        window.set_default_size (350, 70);

        window.add_events(Gdk.EventMask.KEY_RELEASE_MASK);
        window.add_events(Gdk.EventMask.KEY_PRESS_MASK);
        window.key_release_event.connect(on_key_press);
        window.key_press_event.connect(on_key_press);
    }

    public  bool on_key_press (Gdk.EventKey event) {
        stdout.printf ("state : %d / shift modifier should be : %d\n", 
event.state, Gdk.ModifierType.SHIFT_MASK);
        return true;
    }

    public static int main (string[] args) {
        Gtk.init (ref args);

        Application app = new Application ();
        app.window.show_all ();
        Gtk.main ();
        return 0;
    }
}
---------------------------------------------
// Ubuntu 11.04

# valac --pkg gtk+-3.0 gtk_test.vala
# ./gtk_test
state : 0 / shift modifier should be : 1   // I've pressed "shift" I 
should see "1 / 1" and not "0 / 1"
state : 1 / shift modifier should be : 1 // I've released "shift", I see 
"1/1", it's ok

----------------------------------------------

I didn't compile this code on Windows/MingW but I've a similar code 
which working...

Where am I wrong ?

Thanks

Regards

Raum