using Gtk;

/*
valac sample.vala --pkg gtk+-2.0
*/

public class Main {

    private Button button;
    private Label  label;

    private void changeLabel() {
        label.set_text( "Clicked" );
    }
    
    public Main() {
            button = new Button();
            label  = new Label("Not Clicked");
            var window = new Window( WindowType.TOPLEVEL );
            var vbox = new VBox(true, 10);
            button.label = "Click Me!";
            button.clicked.connect( (source) => {
                changeLabel();
            });
            vbox.add( button );
            vbox.add( label );
            window.add( vbox );
            window.show_all();
    }

    public static int main( string[] args ) {
        Gtk.init ( ref args );
        new Main();
        Gtk.main();
        return 0;
    }



}