#!/usr/bin/env vala --pkg gtk+-3.0

using Gtk;

public static int main (string[] args) {
  Gtk.init (ref args);
  
  Window window = new Window(WindowType.TOPLEVEL);
  window.set_size_request(100, 100);
  window.destroy.connect(main_quit);
  
  Button button = new Button.with_label("Push me");
  button.clicked.connect(() => {
    MessageDialog msg = new MessageDialog(window, DialogFlags.MODAL,
      MessageType.INFO, ButtonsType.OK, "Some message");
    msg.run();
    msg.close();
  });
  
  window.add(button);
  window.show_all();
  
  Gtk.main();
  return 0;
}