#include <gtkmm.h>
 
class MainWindow : public Gtk::Window
{
  private:
    Gtk::VBox *vbox;
    Gtk::HBox *hbox;
    Gtk::Entry *entry;
    Gtk::Button *button;
    Gtk::TextView *text_view;
 
  protected:
    void on_execute ()
    {
      std::string std_out;
 
      Glib::spawn_command_line_sync (entry->get_text (), &std_out, NULL, NULL);
      text_view->get_buffer ()->set_text (std_out);
    }
 
  public:
    MainWindow ()
    {
      this->set_default_size (300, 200);
      this->set_title ("gtk.developpez.com");
 
      vbox = new Gtk::VBox ();
      this->add (*vbox);
 
      hbox = new Gtk::HBox ();
      vbox->pack_start (*hbox, Gtk::PACK_SHRINK);
 
      entry = new Gtk::Entry ();
      hbox->pack_start (*entry);
 
      button = new Gtk::Button (Gtk::Stock::EXECUTE);
      hbox->pack_start (*button, Gtk::PACK_SHRINK);
      button->signal_clicked ().connect (sigc::mem_fun (*this,
                                                        &MainWindow::on_execute));
 
      text_view = new Gtk::TextView ();
      text_view->set_editable (false);
      text_view->set_cursor_visible (false);
      vbox->pack_start (*text_view);
    }
 
    ~MainWindow ()
    {
      delete vbox;
      delete hbox;
      delete entry;
      delete button;
      delete text_view;
    }
};
 
int main (int argc, char **argv)
{
  Gtk::Main kit(argc, argv);
  MainWindow win;
  win.show_all ();
  kit.run(win);
  return 0;
}