function create_check_buttons ()
{
  local	box1, box2, separator, button;

  win_check_buttons = new (GtkWindow);
  win_check_buttons.signal ("destroy", #win_check_buttons = nil);
  win_check_buttons.title = "GtkCheckButton";
  win_check_buttons.border_width = 0;
  
  box1 = new (GtkVBox);
  win_check_buttons.add (box1);
  
  box2 = new (GtkVBox);
  box2.border_width = 10;
  box2.spacing = 10;
  box1.pack_start (box2, TRUE, TRUE, 0);
  
  button = gtk_check_button_new_with_label("button1");
  box2.pack_start (button, TRUE, TRUE, 0);
  
  button = gtk_check_button_new_with_label("button2");
  box2.pack_start (button, TRUE, TRUE, 0);

  button = gtk_check_button_new_with_label("button3");
  box2.pack_start (button, TRUE, TRUE, 0);
  
  separator = new (GtkHSeparator);
  box1.pack_start (separator, FALSE, TRUE, 0);
  
  box2 = new (GtkVBox);
  box2.border_width = 10;
  box1.pack_start (box2, FALSE, TRUE, 0);
  
  button = new (GtkButton);
  button.label = "close";
  button.signal ("clicked", `(@win_check_buttons).destroy());
  box2.pack_start (button, TRUE, TRUE, 0);
  button.can_default = TRUE;
  button.grab_default();

  win_check_buttons.show_all();
  win_check_buttons;
}

function main ()
{
  local window, win_check_buttons;
  TRUE=1;
  FALSE=0;
  window = create_check_buttons ();
  window.signal ("destroy", #exit_program(0));
  init_ipc("check_buttons", "check_buttonsq");
  gtk_main ();
}