do local object = fltk:Fl_Double_Window(166, 165, "My App");
    window = object;
    fltk:Fl_Return_Button(5, 130, 155, 30, "A return button");
    myOptions = fltk:Fl_Check_Browser(5, 5, 155, 70, "Some choices");
    myField = fltk:Fl_Input(5, 95, 155, 30);

    myOptions:add("Shower and shave") 
    myOptions:add("Breakfast") 
    myOptions:add("Watch TV") 
    myOptions:add("Go to work") 
    myOptions:add("Call the plumber")
    
    myField:callback(
      function(myField)
          fltk.fl_message("Changed the value to \"" .. myField:value() .. "\"")
    end)
  end
  window:show();
  Fl:run();