widget
{
   type: "window";
   name: "main-window";
   requested-width: 320;
   requested-height: 240;
   title: "Hello World!";
}

widget
{
  type: "button";                                                               
  name: "hello-button";                                                         
  parent: "main-window";                                                        
  label: "Hello World!";
}