Added the close handler

docs/examples/lib/gui-pyglet.py

@@ -18,6 +18,10 b" label = pyglet.text.Label('Hello, world',"
                           x=window.width//2, y=window.height//2,
                           anchor_x='center', anchor_y='center')
 @window.event
+def on_close():
+    window.close()
+
[e-mail]
 def on_draw():
     window.clear()
     label.draw()