Exit using Sugar toolbar Stop Button

The activity process keep running even after closing the activity using the stop button on toolbar.
Confirmed using testing the activity from terminal using sugar-activity3

Main.py

@@ -237,11 +237,14 @@ def run(self):
             pygame.display.update()
 
     def handle_event(self):
-        for event in pygame.event.get(pygame.KEYDOWN):
-            tecla = event.key
-            if tecla == pygame.K_ESCAPE:
-                pygame.event.clear()
-                return self.selecciona_mensaje_salir()
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                self.estado = False
+            elif event.type == pygame.KEYDOWN:
+                tecla = event.key
+                if tecla == pygame.K_ESCAPE:
+                    pygame.event.clear()
+                    return self.selecciona_mensaje_salir()
 
     def pause_game(self):
         while self.mensaje.sprites():