added first needed functions

gui_handler.py

@@ -1,2 +1,13 @@
-# -*- coding: utf-8 -*-
-
+class window:
+    def __init__(self):
+        pass
+    def __del__(self):
+        pass
+    def set_title(self, title):
+        pass
+    def get_geometry(self):
+        return None
+    def set_geometry(self, geometry):
+        pass
+    def update_menus(self, menu_dict):
+        pass