[pitivi] viewer: Port to the new Gdk.Window API

[Jean-FranÃois Fortin Tam <jfft src gnome org>]

commit 2c2c24ab51fd5d9cc1e632a2f2319acb417f100f
Author: Thibault Saunier <thibault saunier collabora com>
Date:   Tue Jul 3 16:06:41 2012 -0400

    viewer: Port to the new Gdk.Window API

 pitivi/viewer.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pitivi/viewer.py b/pitivi/viewer.py
index 0f3a827..b88008b 100644
--- a/pitivi/viewer.py
+++ b/pitivi/viewer.py
@@ -864,9 +864,9 @@ class ViewerWidget(gtk.DrawingArea, Loggable):
         """
         gtk.DrawingArea.do_realize(self)
         if platform.system() == 'Windows':
-            self.window_xid = self.window.handle
+            self.window_xid = self.props.window.handle
         else:
-            self.window_xid = self.window.xid
+            self.window_xid = self.get_property('window').get_xid()
 
     def button_release_event(self, widget, event):
         if event.button == 1: