Index: libnotify/notification.c
===================================================================
--- libnotify/notification.c	(revision 3009)
+++ libnotify/notification.c	(working copy)
@@ -31,6 +31,7 @@
 # define HAVE_STATUS_ICON
 # include <gtk/gtkstatusicon.h>
 #endif
+#include <gdk/gdkx.h>
 
 #define CHECK_DBUS_VERSION(major, minor) \
 	(DBUS_MAJOR_VER > (major) || \
@@ -408,6 +409,13 @@
 	{
 		GdkRectangle rect;
 
+#if GTK_CHECK_VERSION(2,12,10)
+		{
+			guint32 xid = gtk_status_icon_get_x11_window_id(priv->status_icon);
+			notify_notification_set_hint_uint32(n, "window-xid", xid);			
+		}
+#endif
+
 		if (!gtk_status_icon_get_geometry(priv->status_icon, &screen,
 										  &rect, NULL))
 		{
@@ -1003,7 +1011,33 @@
 						g_strdup(key), hint_value);
 }
 
+
 /**
+ * notify_notification_set_hint_uint32:
+ * @notification: The notification.
+ * @key: The hint.
+ * @value: The hint's value.
+ *
+ * Sets a hint with an unsigned 32-bit integer value.
+ */
+void
+notify_notification_set_hint_uint32(NotifyNotification *notification,
+								   const gchar *key, guint value)
+{
+	GValue *hint_value;
+
+	g_return_if_fail(notification != NULL);
+	g_return_if_fail(NOTIFY_IS_NOTIFICATION(notification));
+	g_return_if_fail(key != NULL && *key != '\0');
+
+	hint_value = g_new0(GValue, 1);
+	g_value_init(hint_value, G_TYPE_UINT);
+	g_value_set_uint(hint_value, value);
+	g_hash_table_insert(notification->priv->hints,
+						g_strdup(key), hint_value);
+}
+
+/**
  * notify_notification_set_hint_double:
  * @notification: The notification.
  * @key: The hint.
Index: libnotify/notification.h
===================================================================
--- libnotify/notification.h	(revision 3009)
+++ libnotify/notification.h	(working copy)
@@ -128,6 +128,8 @@
 
 void notify_notification_set_hint_int32(NotifyNotification *notification,
 										const gchar *key, gint value);
+void notify_notification_set_hint_uint32(NotifyNotification *notification,
+										const gchar *key, guint value);
 
 void notify_notification_set_hint_double(NotifyNotification *notification,
 										 const gchar *key, gdouble value);