[gtk+] Don't create GdkWindows with NULL parents

[Alexander Larsson <alexl src gnome org>]

commit f9d77959a4518699a96b3c85ddc18d0ff01aeac5
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Sep 27 13:46:26 2012 +0200

    Don't create GdkWindows with NULL parents
    
    This is not multi-display safe, you always need to pick the right
    parent based on which screen your widget is at.

 gtk/gtktexthandle.c |    3 ++-
 gtk/gtktreeview.c   |    2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktexthandle.c b/gtk/gtktexthandle.c
index 00f43f8..3738d02 100644
--- a/gtk/gtktexthandle.c
+++ b/gtk/gtktexthandle.c
@@ -195,7 +195,8 @@ _gtk_text_handle_create_window (GtkTextHandle *handle)
       mask |= GDK_WA_VISUAL;
     }
 
-  window = gdk_window_new (NULL, &attributes, mask);
+  window = gdk_window_new (gtk_widget_get_root_window (priv->parent),
+			   &attributes, mask);
   gdk_window_set_user_data (window, priv->parent);
   gdk_window_set_background_rgba (window, &bg);
 
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index 686310c..263fe59 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -3923,7 +3923,7 @@ gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
           attributes.y = y;
 	  attributes.width = width;
 	  attributes.height = height;
-	  tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
+	  tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget), &attributes, attributes_mask);
 	  gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
 
 	  mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);