diff --git a/gtk/gtkbin.c b/gtk/gtkbin.c
index e8138137cc..812f2df6da 100644
--- a/gtk/gtkbin.c
+++ b/gtk/gtkbin.c
@@ -21,11 +21,12 @@
  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  * file for a list of people on the GTK+ Team.  See the ChangeLog
  * files for a list of changes.  These files are distributed with
- * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  */
 
 #include "config.h"
 #include "gtkbin.h"
+#include "gtkextendedlayout.h"
 #include "gtkintl.h"
 #include "gtkalias.h"
 
@@ -39,8 +40,12 @@ static void gtk_bin_forall      (GtkContainer   *container,
 				 gpointer        callback_data);
 static GType gtk_bin_child_type (GtkContainer   *container);
 
+static void gtk_bin_extended_layout_interface_init (GtkExtendedLayoutIface *iface);
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkBin, gtk_bin, GTK_TYPE_CONTAINER,
+                                  G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
+						         gtk_bin_extended_layout_interface_init))
 
-G_DEFINE_ABSTRACT_TYPE (GtkBin, gtk_bin, GTK_TYPE_CONTAINER)
 
 static void
 gtk_bin_class_init (GtkBinClass *class)
@@ -146,5 +151,54 @@ gtk_bin_get_child (GtkBin *bin)
   return bin->child;
 }
 
+static void
+gtk_bin_extended_layout_get_desired_size (GtkExtendedLayout *layout,
+                                          GtkRequisition    *minimum_size,
+                                          GtkRequisition    *natural_size)
+{
+  GtkBin *bin = GTK_BIN (layout);
+
+  g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
+
+  gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (bin->child),
+                                        minimum_size, natural_size);
+}
+
+static void
+gtk_bin_extended_layout_get_width_for_height (GtkExtendedLayout *layout,
+                                              gint               height,
+                                              gint              *minimum_width,
+                                              gint              *natural_width)
+{
+  GtkBin *bin = GTK_BIN (layout);
+
+  g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
+
+  gtk_extended_layout_get_width_for_height (GTK_EXTENDED_LAYOUT (bin->child),
+                                            height, minimum_width, natural_width);
+}
+
+static void
+gtk_bin_extended_layout_get_height_for_width (GtkExtendedLayout *layout,
+                                              gint               width,
+                                              gint              *minimum_height,
+                                              gint               natural_height)
+{
+  GtkBin *bin = GTK_BIN (layout);
+
+  g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
+
+  gtk_extended_layout_get_height_for_width (GTK_EXTENDED_LAYOUT (bin->child),
+                                            width, minimum_height, natural_height);
+}
+
+static void
+gtk_bin_extended_layout_interface_init (GtkExtendedLayoutIface *iface)
+{
+  iface->get_desired_size = gtk_bin_extended_layout_get_desired_size;
+  iface->get_height_for_width = gtk_bin_extended_layout_get_height_for_width;
+  iface->get_width_for_height = gtk_bin_extended_layout_get_width_for_height;
+}
+
 #define __GTK_BIN_C__
 #include "gtkaliasdef.c"