Index: gtkcombobox.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkcombobox.c,v
retrieving revision 1.185
diff -u -p -r1.185 gtkcombobox.c
--- gtkcombobox.c	12 Oct 2006 13:48:07 -0000	1.185
+++ gtkcombobox.c	18 Oct 2006 12:07:43 -0000
@@ -756,6 +756,25 @@ gtk_combo_box_class_init (GtkComboBoxCla
                                                                  FALSE,
                                                                  GTK_PARAM_READABLE));
 
+  /**
+   * GtkComboBox:arrow-size:
+   *
+   * Sets the minimum size of the arrow in the combo box.  Note
+   * that the arrow size is coupled to the font size, so in case
+   * a larger font is used, the arrow will be larger than set
+   * by arrow size.
+   *
+   * Since: 2.12
+   */
+  gtk_widget_class_install_style_property (widget_class,
+					   g_param_spec_int ("arrow-size",
+							     P_("Arrow Size"),
+							     P_("The minimum size of the arrow in the combo box"),
+							     0,
+							     G_MAXINT,
+							     15,
+							     GTK_PARAM_READABLE));
+
   g_type_class_add_private (object_class, sizeof (GtkComboBoxPrivate));
 }
 
@@ -1897,6 +1916,8 @@ gtk_combo_box_size_request (GtkWidget   
 {
   gint width, height;
   gint focus_width, focus_pad;
+  gint font_size;
+  gint arrow_size;
   GtkRequisition bin_req;
 
   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
@@ -1910,7 +1931,14 @@ gtk_combo_box_size_request (GtkWidget   
   gtk_widget_style_get (GTK_WIDGET (widget),
 			"focus-line-width", &focus_width,
 			"focus-padding", &focus_pad,
+			"arrow-size", &arrow_size,
 			NULL);
+
+  font_size = (double)pango_font_description_get_size (GTK_BIN (widget)->child->style->font_desc) / (double)PANGO_SCALE;
+
+  arrow_size = MAX (arrow_size, font_size);
+
+  gtk_widget_set_size_request (combo_box->priv->arrow, arrow_size, arrow_size);
 
   if (!combo_box->priv->tree_view)
     {
