{
GtkMenuButtonPrivate *priv = menu_button->priv;
GtkWidget *widget = GTK_WIDGET (menu_button);
+ GtkWidget *toplevel;
GtkRequisition menu_req;
GtkTextDirection direction;
GdkRectangle monitor;
GtkAllocation allocation, arrow_allocation;
GtkAlign align;
+ /* In the common case the menu button is showing a dropdown menu, set the
+ * corresponding type hint on the toplevel, so the WM can omit the top side
+ * of the shadows.
+ */
+ if (priv->arrow_type == GTK_ARROW_DOWN)
+ {
+ toplevel = gtk_widget_get_toplevel (GTK_WIDGET (priv->popup));
+ gtk_window_set_type_hint (GTK_WINDOW (toplevel), GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU);
+ }
+
gtk_widget_get_preferred_size (GTK_WIDGET (priv->popup),
&menu_req, NULL);