[gtk+] combobox: Make scrolling work again

[Matthias Clasen <matthiasc src gnome org>]

commit d7cf9d7b84d3e9188baf6637809b4bb61a48453c
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Mar 19 07:06:04 2012 -0400

    combobox: Make scrolling work again
    
    Select for scroll events, making it possible to use a scroll
    wheel to change the combobox.

 gtk/gtkcombobox.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
index 6cbcb39..53fe1b1 100644
--- a/gtk/gtkcombobox.c
+++ b/gtk/gtkcombobox.c
@@ -3133,6 +3133,7 @@ gtk_combo_box_menu_setup (GtkComboBox *combo_box,
 
       priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
       gtk_container_add (GTK_CONTAINER (priv->box), priv->arrow);
+      gtk_widget_add_events (priv->button, GDK_SCROLL_MASK);
 
       gtk_widget_show_all (priv->button);
     }
@@ -3149,6 +3150,7 @@ gtk_combo_box_menu_setup (GtkComboBox *combo_box,
 
       priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
       gtk_container_add (GTK_CONTAINER (priv->button), priv->arrow);
+      gtk_widget_add_events (priv->button, GDK_SCROLL_MASK);
       gtk_widget_show_all (priv->button);
     }