[gtk+] treeview: set GDK_SMOOTH_SCROLL_MASK

[Matthias Clasen <matthiasc src gnome org>]

commit faa1d9b8f8ff132aab69ba12c9b6081eb3b5d1ec
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Jan 24 12:18:27 2012 +0100

    treeview: set GDK_SMOOTH_SCROLL_MASK
    
    This is so smooth scroll events are send/handled by the
    parent GtkScrolledWindow if any.

 gtk/gtktreeview.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index d1a4bff..0f47c07 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -2237,6 +2237,7 @@ gtk_tree_view_realize (GtkWidget *widget)
   attributes.height = allocation.height;
   attributes.event_mask = (GDK_EXPOSURE_MASK |
                            GDK_SCROLL_MASK |
+                           GDK_SMOOTH_SCROLL_MASK |
                            GDK_POINTER_MOTION_MASK |
                            GDK_ENTER_NOTIFY_MASK |
                            GDK_LEAVE_NOTIFY_MASK |