[gnome-boxes] display: fix toolbar not showing up

[Marc-Andre Lureau <malureau src gnome org>]

commit bb9df65796564f335b4cfb05c01140781f426d2a
Author: Marc-Andrà Lureau <marcandre lureau gmail com>
Date:   Tue May 22 18:41:16 2012 +0200

    display: fix toolbar not showing up
    
    We need to filter out private flags.
    https://bugzilla.gnome.org/show_bug.cgi?id=676222

 src/display-page.vala |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/display-page.vala b/src/display-page.vala
index 9f60d92..987e2c3 100644
--- a/src/display-page.vala
+++ b/src/display-page.vala
@@ -84,10 +84,9 @@ private class Boxes.DisplayPage: GLib.Object {
         event_box.event.connect ((event) => {
             if (app.fullscreen && event.type == EventType.MOTION_NOTIFY) {
                 var y = event.motion.y;
-
                 if (y <= 0) {
                     toolbar_event_stop ();
-                    if (event.motion.state == 0)
+                    if ((event.motion.state & ModifierType.MODIFIER_MASK) == 0)
                         set_overlay_toolbar_visible (true);
                 } else if (y > 5 && toolbar_hide_id == 0) {
                     toolbar_event_stop ();