From 8c7fda11cf47cd8dd04c6eabffc437dd942403d5 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <carl@carlh.net>
Date: Wed, 20 Jul 2011 00:01:08 +0000
Subject: [PATCH] Don't pop up an empty menu over a patch change.

git-svn-id: svn://localhost/ardour2/branches/3.0@9909 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 gtk2_ardour/canvas_patch_change.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/canvas_patch_change.cc b/gtk2_ardour/canvas_patch_change.cc
index 930226565d..53bddbef40 100644
--- a/gtk2_ardour/canvas_patch_change.cc
+++ b/gtk2_ardour/canvas_patch_change.cc
@@ -153,7 +153,9 @@ CanvasPatchChange::on_event (GdkEvent* ev)
 				initialize_popup_menus();
 				_popup_initialized = true;
 			}
-			_popup.popup(ev->button.button, ev->button.time);
+			if (!_popup.items().empty()) {
+				_popup.popup(ev->button.button, ev->button.time);
+			}
 			return true;
 		}
 		break;