From 18e9540ea3b92c5f1b16bff2329b7ab5d152a539 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Fri, 7 Oct 2011 19:30:44 +0000
Subject: [PATCH] Fix visibility of MIDI CC automation lanes (#4356).

git-svn-id: svn://localhost/ardour2/branches/3.0@10195 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 gtk2_ardour/axis_view.cc | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/gtk2_ardour/axis_view.cc b/gtk2_ardour/axis_view.cc
index 1144fb1e68..5e0a50fdf7 100644
--- a/gtk2_ardour/axis_view.cc
+++ b/gtk2_ardour/axis_view.cc
@@ -80,12 +80,9 @@ AxisView::marked_for_display () const
 bool
 AxisView::set_marked_for_display (bool yn)
 {
-	if (yn != marked_for_display()) {
-		if (yn) {
-			set_gui_property ("visible", true);
-		} else {
-			set_gui_property ("visible", false);
-		}
+	string const v = gui_property ("visible");
+	if (v == "" || yn != string_is_affirmative (v)) {
+		set_gui_property ("visible", yn);
 		return true; // things changed
 	}