From 0812f3bac19368cee5e2af04a93e50dbc640f9c5 Mon Sep 17 00:00:00 2001
From: Tim Mayberry <mojofunk@gmail.com>
Date: Sat, 13 Feb 2016 09:28:33 +1000
Subject: [PATCH] Hide "Use Buffered I/O" button when switching to backend with
 no control

Which in this case means the JACK backend where the server is already running.
---
 gtk2_ardour/engine_dialog.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtk2_ardour/engine_dialog.cc b/gtk2_ardour/engine_dialog.cc
index 23c2a72396..762d1620d5 100644
--- a/gtk2_ardour/engine_dialog.cc
+++ b/gtk2_ardour/engine_dialog.cc
@@ -880,6 +880,8 @@ EngineControl::update_sensitivity ()
 	} else {
 		update_devices_button.set_sensitive(false);
 		update_devices_button.hide();
+		use_buffered_io_button.set_sensitive(false);
+		use_buffered_io_button.hide();
 		start_stop_button.set_sensitive(false);
 		start_stop_button.hide();
 	}