From 1ebf35f13719df3f0565d75304fe778f443d8665 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 27 Apr 2017 21:10:37 +0200
Subject: [PATCH] Allow to hide engine dialog w/o unloading session.

---
 gtk2_ardour/ardour_ui.cc | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index e8c794f85e..32a6d9f1f6 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -5397,10 +5397,16 @@ ARDOUR_UI::do_audio_midi_setup (uint32_t desired_sample_rate)
 
 	while (true) {
 		int response = audio_midi_setup->run();
-		printf("RESPONSE %d\n", response);
 		switch (response) {
 		case Gtk::RESPONSE_DELETE_EVENT:
-			return -1;
+			// after latency callibration engine may run,
+			// Running() signal was emitted, but dialog will not
+			// have emitted a response. The user needs to close
+			// the dialog -> Gtk::RESPONSE_DELETE_EVENT
+			if (!AudioEngine::instance()->running()) {
+				return -1;
+			}
+			// fall through
 		default:
 			if (!AudioEngine::instance()->running()) {
 				continue;