From 9acc282f6501671e8b1a36357279c46777591f31 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Thu, 20 Oct 2016 10:21:44 -0400
Subject: MIDI port options now tracks dynamic port register/unregister

---
 gtk2_ardour/rc_option_editor.cc | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/rc_option_editor.cc b/gtk2_ardour/rc_option_editor.cc
index 74e38831a1..e8350b0167 100644
--- a/gtk2_ardour/rc_option_editor.cc
+++ b/gtk2_ardour/rc_option_editor.cc
@@ -1854,7 +1854,7 @@ private:
 };
 
 
-class MidiPortOptions : public OptionEditorBox
+class MidiPortOptions : public OptionEditorBox, public sigc::trackable
 {
   public:
 	MidiPortOptions() {
@@ -1879,8 +1879,16 @@ class MidiPortOptions : public OptionEditorBox
 
 	void parameter_changed (string const&) {}
 	void set_state_from_config() {}
+
 	void on_show () {
+		refill ();
+		AudioEngine::instance()->PortRegisteredOrUnregistered.connect (port_connection,
+		                                                               invalidator (*this),
+		                                                               boost::bind (&MidiPortOptions::refill, this),
+		                                                               gui_context());
+	}
 
+	void refill () {
 		if (refill_midi_ports (true, midi_input_view)) {
 			input_label.show ();
 		} else {
@@ -1894,6 +1902,7 @@ class MidiPortOptions : public OptionEditorBox
 	}
 
   private:
+	PBD::ScopedConnection port_connection;
 
 	/* MIDI port management */
 	struct MidiPortColumns : public Gtk::TreeModel::ColumnRecord {
-- 
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