From 56c99a43d2701a72506b8f5cbbed115a3ea65969 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Fri, 1 Nov 2024 17:43:25 -0600
Subject: [PATCH] remove any existing data display from a MidiView when
 ::begin_write() happens

---
 gtk2_ardour/midi_view.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtk2_ardour/midi_view.cc b/gtk2_ardour/midi_view.cc
index 4a199f3365..31951c6e14 100644
--- a/gtk2_ardour/midi_view.cc
+++ b/gtk2_ardour/midi_view.cc
@@ -1573,6 +1573,8 @@ MidiView::begin_write()
 	   XXX this should not happen.
 	*/
 
+	clear_events ();
+
 	if (_active_notes) {
 		for (unsigned i = 0; i < 128; ++i) {
 			delete _active_notes[i];