From 3d0366d46b6c237e61c548a033b960ccc9daa7f6 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 17 Apr 2017 01:46:27 +0200
Subject: [PATCH] Send unmap event when removing a widget

This fixes a crash when hiding an ArdourCanvas Item VCA which
is about to display a tooltip.
---
 libs/gtkmm2ext/utils.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libs/gtkmm2ext/utils.cc b/libs/gtkmm2ext/utils.cc
index c18023e020..e16a9e251e 100644
--- a/libs/gtkmm2ext/utils.cc
+++ b/libs/gtkmm2ext/utils.cc
@@ -631,6 +631,7 @@ Gtkmm2ext::container_clear (Gtk::Container& c)
 {
         list<Gtk::Widget*> children = c.get_children();
         for (list<Gtk::Widget*>::iterator child = children.begin(); child != children.end(); ++child) {
+                (*child)->hide ();
                 c.remove (**child);
         }
 }