From adb4470564587543533f5ef7275b8efcab881e23 Mon Sep 17 00:00:00 2001
From: Lan Zagar <lan.zagar@gmail.com>
Date: Tue, 3 Jan 2017 13:57:16 +0100
Subject: [PATCH] Merge pull request #1825 from janezd/fix-listview-unselect

[FIX] Fix crash in listview if labels are changed before calling __setitem__
(cherry picked from commit 3ca970800e08169bc397bf02bce00d0b70a05730)
---
 Orange/widgets/gui.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Orange/widgets/gui.py b/Orange/widgets/gui.py
index 0d2e36198f9..23e59e12aa2 100644
--- a/Orange/widgets/gui.py
+++ b/Orange/widgets/gui.py
@@ -2049,7 +2049,10 @@ def item2name(self, item):
 
     def __setitem__(self, index, item):
         def unselect(i):
-            item = self.listBox.item(i)
+            try:
+                item = self.listBox.item(i)
+            except RuntimeError:  # Underlying C/C++ object has been deleted
+                item = None
             if item is None:
                 # Labels changed before clearing the selection: clear everything
                 self.listBox.selectionModel().clear()