From 32f2a1beb722827ba65c8d878772b055a8253804 Mon Sep 17 00:00:00 2001
From: Jean-Christophe Fillion-Robin <jchris.fillionr@kitware.com>
Date: Mon, 11 May 2015 22:15:34 -0400
Subject: [PATCH] Prevent already destroyed widget exception occurring on
 Slicer exit

This commit avoid the exception reported below from happening when
exiting Slicer:

Exception ValueError: "Trying to call 'deleteLater' on a destroyed qMRMLNodeComboBox object" in <bound method FilterParameters.__del__ of <SimpleFilters.FilterParameters object at 0x5a13390>> ignored

It is not required to explicitly delete the widgets associated with the
last shown filter. The associated widgets have a parent and will be
deleted by the application.
---
 SimpleFilters/SimpleFilters.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SimpleFilters/SimpleFilters.py b/SimpleFilters/SimpleFilters.py
index 71a8aa7..281b28d 100644
--- a/SimpleFilters/SimpleFilters.py
+++ b/SimpleFilters/SimpleFilters.py
@@ -541,7 +541,7 @@ def __init__(self, parent=None):
     self.outputLabelMapBox = None
 
   def __del__(self):
-    self.destroy()
+    self.widgets = []
 
   def BeautifyCamelCase(self, str):
     return self.reCamelCase.sub(r' \1',str)