From 2cbc4d51fcbda28f4dddf153e4d91c9a8b35988e Mon Sep 17 00:00:00 2001
From: isn <isn@opencascade.com>
Date: Thu, 21 Feb 2019 14:40:53 +0300
Subject: [PATCH] crash when switching between modules (HYDRO/PARAVIS/MESH)

---
 src/LightApp/LightApp_Application.cxx | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/LightApp/LightApp_Application.cxx b/src/LightApp/LightApp_Application.cxx
index 128df3e64..3654493e2 100644
--- a/src/LightApp/LightApp_Application.cxx
+++ b/src/LightApp/LightApp_Application.cxx
@@ -4134,15 +4134,22 @@ void LightApp_Application::updateWindows()
       getWindow( it.key() );
   }
 
+  QList<int> toRemove;
   for ( WinMap::ConstIterator it = myWin.begin(); it != myWin.end(); ++it )
   {
     QWidget* wid = it.value();
     if ( winMap.contains( it.key() ) )
       wid->setVisible( true );
     else
-      delete wid;
+    {
+      wid->deleteLater();
+      toRemove.append(it.key());
+    }
   }
 
+  foreach(int k, toRemove) 
+    myWin.remove(k);
+
   loadDockWindowsState();
 }
 
-- 
2.39.2