From e203c34b09194bee6c8e5a448ef37f59884f82bf Mon Sep 17 00:00:00 2001
From: mpa <mpa@opencascade.com>
Date: Mon, 18 May 2015 17:57:20 +0300
Subject: [PATCH] INT PAL 0022812: TC6.4.0: prefernces work only for a new
 study (edited)

---
 src/SalomeApp/SalomeApp_Application.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/SalomeApp/SalomeApp_Application.cxx b/src/SalomeApp/SalomeApp_Application.cxx
index 04b1eb2cf..95465cd4d 100644
--- a/src/SalomeApp/SalomeApp_Application.cxx
+++ b/src/SalomeApp/SalomeApp_Application.cxx
@@ -1041,7 +1041,9 @@ void SalomeApp_Application::onLocalCheckIn()
 void SalomeApp_Application::onDockWindowVisibilityChanged( bool theIsVisible )
 {
   LightApp_Application::onDockWindowVisibilityChanged( theIsVisible );
-  QAction* send = (QAction*)sender();
+  QAction* send = ::qobject_cast<QAction*>( sender() );
+  if ( !send )
+    return;
   QString aWinName = send->data().toString();
   if ( theIsVisible && aWinName == "objectBrowser" )
     objectBrowserColumnsVisibility();
-- 
2.39.2