From e7e968722cd7914d3d9a50cb333c1894e91d457f Mon Sep 17 00:00:00 2001
From: enk <enk@opencascade.com>
Date: Mon, 25 Dec 2006 08:37:17 +0000
Subject: [PATCH] Fix for bug IPAL14059: SIGSEGV after clicking "Ok" button of
 "Change Clipping" dlg after presentation deletion.

---
 src/VISUGUI/VisuGUI_ClippingDlg.cxx | 21 ++++++++++++++++++++-
 src/VISUGUI/VisuGUI_ClippingDlg.h   |  3 +++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/VISUGUI/VisuGUI_ClippingDlg.cxx b/src/VISUGUI/VisuGUI_ClippingDlg.cxx
index 10d90290..cef3b80d 100644
--- a/src/VISUGUI/VisuGUI_ClippingDlg.cxx
+++ b/src/VISUGUI/VisuGUI_ClippingDlg.cxx
@@ -392,6 +392,7 @@ VisuGUI_ClippingDlg::VisuGUI_ClippingDlg (VisuGUI* theModule,
 VisuGUI_ClippingDlg::~VisuGUI_ClippingDlg()
 {
   // no need to delete child widgets, Qt does it all for us
+  SetPrs3d(NULL);
   std::for_each(myPlanes.begin(),myPlanes.end(),TSetVisiblity(false));
   VISU::RenderViewWindow(VISU::GetActiveViewWindow<SVTK_ViewWindow>(myVisuGUI));
 }
@@ -608,7 +609,9 @@ void VisuGUI_ClippingDlg::onSelectionChanged()
     PortableServer::ServantBase_var aServant = VISU::GetServant(anObject);
     if (!aServant.in()) return;
 
-    myPrs3d = dynamic_cast<VISU::Prs3d_i*>(aServant.in());
+    VISU::Prs3d_i* aPrs3d = dynamic_cast<VISU::Prs3d_i*>(aServant.in());
+    SetPrs3d(aPrs3d);
+
     if (myPrs3d) {
       std::for_each(myPlanes.begin(),myPlanes.end(),TSetVisiblity(false));
       myPlanes.clear();
@@ -685,6 +688,10 @@ void VisuGUI_ClippingDlg::onSelectPlane(int theIndex)
 //=================================================================================
 void VisuGUI_ClippingDlg::ClickOnNew()
 {
+  Handle(SALOME_InteractiveObject) anIO;
+  CORBA::Object_var anObject = VISU::GetSelectedObj(myVisuGUI, &anIO);
+  if (CORBA::is_nil(anObject)) return;
+
   SetCurrentPlaneParam();
   
   if (!myPrs3d)
@@ -1186,3 +1193,15 @@ void VisuGUI_ClippingDlg::keyPressEvent( QKeyEvent* e )
       ClickOnHelp();
     }
 }
+
+void VisuGUI_ClippingDlg::SetPrs3d(VISU::Prs3d_i* thePrs)
+{
+  if(thePrs != myPrs3d){
+    if(myPrs3d)
+      myPrs3d->Destroy();
+    if(thePrs)
+      thePrs->Register();
+    myPrs3d = thePrs;
+  } else 
+    return;
+}
diff --git a/src/VISUGUI/VisuGUI_ClippingDlg.h b/src/VISUGUI/VisuGUI_ClippingDlg.h
index be9dcb20..4d8c8977 100644
--- a/src/VISUGUI/VisuGUI_ClippingDlg.h
+++ b/src/VISUGUI/VisuGUI_ClippingDlg.h
@@ -136,6 +136,9 @@ public:
 
 private:
     void keyPressEvent( QKeyEvent* e );
+  
+    void SetPrs3d(VISU::Prs3d_i* thePrs);
+  
 
 private:
 
-- 
2.39.2