From 319c1131ad37a5f1e8964171df2f46bd4d7a9959 Mon Sep 17 00:00:00 2001
From: rnv <rnv@opencascade.com>
Date: Fri, 3 Oct 2008 06:57:48 +0000
Subject: [PATCH] Fix fo IPAL20415 (Error on mouse picking with Shift in 3D
 viewer if any dialog box is opened)

---
 src/OBJECT/SMESH_DeviceActor.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/OBJECT/SMESH_DeviceActor.cxx b/src/OBJECT/SMESH_DeviceActor.cxx
index 257fcd9f8..cf7971f91 100644
--- a/src/OBJECT/SMESH_DeviceActor.cxx
+++ b/src/OBJECT/SMESH_DeviceActor.cxx
@@ -721,7 +721,7 @@ SMESH_DeviceActor
 {
   vtkDataSet* aDataSet = myMergeFilter->GetOutput();
   vtkIdType anID = myVisualObj->GetNodeVTKId(theObjID);
-  vtkFloatingPointType* aCoord = aDataSet->GetPoint(anID);
+  vtkFloatingPointType* aCoord = (anID >=0) ? aDataSet->GetPoint(anID) : NULL;
   if(MYDEBUG) MESSAGE("GetNodeCoord - theObjID = "<<theObjID<<"; anID = "<<anID);
   return aCoord;
 }
@@ -757,7 +757,7 @@ SMESH_DeviceActor
 {
   vtkDataSet* aDataSet = myVisualObj->GetUnstructuredGrid();
   vtkIdType aGridID = myVisualObj->GetElemVTKId(theObjID);
-  vtkCell* aCell = aDataSet->GetCell(aGridID);
+  vtkCell* aCell = (aGridID >= 0 ) ? aDataSet->GetCell(aGridID) : NULL;
   if(MYDEBUG) 
     MESSAGE("GetElemCell - theObjID = "<<theObjID<<"; aGridID = "<<aGridID);
   return aCell;
-- 
2.30.2