patch for install error on Linux

[modules/hydro.git] / src / HYDROGUI / HYDROGUI_CalculationOp.cxx

diff --git a/src/HYDROGUI/HYDROGUI_CalculationOp.cxx b/src/HYDROGUI/HYDROGUI_CalculationOp.cxx
index 734964c9fa2199390477d3713b69ac47ae955ea6..6200d72cb53b03257694069177c91c9365a76cf9 100644 (file)
--- a/src/HYDROGUI/HYDROGUI_CalculationOp.cxx
+++ b/src/HYDROGUI/HYDROGUI_CalculationOp.cxx
@@ -1238,7 +1238,8 @@ void HYDROGUI_CalculationOp::createPreview( const bool theLandCoverMap )
   }
 
   // Get a boundary polyline if any
-  aSeq.Append( myEditedObject->GetBoundaryPolyline() );
+  if (Handle(HYDROData_PolylineXY) aBPoly = myEditedObject->GetBoundaryPolyline())
+    aSeq.Append( aBPoly );
 
   module()->removeViewShapes( HYDROGUI_Module::VMR_PreviewCaseZones );
 
@@ -1275,16 +1276,19 @@ void HYDROGUI_CalculationOp::createPreview( const bool theLandCoverMap )
       HYDROData_SequenceOfObjects::Iterator anIter( aSeq );
       for ( ; anIter.More(); anIter.Next() )
       {
-        setObjectVisibility( anIter.Value(), true );
+        const Handle_HYDROData_Entity& ent = anIter.Value();
+        if (!ent.IsNull())
+          setObjectVisibility( ent, true );
       }
 
       //Process the draw events for viewer
       QApplication::processEvents( QEventLoop::ExcludeUserInputEvents );
-      if ( OCCViewer_ViewWindow* vw = (OCCViewer_ViewWindow*)myPreviewViewManager->getActiveView() )
-        vw->onTopView();
     }
 
     module()->update( UF_OCCViewer | UF_FitAll );
+
+    if ( OCCViewer_ViewWindow* vw = (OCCViewer_ViewWindow*)myPreviewViewManager->getActiveView() )
+      vw->onTopView();
   }
 }