Error correction

diff --git a/bbtk/src/bbmaracasvisuViewerNV.cxx b/bbtk/src/bbmaracasvisuViewerNV.cxx
index e1c6bb5d75e49ce6969222a244a004756abd59ec..8c034d82d46b26bf2410e0ef857e3b374f2fc0b0 100644 (file)
--- a/bbtk/src/bbmaracasvisuViewerNV.cxx
+++ b/bbtk/src/bbmaracasvisuViewerNV.cxx
@@ -55,29 +55,32 @@ BBTK_BLACK_BOX_IMPLEMENTATION(ViewerNV,bbtk::WxBlackBox);
 //-------------------------------------------------------------
 void ViewerNV::Process()
 {
-       point.clear();
-       point.push_back((int)mwxwidget->GetX());
-       point.push_back((int)mwxwidget->GetY());
-       point.push_back((int)mwxwidget->GetZ());
-       bbSetOutputPoint(point);
-
-//    WxBlackBox::Process(); 
-       mwxwidget->SetImage( bbGetInputIn() );
-       wxVtkBaseView *wvbv1 = mwxwidget->GetwxVtkBaseView(1);
-       wxVtkBaseView *wvbv2 = mwxwidget->GetwxVtkBaseView(2);
-       wxVtkBaseView *wvbv3 = mwxwidget->GetwxVtkBaseView(3);
-       wxVtkBaseView *wvbv4 = mwxwidget->GetwxVtkBaseView(4);
-
-       //wxwidget->RefreshView();
-
-       bbSetOutputwxVtkBaseView1( wvbv1 );
-       bbSetOutputwxVtkBaseView2( wvbv2 );
-       bbSetOutputwxVtkBaseView3( wvbv3 );
-       bbSetOutputwxVtkBaseView4( wvbv4 );
-       if (wvbv1!=NULL) { bbSetOutputRenderer1( wvbv1->GetRenderer() ); }
-       if (wvbv2!=NULL) { bbSetOutputRenderer2( wvbv2->GetRenderer() ); }
-       if (wvbv3!=NULL) { bbSetOutputRenderer3( wvbv3->GetRenderer() ); }
-       if (wvbv4!=NULL) { bbSetOutputRenderer4( wvbv4->GetRenderer() ); }
+       if (mwxwidget != NULL)
+       {
+               point.clear();
+               point.push_back((int)mwxwidget->GetX());
+               point.push_back((int)mwxwidget->GetY());
+               point.push_back((int)mwxwidget->GetZ());
+               bbSetOutputPoint(point);
+
+       //    WxBlackBox::Process(); 
+               mwxwidget->SetImage( bbGetInputIn() );
+               wxVtkBaseView *wvbv1 = mwxwidget->GetwxVtkBaseView(1);
+               wxVtkBaseView *wvbv2 = mwxwidget->GetwxVtkBaseView(2);
+               wxVtkBaseView *wvbv3 = mwxwidget->GetwxVtkBaseView(3);
+               wxVtkBaseView *wvbv4 = mwxwidget->GetwxVtkBaseView(4);
+
+               //wxwidget->RefreshView();
+
+               bbSetOutputwxVtkBaseView1( wvbv1 );
+               bbSetOutputwxVtkBaseView2( wvbv2 );
+               bbSetOutputwxVtkBaseView3( wvbv3 );
+               bbSetOutputwxVtkBaseView4( wvbv4 );
+               if (wvbv1!=NULL) { bbSetOutputRenderer1( wvbv1->GetRenderer() ); }
+               if (wvbv2!=NULL) { bbSetOutputRenderer2( wvbv2->GetRenderer() ); }
+               if (wvbv3!=NULL) { bbSetOutputRenderer3( wvbv3->GetRenderer() ); }
+               if (wvbv4!=NULL) { bbSetOutputRenderer4( wvbv4->GetRenderer() ); }
+       }
 }
 
 //-------------------------------------------------------------
@@ -92,6 +95,7 @@ void ViewerNV::CreateWidget(wxWindow* parent)
 //-------------------------------------------------------------
 void ViewerNV::bbUserConstructor()
 {
+               mwxwidget = NULL;
                bbSetInputIn(NULL);
 
                std::vector<int> vecNTypeViwer;