_wxVTKiren= _vtkInteractorStyleBaseView->GetWxVtk2DBaseView()->GetWxVTKRenderWindowInteractor();
_wxVTKiren->GetEventPosition( X , Y );
_wxVTKiren= _vtkInteractorStyleBaseView->GetWxVtk2DBaseView()->GetWxVTKRenderWindowInteractor();
_wxVTKiren->GetEventPosition( X , Y );