/// <summary>
        /// OnHandleCreated.
        /// </summary>
        protected override void OnHandleCreated(System.EventArgs e)
        {
            if (!this.DesignMode)
            {
                Kitware.VTK.vtkLogoWidget w = new Kitware.VTK.vtkLogoWidget();

                this.m_Renderer     = Kitware.VTK.vtkRenderer.New();
                this.m_RenderWindow = Kitware.VTK.vtkRenderWindow.New();

                System.IntPtr xdisplay = GetXDisplay();
                bool          isX11    = false;
                if (System.IntPtr.Zero != xdisplay)
                {
                    isX11 = true;
                }

                if (isX11)
                {
                    // If running an X11-based build, then we must use a
                    // vtkGenericRenderWindowInteractor:
                    //
                    this.m_RenderWindowInteractor = Kitware.VTK.vtkGenericRenderWindowInteractor.New();
                    this.m_RenderWindow.SetDisplayId(xdisplay);
                }
                else
                {
                    // Allow the native factory method to produce the natively expected subclass
                    // of vtkRenderWindowInteractor:
                    //
                    this.m_RenderWindowInteractor = Kitware.VTK.vtkRenderWindowInteractor.New();
                }

                Kitware.VTK.vtkInteractorStyleSwitch style = this.m_RenderWindowInteractor.GetInteractorStyle()
                                                             as Kitware.VTK.vtkInteractorStyleSwitch;
                if (null != style)
                {
                    style.SetCurrentStyleToTrackballCamera();
                }

                this.m_RenderWindow.SetParentId(this.Handle);
                this.m_RenderWindow.AddRenderer(this.m_Renderer);

                if (!isX11)
                {
                    this.AttachInteractor();
                }

                w.Dispose();
            }

            base.OnHandleCreated(e);
        }
    /// <summary>
    /// OnHandleCreated.
    /// </summary>
    protected override void OnHandleCreated(System.EventArgs e)
    {
      if (!this.DesignMode)
      {
        Kitware.VTK.vtkLogoWidget w = new Kitware.VTK.vtkLogoWidget();

        this.m_Renderer = Kitware.VTK.vtkRenderer.New();
        this.m_RenderWindow = Kitware.VTK.vtkRenderWindow.New();

        System.IntPtr xdisplay = GetXDisplay();
        bool isX11 = false;
        if (System.IntPtr.Zero != xdisplay)
        {
          isX11 = true;
        }

        if (isX11)
        {
          // If running an X11-based build, then we must use a
          // vtkGenericRenderWindowInteractor:
          //
          this.m_RenderWindowInteractor = Kitware.VTK.vtkGenericRenderWindowInteractor.New();
          this.m_RenderWindow.SetDisplayId(xdisplay);
        }
        else
        {
          // Allow the native factory method to produce the natively expected subclass
          // of vtkRenderWindowInteractor:
          //
          this.m_RenderWindowInteractor = Kitware.VTK.vtkRenderWindowInteractor.New();
        }

        Kitware.VTK.vtkInteractorStyleSwitch style = this.m_RenderWindowInteractor.GetInteractorStyle()
          as Kitware.VTK.vtkInteractorStyleSwitch;
        if (null != style)
        {
          style.SetCurrentStyleToTrackballCamera();
        }

        this.m_RenderWindow.SetParentId(this.Handle);
        this.m_RenderWindow.AddRenderer(this.m_Renderer);

        if (!isX11)
        {
          this.AttachInteractor();
        }

        w.Dispose();
      }

      base.OnHandleCreated(e);
    }