fix some on properties and signal connection

src/Vtk/vtkQViewport.h

@@ -30,6 +30,8 @@ namespace Vtk {
  */
 class QViewport : public QWidget, public Viewport {
     Q_OBJECT
+signals:
+    void puppetSelected(uLib::Vtk::Puppet* p);
 public:
     explicit QViewport(QWidget* parent = nullptr);
     virtual ~QViewport();
@@ -42,6 +44,8 @@ public:
     virtual vtkRenderWindowInteractor*  GetInteractor() override;
     QVTKOpenGLNativeWidget*     GetWidget()      { return m_VtkWidget; }
 
+    virtual void OnSelectionChanged(Puppet* p) override;
+
 protected:
     virtual void resizeEvent(QResizeEvent* event) override;