fix some on properties and signal connection

src/Vtk/vtkQViewport.cpp

@@ -101,6 +101,11 @@ void QViewport::onGridButtonClicked()
     SetGridVisible(m_GridButton->isChecked());
 }
 
+void QViewport::OnSelectionChanged(Puppet* p)
+{
+    emit puppetSelected(p);
+}
+
 void QViewport::resizeEvent(QResizeEvent* event)
 {
     QWidget::resizeEvent(event);