public override EventTarget OnAvtive()
{
DataFragment fragment = PtApp.ActiveDocument.Database.GetFragment();
m_Constraint = new UmlTimeLineConstraint(fragment);
m_SceneNode = new UmlTimeLineGraphicNode(m_Constraint);
PtApp.ActiveView.TransientObjectObserver.AddNode(m_SceneNode);
return base.OnAvtive();
}
public UmlTimeLineGraphicNode(UmlTimeLineConstraint constraint)
: base(constraint)
{
}