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 These events created by TCAD, it is important for programming.
    property OnActionToolToSelecting
    property OnChildShapeSelected
    property OnDeleteLayer
    property OnMouseEnter
    property OnMouseEnterShape
    property OnMouseLeave
    property OnMouseLeaveShape
    property OnNewLayer
    property OnNodeAdded
    property OnNodeDeleted
    property OnPaint
    property OnShapeAdded
    property OnShapeCodeDragging
    property OnShapeCodeRotating
    property OnShapeDeleted
    property OnShapeMouseDragged:
    property OnShapeMouseDragging
    property OnShapeMouseResized
    property OnShapeMouseResizing
    property OnShapeMouseRotated
    property OnShapeMouseRotating
    property OnShapeSelected
you should read help file and read code in our demo project,then you can understand them.