创建双边偏置曲线（通过TOGGLE控件来控制是否保留原来的曲线）

 public int apply_cb()
    {
        int errorCode = 0;
        try
        {
            //---- Enter your callback code here -----
            
            NXOpen.TaggedObject[] curves = edge_select0.GetSelectedObjects();
            double distance = double0.Value;
            bool i = toggle0.Value;

            CreateOffset(curves,distance,i);
            CreateOffset(curves,-distance, i);

        }
        catch (Exception ex)
        {
            //---- Enter your exception handling code here -----
            errorCode = 1;
            theUI.NXMessageBox.Show("Block Styler", NXMessageBox.DialogType.Error, ex.ToString());
        }
        return errorCode;
    }



    private void CreateOffset(NXOpen.TaggedObject[] curves1, double distance, bool i)
    {
        //NXOpen.Session theSession = NXOpen.Session.GetSession();
        NXOpen.Part workPart = theSession.Parts.Work;
        NXOpen.Part displayPart = theSession.Parts.Displ