Steema Central

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    public Form1()
    {
      InitializeComponent();
      InitializeChart();
    }

    private void InitializeChart()
    {
      tChart1.Aspect.View3D = false;

      FastLine fastLine1 = new FastLine(tChart1.Chart);
      fastLine1.FillSampleValues();

      drawLine1 = new Steema.TeeChart.Tools.DrawLine(tChart1.Chart);
      tChart1.DoubleClick += tChart1_DoubleClick;
      tChart1.MouseDown += tChart1_MouseDown;

    }

    private Steema.TeeChart.Tools.DrawLine drawLine1;
    private Point mousePos;

    void tChart1_MouseDown(object sender, MouseEventArgs e)
    {
      mousePos = new Point(e.X, e.Y);
    }

    void tChart1_DoubleClick(object sender, EventArgs e)
    {
      if (!mousePos.IsEmpty)
      {
        Steema.TeeChart.Tools.DrawLineItem dli = drawLine1.Clicked(mousePos.X, mousePos.Y);
      }
    }