Steema Central

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    private Steema.TeeChart.Styles.Candle candle1;
    private Steema.TeeChart.Tools.NearestPoint nearestPoint1;

    private void InitializeChart()
    {
      tChart1.Aspect.View3D = false;
      tChart1.Zoom.Direction = Steema.TeeChart.ZoomDirections.None;
      tChart1.Panning.Allow = Steema.TeeChart.ScrollModes.None;

      candle1 = new Steema.TeeChart.Styles.Candle(tChart1.Chart);
      candle1.FillSampleValues();

      nearestPoint1 = new Steema.TeeChart.Tools.NearestPoint(candle1);
      nearestPoint1.Active = false;

      tChart1.MouseDown += tChart1_MouseDown;
      tChart1.MouseMove += tChart1_MouseMove;
      tChart1.MouseUp += tChart1_MouseUp;
    }

    void tChart1_MouseUp(object sender, MouseEventArgs e)
    {
      if (!multiPointLine && (index != -1))
      {
        AddNewPoint(new Point(e.X, e.Y));
      }
      index = -1;
    }

    private void AddNewPoint(Point point)
    {
      int newIndex = nearestPoint1.GetNearestPoint(point);
      tChart1[tChart1.Series.Count - 1].Add(candle1.XValues[newIndex], candle1.YValues[newIndex]);
    }

    void tChart1_MouseMove(object sender, MouseEventArgs e)
    {
      if (multiPointLine && (index != -1))
      {
        AddNewPoint(new Point(e.X, e.Y));
      }
    }

    private int index = -1;

    void tChart1_MouseDown(object sender, MouseEventArgs e)
    {
      index = nearestPoint1.GetNearestPoint(new Point(e.X, e.Y));

      if (index != -1)
      {
        tChart1.Series.Add(new Steema.TeeChart.Styles.Line());
        tChart1[tChart1.Series.Count - 1].Add(candle1.XValues[index], candle1.YValues[index]);
      }
    }

    private bool multiPointLine = false;

    private void checkBox1_CheckedChanged(object sender, EventArgs e)
    {
      multiPointLine = checkBox1.Checked;
    }

    private void checkBox2_CheckedChanged(object sender, EventArgs e)
    {
      tChart1.Axes.Left.Logarithmic = checkBox2.Checked;
    }