Steema Central

Posted: **Tue Jun 14, 2011 9:14 am**

Hi

I am using AxisScroll in the chart.
Is there any event which is raised when I drag my mouse over the axis. The axis moves automatically but I want to do some thing more when user will drag mouse over the axis.
Is there any way by which I can detect that user is scrolling using AxisScroll.

Regards
- JC

Posted: **Wed Jun 15, 2011 2:53 pm**

Hello VarUser,

You can do something using Chart events, as next code, where use AxesClick event to detected axes work as you want work:

Code: Select all

        private Steema.TeeChart.Styles.Bar bar1;
        private Steema.TeeChart.Tools.AxisScroll axisScroll1;

        void InitializeChart()
        {
            bar1 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
            bar1.FillSampleValues();

            axisScroll1 = new Steema.TeeChart.Tools.AxisScroll(tChart1.Chart);
            tChart1.ClickAxis += new MouseEventHandler(tChart1_ClickAxis);
        }

        void tChart1_ClickAxis(object sender, MouseEventArgs e)
        {
            if (tChart1.Axes.Bottom == sender)
            {
                axisScroll1.Active = true;
            }
            else
            {
                axisScroll1.Active = false;
            }
        }

Could you confirm us if previous code works as you expected?

I hope will helps.
Thanks,

Posted: **Thu Jun 16, 2011 7:00 am**

Hi Sandra

Thanks for your reply.

One related query.
We have handled tChart.Zoomed event and when we use AxisScroll to scroll the data, this event handler for Zoomed is un-necessarily getting called.
This means that even when we scroll the data(using AxisScroll) zoomed event is raised. Is there any way to get rid of this.

Regards
- JC

Posted: **Fri Jun 17, 2011 8:56 am**

Hello VarUser,

We have handled tChart.Zoomed event and when we use AxisScroll to scroll the data, this event handler for Zoomed is un-necessarily getting called.
This means that even when we scroll the data(using AxisScroll) zoomed event is raised. Is there any way to get rid of this.

I have made simple project using Zoomed and Scroll events where respectively disable and enable AxisScroll:

Code: Select all

     private Steema.TeeChart.Styles.Bar bar1;
        private Steema.TeeChart.Tools.AxisScroll axisScroll1;

        void InitializeChart()
        {
            bar1 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
            bar1.FillSampleValues();
            axisScroll1 = new Steema.TeeChart.Tools.AxisScroll(tChart1.Chart);
            tChart1.Scroll += new EventHandler(tChart1_Scroll);
            tChart1.Zoomed += new EventHandler(tChart1_Zoomed);
        }

        void tChart1_Zoomed(object sender, EventArgs e)
        {
            axisScroll1.Active = false;
        }

        void tChart1_Scroll(object sender, EventArgs e)
        {
            axisScroll1.Active = true;
        }

Could you confirm us if previous code works as you expected?

Thanks,

Posted: **Wed Jun 22, 2011 9:21 am**

Thanks for the reply

Regards
- JC

Steema Central

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