Ellipse selection

Enos

12y1.4k

Hi everyone,

I have 5 Ellipse circles and i want the user to select one at a time, the user must not select more than 1. how do i archive this..

Thanks.

4 Replies

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Suzan Mat12y ago
I think you might be able to accomplish this using a programming toolkit that supports Annotation objects (such as leadtools).
I am currently using this toolkit to create and annotate my documents. Annotation objects include different types of shapes (Rectangle, Ellipse, FreeHand, etc.) that trigger events when applying any action (click, draw, edit, etc.) on the annotation object.
You can handle the click event of the object to change the object's color, and then disable the object so that it's no longer clickable.
Note that annotations are usually drawn on a different layer over the image's pixel data. You can find more information here.
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Enos12y ago
Here is the fingers

private void Right1_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
}

private void Right2_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
}

private void Right3_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
}

private void Right4_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
}

private void Right5_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
}
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Enos12y ago
Hi Selva,

Actually its a hand with with five fingers. on top of each finger i have put Ellipse. so i want the user to click one finger at a time. after that it must change color and it must not be selected again. how do i archive this
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Selva Ganapathy12y ago

Hi Enos,
This following code may help you in a better way.
        public Form1()
        {
            InitializeComponent();

        }
        string ellipseNumber = "0";
        private void button1_Click(object sender, EventArgs e)
        {
            ellipseNumber = (sender as Button).Text;
            this.Invalidate();
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            e.Graphics.DrawEllipse(Pens.Orange, new Rectangle(100,100,100,100));
            e.Graphics.DrawEllipse(Pens.Orange, new Rectangle(250, 100, 100, 100));
            e.Graphics.DrawEllipse(Pens.Orange, new Rectangle(400, 100, 100, 100));
            e.Graphics.DrawEllipse(Pens.Orange, new Rectangle(550, 100, 100, 100));
            e.Graphics.DrawEllipse(Pens.Orange, new Rectangle(700, 100, 100, 100));
            if(ellipseNumber == "1")
            e.Graphics.FillEllipse(Brushes.Orange, new Rectangle(100, 100, 100, 100));
            else if (ellipseNumber == "2")
            e.Graphics.FillEllipse(Brushes.Orange, new Rectangle(250, 100, 100, 100));
            else if (ellipseNumber == "3")
            e.Graphics.FillEllipse(Brushes.Orange, new Rectangle(400, 100, 100, 100));
            else if (ellipseNumber == "4")
            e.Graphics.FillEllipse(Brushes.Orange, new Rectangle(550, 100, 100, 100));
            else if (ellipseNumber == "5")
            e.Graphics.FillEllipse(Brushes.Orange, new Rectangle(700, 100, 100, 100));
        }
Regards,
Selva Ganapathy K
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