We will use a brush to draw a filled circle with the center of the circle at the point clicked. Then we will use a pen to draw a border around the circle.
Add this code to the MouseClick event:
private void Form1_MouseClick(object sender, MouseEventArgs e) { // Draw a yellow circle with a border with the center at the point clicked. // Get the graphics of the form. Graphics g = this.CreateGraphics(); // Create a Yellow Brush. SolidBrush myBrush = new SolidBrush(Color.Yellow); // Create a black pen with a width of 1. Pen myPen = new Pen(Color.Black, 1); // Create a filled yellow circle with the center at point clicked. // The diameter of the circle is 40, so the center is x-20. g.FillEllipse(myBrush, e.X-20, e.Y-20, 40, 40); // Add a black border around it. g.DrawEllipse(myPen, e.X - 20, e.Y - 20, 40, 40); }
