gistfile1.cs

        void pictureBox2_MouseClick(object sender, MouseEventArgs e)
        {
            Bitmap bmp = new Bitmap(this.pictureBox2.Image);
            Color color = bmp.GetPixel(e.X, e.Y);
            Bitmap message = new Bitmap(400, 30);
            Graphics gr = Graphics.FromImage(message);
            gr.Clear(Color.Black);

            if (!(color.B == 0 && color.G == 0 && color.R == 0))
            {
                double value = this.view.GetTemparature((double)color.R / (double)255, (double)color.G / (double)255, (double)color.B / (double)255);
                
                Font font = new Font("Arial", 15);
                gr.DrawString(string.Format("Temperatura : {0}", Math.Round(value, 2).ToString()), new Font("Arial", 15), Brushes.White, new PointF(0, 0));
            }

            gr.Save();

            this.pictureBox3.Image = message;
        }