private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            int   x = e.X, y = e.Y;
            Point p = new Point(x, y);

            if (_tLines.Count > 0)
            {
                jLine tLine = _tLines.FirstOrDefault(t => t.Rect.Contains(p));//point to line rectangle
                if (tLine != null)
                {
                    toolStripStatusLabel1.Text = tLine.Text;
                    jWord word = tLine.Words.FirstOrDefault(w => w.Rect.Contains(p));//point to word rectangle
                    if (word != null)
                    {
                        toolStripStatusLabel2.Text = word.Text;
                    }
                }
                else
                {
                    toolStripStatusLabel1.Text = "";
                    toolStripStatusLabel2.Text = "";
                }
            }
            toolStripStatusLabel4.Text = p.ToString();
        }
        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            int   x = e.X, y = e.Y;
            Point p = new Point(x, y);

            if (_tLines.Count > 0)
            {
                //draw rectangle over selected word
                jLine tLine = _tLines.FirstOrDefault(t => t.Rect.Contains(p));
                if (e.Button == MouseButtons.Right)
                {
                    Clipboard.SetText(tLine.Text);
                }
                if (tLine != null)
                {
                    jWord word = tLine.Words.FirstOrDefault(w => w.Rect.Contains(p));
                    if (word != null)
                    {
                        //draw picture over background original
                        using (Bitmap bmp = new Bitmap(pictureBox1.BackgroundImage.Width, pictureBox1.BackgroundImage.Height))
                        {
                            bmp.MakeTransparent();//less memory
                            using (Graphics g = Graphics.FromImage(bmp))
                            {
                                using (Pen pen = new Pen(Color.Green, 4))
                                {
                                    g.DrawRectangle(pen, word.Rect);//word rectangle
                                }
                            }
                            pictureBox1.Image = (Bitmap)bmp.Clone();
                        }
                        toolStripStatusLabel3.Text = word.Text;
                    }
                }
            }
        }