armega @ #vs.net on undernet

    #region ViewJob
    public class ViewJob
    {
        private Rectangle m_rectRubberBand;
        private Point m_pntPointOne;
        private Point m_pntPointTwo;
        private Pen m_penRubberBandPen;
        private Rectangle m_rectOldRubberBand;

        //Constructor
        public KofaxViewJob()
        {
            //Create the default pen
            m_penRubberBandPen = new Pen(Color.Red, 1);
            m_penRubberBandPen.DashCap = System.Drawing.Drawing2D.DashCap.Round;
            m_penRubberBandPen.DashPattern = new float[] { 2f, 2f, 2f, 2f };
        }

        //RubberBand
        public Rectangle RubberBand
        {
            get
            {
                return m_rectRubberBand;
            }
            set
            {
                m_rectRubberBand = value;
            }
        }

        //PointOne
        public Point PointOne
        {
            get
            {
                return m_pntPointOne;
            }
            set
            {
                m_pntPointOne = value;
            }
        }

        //PointTwo
        public Point PointTwo
        {
            get
            {
                return m_pntPointTwo;
            }
            set
            {
                m_pntPointTwo = value;
            }
        }

        //RubberBandPen
        public Pen RubberBandPen
        {
            get
            {
                return m_penRubberBandPen;
            }
            set
            {
                m_penRubberBandPen = value;
            }
        }

        //OldRubberBand
        public Rectangle OldRubberBand
        {
            get
            {
                return m_rectOldRubberBand;
            }
            set
            {
                m_rectOldRubberBand = value;
            }
        }
    }
    #endregion


public partial class MainGUI : Form
{
    private ViewJob kViewJob = new ViewJob();

        private void pbDisplay_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Right)
            {
                if (kViewJob.RubberBand.IsEmpty)
                {
                    kViewJob.PointOne = new Point(e.X, e.Y);
                }
            }
        }

        private void pbDisplay_MouseMove(object sender, MouseEventArgs e)
        {
            if (!kViewJob.PointOne.IsEmpty && kViewJob.PointTwo.IsEmpty)
            {
                Rectangle rectValidArea = new Rectangle(0, 0, pbDisplay.ClientSize.Width, pbDisplay.ClientSize.Height);
                Point pntMouse = new Point(e.X, e.Y);
                if (rectValidArea.Contains(pntMouse))
                {
                    Point pntTemp1 = new Point(Math.Min(kViewJob.PointOne.X, e.X), Math.Min(kViewJob.PointOne.Y, e.Y));
                    Point pntTemp2 = new Point(Math.Max(kViewJob.PointOne.X, e.X), Math.Max(kViewJob.PointOne.Y, e.Y));

                    kViewJob.RubberBand = new Rectangle(pntTemp1.X, pntTemp1.Y, pntTemp2.X - pntTemp1.X, pntTemp2.Y - pntTemp1.Y);
                }
                else
                {
                    Point pntInBounds = pntMouse;
                    pntInBounds = new Point(Math.Max(pntInBounds.X, 0), Math.Max(pntInBounds.Y, 0));
                    pntInBounds = new Point(Math.Min(pntInBounds.X, rectValidArea.Width), Math.Min(pntInBounds.Y, rectValidArea.Height));
                    Point pntTemp1 = new Point(Math.Min(kViewJob.PointOne.X, pntInBounds.X), Math.Min(kViewJob.PointOne.Y, pntInBounds.Y));
                    Point pntTemp2 = new Point(Math.Max(kViewJob.PointOne.X, pntInBounds.X), Math.Max(kViewJob.PointOne.Y, pntInBounds.Y));

                    kViewJob.RubberBand = new Rectangle(pntTemp1.X, pntTemp1.Y, pntTemp2.X - pntTemp1.X - 1, pntTemp2.Y - pntTemp1.Y - 1);
                }

                //Show the rubberband on the picturebox
                pbDisplay.Invalidate();
            }
        }

        private void pbDisplay_MouseUp(object sender, MouseEventArgs e)
        {
            if (!kViewJob.PointOne.IsEmpty && kViewJob.PointTwo.IsEmpty)
            {
                kViewJob.PointTwo = new Point(e.X, e.Y);

                //Get the drawing area of the rubberband
                Rectangle rectAreaToClean = new Rectangle(
                    kViewJob.RubberBand.X - (int)(kViewJob.RubberBandPen.Width / 2),
                    kViewJob.RubberBand.Y - (int)(kViewJob.RubberBandPen.Width / 2),
                    kViewJob.RubberBand.Width + (int)kViewJob.RubberBandPen.Width,
                    kViewJob.RubberBand.Height + (int)kViewJob.RubberBandPen.Width);

                //Save the rubberband then clear it
                kViewJob.OldRubberBand = kViewJob.RubberBand;
                kViewJob.PointOne = default(Point);
                kViewJob.PointTwo = default(Point);
                kViewJob.RubberBand = default(Rectangle);

                //Erase the rubberband from the picturebox
                pbDisplay.Invalidate(rectAreaToClean);
            }
        }

        private void pbDisplay_Paint(object sender, PaintEventArgs e)
        {
            if (!kViewJob.RubberBand.IsEmpty)
            {
                e.Graphics.DrawRectangle(kViewJob.RubberBandPen, kViewJob.RubberBand);
            }
        }
}