C print zoom

// If the print area width is larger than the paper , Zoom 
            int pWidth = m_pd.DefaultPageSettings.Bounds.Width;
            int pHeight = m_pd.DefaultPageSettings.Bounds.Height;
            g.DrawImage(m_displayArea,
                    new System.Drawing.Rectangle(0, 0, pWidth, pHeight),// Zoom map 
                    new System.Drawing.Rectangle(0, 0, m_displayArea.Width, m_displayArea.Height),// Source graph 
                    GraphicsUnit.Pixel);