private void printPreviewControl1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
 {
     if (m_mniArea.Checked && e.Button == MouseButtons.Left)
     {
         m_rtgMove      = new Rectangle(m_intRTGX1, m_intRTGY1, e.X - m_intRTGX1, e.Y - m_intRTGY1);
         m_blnPaintMove = true;
         printPreviewControl1.Invalidate(new Rectangle(m_intRTGX1, m_intRTGY1, e.X - m_intRTGX1 + 10, e.Y - m_intRTGY1 + 10));
     }
 }