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                     //Uhrzeit
                    string strUhrzeit = DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second;
                    System.Drawing.Font drawFont = new System.Drawing.Font("Arial", 22, FontStyle.Bold);
                    SolidBrush drawBrush = new SolidBrush(Color.Black);
                   
                        // POSITION RECHNEN
                        Bitmap bmp = (Bitmap)pct_preview.Image;
                        int intX_POSI = bmp.Width - 70;
                        int intY_POSI = bmp.Height - 20;
                        

                    PointF drawPoint = new Point(intX_POSI, intY_POSI);
                    e.Graphics.DrawString(strUhrzeit, drawFont, drawBrush, drawPoint);