void CommitCorrection()
		{
			if(CurrentLaserIndex>=0)
			{
				LaserCorrection cor = new LaserCorrection();
				cor.LoadFromSettings(CurrentLaserIndex);
				cor.Apply(Drag);
				cor.SaveToSettings(CurrentLaserIndex);
				Drag.Init();
			}
		}
		private void PreviewPanel_Paint(object sender, PaintEventArgs e)
		{
			//Graphics g = e.Graphics;
			using (Bitmap bmp = new Bitmap(PreviewPanel.Width, PreviewPanel.Height))
			{
				using (Graphics g = Graphics.FromImage(bmp))
				{
					g.Clip = new Region();
					using (SolidBrush b = new SolidBrush(PreviewPanel.BackColor))
						g.FillRectangle(b, 0, 0, PreviewPanel.Width, PreviewPanel.Height);

					if (ScanInfo != null)
					{
						try
						{
							ScanLine line=null;
							LaserCorrection corr = null;
							double size = ScanInfo.Size() * 1.2f;
							double factor = Math.Min(PreviewPanel.Width, PreviewPanel.Height) / size;
							Matrix4d baseMatrix = Matrix4d.Scale(factor);
							PointF center = new PointF(PreviewPanel.Width / 2, PreviewPanel.Height / 2);
                            DrawGrid(g, center, (float)factor);
							int currentLaser = CurrentLaserIndex;
							List<ScanLine> selectedLaserLine = new List<ScanLine>();
							for (int i = 0; i < ScanInfo.Count; i++)
							{
								line = ScanInfo[i];

								corr = new LaserCorrection();
								corr.LoadFromSettings(line.LaserID);
								bool selected = currentLaser == line.LaserID;
                                if (!selected)
                                {
                                    DrawScanLine(g, center, factor, line, corr, false);
                                }
                                else
                                    selectedLaserLine.Add(line);
							}

                            corr = new LaserCorrection();
                            corr.LoadFromSettings(selectedLaserLine[Math.Max(0,currentLaser)].LaserID);
                            corr.Apply(Drag);
                            for (int i = 0; i < selectedLaserLine.Count; i++)
							{
                                DrawScanLine(g, center, factor,selectedLaserLine[i], corr, true);
							}

						}
						catch
						{
						}
					}
				}
				e.Graphics.Clip = new Region();
				e.Graphics.DrawImageUnscaled(bmp, new Point(0, 0));
			}
		}