public static void DeleteLeadDC(IntPtr hdc)
hdc
Handle to a device context that was created using the CreateLeadDC method.
using Leadtools;using Leadtools.Codecs;using Leadtools.Drawing;using Leadtools.ImageProcessing;public void CreateLeadDCExample(){RasterCodecs codecs = new RasterCodecs();RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"));LeadPoint point1 = new LeadPoint(image.Width / 8, image.Height / 8);LeadPoint point2 = new LeadPoint(image.Width / 2, image.Height / 2);// Convert the coordinates if necessary.if (image.ViewPerspective != RasterViewPerspective.TopLeft){point1 = image.PointToImage(RasterViewPerspective.TopLeft, point1);point2 = image.PointToImage(RasterViewPerspective.TopLeft, point2);}// Create the device contextIntPtr hdc = RasterImagePainter.CreateLeadDC(image);using (Graphics g = Graphics.FromHdc(hdc)){g.DrawEllipse(new Pen(Color.White), point1.X, point1.Y, point2.X - point1.X, point2.Y - point1.Y);}RasterImagePainter.DeleteLeadDC(hdc);codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Imahe1_CreateLeadDC.bmp"), RasterImageFormat.Bmp, 0);image.Dispose();codecs.Dispose();}static class LEAD_VARS{public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";}