C#
C++/CLI
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public static void AddRegionToRegion(RasterImage image,RasterRegionXForm xform,IntPtr region,RasterRegionCombineMode combineMode)
image
The source image.
xform
Leadtools.RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in VB) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
region
The Windows region handle to add.
combineMode
The action to take regarding the existing image region, if one is defined.
To update an existing region, you specify how the new region is to be combined with the existing one using the combineMode parameter. For more information, refer to Leadtools.RasterRegionCombineMode.
For more information, refer to the following:
using Leadtools;using Leadtools.Codecs;using Leadtools.Drawing;using Leadtools.ImageProcessing;using Leadtools.ImageProcessing.Color;public void AddRegionToRegionGdi_Example(){RasterCodecs codecs = new RasterCodecs();string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddRegionToRegion.bmp");// Load the imageRasterImage image = codecs.Load(srcFileName);// Create a GDI+ regionRegion region;using (GraphicsPath path = new GraphicsPath()){path.AddRectangle(new Rectangle(100, 100, 200, 200));path.AddEllipse(new Rectangle(150, 150, 200, 200));region = new Region(path);}// Get the Windows GDI handle for this regionIntPtr hrgn;using (Bitmap btmp = new Bitmap(1, 1)){using (Graphics graphics = Graphics.FromImage(btmp)){hrgn = region.GetHrgn(graphics);}}// Add this region to the raster imageRasterRegionConverter.AddRegionToRegion(image, null, hrgn, RasterRegionCombineMode.Set);region.ReleaseHrgn(hrgn);region.Dispose();// Draw something on the imageInvertCommand command = new InvertCommand();command.Run(image);// Save the imagecodecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);image.Dispose();codecs.Dispose();}static class LEAD_VARS{public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";}