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AddMessageCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Effects Namespace : AddMessageCommand Class



Adds a message (text or file) to the image. This command is available in the Document/Medical Toolkits.

Syntax

Visual Basic (Declaration) 
Public Class AddMessageCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As AddMessageCommand
C# 
public class AddMessageCommand : RasterCommand, IRasterCommand 
C++/CLI 
public ref class AddMessageCommand : public RasterCommand, IRasterCommand 

Example

Run the AddMessageCommand on an image.

Visual BasicCopy Code
Public Sub AddMessageCommandExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim command As AddMessageCommand = New AddMessageCommand
   command.Message = "LEAD Technologies, Inc."
   ' Add the above message to image in the default position and with the default password.
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void AddMessageCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   AddMessageCommand command = new AddMessageCommand(); 
   command.Message  = "LEAD Technologies, Inc."; 
   // Add the above message to image in the default position and with the default password. 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
   RasterCodecs.Shutdown(); 
}

Remarks

  • The purpose of this command is for security since the message added will be embedded into the image without any visible changes and the resulting image has the same size as the original.
  • This command can add a message to any type of lossless image such as BMP, TIFF, lossless JPEG, and so forth. If used with lossy format types the message may be corrupted or lost.
  • To extract the embedded message use ExtractMessageCommand.
  • This command supports 24- and 48-bits images, and 8- and 16-bits grayscale images
  • This command does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.AddMessageCommand

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also