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AddMessageCommand Class
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Leadtools.ImageProcessing.Effects Namespace : AddMessageCommand Class



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

Object Model

AddMessageCommand Class

Syntax

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

Example

Run the AddMessageCommand on an image.

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

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "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, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24)

End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
C#Copy Code
public void AddMessageCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "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, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
SilverlightVBCopy Code

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: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also