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ChangeContrastCommand Constructor(Int32)
See Also  Example



contrast
Amount of contrast change. Valid values are -1000 to +1000.
Initializes a new ChangeContrastCommand class object with explicit parameters.

Syntax

Visual Basic (Declaration) 
Public Function New( _
   ByVal contrast As Integer _
)
Visual Basic (Usage)Copy Code
Dim contrast As Integer
 
Dim instance As ChangeContrastCommand(contrast)
C# 
public ChangeContrastCommand( 
   int contrast
)
C++/CLI 
public:
ChangeContrastCommand( 
   int contrast
)

Parameters

contrast
Amount of contrast change. Valid values are -1000 to +1000.

Example

Run the ChangeContrastCommand on an image and increase its contrast.

Visual BasicCopy Code
Public Sub ChangeContrastConstructorExample()
   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 ChangeContrastCommand = New ChangeContrastCommand(250)
   'Increase the contrast by 25 percent of the possible range.
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void ChangeContrastConstructorExample() 
{ 
   // 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 
   ChangeContrastCommand command = new ChangeContrastCommand(250); 
 
   // Increase the contrast  by 25 percent  of the possible range. 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

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