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ChangeContrastCommandBitmapEffect Class
See Also  Members   Example 
Leadtools.Windows.Media.Effects.Color Namespace : ChangeContrastCommandBitmapEffect Class





Increases or decreases the contrast of the image.

Syntax

Visual Basic (Declaration) 
Public Class ChangeContrastCommandBitmapEffect 
   Inherits RasterCommandBitmapEffect
Visual Basic (Usage)Copy Code
Dim instance As ChangeContrastCommandBitmapEffect
C# 
public class ChangeContrastCommandBitmapEffect : RasterCommandBitmapEffect 
C++/CLI 
public ref class ChangeContrastCommandBitmapEffect : public RasterCommandBitmapEffect 
XAML Property Element Usage 

ChangeContrastCommandBitmapEffect ...

XAML Property Element Usage 

ChangeContrastCommandBitmapEffect ...

Example

Runs the ChangeContrastCommandBitmapEffect on an image and increases its contrast.

Visual BasicCopy Code
Public Sub ChangeContrastCommandBitmapEffectExample(ByVal element As FrameworkElement)

   ' Initialize Effect
   Dim effect As ChangeContrastCommandBitmapEffect = New ChangeContrastCommandBitmapEffect()
   effect.Contrast = 250
   element.BitmapEffect = effect

   ' Initialize Animations
   Dim animation1 As Int32Animation = New Int32Animation()
   animation1.From = -1000
   animation1.To = 1000
   animation1.By = 1
   animation1.Duration = New Duration(TimeSpan.FromSeconds(5.0))
   animation1.AutoReverse = True
   animation1.RepeatBehavior = RepeatBehavior.Forever

   ' Initialize and run Storyboard
   Dim storyboard As Storyboard = New Storyboard()
   storyboard.SetTargetName(animation1, "AnimatedBitmapEffect")
   storyboard.SetTargetProperty(animation1, New PropertyPath(ChangeContrastCommandBitmapEffect.ContrastProperty))
   element.RegisterName("AnimatedBitmapEffect", effect)
   storyboard.Children.Add(animation1)

   storyboard.Begin(element)
End Sub
C#Copy Code
public void ChangeContrastCommandBitmapEffectExample(FrameworkElement element) 

 
   // Initialize Effect 
   ChangeContrastCommandBitmapEffect effect = new ChangeContrastCommandBitmapEffect(); 
   effect.Contrast = 250; 
   element.BitmapEffect = effect; 
 
   // Initialize Animations 
   Int32Animation animation1 = new Int32Animation(); 
   animation1.From = -1000; 
   animation1.To = 1000; 
   animation1.By = 1; 
   animation1.Duration = new Duration(TimeSpan.FromSeconds(5.0)); 
   animation1.AutoReverse = true; 
   animation1.RepeatBehavior = RepeatBehavior.Forever; 
 
   // Initialize and run Storyboard 
   Storyboard storyboard = new Storyboard(); 
   Storyboard.SetTargetName(animation1, "AnimatedBitmapEffect"); 
   Storyboard.SetTargetProperty(animation1, new PropertyPath(ChangeContrastCommandBitmapEffect.ContrastProperty)); 
   element.RegisterName("AnimatedBitmapEffect", effect); 
   storyboard.Children.Add(animation1); 
 
   storyboard.Begin(element); 
}
XAMLCopy Code
<Page Title="CSAnimateEffect" Height="391" Width="300" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:lteffects="clr-namespace:Leadtools.Windows.Media.Effects.Color;assembly=Leadtools.Windows.Media.Effects"> 
  <Grid> 
    <Image Margin="10,10,10,10" HorizontalAlignment="Center" VerticalAlignment="Center" Source="C:\Program Files\LEAD Technologies, Inc\LEADTOOLS 16\Images\slave.jpg"> 
      <Image.BitmapEffect> 
        <lteffects:ChangeContrastCommandBitmapEffect x:Name="MyBitmapEffect" /> 
      </Image.BitmapEffect> 
      <Image.Triggers> 
        <EventTrigger RoutedEvent="Image.Loaded"> 
          <BeginStoryboard> 
            <Storyboard> 
              <Int32Animation Storyboard.TargetName="MyBitmapEffect" Storyboard.TargetProperty="Contrast" From="-1000" To="1000" Duration="0:0:5" RepeatBehavior="Forever" AutoReverse="True" /> 
            </Storyboard> 
          </BeginStoryboard> 
        </EventTrigger> 
      </Image.Triggers> 
    </Image> 
  </Grid> 
</Page>

Remarks

    Inheritance Hierarchy

    System.Object
       System.Windows.Threading.DispatcherObject
          System.Windows.DependencyObject
             System.Windows.Freezable
                System.Windows.Media.Animation.Animatable
                   System.Windows.Media.Effects.BitmapEffect
                      Leadtools.Windows.Media.Effects.RasterCommandBitmapEffect
                         Leadtools.Windows.Media.Effects.Color.ChangeContrastCommandBitmapEffect

    Requirements

    Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Vista, Windows Server 2003 family, Windows Server 2008 family

    See Also