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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
Managed Extensions for C++ 
public __gc class ChangeContrastCommandBitmapEffect : public RasterCommandBitmapEffect
C++/CLI 
public ref class ChangeContrastCommandBitmapEffect : public RasterCommandBitmapEffect
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 15\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, and Windows Server 2003

    See Also