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AnimationClock Class

Maintains the run-time state of an AnimationTimeline and processes its output values.

Namespace: System.Windows.Media.Animation
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public class AnimationClock : Clock
public class AnimationClock extends Clock
public class AnimationClock extends Clock
You cannot use this managed class in XAML.

AnimationClock objects are generated from AnimationTimeline objects. An AnimationTimeline describes an animation's output values, duration, begin time, end time, and other fundamental animation information. An AnimationClock processes the animation values described by an AnimationTimeline object.

This example shows how to use Clock objects to animate a propertiy.

There are three ways to animate a dependency property:

  • Create an AnimationTimeline and associate it with that property by using a Storyboard.

  • Use the object's BeginAnimation method to apply a single AnimationTimeline to a target property.

  • Create a Clock from an AnimationTimeline and apply it to a property.

Storyboard objects and the BeginAnimation method enable you to animate properties without directly creating and distributing clocks (see Animate a Property and Apply a Local (Non-Storyboard) Animation to a Property for examples); clocks are created and distributed for you automatically.

The following example shows how to create an AnimationClock and apply it to two similar properties.

/*
    This example shows how to create and apply
    an AnimationClock.
*/

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Media.Animation;


namespace Microsoft.Samples.Animation.TimingBehaviors
{
    public class AnimationClockExample : Page
    {
    
        ScaleTransform myScaleTransform;
        
        public AnimationClockExample()
        {
            
            this.WindowTitle = "Opacity Animation Example";
            this.Background = Brushes.White;
            StackPanel myStackPanel = new StackPanel();
            myStackPanel.Margin = new Thickness(20);
            
            // Create a button that with a ScaleTransform.
            // The ScaleTransform will animate when the
            // button is clicked.
            Button myButton = new Button();
            myButton.Margin = new Thickness(50);
            myButton.HorizontalAlignment = HorizontalAlignment.Left;
            myButton.Content = "Click Me";           
            myScaleTransform = new ScaleTransform(1,1);
            myButton.RenderTransform = myScaleTransform;
            
            
            // Associate an event handler with the
            // button's Click event.
            myButton.Click += new RoutedEventHandler(myButton_Clicked);
            
            myStackPanel.Children.Add(myButton);
            this.Content = myStackPanel;
        }
        
        // Create and apply and animation when the button is clicked.
        private void myButton_Clicked(object sender, RoutedEventArgs e)
        {

            // Create a DoubleAnimation to animate the
            // ScaleTransform.
            DoubleAnimation myAnimation = 
                new DoubleAnimation(
                    1, // "From" value
                    5, // "To" value 
                    new Duration(TimeSpan.FromSeconds(5))
                );
            myAnimation.AutoReverse = true;
            
            // Create a clock the for the animation.
            AnimationClock myClock = myAnimation.CreateClock();            
        
            // Associate the clock the ScaleX and
            // ScaleY properties of the button's
            // ScaleTransform.
            myScaleTransform.ApplyAnimationClock(
                ScaleTransform.ScaleXProperty, myClock);
            myScaleTransform.ApplyAnimationClock(
                ScaleTransform.ScaleYProperty, myClock);
        }
    }
}

For an example showing how to interactively control a Clock after it starts, see How to: Interactively Control a Clock.

System.Object
   System.Windows.Threading.DispatcherObject
     System.Windows.Media.Animation.Clock
      System.Windows.Media.Animation.AnimationClock

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0
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