Storyboard.Begin 方法

定义

命名空间:

System.Windows.Media.Animation

程序集:

PresentationFramework.dll

启动与此 Storyboard关联的动画集。

重载

Begin(FrameworkElement, FrameworkTemplate, HandoffBehavior, Boolean)	将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。
Begin(FrameworkElement, HandoffBehavior, Boolean)	将与此 Storyboard 关联的动画应用于其目标并启动它们。
Begin(FrameworkElement, FrameworkTemplate, HandoffBehavior)	将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。
Begin(FrameworkElement, FrameworkTemplate, Boolean)	将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。
Begin(FrameworkContentElement, HandoffBehavior, Boolean)	将与此 Storyboard 关联的动画应用于其目标，并使用指定的 HandoffBehavior启动它们。
Begin(FrameworkElement, FrameworkTemplate)	将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。
Begin(FrameworkElement, HandoffBehavior)	将与此 Storyboard 关联的动画应用于其目标，并使用指定的 HandoffBehavior启动它们。
Begin(FrameworkContentElement, HandoffBehavior)	将与此 Storyboard 关联的动画应用于其目标，并使用指定的 HandoffBehavior启动它们。
Begin(FrameworkContentElement, Boolean)	将与此 Storyboard 关联的动画应用于其目标并启动它们。
Begin(FrameworkElement)	将与此 Storyboard 关联的动画应用于其目标并启动它们。
Begin(FrameworkContentElement)	将与此 Storyboard 关联的动画应用于其目标并启动它们。
Begin()	将与此 Storyboard 关联的动画应用于其目标并启动它们。
Begin(FrameworkElement, Boolean)	将与此 Storyboard 关联的动画应用于其目标并启动它们。

注解

可控制的情节提要可以暂停、恢复、查找、停止和删除。 若要使情节提要在代码中可控制，必须使用情节提要的 Begin 方法的适当重载，并指定 true 使其可控制。 有关示例，请参阅 如何：在情节提要启动后控制情节提要。

Begin(FrameworkElement, FrameworkTemplate, HandoffBehavior, Boolean)

将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject, System::Windows::FrameworkTemplate ^ frameworkTemplate, System::Windows::Media::Animation::HandoffBehavior handoffBehavior, bool isControllable);

public void Begin (System.Windows.FrameworkElement containingObject, System.Windows.FrameworkTemplate frameworkTemplate, System.Windows.Media.Animation.HandoffBehavior handoffBehavior, bool isControllable);

member this.Begin : System.Windows.FrameworkElement * System.Windows.FrameworkTemplate * System.Windows.Media.Animation.HandoffBehavior * bool -> unit

Public Sub Begin (containingObject As FrameworkElement, frameworkTemplate As FrameworkTemplate, handoffBehavior As HandoffBehavior, isControllable As Boolean)

参数

containingObject

FrameworkElement

已应用指定 frameworkTemplate 的对象。 不带 TargetName 的动画将应用于 containingObject。

frameworkTemplate

FrameworkTemplate

要进行动画处理的模板。

handoffBehavior

HandoffBehavior

新动画应用于与任何当前动画交互的行为。

isControllable

Boolean

true 情节提要是否应以交互方式控制;否则，false。

注解

若要以交互方式控制此情节提要，必须在调用用于开始情节提要的交互式方法时指定相同的 containingObject

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

使用 Compose HandoffBehavior

使用 ComposeHandoffBehavior将 Storyboard、AnimationTimeline或 AnimationClock 应用于属性时，以前与该属性关联的任何 Clock 对象将继续使用系统资源;计时系统不会自动删除这些时钟。

若要避免使用 Compose应用大量时钟时出现性能问题，应在动画属性完成后从动画属性中删除撰写时钟。 可通过多种方式删除时钟。

• 若要从属性中删除所有时钟，请使用动画对象的 ApplyAnimationClock(DependencyProperty, AnimationClock) 或 BeginAnimation(DependencyProperty, AnimationTimeline) 方法。 指定作为第一个参数进行动画处理的属性，null 为第二个参数。 这会从属性中删除所有动画时钟。

• 若要从时钟列表中删除特定 AnimationClock，请使用 AnimationClock 的 Controller 属性检索 ClockController，然后调用 ClockController的 Remove 方法。 这通常在时钟的 Completed 事件处理程序中完成。 请注意，只有根时钟可由 ClockController控制;子时钟的 Controller 属性返回 null。 另请注意，如果时钟的有效持续时间永久，则不会调用 Completed 事件。 在这种情况下，用户必须确定何时调用 Remove。

这主要是对生存期较长的对象进行动画的问题。 当对象被垃圾回收时，其时钟也会断开连接并回收垃圾。

有关时钟对象的详细信息，请参阅 动画和计时系统概述。

Begin(FrameworkElement, HandoffBehavior, Boolean)

将与此 Storyboard 关联的动画应用于其目标并启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject, System::Windows::Media::Animation::HandoffBehavior handoffBehavior, bool isControllable);

public void Begin (System.Windows.FrameworkElement containingObject, System.Windows.Media.Animation.HandoffBehavior handoffBehavior, bool isControllable);

member this.Begin : System.Windows.FrameworkElement * System.Windows.Media.Animation.HandoffBehavior * bool -> unit

Public Sub Begin (containingObject As FrameworkElement, handoffBehavior As HandoffBehavior, isControllable As Boolean)

参数

containingObject

FrameworkElement

包含在与此情节提要动画目标相同的名称范围内的对象。 没有指定 TargetName 的动画将应用于 containingObject。

handoffBehavior

HandoffBehavior

新动画应用于与任何当前动画交互的行为。

isControllable

Boolean

声明动画是否可控制（可以暂停）一旦启动。

示例

以下示例演示如何创建可控制的情节提要。

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

namespace SDKSample
{

    public class ControllableStoryboardExample : Page
    {
        private Storyboard myStoryboard;

        public ControllableStoryboardExample()
        {

            // Create a name scope for the page.

            NameScope.SetNameScope(this, new NameScope()); 
 
            this.WindowTitle = "Controllable Storyboard Example";
            StackPanel myStackPanel = new StackPanel();
            myStackPanel.Margin = new Thickness(10);

            // Create a rectangle.
            Rectangle myRectangle = new Rectangle();
            myRectangle.Name = "myRectangle";

            // Assign the rectangle a name by 
            // registering it with the page, so that
            // it can be targeted by storyboard
            // animations.
            this.RegisterName(myRectangle.Name, myRectangle);
            myRectangle.Width = 100;
            myRectangle.Height = 100;
            myRectangle.Fill = Brushes.Blue;
            myStackPanel.Children.Add(myRectangle);

            //
            // Create an animation and a storyboard to animate the
            // rectangle.
            //
            DoubleAnimation myDoubleAnimation = new DoubleAnimation();
            myDoubleAnimation.From = 1.0;
            myDoubleAnimation.To = 0.0;
            myDoubleAnimation.Duration = new Duration(TimeSpan.FromMilliseconds(5000));
            myDoubleAnimation.AutoReverse = true;

            // Create the storyboard.
            myStoryboard = new Storyboard();
            myStoryboard.Children.Add(myDoubleAnimation);
            Storyboard.SetTargetName(myDoubleAnimation, myRectangle.Name);
            Storyboard.SetTargetProperty(myDoubleAnimation, new PropertyPath(Rectangle.OpacityProperty));

            //
            // Create some buttons to control the storyboard
            // and a panel to contain them.
            //
            StackPanel buttonPanel = new StackPanel();
            buttonPanel.Orientation = Orientation.Horizontal;
            Button beginButton = new Button();
            beginButton.Content = "Begin";
            beginButton.Click += new RoutedEventHandler(beginButton_Clicked);
            buttonPanel.Children.Add(beginButton);
            Button pauseButton = new Button();
            pauseButton.Content = "Pause";
            pauseButton.Click += new RoutedEventHandler(pauseButton_Clicked);
            buttonPanel.Children.Add(pauseButton);
            Button resumeButton = new Button();
            resumeButton.Content = "Resume";
            resumeButton.Click += new RoutedEventHandler(resumeButton_Clicked);
            buttonPanel.Children.Add(resumeButton);
            Button skipToFillButton = new Button();
            skipToFillButton.Content = "Skip to Fill";
            skipToFillButton.Click += new RoutedEventHandler(skipToFillButton_Clicked);
            buttonPanel.Children.Add(skipToFillButton);
            Button setSpeedRatioButton = new Button();
            setSpeedRatioButton.Content = "Triple Speed";
            setSpeedRatioButton.Click += new RoutedEventHandler(setSpeedRatioButton_Clicked);
            buttonPanel.Children.Add(setSpeedRatioButton);
            Button stopButton = new Button();
            stopButton.Content = "Stop";
            stopButton.Click += new RoutedEventHandler(stopButton_Clicked);
            buttonPanel.Children.Add(stopButton);
            myStackPanel.Children.Add(buttonPanel);
            this.Content = myStackPanel;        
        }

        // Begins the storyboard.
        private void beginButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Specifying "true" as the second Begin parameter
            // makes this storyboard controllable.
            myStoryboard.Begin(this, true);
        }

        // Pauses the storyboard.
        private void pauseButton_Clicked(object sender, RoutedEventArgs args)
        {
            myStoryboard.Pause(this);
        }

        // Resumes the storyboard.
        private void resumeButton_Clicked(object sender, RoutedEventArgs args)
        {
            myStoryboard.Resume(this);
        }

        // Advances the storyboard to its fill period.
        private void skipToFillButton_Clicked(object sender, RoutedEventArgs args)
        {
            myStoryboard.SkipToFill(this);
        }

        // Updates the storyboard's speed.
        private void setSpeedRatioButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Makes the storyboard progress three times as fast as normal.
            myStoryboard.SetSpeedRatio(this, 3);
        }

        // Stops the storyboard.
        private void stopButton_Clicked(object sender, RoutedEventArgs args)
        {
            myStoryboard.Stop(this);
        }         
    }
}

Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Shapes
Imports System.Windows.Media
Imports System.Windows.Media.Animation

Namespace SDKSample

    Public Class ControllableStoryboardExample
        Inherits Page
        Private myStoryboard As Storyboard

        Public Sub New()

            ' Create a name scope for the page.

            NameScope.SetNameScope(Me, New NameScope())

            Me.WindowTitle = "Controllable Storyboard Example"
            Dim myStackPanel As New StackPanel()
            myStackPanel.Margin = New Thickness(10)

            ' Create a rectangle.
            Dim myRectangle As New Rectangle()
            myRectangle.Name = "myRectangle"

            ' Assign the rectangle a name by 
            ' registering it with the page, so that
            ' it can be targeted by storyboard
            ' animations.
            Me.RegisterName(myRectangle.Name, myRectangle)
            myRectangle.Width = 100
            myRectangle.Height = 100
            myRectangle.Fill = Brushes.Blue
            myStackPanel.Children.Add(myRectangle)

            '
            ' Create an animation and a storyboard to animate the
            ' rectangle.
            '
            Dim myDoubleAnimation As New DoubleAnimation()
            myDoubleAnimation.From = 1.0
            myDoubleAnimation.To = 0.0
            myDoubleAnimation.Duration = New Duration(TimeSpan.FromMilliseconds(5000))
            myDoubleAnimation.AutoReverse = True

            ' Create the storyboard.
            myStoryboard = New Storyboard()
            myStoryboard.Children.Add(myDoubleAnimation)
            Storyboard.SetTargetName(myDoubleAnimation, myRectangle.Name)
            Storyboard.SetTargetProperty(myDoubleAnimation, New PropertyPath(Rectangle.OpacityProperty))

            '
            ' Create some buttons to control the storyboard
            ' and a panel to contain them.
            '
            Dim buttonPanel As New StackPanel()
            buttonPanel.Orientation = Orientation.Horizontal
            Dim beginButton As New Button()
            beginButton.Content = "Begin"
            AddHandler beginButton.Click, AddressOf beginButton_Clicked
            buttonPanel.Children.Add(beginButton)
            Dim pauseButton As New Button()
            pauseButton.Content = "Pause"
            AddHandler pauseButton.Click, AddressOf pauseButton_Clicked
            buttonPanel.Children.Add(pauseButton)
            Dim resumeButton As New Button()
            resumeButton.Content = "Resume"
            AddHandler resumeButton.Click, AddressOf resumeButton_Clicked
            buttonPanel.Children.Add(resumeButton)
            Dim skipToFillButton As New Button()
            skipToFillButton.Content = "Skip to Fill"
            AddHandler skipToFillButton.Click, AddressOf skipToFillButton_Clicked
            buttonPanel.Children.Add(skipToFillButton)
            Dim setSpeedRatioButton As New Button()
            setSpeedRatioButton.Content = "Triple Speed"
            AddHandler setSpeedRatioButton.Click, AddressOf setSpeedRatioButton_Clicked
            buttonPanel.Children.Add(setSpeedRatioButton)
            Dim stopButton As New Button()
            stopButton.Content = "Stop"
            AddHandler stopButton.Click, AddressOf stopButton_Clicked
            buttonPanel.Children.Add(stopButton)
            myStackPanel.Children.Add(buttonPanel)
            Me.Content = myStackPanel


        End Sub

        ' Begins the storyboard.
        Private Sub beginButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            ' Specifying "true" as the second Begin parameter
            ' makes this storyboard controllable.
            myStoryboard.Begin(Me, True)

        End Sub

        ' Pauses the storyboard.
        Private Sub pauseButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            myStoryboard.Pause(Me)

        End Sub

        ' Resumes the storyboard.
        Private Sub resumeButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            myStoryboard.Resume(Me)

        End Sub

        ' Advances the storyboard to its fill period.
        Private Sub skipToFillButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            myStoryboard.SkipToFill(Me)

        End Sub

        ' Updates the storyboard's speed.
        Private Sub setSpeedRatioButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            ' Makes the storyboard progress three times as fast as normal.
            myStoryboard.SetSpeedRatio(Me, 3)

        End Sub

        ' Stops the storyboard.
        Private Sub stopButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            myStoryboard.Stop(Me)

        End Sub

    End Class

End Namespace

下一个示例使用 SnapshotAndReplaceHandoffBehavior 在用户左键单击时进行动画处理，并在用户右键单击时 ComposeHandoffBehavior。

/*

   This sample animates the position of an ellipse when 
   the user clicks within the main border. If the user
   left-clicks, the SnapshotAndReplace HandoffBehavior
   is used when applying the animations. If the user
   right-clicks, the Compose HandoffBehavior is used
   instead.

*/

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

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{

    // Create the demonstration.
    public class FrameworkElementStoryboardHandoffBehaviorExample : Page {

        private Border containerBorder;
        private Ellipse interactiveEllipse;
        private Storyboard theStoryboard;
        private DoubleAnimation xAnimation;
        private DoubleAnimation yAnimation;
        
        public FrameworkElementStoryboardHandoffBehaviorExample()
        {
        
            WindowTitle = "Interactive Animation Example";
            
            // Create a name scope for the page.
            NameScope.SetNameScope(this, new NameScope());  
            
            DockPanel myPanel = new DockPanel();
            myPanel.Margin = new Thickness(20.0);            
    
            containerBorder = new Border();
            containerBorder.Background = Brushes.White;
            containerBorder.BorderBrush = Brushes.Black;
            containerBorder.BorderThickness = new Thickness(2.0); 
            containerBorder.VerticalAlignment = VerticalAlignment.Stretch;
            
            interactiveEllipse = new Ellipse();
            interactiveEllipse.Fill = Brushes.Lime;
            interactiveEllipse.Stroke = Brushes.Black;
            interactiveEllipse.StrokeThickness = 2.0;
            interactiveEllipse.Width = 25;
            interactiveEllipse.Height = 25;
            interactiveEllipse.HorizontalAlignment = HorizontalAlignment.Left;
            interactiveEllipse.VerticalAlignment = VerticalAlignment.Top;

            TranslateTransform interactiveTranslateTransform = new TranslateTransform();       
            this.RegisterName("InteractiveTranslateTransform", interactiveTranslateTransform);
            
            interactiveEllipse.RenderTransform = 
                interactiveTranslateTransform;
                
            xAnimation = new DoubleAnimation();
            xAnimation.Duration = TimeSpan.FromSeconds(4);
            yAnimation = xAnimation.Clone();
            Storyboard.SetTargetName(xAnimation, "InteractiveTranslateTransform");
            Storyboard.SetTargetProperty(xAnimation, new PropertyPath(TranslateTransform.XProperty));
            Storyboard.SetTargetName(yAnimation, "InteractiveTranslateTransform");
            Storyboard.SetTargetProperty(yAnimation, new PropertyPath(TranslateTransform.YProperty));            
            
            theStoryboard = new Storyboard();
            theStoryboard.Children.Add(xAnimation);
            theStoryboard.Children.Add(yAnimation);

            containerBorder.MouseLeftButtonDown += 
                new MouseButtonEventHandler(border_mouseLeftButtonDown);
            containerBorder.MouseRightButtonDown += 
                new MouseButtonEventHandler(border_mouseRightButtonDown);                
            
            containerBorder.Child = interactiveEllipse;
            myPanel.Children.Add(containerBorder);
            this.Content = myPanel;
        }

        // When the user left-clicks, use the 
        // SnapshotAndReplace HandoffBehavior when applying the animation.        
        private void border_mouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            Point clickPoint = Mouse.GetPosition(containerBorder);
            
            // Set the target point so the center of the ellipse
            // ends up at the clicked point.
            Point targetPoint = new Point();
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2;
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2;  
            
            // Animate to the target point.
            xAnimation.To = targetPoint.X;
            yAnimation.To = targetPoint.Y;
            theStoryboard.Begin(this, HandoffBehavior.SnapshotAndReplace);

            // Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Lime;
        }
        
        // When the user right-clicks, use the 
        // Compose HandoffBehavior when applying the animation.
        private void border_mouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            // Find the point where the use clicked.
            Point clickPoint = Mouse.GetPosition(containerBorder);
            
            // Set the target point so the center of the ellipse
            // ends up at the clicked point.
            Point targetPoint = new Point();
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2;
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2;
 
            // Animate to the target point.
            xAnimation.To = targetPoint.X;
            yAnimation.To = targetPoint.Y;
            theStoryboard.Begin(this, HandoffBehavior.Compose);
                
            // Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Orange;
        }
    }
}

'
'
'   This sample animates the position of an ellipse when 
'   the user clicks within the main border. If the user
'   left-clicks, the SnapshotAndReplace HandoffBehavior
'   is used when applying the animations. If the user
'   right-clicks, the Compose HandoffBehavior is used
'   instead.
'
'


Imports System.Windows
Imports System.Windows.Navigation
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.Windows.Shapes
Imports System.Windows.Controls
Imports System.Windows.Input

Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards

    ' Create the demonstration.
    Public Class FrameworkElementStoryboardHandoffBehaviorExample
        Inherits Page


        Private containerBorder As Border
        Private interactiveEllipse As Ellipse
        Private theStoryboard As Storyboard
        Private xAnimation As DoubleAnimation
        Private yAnimation As DoubleAnimation

        Public Sub New()

            WindowTitle = "Interactive Animation Example"

            ' Create a name scope for the page.
            NameScope.SetNameScope(Me, New NameScope())

            Dim myPanel As New DockPanel()
            myPanel.Margin = New Thickness(20.0)

            containerBorder = New Border()
            containerBorder.Background = Brushes.White
            containerBorder.BorderBrush = Brushes.Black
            containerBorder.BorderThickness = New Thickness(2.0)
            containerBorder.VerticalAlignment = VerticalAlignment.Stretch

            interactiveEllipse = New Ellipse()
            With interactiveEllipse
                .Fill = Brushes.Lime
                .Stroke = Brushes.Black
                .StrokeThickness = 2.0
                .Width = 25
                .Height = 25
                .HorizontalAlignment = HorizontalAlignment.Left
                .VerticalAlignment = VerticalAlignment.Top
            End With

            Dim interactiveTranslateTransform As New TranslateTransform()
            Me.RegisterName("InteractiveTranslateTransform", interactiveTranslateTransform)

            interactiveEllipse.RenderTransform = interactiveTranslateTransform

            xAnimation = New DoubleAnimation()
            xAnimation.Duration = TimeSpan.FromSeconds(4)
            yAnimation = xAnimation.Clone()
            Storyboard.SetTargetName(xAnimation, "InteractiveTranslateTransform")
            Storyboard.SetTargetProperty(xAnimation, New PropertyPath(TranslateTransform.XProperty))
            Storyboard.SetTargetName(yAnimation, "InteractiveTranslateTransform")
            Storyboard.SetTargetProperty(yAnimation, New PropertyPath(TranslateTransform.YProperty))

            theStoryboard = New Storyboard()
            theStoryboard.Children.Add(xAnimation)
            theStoryboard.Children.Add(yAnimation)


            AddHandler containerBorder.MouseLeftButtonDown, AddressOf border_mouseLeftButtonDown
            AddHandler containerBorder.MouseRightButtonDown, AddressOf border_mouseRightButtonDown

            containerBorder.Child = interactiveEllipse
            myPanel.Children.Add(containerBorder)
            Me.Content = myPanel
        End Sub


        ' When the user left-clicks, use the 
        ' SnapshotAndReplace HandoffBehavior when applying the animation.        
        Private Sub border_mouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)

            Dim clickPoint As Point = Mouse.GetPosition(containerBorder)

            ' Set the target point so the center of the ellipse
            ' ends up at the clicked point.
            Dim targetPoint As New Point()
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2

            ' Animate to the target point.
            xAnimation.To = targetPoint.X
            yAnimation.To = targetPoint.Y
            theStoryboard.Begin(Me, HandoffBehavior.SnapshotAndReplace)


            ' Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Lime

        End Sub

        ' When the user right-clicks, use the 
        ' Compose HandoffBehavior when applying the animation.
        Private Sub border_mouseRightButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)

            ' Find the point where the use clicked.
            Dim clickPoint As Point = Mouse.GetPosition(containerBorder)

            ' Set the target point so the center of the ellipse
            ' ends up at the clicked point.
            Dim targetPoint As New Point()
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2

            ' Animate to the target point.
            xAnimation.To = targetPoint.X
            yAnimation.To = targetPoint.Y
            theStoryboard.Begin(Me, HandoffBehavior.Compose)

            ' Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Orange


        End Sub

    End Class

End Namespace

注解

若要以交互方式控制此情节提要，必须在调用用于开始情节提要的交互式方法时使用相同的 containingObject 参数

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

使用 Compose HandoffBehavior

使用 ComposeHandoffBehavior将 Storyboard、AnimationTimeline或 AnimationClock 应用于属性时，以前与该属性关联的任何 Clock 对象将继续使用系统资源;计时系统不会自动删除这些时钟。

若要避免使用 Compose应用大量时钟时出现性能问题，应在动画属性完成后从动画属性中删除撰写时钟。 可通过多种方式删除时钟。

• 若要从属性中删除所有时钟，请使用动画对象的 ApplyAnimationClock(DependencyProperty, AnimationClock) 或 BeginAnimation(DependencyProperty, AnimationTimeline) 方法。 指定作为第一个参数进行动画处理的属性，null 为第二个参数。 这会从属性中删除所有动画时钟。

• 若要从时钟列表中删除特定 AnimationClock，请使用 AnimationClock 的 Controller 属性检索 ClockController，然后调用 ClockController的 Remove 方法。 这通常在时钟的 Completed 事件处理程序中完成。 请注意，只有根时钟可由 ClockController控制;子时钟的 Controller 属性返回 null。 另请注意，如果时钟的有效持续时间永久，则不会调用 Completed 事件。 在这种情况下，用户必须确定何时调用 Remove。

这主要是对生存期较长的对象进行动画的问题。 当对象被垃圾回收时，其时钟也会断开连接并回收垃圾。

有关时钟对象的详细信息，请参阅 动画和计时系统概述。

Begin(FrameworkElement, FrameworkTemplate, HandoffBehavior)

将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject, System::Windows::FrameworkTemplate ^ frameworkTemplate, System::Windows::Media::Animation::HandoffBehavior handoffBehavior);

public void Begin (System.Windows.FrameworkElement containingObject, System.Windows.FrameworkTemplate frameworkTemplate, System.Windows.Media.Animation.HandoffBehavior handoffBehavior);

member this.Begin : System.Windows.FrameworkElement * System.Windows.FrameworkTemplate * System.Windows.Media.Animation.HandoffBehavior -> unit

Public Sub Begin (containingObject As FrameworkElement, frameworkTemplate As FrameworkTemplate, handoffBehavior As HandoffBehavior)

参数

containingObject

FrameworkElement

已应用指定 frameworkTemplate 的对象。 不带 TargetName 的动画将应用于 containingObject。

frameworkTemplate

FrameworkTemplate

要进行动画处理的模板。

handoffBehavior

HandoffBehavior

新动画应用于与任何当前动画交互的行为。

注解

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

使用 Compose HandoffBehavior

使用 ComposeHandoffBehavior将 Storyboard、AnimationTimeline或 AnimationClock 应用于属性时，以前与该属性关联的任何 Clock 对象将继续使用系统资源;计时系统不会自动删除这些时钟。

若要避免使用 Compose应用大量时钟时出现性能问题，应在动画属性完成后从动画属性中删除撰写时钟。 可通过多种方式删除时钟。

• 若要从属性中删除所有时钟，请使用动画对象的 ApplyAnimationClock(DependencyProperty, AnimationClock) 或 BeginAnimation(DependencyProperty, AnimationTimeline) 方法。 指定作为第一个参数进行动画处理的属性，null 为第二个参数。 这会从属性中删除所有动画时钟。

• 若要从时钟列表中删除特定 AnimationClock，请使用 AnimationClock 的 Controller 属性检索 ClockController，然后调用 ClockController的 Remove 方法。 这通常在时钟的 Completed 事件处理程序中完成。 请注意，只有根时钟可由 ClockController控制;子时钟的 Controller 属性返回 null。 另请注意，如果时钟的有效持续时间永久，则不会调用 Completed 事件。 在这种情况下，用户必须确定何时调用 Remove。

这主要是对生存期较长的对象进行动画的问题。 当对象被垃圾回收时，其时钟也会断开连接并回收垃圾。

有关时钟对象的详细信息，请参阅 动画和计时系统概述。

Begin(FrameworkElement, FrameworkTemplate, Boolean)

将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject, System::Windows::FrameworkTemplate ^ frameworkTemplate, bool isControllable);

public void Begin (System.Windows.FrameworkElement containingObject, System.Windows.FrameworkTemplate frameworkTemplate, bool isControllable);

member this.Begin : System.Windows.FrameworkElement * System.Windows.FrameworkTemplate * bool -> unit

Public Sub Begin (containingObject As FrameworkElement, frameworkTemplate As FrameworkTemplate, isControllable As Boolean)

参数

containingObject

FrameworkElement

已应用指定 frameworkTemplate 的对象。 不带 TargetName 的动画将应用于 containingObject。

frameworkTemplate

FrameworkTemplate

要进行动画处理的模板。

isControllable

Boolean

true 情节提要是否应以交互方式控制;否则，false。

注解

如果目标属性已进行动画处理，则会使用 SnapshotAndReplace 交接行为替换它们。

若要以交互方式控制此情节提要，必须在调用用于开始情节提要的交互式方法时指定相同的 containingObject

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

Begin(FrameworkContentElement, HandoffBehavior, Boolean)

将与此 Storyboard 关联的动画应用于其目标，并使用指定的 HandoffBehavior启动它们。

public:
 void Begin(System::Windows::FrameworkContentElement ^ containingObject, System::Windows::Media::Animation::HandoffBehavior handoffBehavior, bool isControllable);

public void Begin (System.Windows.FrameworkContentElement containingObject, System.Windows.Media.Animation.HandoffBehavior handoffBehavior, bool isControllable);

member this.Begin : System.Windows.FrameworkContentElement * System.Windows.Media.Animation.HandoffBehavior * bool -> unit

Public Sub Begin (containingObject As FrameworkContentElement, handoffBehavior As HandoffBehavior, isControllable As Boolean)

参数

containingObject

FrameworkContentElement

包含在与此情节提要动画目标相同的名称范围内的对象。 没有指定 TargetName 的动画将应用于 containingObject。

handoffBehavior

HandoffBehavior

新动画应用于与任何当前动画交互的行为。

isControllable

Boolean

声明动画是否可控制（可以暂停）一旦启动。

示例

以下示例使用可控制的情节提要对 TextEffect进行动画处理。 TextEffect 包含在 FrameworkContentElement的名称范围内。

/*
    This example shows how to control
    a storyboard after it has started.

*/

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

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{
    public class FrameworkContentElementControlStoryboardExample : FlowDocument
    {
    
        private Storyboard myStoryboard;
        
        public FrameworkContentElementControlStoryboardExample()
        {
        
            // Create a name scope for the document.
            NameScope.SetNameScope(this, new NameScope());        
            this.Background = Brushes.White;
            
            // Create a run of text.
            Run theText = new Run( 
                "Lorem ipsum dolor sit amet, consectetuer adipiscing elit." + 
                "Ut non lacus. Nullam a ligula id leo adipiscing ornare." +
                " Duis mattis. ");   
                
            // Create a TextEffect
            TextEffect animatedSpecialEffect = new TextEffect();
            animatedSpecialEffect.Foreground = Brushes.OrangeRed;
            animatedSpecialEffect.PositionStart = 0;
            animatedSpecialEffect.PositionCount = 0;
            
            // Assign the TextEffect a name by 
            // registering it with the page, so that
            // it can be targeted by storyboard
            // animations            
            this.RegisterName("animatedSpecialEffect", animatedSpecialEffect);  
            
            // Apply the text effect to the run.
            theText.TextEffects = new TextEffectCollection();
            theText.TextEffects.Add(animatedSpecialEffect);
            
            // Create a paragraph to contain the run.
            Paragraph animatedParagraph = new Paragraph(theText);
            animatedParagraph.Background = Brushes.LightGray;
            animatedParagraph.Padding = new Thickness(20);
   
            this.Blocks.Add(animatedParagraph);            
            BlockUIContainer controlsContainer = new BlockUIContainer();                
            
            //
            // Create an animation and a storyboard to animate the
            // text effect.
            //
            Int32Animation countAnimation = 
                new Int32Animation(0, 127, TimeSpan.FromSeconds(10)); 
            Storyboard.SetTargetName(countAnimation, "animatedSpecialEffect");
            Storyboard.SetTargetProperty(countAnimation, 
                new PropertyPath(TextEffect.PositionCountProperty));
            myStoryboard = new Storyboard();
            myStoryboard.Children.Add(countAnimation);
            
            //
            // Create some buttons to control the storyboard
            // and a panel to contain them.
            //
            StackPanel buttonPanel = new StackPanel();
            buttonPanel.Orientation = Orientation.Vertical;
            Button beginButton = new Button();
            beginButton.Content = "Begin";
            beginButton.Click += new RoutedEventHandler(beginButton_Clicked);            
            buttonPanel.Children.Add(beginButton);
            Button pauseButton = new Button();
            pauseButton.Content = "Pause";
            pauseButton.Click +=new RoutedEventHandler(pauseButton_Clicked);
            buttonPanel.Children.Add(pauseButton);
            Button resumeButton = new Button();
            resumeButton.Content = "Resume";
            resumeButton.Click +=new RoutedEventHandler(resumeButton_Clicked);
            buttonPanel.Children.Add(resumeButton);
            Button skipToFillButton = new Button();
            skipToFillButton.Content = "Skip to Fill";
            skipToFillButton.Click +=new RoutedEventHandler(skipToFillButton_Clicked);
            buttonPanel.Children.Add(skipToFillButton);
            Button setSpeedRatioButton = new Button();
            setSpeedRatioButton.Content = "Triple Speed";
            setSpeedRatioButton.Click +=new RoutedEventHandler(setSpeedRatioButton_Clicked);
            buttonPanel.Children.Add(setSpeedRatioButton);
            Button stopButton = new Button();
            stopButton.Content = "Stop";
            stopButton.Click +=new RoutedEventHandler(stopButton_Clicked);
            buttonPanel.Children.Add(stopButton);
            Button removeButton = new Button();
            removeButton.Content = "Remove";
            removeButton.Click +=new RoutedEventHandler(removeButton_Clicked);
            buttonPanel.Children.Add(removeButton); 
   
            controlsContainer.Child = buttonPanel; 
            this.Blocks.Add(controlsContainer);
        }
        
        // Begins the storyboard.
        private void beginButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Specifying "true" as the second Begin parameter
            // makes this storyboard controllable.
            myStoryboard.Begin(this, true);          
        }
        
        // Pauses the storyboard.
        private void pauseButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Pause(this);          
        }
        
        // Resumes the storyboard.
        private void resumeButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Resume(this);          
        }     
        
        // Advances the storyboard to its fill period.
        private void skipToFillButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.SkipToFill(this);          
        } 
        
        // Updates the storyboard's speed.
        private void setSpeedRatioButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Makes the storyboard progress three times as fast as normal.
            myStoryboard.SetSpeedRatio(this, 3);          
        }           
        
        // Stops the storyboard.
        private void stopButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Stop(this);          
        }     
        
        // Removes the storyboard.
        private void removeButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Remove(this);          
        }           
    }
}

'
'    This example shows how to control
'    a storyboard after it has started.
'
'


Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes
Imports System.Windows.Media.Animation
Imports System.Windows.Documents


Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
    Public Class FrameworkContentElementControlStoryboardExample
        Inherits FlowDocument

        Private myStoryboard As Storyboard

        Public Sub New()

            ' Create a name scope for the document.
            NameScope.SetNameScope(Me, New NameScope())
            Me.Background = Brushes.White

            ' Create a run of text.
            Dim theText As New Run("Lorem ipsum dolor sit amet, consectetuer adipiscing elit." & "Ut non lacus. Nullam a ligula id leo adipiscing ornare." & " Duis mattis. ")

            ' Create a TextEffect
            Dim animatedSpecialEffect As New TextEffect()
            animatedSpecialEffect.Foreground = Brushes.OrangeRed
            animatedSpecialEffect.PositionStart = 0
            animatedSpecialEffect.PositionCount = 0

            ' Assign the TextEffect a name by 
            ' registering it with the page, so that
            ' it can be targeted by storyboard
            ' animations            
            Me.RegisterName("animatedSpecialEffect", animatedSpecialEffect)

            ' Apply the text effect to the run.
            theText.TextEffects = New TextEffectCollection()
            theText.TextEffects.Add(animatedSpecialEffect)

            ' Create a paragraph to contain the run.
            Dim animatedParagraph As New Paragraph(theText)
            animatedParagraph.Background = Brushes.LightGray
            animatedParagraph.Padding = New Thickness(20)

            Me.Blocks.Add(animatedParagraph)
            Dim controlsContainer As New BlockUIContainer()

            '
            ' Create an animation and a storyboard to animate the
            ' text effect.
            '
            Dim countAnimation As New Int32Animation(0, 127, TimeSpan.FromSeconds(10))
            Storyboard.SetTargetName(countAnimation, "animatedSpecialEffect")
            Storyboard.SetTargetProperty(countAnimation, New PropertyPath(TextEffect.PositionCountProperty))
            myStoryboard = New Storyboard()
            myStoryboard.Children.Add(countAnimation)

            '
            ' Create some buttons to control the storyboard
            ' and a panel to contain them.
            '
            Dim buttonPanel As New StackPanel()
            buttonPanel.Orientation = Orientation.Vertical
            Dim beginButton As New Button()
            beginButton.Content = "Begin"
            AddHandler beginButton.Click, AddressOf beginButton_Clicked
            buttonPanel.Children.Add(beginButton)
            Dim pauseButton As New Button()
            pauseButton.Content = "Pause"
            AddHandler pauseButton.Click, AddressOf pauseButton_Clicked
            buttonPanel.Children.Add(pauseButton)
            Dim resumeButton As New Button()
            resumeButton.Content = "Resume"
            AddHandler resumeButton.Click, AddressOf resumeButton_Clicked
            buttonPanel.Children.Add(resumeButton)
            Dim skipToFillButton As New Button()
            skipToFillButton.Content = "Skip to Fill"
            AddHandler skipToFillButton.Click, AddressOf skipToFillButton_Clicked
            buttonPanel.Children.Add(skipToFillButton)
            Dim setSpeedRatioButton As New Button()
            setSpeedRatioButton.Content = "Triple Speed"
            AddHandler setSpeedRatioButton.Click, AddressOf setSpeedRatioButton_Clicked
            buttonPanel.Children.Add(setSpeedRatioButton)
            Dim stopButton As New Button()
            stopButton.Content = "Stop"
            AddHandler stopButton.Click, AddressOf stopButton_Clicked
            buttonPanel.Children.Add(stopButton)
            Dim removeButton As New Button()
            removeButton.Content = "Remove"
            AddHandler removeButton.Click, AddressOf removeButton_Clicked
            buttonPanel.Children.Add(removeButton)

            controlsContainer.Child = buttonPanel
            Me.Blocks.Add(controlsContainer)

        End Sub

        ' Begins the storyboard.
        Private Sub beginButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            ' Specifying "true" as the second Begin parameter
            ' makes this storyboard controllable.
            myStoryboard.Begin(Me, True)

        End Sub

        ' Pauses the storyboard.
        Private Sub pauseButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Pause(Me)

        End Sub

        ' Resumes the storyboard.
        Private Sub resumeButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Resume(Me)

        End Sub

        ' Advances the storyboard to its fill period.
        Private Sub skipToFillButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.SkipToFill(Me)

        End Sub

        ' Updates the storyboard's speed.
        Private Sub setSpeedRatioButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            ' Makes the storyboard progress three times as fast as normal.
            myStoryboard.SetSpeedRatio(Me, 3)

        End Sub

        ' Stops the storyboard.
        Private Sub stopButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Stop(Me)

        End Sub

        ' Removes the storyboard.
        Private Sub removeButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Remove(Me)

        End Sub

    End Class
End Namespace

下一个示例使用 SnapshotAndReplaceHandoffBehavior 在用户左键单击时进行动画处理，并在用户右键单击时 ComposeHandoffBehavior。

/*
    This example shows how to animate
    a FrameworkContentElement with a storyboard.

*/

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

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{
    public class FrameworkContentElementStoryboardWithHandoffBehaviorExample : 
        FlowDocument
    {
    
        private Storyboard myStoryboard;
        DoubleAnimation xAnimation;
        DoubleAnimation yAnimation;
        
        public FrameworkContentElementStoryboardWithHandoffBehaviorExample()
        {
        
            // Create a name scope for the document.
            NameScope.SetNameScope(this, new NameScope());        
            this.Background = Brushes.Orange;
            
            // Create a run of text.
            Run theText = new Run( 
                "Lorem ipsum dolor sit amet, consectetuer adipiscing elit.");   
                
            // Create a TextEffect
            TextEffect animatedSpecialEffect = new TextEffect();
            animatedSpecialEffect.Foreground = Brushes.OrangeRed;
            animatedSpecialEffect.PositionStart = 0;
            animatedSpecialEffect.PositionCount = 20;
            
            TranslateTransform animatedTransform = 
                new TranslateTransform();
                
            // Assign the transform a name by 
            // registering it with the page, so that
            // it can be targeted by storyboard
            // animations.      
            this.RegisterName("animatedTransform", animatedTransform);             
            animatedSpecialEffect.Transform = animatedTransform;

            // Apply the text effect to the run.
            theText.TextEffects = new TextEffectCollection();
            theText.TextEffects.Add(animatedSpecialEffect);

            // Create a paragraph to contain the run.
            Paragraph animatedParagraph = new Paragraph(theText);
            animatedParagraph.Background = Brushes.LightGray;           
   
            this.Blocks.Add(animatedParagraph);                           
            
            //
            // Create a storyboard to animate the
            // text effect's transform.
            //
            myStoryboard = new Storyboard();
            
            xAnimation = new DoubleAnimation();  
            xAnimation.Duration = TimeSpan.FromSeconds(5);                        
            Storyboard.SetTargetName(xAnimation, "animatedTransform");
            Storyboard.SetTargetProperty(xAnimation, 
                new PropertyPath(TranslateTransform.XProperty));      
            myStoryboard.Children.Add(xAnimation);
            
            yAnimation = new DoubleAnimation();
            yAnimation.Duration = TimeSpan.FromSeconds(5);           
            Storyboard.SetTargetName(yAnimation, "animatedTransform");
            Storyboard.SetTargetProperty(yAnimation, 
                new PropertyPath(TranslateTransform.YProperty));      
            myStoryboard.Children.Add(yAnimation);            
            
            this.MouseLeftButtonDown += 
                new MouseButtonEventHandler(document_mouseLeftButtonDown);
            this.MouseRightButtonDown += 
                new MouseButtonEventHandler(document_mouseRightButtonDown);
        }

        // When the user left-clicks, use the 
        // SnapshotAndReplace HandoffBehavior when applying the animation.        
        private void document_mouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            Point clickPoint = Mouse.GetPosition(this);

            // Animate to the target point.
            xAnimation.To = clickPoint.X; 
            yAnimation.To = clickPoint.Y;

            try
            {
                myStoryboard.Begin(this, HandoffBehavior.SnapshotAndReplace);  
            }catch(Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
        
        // When the user right-clicks, use the 
        // Compose HandoffBehavior when applying the animation.
        private void document_mouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {

            Point clickPoint = Mouse.GetPosition(this);

            // Animate to the target point.
            xAnimation.To = clickPoint.X;
            yAnimation.To = clickPoint.Y;
            myStoryboard.Begin(this, HandoffBehavior.Compose);  
        }        
    }
}

'
'    This example shows how to animate
'    a FrameworkContentElement with a storyboard.
'
'


Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes
Imports System.Windows.Media.Animation
Imports System.Windows.Documents
Imports System.Windows.Input


Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
    Public Class FrameworkContentElementStoryboardWithHandoffBehaviorExample
        Inherits FlowDocument

        Private myStoryboard As Storyboard
        Private xAnimation As DoubleAnimation
        Private yAnimation As DoubleAnimation

        Public Sub New()

            ' Create a name scope for the document.
            NameScope.SetNameScope(Me, New NameScope())
            Me.Background = Brushes.Orange

            ' Create a run of text.
            Dim theText As New Run("Lorem ipsum dolor sit amet, consectetuer adipiscing elit.")

            ' Create a TextEffect
            Dim animatedSpecialEffect As New TextEffect()
            animatedSpecialEffect.Foreground = Brushes.OrangeRed
            animatedSpecialEffect.PositionStart = 0
            animatedSpecialEffect.PositionCount = 20

            Dim animatedTransform As New TranslateTransform()

            ' Assign the transform a name by 
            ' registering it with the page, so that
            ' it can be targeted by storyboard
            ' animations.      
            Me.RegisterName("animatedTransform", animatedTransform)
            animatedSpecialEffect.Transform = animatedTransform


            ' Apply the text effect to the run.
            theText.TextEffects = New TextEffectCollection()
            theText.TextEffects.Add(animatedSpecialEffect)


            ' Create a paragraph to contain the run.
            Dim animatedParagraph As New Paragraph(theText)
            animatedParagraph.Background = Brushes.LightGray

            Me.Blocks.Add(animatedParagraph)

            '
            ' Create a storyboard to animate the
            ' text effect's transform.
            '
            myStoryboard = New Storyboard()

            xAnimation = New DoubleAnimation()
            xAnimation.Duration = TimeSpan.FromSeconds(5)
            Storyboard.SetTargetName(xAnimation, "animatedTransform")
            Storyboard.SetTargetProperty(xAnimation, New PropertyPath(TranslateTransform.XProperty))
            myStoryboard.Children.Add(xAnimation)

            yAnimation = New DoubleAnimation()
            yAnimation.Duration = TimeSpan.FromSeconds(5)
            Storyboard.SetTargetName(yAnimation, "animatedTransform")
            Storyboard.SetTargetProperty(yAnimation, New PropertyPath(TranslateTransform.YProperty))
            myStoryboard.Children.Add(yAnimation)

            AddHandler MouseLeftButtonDown, AddressOf document_mouseLeftButtonDown
            AddHandler MouseRightButtonDown, AddressOf document_mouseRightButtonDown

        End Sub



        ' When the user left-clicks, use the 
        ' SnapshotAndReplace HandoffBehavior when applying the animation.        
        Private Sub document_mouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)

            Dim clickPoint As Point = Mouse.GetPosition(Me)


            ' Animate to the target point.
            xAnimation.To = clickPoint.X
            yAnimation.To = clickPoint.Y

            Try
                myStoryboard.Begin(Me, HandoffBehavior.SnapshotAndReplace)

            Catch ex As Exception
                MessageBox.Show(ex.ToString())
            End Try
        End Sub

        ' When the user right-clicks, use the 
        ' Compose HandoffBehavior when applying the animation.
        Private Sub document_mouseRightButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)


            Dim clickPoint As Point = Mouse.GetPosition(Me)

            ' Animate to the target point.
            xAnimation.To = clickPoint.X
            yAnimation.To = clickPoint.Y
            myStoryboard.Begin(Me, HandoffBehavior.Compose)


        End Sub





    End Class
End Namespace

注解

如果目标属性已进行动画处理，则使用指定的交接行为替换它们。

若要以交互方式控制此情节提要，必须在调用用于开始情节提要的交互式方法时指定相同的 containingObject

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

使用 Compose HandoffBehavior

使用 ComposeHandoffBehavior将 Storyboard、AnimationTimeline或 AnimationClock 应用于属性时，以前与该属性关联的任何 Clock 对象将继续使用系统资源;计时系统不会自动删除这些时钟。

若要避免使用 Compose应用大量时钟时出现性能问题，应在动画属性完成后从动画属性中删除撰写时钟。 可通过多种方式删除时钟。

• 若要从属性中删除所有时钟，请使用动画对象的 ApplyAnimationClock(DependencyProperty, AnimationClock) 或 BeginAnimation(DependencyProperty, AnimationTimeline) 方法。 指定作为第一个参数进行动画处理的属性，null 为第二个参数。 这会从属性中删除所有动画时钟。

• 若要从时钟列表中删除特定 AnimationClock，请使用 AnimationClock 的 Controller 属性检索 ClockController，然后调用 ClockController的 Remove 方法。 这通常在时钟的 Completed 事件处理程序中完成。 请注意，只有根时钟可由 ClockController控制;子时钟的 Controller 属性返回 null。 另请注意，如果时钟的有效持续时间永久，则不会调用 Completed 事件。 在这种情况下，用户必须确定何时调用 Remove。

这主要是对生存期较长的对象进行动画的问题。 当对象被垃圾回收时，其时钟也会断开连接并回收垃圾。

有关时钟对象的详细信息，请参阅 动画和计时系统概述。

Begin(FrameworkElement, FrameworkTemplate)

将与此 Storyboard 关联的动画应用于指定模板中的目标并启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject, System::Windows::FrameworkTemplate ^ frameworkTemplate);

public void Begin (System.Windows.FrameworkElement containingObject, System.Windows.FrameworkTemplate frameworkTemplate);

member this.Begin : System.Windows.FrameworkElement * System.Windows.FrameworkTemplate -> unit

Public Sub Begin (containingObject As FrameworkElement, frameworkTemplate As FrameworkTemplate)

参数

containingObject

FrameworkElement

已应用指定 frameworkTemplate 的对象。 不带 TargetName 的动画将应用于 containingObject。

frameworkTemplate

FrameworkTemplate

要进行动画处理的模板。

注解

如果目标属性已进行动画处理，则会使用 SnapshotAndReplace 交接行为替换它们。

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

Begin(FrameworkElement, HandoffBehavior)

将与此 Storyboard 关联的动画应用于其目标，并使用指定的 HandoffBehavior启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject, System::Windows::Media::Animation::HandoffBehavior handoffBehavior);

public void Begin (System.Windows.FrameworkElement containingObject, System.Windows.Media.Animation.HandoffBehavior handoffBehavior);

member this.Begin : System.Windows.FrameworkElement * System.Windows.Media.Animation.HandoffBehavior -> unit

Public Sub Begin (containingObject As FrameworkElement, handoffBehavior As HandoffBehavior)

参数

containingObject

FrameworkElement

包含在与此情节提要动画目标相同的名称范围内的对象。 没有指定 TargetName 的动画将应用于 containingObject。

handoffBehavior

HandoffBehavior

新动画应用于与任何当前动画交互的行为。

示例

以下示例使用 SnapshotAndReplaceHandoffBehavior 在用户左键单击时进行动画处理，并在用户右键单击时 ComposeHandoffBehavior。

/*

   This sample animates the position of an ellipse when 
   the user clicks within the main border. If the user
   left-clicks, the SnapshotAndReplace HandoffBehavior
   is used when applying the animations. If the user
   right-clicks, the Compose HandoffBehavior is used
   instead.

*/

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

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{

    // Create the demonstration.
    public class FrameworkElementStoryboardHandoffBehaviorExample : Page {

        private Border containerBorder;
        private Ellipse interactiveEllipse;
        private Storyboard theStoryboard;
        private DoubleAnimation xAnimation;
        private DoubleAnimation yAnimation;
        
        public FrameworkElementStoryboardHandoffBehaviorExample()
        {
        
            WindowTitle = "Interactive Animation Example";
            
            // Create a name scope for the page.
            NameScope.SetNameScope(this, new NameScope());  
            
            DockPanel myPanel = new DockPanel();
            myPanel.Margin = new Thickness(20.0);            
    
            containerBorder = new Border();
            containerBorder.Background = Brushes.White;
            containerBorder.BorderBrush = Brushes.Black;
            containerBorder.BorderThickness = new Thickness(2.0); 
            containerBorder.VerticalAlignment = VerticalAlignment.Stretch;
            
            interactiveEllipse = new Ellipse();
            interactiveEllipse.Fill = Brushes.Lime;
            interactiveEllipse.Stroke = Brushes.Black;
            interactiveEllipse.StrokeThickness = 2.0;
            interactiveEllipse.Width = 25;
            interactiveEllipse.Height = 25;
            interactiveEllipse.HorizontalAlignment = HorizontalAlignment.Left;
            interactiveEllipse.VerticalAlignment = VerticalAlignment.Top;

            TranslateTransform interactiveTranslateTransform = new TranslateTransform();       
            this.RegisterName("InteractiveTranslateTransform", interactiveTranslateTransform);
            
            interactiveEllipse.RenderTransform = 
                interactiveTranslateTransform;
                
            xAnimation = new DoubleAnimation();
            xAnimation.Duration = TimeSpan.FromSeconds(4);
            yAnimation = xAnimation.Clone();
            Storyboard.SetTargetName(xAnimation, "InteractiveTranslateTransform");
            Storyboard.SetTargetProperty(xAnimation, new PropertyPath(TranslateTransform.XProperty));
            Storyboard.SetTargetName(yAnimation, "InteractiveTranslateTransform");
            Storyboard.SetTargetProperty(yAnimation, new PropertyPath(TranslateTransform.YProperty));            
            
            theStoryboard = new Storyboard();
            theStoryboard.Children.Add(xAnimation);
            theStoryboard.Children.Add(yAnimation);

            containerBorder.MouseLeftButtonDown += 
                new MouseButtonEventHandler(border_mouseLeftButtonDown);
            containerBorder.MouseRightButtonDown += 
                new MouseButtonEventHandler(border_mouseRightButtonDown);                
            
            containerBorder.Child = interactiveEllipse;
            myPanel.Children.Add(containerBorder);
            this.Content = myPanel;
        }

        // When the user left-clicks, use the 
        // SnapshotAndReplace HandoffBehavior when applying the animation.        
        private void border_mouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            Point clickPoint = Mouse.GetPosition(containerBorder);
            
            // Set the target point so the center of the ellipse
            // ends up at the clicked point.
            Point targetPoint = new Point();
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2;
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2;  
            
            // Animate to the target point.
            xAnimation.To = targetPoint.X;
            yAnimation.To = targetPoint.Y;
            theStoryboard.Begin(this, HandoffBehavior.SnapshotAndReplace);

            // Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Lime;
        }
        
        // When the user right-clicks, use the 
        // Compose HandoffBehavior when applying the animation.
        private void border_mouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            // Find the point where the use clicked.
            Point clickPoint = Mouse.GetPosition(containerBorder);
            
            // Set the target point so the center of the ellipse
            // ends up at the clicked point.
            Point targetPoint = new Point();
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2;
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2;
 
            // Animate to the target point.
            xAnimation.To = targetPoint.X;
            yAnimation.To = targetPoint.Y;
            theStoryboard.Begin(this, HandoffBehavior.Compose);
                
            // Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Orange;
        }
    }
}

'
'
'   This sample animates the position of an ellipse when 
'   the user clicks within the main border. If the user
'   left-clicks, the SnapshotAndReplace HandoffBehavior
'   is used when applying the animations. If the user
'   right-clicks, the Compose HandoffBehavior is used
'   instead.
'
'


Imports System.Windows
Imports System.Windows.Navigation
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.Windows.Shapes
Imports System.Windows.Controls
Imports System.Windows.Input

Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards

    ' Create the demonstration.
    Public Class FrameworkElementStoryboardHandoffBehaviorExample
        Inherits Page


        Private containerBorder As Border
        Private interactiveEllipse As Ellipse
        Private theStoryboard As Storyboard
        Private xAnimation As DoubleAnimation
        Private yAnimation As DoubleAnimation

        Public Sub New()

            WindowTitle = "Interactive Animation Example"

            ' Create a name scope for the page.
            NameScope.SetNameScope(Me, New NameScope())

            Dim myPanel As New DockPanel()
            myPanel.Margin = New Thickness(20.0)

            containerBorder = New Border()
            containerBorder.Background = Brushes.White
            containerBorder.BorderBrush = Brushes.Black
            containerBorder.BorderThickness = New Thickness(2.0)
            containerBorder.VerticalAlignment = VerticalAlignment.Stretch

            interactiveEllipse = New Ellipse()
            With interactiveEllipse
                .Fill = Brushes.Lime
                .Stroke = Brushes.Black
                .StrokeThickness = 2.0
                .Width = 25
                .Height = 25
                .HorizontalAlignment = HorizontalAlignment.Left
                .VerticalAlignment = VerticalAlignment.Top
            End With

            Dim interactiveTranslateTransform As New TranslateTransform()
            Me.RegisterName("InteractiveTranslateTransform", interactiveTranslateTransform)

            interactiveEllipse.RenderTransform = interactiveTranslateTransform

            xAnimation = New DoubleAnimation()
            xAnimation.Duration = TimeSpan.FromSeconds(4)
            yAnimation = xAnimation.Clone()
            Storyboard.SetTargetName(xAnimation, "InteractiveTranslateTransform")
            Storyboard.SetTargetProperty(xAnimation, New PropertyPath(TranslateTransform.XProperty))
            Storyboard.SetTargetName(yAnimation, "InteractiveTranslateTransform")
            Storyboard.SetTargetProperty(yAnimation, New PropertyPath(TranslateTransform.YProperty))

            theStoryboard = New Storyboard()
            theStoryboard.Children.Add(xAnimation)
            theStoryboard.Children.Add(yAnimation)


            AddHandler containerBorder.MouseLeftButtonDown, AddressOf border_mouseLeftButtonDown
            AddHandler containerBorder.MouseRightButtonDown, AddressOf border_mouseRightButtonDown

            containerBorder.Child = interactiveEllipse
            myPanel.Children.Add(containerBorder)
            Me.Content = myPanel
        End Sub


        ' When the user left-clicks, use the 
        ' SnapshotAndReplace HandoffBehavior when applying the animation.        
        Private Sub border_mouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)

            Dim clickPoint As Point = Mouse.GetPosition(containerBorder)

            ' Set the target point so the center of the ellipse
            ' ends up at the clicked point.
            Dim targetPoint As New Point()
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2

            ' Animate to the target point.
            xAnimation.To = targetPoint.X
            yAnimation.To = targetPoint.Y
            theStoryboard.Begin(Me, HandoffBehavior.SnapshotAndReplace)


            ' Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Lime

        End Sub

        ' When the user right-clicks, use the 
        ' Compose HandoffBehavior when applying the animation.
        Private Sub border_mouseRightButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)

            ' Find the point where the use clicked.
            Dim clickPoint As Point = Mouse.GetPosition(containerBorder)

            ' Set the target point so the center of the ellipse
            ' ends up at the clicked point.
            Dim targetPoint As New Point()
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2

            ' Animate to the target point.
            xAnimation.To = targetPoint.X
            yAnimation.To = targetPoint.Y
            theStoryboard.Begin(Me, HandoffBehavior.Compose)

            ' Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Orange


        End Sub

    End Class

End Namespace

Begin(FrameworkContentElement, HandoffBehavior)

将与此 Storyboard 关联的动画应用于其目标，并使用指定的 HandoffBehavior启动它们。

public:
 void Begin(System::Windows::FrameworkContentElement ^ containingObject, System::Windows::Media::Animation::HandoffBehavior handoffBehavior);

public void Begin (System.Windows.FrameworkContentElement containingObject, System.Windows.Media.Animation.HandoffBehavior handoffBehavior);

member this.Begin : System.Windows.FrameworkContentElement * System.Windows.Media.Animation.HandoffBehavior -> unit

Public Sub Begin (containingObject As FrameworkContentElement, handoffBehavior As HandoffBehavior)

参数

containingObject

FrameworkContentElement

包含在与此情节提要动画目标相同的名称范围内的对象。 不带 TargetName 的动画将应用于 containingObject。

handoffBehavior

HandoffBehavior

新动画应用于与任何当前动画交互的行为。

示例

以下示例使用 SnapshotAndReplaceHandoffBehavior 在用户左键单击时进行动画处理，并在用户右键单击时 ComposeHandoffBehavior。

/*
    This example shows how to animate
    a FrameworkContentElement with a storyboard.

*/

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

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{
    public class FrameworkContentElementStoryboardWithHandoffBehaviorExample : 
        FlowDocument
    {
    
        private Storyboard myStoryboard;
        DoubleAnimation xAnimation;
        DoubleAnimation yAnimation;
        
        public FrameworkContentElementStoryboardWithHandoffBehaviorExample()
        {
        
            // Create a name scope for the document.
            NameScope.SetNameScope(this, new NameScope());        
            this.Background = Brushes.Orange;
            
            // Create a run of text.
            Run theText = new Run( 
                "Lorem ipsum dolor sit amet, consectetuer adipiscing elit.");   
                
            // Create a TextEffect
            TextEffect animatedSpecialEffect = new TextEffect();
            animatedSpecialEffect.Foreground = Brushes.OrangeRed;
            animatedSpecialEffect.PositionStart = 0;
            animatedSpecialEffect.PositionCount = 20;
            
            TranslateTransform animatedTransform = 
                new TranslateTransform();
                
            // Assign the transform a name by 
            // registering it with the page, so that
            // it can be targeted by storyboard
            // animations.      
            this.RegisterName("animatedTransform", animatedTransform);             
            animatedSpecialEffect.Transform = animatedTransform;

            // Apply the text effect to the run.
            theText.TextEffects = new TextEffectCollection();
            theText.TextEffects.Add(animatedSpecialEffect);

            // Create a paragraph to contain the run.
            Paragraph animatedParagraph = new Paragraph(theText);
            animatedParagraph.Background = Brushes.LightGray;           
   
            this.Blocks.Add(animatedParagraph);                           
            
            //
            // Create a storyboard to animate the
            // text effect's transform.
            //
            myStoryboard = new Storyboard();
            
            xAnimation = new DoubleAnimation();  
            xAnimation.Duration = TimeSpan.FromSeconds(5);                        
            Storyboard.SetTargetName(xAnimation, "animatedTransform");
            Storyboard.SetTargetProperty(xAnimation, 
                new PropertyPath(TranslateTransform.XProperty));      
            myStoryboard.Children.Add(xAnimation);
            
            yAnimation = new DoubleAnimation();
            yAnimation.Duration = TimeSpan.FromSeconds(5);           
            Storyboard.SetTargetName(yAnimation, "animatedTransform");
            Storyboard.SetTargetProperty(yAnimation, 
                new PropertyPath(TranslateTransform.YProperty));      
            myStoryboard.Children.Add(yAnimation);            
            
            this.MouseLeftButtonDown += 
                new MouseButtonEventHandler(document_mouseLeftButtonDown);
            this.MouseRightButtonDown += 
                new MouseButtonEventHandler(document_mouseRightButtonDown);
        }

        // When the user left-clicks, use the 
        // SnapshotAndReplace HandoffBehavior when applying the animation.        
        private void document_mouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            Point clickPoint = Mouse.GetPosition(this);

            // Animate to the target point.
            xAnimation.To = clickPoint.X; 
            yAnimation.To = clickPoint.Y;

            try
            {
                myStoryboard.Begin(this, HandoffBehavior.SnapshotAndReplace);  
            }catch(Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
        
        // When the user right-clicks, use the 
        // Compose HandoffBehavior when applying the animation.
        private void document_mouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {

            Point clickPoint = Mouse.GetPosition(this);

            // Animate to the target point.
            xAnimation.To = clickPoint.X;
            yAnimation.To = clickPoint.Y;
            myStoryboard.Begin(this, HandoffBehavior.Compose);  
        }        
    }
}

'
'    This example shows how to animate
'    a FrameworkContentElement with a storyboard.
'
'


Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes
Imports System.Windows.Media.Animation
Imports System.Windows.Documents
Imports System.Windows.Input


Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
    Public Class FrameworkContentElementStoryboardWithHandoffBehaviorExample
        Inherits FlowDocument

        Private myStoryboard As Storyboard
        Private xAnimation As DoubleAnimation
        Private yAnimation As DoubleAnimation

        Public Sub New()

            ' Create a name scope for the document.
            NameScope.SetNameScope(Me, New NameScope())
            Me.Background = Brushes.Orange

            ' Create a run of text.
            Dim theText As New Run("Lorem ipsum dolor sit amet, consectetuer adipiscing elit.")

            ' Create a TextEffect
            Dim animatedSpecialEffect As New TextEffect()
            animatedSpecialEffect.Foreground = Brushes.OrangeRed
            animatedSpecialEffect.PositionStart = 0
            animatedSpecialEffect.PositionCount = 20

            Dim animatedTransform As New TranslateTransform()

            ' Assign the transform a name by 
            ' registering it with the page, so that
            ' it can be targeted by storyboard
            ' animations.      
            Me.RegisterName("animatedTransform", animatedTransform)
            animatedSpecialEffect.Transform = animatedTransform


            ' Apply the text effect to the run.
            theText.TextEffects = New TextEffectCollection()
            theText.TextEffects.Add(animatedSpecialEffect)


            ' Create a paragraph to contain the run.
            Dim animatedParagraph As New Paragraph(theText)
            animatedParagraph.Background = Brushes.LightGray

            Me.Blocks.Add(animatedParagraph)

            '
            ' Create a storyboard to animate the
            ' text effect's transform.
            '
            myStoryboard = New Storyboard()

            xAnimation = New DoubleAnimation()
            xAnimation.Duration = TimeSpan.FromSeconds(5)
            Storyboard.SetTargetName(xAnimation, "animatedTransform")
            Storyboard.SetTargetProperty(xAnimation, New PropertyPath(TranslateTransform.XProperty))
            myStoryboard.Children.Add(xAnimation)

            yAnimation = New DoubleAnimation()
            yAnimation.Duration = TimeSpan.FromSeconds(5)
            Storyboard.SetTargetName(yAnimation, "animatedTransform")
            Storyboard.SetTargetProperty(yAnimation, New PropertyPath(TranslateTransform.YProperty))
            myStoryboard.Children.Add(yAnimation)

            AddHandler MouseLeftButtonDown, AddressOf document_mouseLeftButtonDown
            AddHandler MouseRightButtonDown, AddressOf document_mouseRightButtonDown

        End Sub



        ' When the user left-clicks, use the 
        ' SnapshotAndReplace HandoffBehavior when applying the animation.        
        Private Sub document_mouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)

            Dim clickPoint As Point = Mouse.GetPosition(Me)


            ' Animate to the target point.
            xAnimation.To = clickPoint.X
            yAnimation.To = clickPoint.Y

            Try
                myStoryboard.Begin(Me, HandoffBehavior.SnapshotAndReplace)

            Catch ex As Exception
                MessageBox.Show(ex.ToString())
            End Try
        End Sub

        ' When the user right-clicks, use the 
        ' Compose HandoffBehavior when applying the animation.
        Private Sub document_mouseRightButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)


            Dim clickPoint As Point = Mouse.GetPosition(Me)

            ' Animate to the target point.
            xAnimation.To = clickPoint.X
            yAnimation.To = clickPoint.Y
            myStoryboard.Begin(Me, HandoffBehavior.Compose)


        End Sub





    End Class
End Namespace

注解

使用 ComposeHandoffBehavior将 Storyboard、AnimationTimeline或 AnimationClock 应用于属性时，以前与该属性关联的任何 Clock 对象将继续使用系统资源;计时系统不会自动删除这些时钟。

若要避免使用 Compose应用大量时钟时出现性能问题，应在动画属性完成后从动画属性中删除撰写时钟。 可通过多种方式删除时钟。

• 若要从属性中删除所有时钟，请使用动画对象的 ApplyAnimationClock(DependencyProperty, AnimationClock) 或 BeginAnimation(DependencyProperty, AnimationTimeline) 方法。 指定作为第一个参数进行动画处理的属性，null 为第二个参数。 这会从属性中删除所有动画时钟。

• 若要从时钟列表中删除特定 AnimationClock，请使用 AnimationClock 的 Controller 属性检索 ClockController，然后调用 ClockController的 Remove 方法。 这通常在时钟的 Completed 事件处理程序中完成。 请注意，只有根时钟可由 ClockController控制;子时钟的 Controller 属性返回 null。 另请注意，如果时钟的有效持续时间永久，则不会调用 Completed 事件。 在这种情况下，用户必须确定何时调用 Remove。

这主要是对生存期较长的对象进行动画的问题。 当对象被垃圾回收时，其时钟也会断开连接并回收垃圾。

有关时钟对象的详细信息，请参阅 动画和计时系统概述。

Begin(FrameworkContentElement, Boolean)

将与此 Storyboard 关联的动画应用于其目标并启动它们。

public:
 void Begin(System::Windows::FrameworkContentElement ^ containingObject, bool isControllable);

public void Begin (System.Windows.FrameworkContentElement containingObject, bool isControllable);

member this.Begin : System.Windows.FrameworkContentElement * bool -> unit

Public Sub Begin (containingObject As FrameworkContentElement, isControllable As Boolean)

参数

containingObject

FrameworkContentElement

包含在与此情节提要动画目标相同的名称范围内的对象。 不带 TargetName 的动画将应用于 containingObject。

isControllable

Boolean

true 情节提要是否应以交互方式控制;否则，false。

示例

以下示例使用可控制的情节提要对 TextEffect进行动画处理。 TextEffect 包含在 FrameworkContentElement的名称范围内。

/*
    This example shows how to control
    a storyboard after it has started.

*/

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

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{
    public class FrameworkContentElementControlStoryboardExample : FlowDocument
    {
    
        private Storyboard myStoryboard;
        
        public FrameworkContentElementControlStoryboardExample()
        {
        
            // Create a name scope for the document.
            NameScope.SetNameScope(this, new NameScope());        
            this.Background = Brushes.White;
            
            // Create a run of text.
            Run theText = new Run( 
                "Lorem ipsum dolor sit amet, consectetuer adipiscing elit." + 
                "Ut non lacus. Nullam a ligula id leo adipiscing ornare." +
                " Duis mattis. ");   
                
            // Create a TextEffect
            TextEffect animatedSpecialEffect = new TextEffect();
            animatedSpecialEffect.Foreground = Brushes.OrangeRed;
            animatedSpecialEffect.PositionStart = 0;
            animatedSpecialEffect.PositionCount = 0;
            
            // Assign the TextEffect a name by 
            // registering it with the page, so that
            // it can be targeted by storyboard
            // animations            
            this.RegisterName("animatedSpecialEffect", animatedSpecialEffect);  
            
            // Apply the text effect to the run.
            theText.TextEffects = new TextEffectCollection();
            theText.TextEffects.Add(animatedSpecialEffect);
            
            // Create a paragraph to contain the run.
            Paragraph animatedParagraph = new Paragraph(theText);
            animatedParagraph.Background = Brushes.LightGray;
            animatedParagraph.Padding = new Thickness(20);
   
            this.Blocks.Add(animatedParagraph);            
            BlockUIContainer controlsContainer = new BlockUIContainer();                
            
            //
            // Create an animation and a storyboard to animate the
            // text effect.
            //
            Int32Animation countAnimation = 
                new Int32Animation(0, 127, TimeSpan.FromSeconds(10)); 
            Storyboard.SetTargetName(countAnimation, "animatedSpecialEffect");
            Storyboard.SetTargetProperty(countAnimation, 
                new PropertyPath(TextEffect.PositionCountProperty));
            myStoryboard = new Storyboard();
            myStoryboard.Children.Add(countAnimation);
            
            //
            // Create some buttons to control the storyboard
            // and a panel to contain them.
            //
            StackPanel buttonPanel = new StackPanel();
            buttonPanel.Orientation = Orientation.Vertical;
            Button beginButton = new Button();
            beginButton.Content = "Begin";
            beginButton.Click += new RoutedEventHandler(beginButton_Clicked);            
            buttonPanel.Children.Add(beginButton);
            Button pauseButton = new Button();
            pauseButton.Content = "Pause";
            pauseButton.Click +=new RoutedEventHandler(pauseButton_Clicked);
            buttonPanel.Children.Add(pauseButton);
            Button resumeButton = new Button();
            resumeButton.Content = "Resume";
            resumeButton.Click +=new RoutedEventHandler(resumeButton_Clicked);
            buttonPanel.Children.Add(resumeButton);
            Button skipToFillButton = new Button();
            skipToFillButton.Content = "Skip to Fill";
            skipToFillButton.Click +=new RoutedEventHandler(skipToFillButton_Clicked);
            buttonPanel.Children.Add(skipToFillButton);
            Button setSpeedRatioButton = new Button();
            setSpeedRatioButton.Content = "Triple Speed";
            setSpeedRatioButton.Click +=new RoutedEventHandler(setSpeedRatioButton_Clicked);
            buttonPanel.Children.Add(setSpeedRatioButton);
            Button stopButton = new Button();
            stopButton.Content = "Stop";
            stopButton.Click +=new RoutedEventHandler(stopButton_Clicked);
            buttonPanel.Children.Add(stopButton);
            Button removeButton = new Button();
            removeButton.Content = "Remove";
            removeButton.Click +=new RoutedEventHandler(removeButton_Clicked);
            buttonPanel.Children.Add(removeButton); 
   
            controlsContainer.Child = buttonPanel; 
            this.Blocks.Add(controlsContainer);
        }
        
        // Begins the storyboard.
        private void beginButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Specifying "true" as the second Begin parameter
            // makes this storyboard controllable.
            myStoryboard.Begin(this, true);          
        }
        
        // Pauses the storyboard.
        private void pauseButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Pause(this);          
        }
        
        // Resumes the storyboard.
        private void resumeButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Resume(this);          
        }     
        
        // Advances the storyboard to its fill period.
        private void skipToFillButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.SkipToFill(this);          
        } 
        
        // Updates the storyboard's speed.
        private void setSpeedRatioButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Makes the storyboard progress three times as fast as normal.
            myStoryboard.SetSpeedRatio(this, 3);          
        }           
        
        // Stops the storyboard.
        private void stopButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Stop(this);          
        }     
        
        // Removes the storyboard.
        private void removeButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Remove(this);          
        }           
    }
}

'
'    This example shows how to control
'    a storyboard after it has started.
'
'


Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes
Imports System.Windows.Media.Animation
Imports System.Windows.Documents


Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
    Public Class FrameworkContentElementControlStoryboardExample
        Inherits FlowDocument

        Private myStoryboard As Storyboard

        Public Sub New()

            ' Create a name scope for the document.
            NameScope.SetNameScope(Me, New NameScope())
            Me.Background = Brushes.White

            ' Create a run of text.
            Dim theText As New Run("Lorem ipsum dolor sit amet, consectetuer adipiscing elit." & "Ut non lacus. Nullam a ligula id leo adipiscing ornare." & " Duis mattis. ")

            ' Create a TextEffect
            Dim animatedSpecialEffect As New TextEffect()
            animatedSpecialEffect.Foreground = Brushes.OrangeRed
            animatedSpecialEffect.PositionStart = 0
            animatedSpecialEffect.PositionCount = 0

            ' Assign the TextEffect a name by 
            ' registering it with the page, so that
            ' it can be targeted by storyboard
            ' animations            
            Me.RegisterName("animatedSpecialEffect", animatedSpecialEffect)

            ' Apply the text effect to the run.
            theText.TextEffects = New TextEffectCollection()
            theText.TextEffects.Add(animatedSpecialEffect)

            ' Create a paragraph to contain the run.
            Dim animatedParagraph As New Paragraph(theText)
            animatedParagraph.Background = Brushes.LightGray
            animatedParagraph.Padding = New Thickness(20)

            Me.Blocks.Add(animatedParagraph)
            Dim controlsContainer As New BlockUIContainer()

            '
            ' Create an animation and a storyboard to animate the
            ' text effect.
            '
            Dim countAnimation As New Int32Animation(0, 127, TimeSpan.FromSeconds(10))
            Storyboard.SetTargetName(countAnimation, "animatedSpecialEffect")
            Storyboard.SetTargetProperty(countAnimation, New PropertyPath(TextEffect.PositionCountProperty))
            myStoryboard = New Storyboard()
            myStoryboard.Children.Add(countAnimation)

            '
            ' Create some buttons to control the storyboard
            ' and a panel to contain them.
            '
            Dim buttonPanel As New StackPanel()
            buttonPanel.Orientation = Orientation.Vertical
            Dim beginButton As New Button()
            beginButton.Content = "Begin"
            AddHandler beginButton.Click, AddressOf beginButton_Clicked
            buttonPanel.Children.Add(beginButton)
            Dim pauseButton As New Button()
            pauseButton.Content = "Pause"
            AddHandler pauseButton.Click, AddressOf pauseButton_Clicked
            buttonPanel.Children.Add(pauseButton)
            Dim resumeButton As New Button()
            resumeButton.Content = "Resume"
            AddHandler resumeButton.Click, AddressOf resumeButton_Clicked
            buttonPanel.Children.Add(resumeButton)
            Dim skipToFillButton As New Button()
            skipToFillButton.Content = "Skip to Fill"
            AddHandler skipToFillButton.Click, AddressOf skipToFillButton_Clicked
            buttonPanel.Children.Add(skipToFillButton)
            Dim setSpeedRatioButton As New Button()
            setSpeedRatioButton.Content = "Triple Speed"
            AddHandler setSpeedRatioButton.Click, AddressOf setSpeedRatioButton_Clicked
            buttonPanel.Children.Add(setSpeedRatioButton)
            Dim stopButton As New Button()
            stopButton.Content = "Stop"
            AddHandler stopButton.Click, AddressOf stopButton_Clicked
            buttonPanel.Children.Add(stopButton)
            Dim removeButton As New Button()
            removeButton.Content = "Remove"
            AddHandler removeButton.Click, AddressOf removeButton_Clicked
            buttonPanel.Children.Add(removeButton)

            controlsContainer.Child = buttonPanel
            Me.Blocks.Add(controlsContainer)

        End Sub

        ' Begins the storyboard.
        Private Sub beginButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            ' Specifying "true" as the second Begin parameter
            ' makes this storyboard controllable.
            myStoryboard.Begin(Me, True)

        End Sub

        ' Pauses the storyboard.
        Private Sub pauseButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Pause(Me)

        End Sub

        ' Resumes the storyboard.
        Private Sub resumeButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Resume(Me)

        End Sub

        ' Advances the storyboard to its fill period.
        Private Sub skipToFillButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.SkipToFill(Me)

        End Sub

        ' Updates the storyboard's speed.
        Private Sub setSpeedRatioButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
            ' Makes the storyboard progress three times as fast as normal.
            myStoryboard.SetSpeedRatio(Me, 3)

        End Sub

        ' Stops the storyboard.
        Private Sub stopButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Stop(Me)

        End Sub

        ' Removes the storyboard.
        Private Sub removeButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)
             myStoryboard.Remove(Me)

        End Sub

    End Class
End Namespace

注解

如果目标属性已进行动画处理，则会使用 SnapshotAndReplace 交接行为替换它们。

若要以交互方式控制此情节提要，必须在调用用于开始情节提要的交互式方法时指定相同的 containingObject

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

Begin(FrameworkElement)

将与此 Storyboard 关联的动画应用于其目标并启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject);

public void Begin (System.Windows.FrameworkElement containingObject);

member this.Begin : System.Windows.FrameworkElement -> unit

Public Sub Begin (containingObject As FrameworkElement)

参数

containingObject

FrameworkElement

包含在与此情节提要动画目标相同的名称范围内的对象。 不带 TargetName 的动画将应用于 containingObject。

注解

如果目标属性已进行动画处理，则会使用 SnapshotAndReplace 交接行为替换它们。

从此方法开始的情节提要无法在启动后暂停、恢复或以交互方式控制。 若要使情节提要可控，请使用 Begin(FrameworkElement, Boolean) 或 Begin(FrameworkElement, HandoffBehavior, Boolean) 方法。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

Begin(FrameworkContentElement)

将与此 Storyboard 关联的动画应用于其目标并启动它们。

public:
 void Begin(System::Windows::FrameworkContentElement ^ containingObject);

public void Begin (System.Windows.FrameworkContentElement containingObject);

member this.Begin : System.Windows.FrameworkContentElement -> unit

Public Sub Begin (containingObject As FrameworkContentElement)

参数

containingObject

FrameworkContentElement

包含在与此情节提要动画目标相同的名称范围内的对象。 不带 TargetName 的动画将应用于 containingObject。

示例

以下示例使用情节提要对 TextEffect进行动画处理。 TextEffect 包含在 FrameworkContentElement的名称范围内。

/*
    This example shows how to animate
    a FrameworkContentElement with a storyboard.

*/

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

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{
    public class FrameworkContentElementStoryboardExample : FlowDocument
    {
    
        private Storyboard myStoryboard;
        
        public FrameworkContentElementStoryboardExample()
        {
        
            // Create a name scope for the document.
            NameScope.SetNameScope(this, new NameScope());        
            this.Background = Brushes.White;
            
            // Create a run of text.
            Run theText = new Run( 
                "Lorem ipsum dolor sit amet, consectetuer adipiscing elit." + 
                "Ut non lacus. Nullam a ligula id leo adipiscing ornare." +
                " Duis mattis. ");   
                
            // Create a TextEffect
            TextEffect animatedSpecialEffect = new TextEffect();
            animatedSpecialEffect.Foreground = Brushes.OrangeRed;
            animatedSpecialEffect.PositionStart = 0;
            animatedSpecialEffect.PositionCount = 0;
            
            // Assign the TextEffect a name by 
            // registering it with the page, so that
            // it can be targeted by storyboard
            // animations            
            this.RegisterName("animatedSpecialEffect", animatedSpecialEffect);  
            
            // Apply the text effect to the run.
            theText.TextEffects = new TextEffectCollection();
            theText.TextEffects.Add(animatedSpecialEffect);
            
            // Create a paragraph to contain the run.
            Paragraph animatedParagraph = new Paragraph(theText);
            animatedParagraph.Background = Brushes.LightGray;
            animatedParagraph.Padding = new Thickness(20);
   
            this.Blocks.Add(animatedParagraph);            
            BlockUIContainer controlsContainer = new BlockUIContainer();                
            
            //
            // Create an animation and a storyboard to animate the
            // text effect.
            //
            Int32Animation countAnimation = 
                new Int32Animation(0, 127, TimeSpan.FromSeconds(10));            
            Storyboard.SetTargetName(countAnimation, "animatedSpecialEffect");
            Storyboard.SetTargetProperty(countAnimation, 
                new PropertyPath(TextEffect.PositionCountProperty));
            myStoryboard = new Storyboard();
            myStoryboard.Children.Add(countAnimation);
            
            //
            // Create a button to start the storyboard.
            //
            Button beginButton = new Button();
            beginButton.Content = "Begin";
            beginButton.Click += new RoutedEventHandler(beginButton_Clicked);            
 
            controlsContainer.Child = beginButton; 
            this.Blocks.Add(controlsContainer);
        }
        
        // Begins the storyboard.
        private void beginButton_Clicked(object sender, RoutedEventArgs args)
        {
        
            myStoryboard.Begin(this);                  
        }
    }
}

'
'    This example shows how to animate
'    a FrameworkContentElement with a storyboard.
'
'


Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes
Imports System.Windows.Media.Animation
Imports System.Windows.Documents


Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
    Public Class FrameworkContentElementStoryboardExample
        Inherits FlowDocument

        Private myStoryboard As Storyboard

        Public Sub New()

            ' Create a name scope for the document.
            NameScope.SetNameScope(Me, New NameScope())
            Me.Background = Brushes.White

            ' Create a run of text.
            Dim theText As New Run("Lorem ipsum dolor sit amet, consectetuer adipiscing elit." & "Ut non lacus. Nullam a ligula id leo adipiscing ornare." & " Duis mattis. ")

            ' Create a TextEffect
            Dim animatedSpecialEffect As New TextEffect()
            animatedSpecialEffect.Foreground = Brushes.OrangeRed
            animatedSpecialEffect.PositionStart = 0
            animatedSpecialEffect.PositionCount = 0

            ' Assign the TextEffect a name by 
            ' registering it with the page, so that
            ' it can be targeted by storyboard
            ' animations            
            Me.RegisterName("animatedSpecialEffect", animatedSpecialEffect)

            ' Apply the text effect to the run.
            theText.TextEffects = New TextEffectCollection()
            theText.TextEffects.Add(animatedSpecialEffect)

            ' Create a paragraph to contain the run.
            Dim animatedParagraph As New Paragraph(theText)
            animatedParagraph.Background = Brushes.LightGray
            animatedParagraph.Padding = New Thickness(20)

            Me.Blocks.Add(animatedParagraph)
            Dim controlsContainer As New BlockUIContainer()

            '
            ' Create an animation and a storyboard to animate the
            ' text effect.
            '
            Dim countAnimation As New Int32Animation(0, 127, TimeSpan.FromSeconds(10))
            Storyboard.SetTargetName(countAnimation, "animatedSpecialEffect")
            Storyboard.SetTargetProperty(countAnimation, New PropertyPath(TextEffect.PositionCountProperty))
            myStoryboard = New Storyboard()
            myStoryboard.Children.Add(countAnimation)

            '
            ' Create a button to start the storyboard.
            '
            Dim beginButton As New Button()
            beginButton.Content = "Begin"
            AddHandler beginButton.Click, AddressOf beginButton_Clicked

            controlsContainer.Child = beginButton
            Me.Blocks.Add(controlsContainer)

        End Sub

        ' Begins the storyboard.
        Private Sub beginButton_Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)

            myStoryboard.Begin(Me)
        End Sub



    End Class
End Namespace

注解

如果目标属性已进行动画处理，则会使用 SnapshotAndReplace 交接行为替换它们。

从此方法开始的情节提要无法在启动后暂停、恢复或以交互方式控制。 若要使情节提要可控，请使用 Begin 或 Begin 方法。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。

Begin()

将与此 Storyboard 关联的动画应用于其目标并启动它们。

public:
 void Begin();

public void Begin ();

member this.Begin : unit -> unit

Public Sub Begin ()

Begin(FrameworkElement, Boolean)

将与此 Storyboard 关联的动画应用于其目标并启动它们。

public:
 void Begin(System::Windows::FrameworkElement ^ containingObject, bool isControllable);

public void Begin (System.Windows.FrameworkElement containingObject, bool isControllable);

member this.Begin : System.Windows.FrameworkElement * bool -> unit

Public Sub Begin (containingObject As FrameworkElement, isControllable As Boolean)

参数

containingObject

FrameworkElement

包含在与此情节提要动画目标相同的名称范围内的对象。 不带 TargetName 的动画将应用于 containingObject。

isControllable

Boolean

true 情节提要是否应以交互方式控制;否则，false。

注解

如果目标属性已进行动画处理，则会使用 SnapshotAndReplace 交接行为替换它们。

若要以交互方式控制此情节提要，必须在调用用于开始情节提要的交互式方法时使用相同的 containingObject 参数

调用此方法时，将为情节提要创建 Clock 对象及其包含的任何时间线。 这些时钟与 containingObject一起存储。

开始情节提要会触发 CurrentStateInvalidated 和 CurrentGlobalSpeedInvalidated 事件。