Storyboard.Begin Methode

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)

Parameter

Hinweise

Um dieses Storyboard interaktiv zu steuern, müssen Sie beim Aufrufen der interaktiven Methoden, die Sie zum Starten des Storyboards verwendet haben, denselben containingObject angeben.

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

Verwenden des VerfassenhandoffBehavior

Wenn Sie eine Storyboard, AnimationTimelineoder AnimationClock auf eine Eigenschaft mit dem ComposeHandoffBehavioranwenden, verbrauchen alle zuvor dieser Eigenschaft zugeordneten Clock Objekte weiterhin Systemressourcen; Das Timing-System entfernt diese Uhren nicht automatisch.

Um Leistungsprobleme zu vermeiden, wenn Sie eine große Anzahl von Uhren mit Composeanwenden, sollten Sie das Verfassen von Uhren nach Abschluss der animierten Eigenschaft entfernen. Es gibt mehrere Möglichkeiten, eine Uhr zu entfernen.

• Um alle Uhren aus einer Eigenschaft zu entfernen, verwenden Sie die ApplyAnimationClock(DependencyProperty, AnimationClock)- oder BeginAnimation(DependencyProperty, AnimationTimeline) Methode des animierten Objekts. Geben Sie die Eigenschaft an, die als erster Parameter animiert wird, und null als zweite. Dadurch werden alle Animationsuhren aus der Eigenschaft entfernt.

• Um eine bestimmte AnimationClock aus einer Liste von Uhren zu entfernen, verwenden Sie die Controller-Eigenschaft des AnimationClock, um eine ClockControllerabzurufen, und rufen Sie dann die Remove Methode der ClockControllerauf. Dies erfolgt in der Regel im Completed Ereignishandler für eine Uhr. Beachten Sie, dass nur Stammuhren durch eine ClockControllergesteuert werden können; die Controller Eigenschaft einer untergeordneten Uhr gibt nullzurück. Beachten Sie auch, dass das Completed-Ereignis nicht aufgerufen wird, wenn die effektive Dauer der Uhr für immer ist. In diesem Fall muss der Benutzer bestimmen, wann Removeaufgerufen werden soll.

Dies ist in erster Linie ein Problem bei Animationen für Objekte, die eine lange Lebensdauer aufweisen. Wenn ein Objekt garbage collection wird, werden die Uhren ebenfalls getrennt und garbage collection.

Weitere Informationen zu Uhrobjekten finden Sie unter Animation and Timing System Overview.

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)

Parameter

Beispiele

Das folgende Beispiel zeigt, wie Sie ein steuerbares Storyboard erstellen.

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

Im nächsten Beispiel wird die SnapshotAndReplaceHandoffBehavior verwendet, um zu animieren, wenn der Benutzer mit der linken Maustaste klickt, und die ComposeHandoffBehavior, wenn der Benutzer mit der rechten Maustaste klickt.

/*

   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

Hinweise

Um dieses Storyboard interaktiv zu steuern, müssen Sie beim Aufrufen der interaktiven Methoden, die Sie zum Starten des Storyboards verwendet haben, denselben containingObject Parameter verwenden.

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

Verwenden des VerfassenhandoffBehavior

Wenn Sie eine Storyboard, AnimationTimelineoder AnimationClock auf eine Eigenschaft mit dem ComposeHandoffBehavioranwenden, verbrauchen alle zuvor dieser Eigenschaft zugeordneten Clock Objekte weiterhin Systemressourcen; Das Timing-System entfernt diese Uhren nicht automatisch.

Um Leistungsprobleme zu vermeiden, wenn Sie eine große Anzahl von Uhren mit Composeanwenden, sollten Sie das Verfassen von Uhren nach Abschluss der animierten Eigenschaft entfernen. Es gibt mehrere Möglichkeiten, eine Uhr zu entfernen.

• Um alle Uhren aus einer Eigenschaft zu entfernen, verwenden Sie die ApplyAnimationClock(DependencyProperty, AnimationClock)- oder BeginAnimation(DependencyProperty, AnimationTimeline) Methode des animierten Objekts. Geben Sie die Eigenschaft an, die als erster Parameter animiert wird, und null als zweite. Dadurch werden alle Animationsuhren aus der Eigenschaft entfernt.

• Um eine bestimmte AnimationClock aus einer Liste von Uhren zu entfernen, verwenden Sie die Controller-Eigenschaft des AnimationClock, um eine ClockControllerabzurufen, und rufen Sie dann die Remove Methode der ClockControllerauf. Dies erfolgt in der Regel im Completed Ereignishandler für eine Uhr. Beachten Sie, dass nur Stammuhren durch eine ClockControllergesteuert werden können; die Controller Eigenschaft einer untergeordneten Uhr gibt nullzurück. Beachten Sie auch, dass das Completed-Ereignis nicht aufgerufen wird, wenn die effektive Dauer der Uhr für immer ist. In diesem Fall muss der Benutzer bestimmen, wann Removeaufgerufen werden soll.

Dies ist in erster Linie ein Problem bei Animationen für Objekte, die eine lange Lebensdauer aufweisen. Wenn ein Objekt garbage collection wird, werden die Uhren ebenfalls getrennt und garbage collection.

Weitere Informationen zu Uhrobjekten finden Sie unter Animation and Timing System Overview.

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)

Parameter

Hinweise

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

Verwenden des VerfassenhandoffBehavior

Wenn Sie eine Storyboard, AnimationTimelineoder AnimationClock auf eine Eigenschaft mit dem ComposeHandoffBehavioranwenden, verbrauchen alle zuvor dieser Eigenschaft zugeordneten Clock Objekte weiterhin Systemressourcen; Das Timing-System entfernt diese Uhren nicht automatisch.

Um Leistungsprobleme zu vermeiden, wenn Sie eine große Anzahl von Uhren mit Composeanwenden, sollten Sie das Verfassen von Uhren nach Abschluss der animierten Eigenschaft entfernen. Es gibt mehrere Möglichkeiten, eine Uhr zu entfernen.

• Um alle Uhren aus einer Eigenschaft zu entfernen, verwenden Sie die ApplyAnimationClock(DependencyProperty, AnimationClock)- oder BeginAnimation(DependencyProperty, AnimationTimeline) Methode des animierten Objekts. Geben Sie die Eigenschaft an, die als erster Parameter animiert wird, und null als zweite. Dadurch werden alle Animationsuhren aus der Eigenschaft entfernt.

• Um eine bestimmte AnimationClock aus einer Liste von Uhren zu entfernen, verwenden Sie die Controller-Eigenschaft des AnimationClock, um eine ClockControllerabzurufen, und rufen Sie dann die Remove Methode der ClockControllerauf. Dies erfolgt in der Regel im Completed Ereignishandler für eine Uhr. Beachten Sie, dass nur Stammuhren durch eine ClockControllergesteuert werden können; die Controller Eigenschaft einer untergeordneten Uhr gibt nullzurück. Beachten Sie auch, dass das Completed-Ereignis nicht aufgerufen wird, wenn die effektive Dauer der Uhr für immer ist. In diesem Fall muss der Benutzer bestimmen, wann Removeaufgerufen werden soll.

Dies ist in erster Linie ein Problem bei Animationen für Objekte, die eine lange Lebensdauer aufweisen. Wenn ein Objekt garbage collection wird, werden die Uhren ebenfalls getrennt und garbage collection.

Weitere Informationen zu Uhrobjekten finden Sie unter Animation and Timing System Overview.

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)

Parameter

Hinweise

Wenn die zielbezogenen Eigenschaften bereits animiert sind, werden sie durch das SnapshotAndReplace Übergabeverhalten ersetzt.

Um dieses Storyboard interaktiv zu steuern, müssen Sie beim Aufrufen der interaktiven Methoden, die Sie zum Starten des Storyboards verwendet haben, denselben containingObject angeben.

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

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)

Parameter

Beispiele

Im folgenden Beispiel wird ein steuerbares Storyboard verwendet, um eine TextEffectzu animieren. Die TextEffect ist innerhalb eines Namensbereichs FrameworkContentElemententhalten.

/*
    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

Im nächsten Beispiel wird die SnapshotAndReplaceHandoffBehavior verwendet, um zu animieren, wenn der Benutzer mit der linken Maustaste klickt, und die ComposeHandoffBehavior, wenn der Benutzer mit der rechten Maustaste klickt.

/*
    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

Hinweise

Wenn die zielbezogenen Eigenschaften bereits animiert sind, werden sie durch das angegebene Übergabeverhalten ersetzt.

Um dieses Storyboard interaktiv zu steuern, müssen Sie beim Aufrufen der interaktiven Methoden, die Sie zum Starten des Storyboards verwendet haben, denselben containingObject angeben.

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

Verwenden des VerfassenhandoffBehavior

Wenn Sie eine Storyboard, AnimationTimelineoder AnimationClock auf eine Eigenschaft mit dem ComposeHandoffBehavioranwenden, verbrauchen alle zuvor dieser Eigenschaft zugeordneten Clock Objekte weiterhin Systemressourcen; Das Timing-System entfernt diese Uhren nicht automatisch.

Um Leistungsprobleme zu vermeiden, wenn Sie eine große Anzahl von Uhren mit Composeanwenden, sollten Sie das Verfassen von Uhren nach Abschluss der animierten Eigenschaft entfernen. Es gibt mehrere Möglichkeiten, eine Uhr zu entfernen.

• Um alle Uhren aus einer Eigenschaft zu entfernen, verwenden Sie die ApplyAnimationClock(DependencyProperty, AnimationClock)- oder BeginAnimation(DependencyProperty, AnimationTimeline) Methode des animierten Objekts. Geben Sie die Eigenschaft an, die als erster Parameter animiert wird, und null als zweite. Dadurch werden alle Animationsuhren aus der Eigenschaft entfernt.

• Um eine bestimmte AnimationClock aus einer Liste von Uhren zu entfernen, verwenden Sie die Controller-Eigenschaft des AnimationClock, um eine ClockControllerabzurufen, und rufen Sie dann die Remove Methode der ClockControllerauf. Dies erfolgt in der Regel im Completed Ereignishandler für eine Uhr. Beachten Sie, dass nur Stammuhren durch eine ClockControllergesteuert werden können; die Controller Eigenschaft einer untergeordneten Uhr gibt nullzurück. Beachten Sie auch, dass das Completed-Ereignis nicht aufgerufen wird, wenn die effektive Dauer der Uhr für immer ist. In diesem Fall muss der Benutzer bestimmen, wann Removeaufgerufen werden soll.

Dies ist in erster Linie ein Problem bei Animationen für Objekte, die eine lange Lebensdauer aufweisen. Wenn ein Objekt garbage collection wird, werden die Uhren ebenfalls getrennt und garbage collection.

Weitere Informationen zu Uhrobjekten finden Sie unter Animation and Timing System Overview.

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)

Parameter

Hinweise

Wenn die zielbezogenen Eigenschaften bereits animiert sind, werden sie durch das SnapshotAndReplace Übergabeverhalten ersetzt.

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

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)

Parameter

Beispiele

Im folgenden Beispiel wird die SnapshotAndReplaceHandoffBehavior verwendet, um zu animieren, wenn der Benutzer mit der linken Maustaste klickt, und die ComposeHandoffBehavior, wenn der Benutzer mit der rechten Maustaste klickt.

/*

   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

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)

Parameter

Beispiele

Im folgenden Beispiel wird die SnapshotAndReplaceHandoffBehavior verwendet, um zu animieren, wenn der Benutzer mit der linken Maustaste klickt, und die ComposeHandoffBehavior, wenn der Benutzer mit der rechten Maustaste klickt.

/*
    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

Hinweise

Wenn Sie eine Storyboard, AnimationTimelineoder AnimationClock auf eine Eigenschaft mit dem ComposeHandoffBehavioranwenden, verbrauchen alle zuvor dieser Eigenschaft zugeordneten Clock Objekte weiterhin Systemressourcen; Das Timing-System entfernt diese Uhren nicht automatisch.

Um Leistungsprobleme zu vermeiden, wenn Sie eine große Anzahl von Uhren mit Composeanwenden, sollten Sie das Verfassen von Uhren nach Abschluss der animierten Eigenschaft entfernen. Es gibt mehrere Möglichkeiten, eine Uhr zu entfernen.

• Um alle Uhren aus einer Eigenschaft zu entfernen, verwenden Sie die ApplyAnimationClock(DependencyProperty, AnimationClock)- oder BeginAnimation(DependencyProperty, AnimationTimeline) Methode des animierten Objekts. Geben Sie die Eigenschaft an, die als erster Parameter animiert wird, und null als zweite. Dadurch werden alle Animationsuhren aus der Eigenschaft entfernt.

• Um eine bestimmte AnimationClock aus einer Liste von Uhren zu entfernen, verwenden Sie die Controller-Eigenschaft des AnimationClock, um eine ClockControllerabzurufen, und rufen Sie dann die Remove Methode der ClockControllerauf. Dies erfolgt in der Regel im Completed Ereignishandler für eine Uhr. Beachten Sie, dass nur Stammuhren durch eine ClockControllergesteuert werden können; die Controller Eigenschaft einer untergeordneten Uhr gibt nullzurück. Beachten Sie auch, dass das Completed-Ereignis nicht aufgerufen wird, wenn die effektive Dauer der Uhr für immer ist. In diesem Fall muss der Benutzer bestimmen, wann Removeaufgerufen werden soll.

Dies ist in erster Linie ein Problem bei Animationen für Objekte, die eine lange Lebensdauer aufweisen. Wenn ein Objekt garbage collection wird, werden die Uhren ebenfalls getrennt und garbage collection.

Weitere Informationen zu Uhrobjekten finden Sie unter Animation and Timing System Overview.

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)

Parameter

Beispiele

Im folgenden Beispiel wird ein steuerbares Storyboard verwendet, um eine TextEffectzu animieren. Die TextEffect ist innerhalb eines Namensbereichs FrameworkContentElemententhalten.

/*
    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

Hinweise

Wenn die zielbezogenen Eigenschaften bereits animiert sind, werden sie durch das SnapshotAndReplace Übergabeverhalten ersetzt.

Um dieses Storyboard interaktiv zu steuern, müssen Sie beim Aufrufen der interaktiven Methoden, die Sie zum Starten des Storyboards verwendet haben, denselben containingObject angeben.

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

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)

Parameter

Hinweise

Wenn die zielbezogenen Eigenschaften bereits animiert sind, werden sie durch das SnapshotAndReplace Übergabeverhalten ersetzt.

Storyboards, die mit dieser Methode gestartet wurden, können nach dem Starten nicht angehalten, fortgesetzt oder anderweitig interaktiv gesteuert werden. Verwenden Sie zum Steuern eines Storyboards die Begin(FrameworkElement, Boolean)- oder Begin(FrameworkElement, HandoffBehavior, Boolean)-Methode.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

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)

Parameter

Beispiele

Im folgenden Beispiel wird ein Storyboard zum Animieren eines TextEffectverwendet. Die TextEffect ist innerhalb eines Namensbereichs FrameworkContentElemententhalten.

/*
    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

Hinweise

Wenn die zielbezogenen Eigenschaften bereits animiert sind, werden sie durch das SnapshotAndReplace Übergabeverhalten ersetzt.

Storyboards, die mit dieser Methode gestartet wurden, können nach dem Starten nicht angehalten, fortgesetzt oder anderweitig interaktiv gesteuert werden. Verwenden Sie zum Steuern eines Storyboards die Begin- oder Begin-Methode.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.

public:
 void Begin();

public void Begin ();

member this.Begin : unit -> unit

Public Sub Begin ()

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)

Parameter

Hinweise

Wenn die zielbezogenen Eigenschaften bereits animiert sind, werden sie durch das SnapshotAndReplace Übergabeverhalten ersetzt.

Um dieses Storyboard interaktiv zu steuern, müssen Sie beim Aufrufen der interaktiven Methoden, die Sie zum Starten des Storyboards verwendet haben, denselben containingObject Parameter verwenden.

Wenn diese Methode aufgerufen wird, werden Clock Objekte für das Storyboard und alle darin enthaltenen Zeitachsen erstellt. Diese Uhren werden mit containingObjectgespeichert.

Wenn Sie ein Storyboard beginnen, werden die ereignisse CurrentStateInvalidated und CurrentGlobalSpeedInvalidated ausgelöst.