InkAnalyzer.ContextNodeLinkDeleting-Ereignis

Artikel
11/26/2008

Tritt auf, bevor der InkAnalyzer einen ContextLink zwischen zwei ContextNode-Objekten entfernt.

Namespace: System.Windows.Ink
Assembly: IAWinFX (in IAWinFX.dll)

Syntax

'Declaration
Public Event ContextNodeLinkDeleting As ContextNodeLinkDeletingEventHandler
'Usage
Dim instance As InkAnalyzer
Dim handler As ContextNodeLinkDeletingEventHandler

AddHandler instance.ContextNodeLinkDeleting, handler

public event ContextNodeLinkDeletingEventHandler ContextNodeLinkDeleting

public:
 event ContextNodeLinkDeletingEventHandler^ ContextNodeLinkDeleting {
    void add (ContextNodeLinkDeletingEventHandler^ value);
    void remove (ContextNodeLinkDeletingEventHandler^ value);
}

/** @event */
public void add_ContextNodeLinkDeleting (ContextNodeLinkDeletingEventHandler value)
/** @event */
public void remove_ContextNodeLinkDeleting (ContextNodeLinkDeletingEventHandler value)

JScript unterstützt keine Ereignisse.

Hinweise

Verwenden Sie dieses Ereignis, wenn Ihre Anwendung über eine eigene Datenstruktur verfügt, die mit der Datenstruktur des InkAnalyzer synchronisiert wird. Dieses Ereignis tritt während der Abgleichphase der Freihandanalyse oder als Antwort auf eine InkAnalyzer-Methode auf, die einen ContextLink zwischen zwei [T:System.Windows.Ink.ContextNode objects]-Objekten entfernt.

Weitere Informationen zum Synchronisieren von Anwendungsdaten mit InkAnalyzer finden Sie unter Data Proxy with Ink Analysis.

Beispiele

In diesem Beispiel wird eine Methode mit dem Namen AttachDataProxyEventHandlers definiert, die Datenproxyereignishandler an einen InkAnalyzer mit dem Namen theInkAnalyzer anfügt.

Private Sub AttachDataProxyEventHandlers() 
    ' If the document model supports on demand data proxy, then add an
    ' event handler for the PopulateContextNode event. This event is raised
    ' when the InkAnalyzer accesses a partially populated ContextNode created
    ' by the document model.
    If Me.theDocumentModel.SupportsOnDemandDataProxy Then
        AddHandler Me.theInkAnalyzer.PopulateContextNode, AddressOf Me.PopulateContextNode
    End If

    ' Add the other data proxy related event handlers. These events are raised
    ' by the InkAnalyzer to communicate ink analysis results to the document model.
    AddHandler Me.theInkAnalyzer.ContextNodeCreated, AddressOf Me.AddContextNode
    AddHandler Me.theInkAnalyzer.ContextNodeDeleting, AddressOf Me.RemoveContextNode
    AddHandler Me.theInkAnalyzer.ContextNodeLinkAdding, AddressOf Me.AddContextNodeLink
    AddHandler Me.theInkAnalyzer.ContextNodeLinkDeleting, AddressOf Me.RemoveContextNodeLink
    AddHandler Me.theInkAnalyzer.ContextNodeMovingToPosition, AddressOf Me.MoveContextNodeToPosition
    AddHandler Me.theInkAnalyzer.ContextNodePropertiesUpdated, AddressOf Me.UpdateContextNodeProperties
    AddHandler Me.theInkAnalyzer.ContextNodeReparenting, AddressOf Me.ReparentContextNode
    AddHandler Me.theInkAnalyzer.InkAnalyzerStateChanging, AddressOf Me.InkAnalyzer_StateChanging
    AddHandler Me.theInkAnalyzer.StrokesReparented, AddressOf Me.ReparentStrokes
    AddHandler Me.theInkAnalyzer.IntermediateResultsUpdated, AddressOf Me.ResultsAvailable
    AddHandler Me.theInkAnalyzer.ResultsUpdated, AddressOf Me.ResultsAvailable

End Sub 'AttachDataProxyEventHandlers

        private void AttachDataProxyEventHandlers()
        {
            // If the document model supports on demand data proxy, then add an
            // event handler for the PopulateContextNode event. This event is raised
            // when the InkAnalyzer accesses a partially populated ContextNode created
            // by the document model.
            if (this.theDocumentModel.SupportsOnDemandDataProxy)
            {
                this.theInkAnalyzer.PopulateContextNode +=
                    new PopulateContextNodeEventHandler(
                        this.PopulateContextNode);
            }

            // Add the other data proxy related event handlers. These events are raised
            // by the InkAnalyzer to communicate ink analysis results to the document model.
            this.theInkAnalyzer.ContextNodeCreated +=
                new ContextNodeCreatedEventHandler(
                    this.AddContextNode);
            this.theInkAnalyzer.ContextNodeDeleting +=
                new ContextNodeDeletingEventHandler(
                    this.RemoveContextNode);
            this.theInkAnalyzer.ContextNodeLinkAdding +=
                new ContextNodeLinkAddingEventHandler(
                    this.AddContextNodeLink);
            this.theInkAnalyzer.ContextNodeLinkDeleting +=
                new ContextNodeLinkDeletingEventHandler(
                    this.RemoveContextNodeLink);
            this.theInkAnalyzer.ContextNodeMovingToPosition +=
                new ContextNodeMovingToPositionEventHandler(
                    this.MoveContextNodeToPosition);
            this.theInkAnalyzer.ContextNodePropertiesUpdated +=
                new ContextNodePropertiesUpdatedEventHandler(
                    this.UpdateContextNodeProperties);
            this.theInkAnalyzer.ContextNodeReparenting +=
                new ContextNodeReparentingEventHandler(
                    this.ReparentContextNode);
            this.theInkAnalyzer.InkAnalyzerStateChanging +=
                new InkAnalyzerStateChangingEventHandler(
                    this.InkAnalyzer_StateChanging);
            this.theInkAnalyzer.StrokesReparented +=
                new StrokesReparentedEventHandler(
                    this.ReparentStrokes);
            this.theInkAnalyzer.IntermediateResultsUpdated +=
                new ResultsUpdatedEventHandler(
                    this.ResultsAvailable);
            this.theInkAnalyzer.ResultsUpdated +=
                new ResultsUpdatedEventHandler(
                    this.ResultsAvailable);
        }

Im folgenden Beispiel wird die RemoveContextNodeLink-Methode definiert, die das ContextNodeLinkDeleting-Ereignis behandelt. Die Ereignisinformationen werden an das Dokumentmodellobjekt mit dem Namen theDocumentModel übergeben.

Dieses Beispiel liefert nicht die Definition des Dokumentmodells und veranschaulicht nicht, wie die übergebenen Informationen verarbeitet werden.

'/ <summary>
'/ Handles the InkAnalyzer.ContextNodeLinkDeleting event.
'/ </summary>
'/ <param name="sender">The source of the event.</param>
'/ <param name="e">The event data.</param>
Private Sub RemoveContextNodeLink(ByVal sender As Object, ByVal e As ContextNodeLinkDeletingEventArgs) 
    Me.theDocumentModel.RemoveLink(e.LinkToBeDeleted)

End Sub 'RemoveContextNodeLink

        /// <summary>
        /// Handles the InkAnalyzer.ContextNodeLinkDeleting event.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The event data.</param>
        private void RemoveContextNodeLink(
            object sender, ContextNodeLinkDeletingEventArgs e)
        {
            this.theDocumentModel.RemoveLink(e.LinkToBeDeleted);
        }

Plattformen

Windows Vista

.NET Framework und .NET Compact Framework unterstützen nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen für .NET Framework.