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InkAnalyzer.ContextNodeCreated-Ereignis

Tritt auf, nachdem InkAnalyzer einen ContextNode erstellt hat.

Namespace:  Microsoft.Ink
Assembly:  Microsoft.Ink.Analysis (in Microsoft.Ink.Analysis.dll)

Syntax

'Declaration
Public Event ContextNodeCreated As ContextNodeCreatedEventHandler
'Usage
Dim instance As InkAnalyzer
Dim handler As ContextNodeCreatedEventHandler

AddHandler instance.ContextNodeCreated, handler
public event ContextNodeCreatedEventHandler ContextNodeCreated
public:
 event ContextNodeCreatedEventHandler^ ContextNodeCreated {
    void add (ContextNodeCreatedEventHandler^ value);
    void remove (ContextNodeCreatedEventHandler^ value);
}
/** @event */
public void add_ContextNodeCreated (ContextNodeCreatedEventHandler value)
/** @event */
public void remove_ContextNodeCreated (ContextNodeCreatedEventHandler value)
JScript unterstützt keine Ereignisse.

Hinweise

Verwenden Sie dieses Ereignis, wenn die Anwendung eine eigene Datenstruktur verwaltet, die mit der Datenstruktur von InkAnalyzer synchronisiert wird. Dieses Ereignis tritt während der Abgleichphase der Freihandanalyse oder als Antwort auf eine InkAnalyzer-Methode auf, die einen ContextNode erstellt.

Wenn InkAnalyzer einen ContextNode erstellt, enthält der neue ContextNode keine Striche und keine Links zu anderen ContextNode-Objekten. Zudem sind möglicherweise nicht alle seine Eigenschaften festgelegt. Außerdem wird der neue ContextNode am Ende der SubNodes-Auflistung seines übergeordneten Elements hinzugefügt. Nach diesem Ereignis löst der InkAnalyzer möglicherweise die folgenden Ereignisse aus.

Weitere Informationen über das 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.ReparentStroke
    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 Microsoft.Ink.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 Microsoft.Ink.ContextNodeCreatedEventHandler(
                    this.AddContextNode);
            this.theInkAnalyzer.ContextNodeDeleting +=
                new Microsoft.Ink.ContextNodeDeletingEventHandler(
                    this.RemoveContextNode);
            this.theInkAnalyzer.ContextNodeLinkAdding +=
                new Microsoft.Ink.ContextNodeLinkAddingEventHandler(
                    this.AddContextNodeLink);
            this.theInkAnalyzer.ContextNodeLinkDeleting +=
                new Microsoft.Ink.ContextNodeLinkDeletingEventHandler(
                    this.RemoveContextNodeLink);
            this.theInkAnalyzer.ContextNodeMovingToPosition +=
                new Microsoft.Ink.ContextNodeMovingToPositionEventHandler(
                    this.MoveContextNodeToPosition);
            this.theInkAnalyzer.ContextNodePropertiesUpdated +=
                new Microsoft.Ink.ContextNodePropertiesUpdatedEventHandler(
                    this.UpdateContextNodeProperties);
            this.theInkAnalyzer.ContextNodeReparenting +=
                new Microsoft.Ink.ContextNodeReparentingEventHandler(
                    this.ReparentContextNode);
            this.theInkAnalyzer.InkAnalyzerStateChanging +=
                new Microsoft.Ink.InkAnalyzerStateChangingEventHandler(
                    this.InkAnalyzer_StateChanging);
            this.theInkAnalyzer.StrokesReparented +=
                new Microsoft.Ink.StrokesReparentedEventHandler(
                    this.ReparentStrokes);
            this.theInkAnalyzer.IntermediateResultsUpdated +=
                new Microsoft.Ink.ResultsUpdatedEventHandler(
                    this.ResultsAvailable);
            this.theInkAnalyzer.ResultsUpdated +=
                new Microsoft.Ink.ResultsUpdatedEventHandler(
                    this.ResultsAvailable);
        }

Im folgenden Beispiel wird die Methode AddContextNode definiert, die das ContextNodeCreated-Ereignis behandelt. Die Ereignisinformationen werden an das Dokumentmodellobjekt theDocumentModel übergeben.

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

'/ <summary>
'/ Handles the InkAnalyzer.ContextNodeCreated event.
'/ </summary>
'/ <param name="sender">The source of the event.</param>
'/ <param name="e">The event data.</param>
'/ <remarks>
'/ Note: when this event is fired, the ContextNode has not been populated
'/ with extended and other properties. Handle the ContextNodePropertiesUpdated
'/ event to populate the corresponding ContextNode in the document model.
'/ </remarks>
Private Sub AddContextNode( _
    ByVal sender As Object, _
    ByVal e As Microsoft.Ink.ContextNodeCreatedEventArgs)

    ' Do not add unclassified ink nodes to the document model.
    If Microsoft.Ink.ContextNodeType.UnclassifiedInk _
        <> e.NodeCreated.Type Then

        Me.theDocumentModel.AddNode(e.NodeCreated)
    End If

End Sub 'AddContextNode

        /// <summary>
        /// Handles the InkAnalyzer.ContextNodeCreated event.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The event data.</param>
        /// <remarks>
        /// Note: when this event is fired, the ContextNode has not been populated
        /// with extended and other properties. Handle the ContextNodePropertiesUpdated
        /// event to populate the corresponding ContextNode in the document model.
        /// </remarks>
        private void AddContextNode(
            object sender, Microsoft.Ink.ContextNodeCreatedEventArgs e)
        {
            // Do not add unclassified ink nodes to the document model.
            if (Microsoft.Ink.ContextNodeType.UnclassifiedInk
                != e.NodeCreated.Type)
            {
                this.theDocumentModel.AddNode(e.NodeCreated);
            }
        }

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.

Versionsinformationen

.NET Framework

Unterstützt in: 3.0

Siehe auch

Referenz

InkAnalyzer-Klasse

InkAnalyzer-Member

Microsoft.Ink-Namespace

InkAnalyzer.ContextNodeDeleting

InkAnalyzer.ContextNodeLinkAdding

InkAnalyzer.ContextNodeMovingToPosition

InkAnalyzer.ContextNodePropertiesUpdated

InkAnalyzer.StrokesReparented

Microsoft.Ink.ContextNodeCreatedEventArgs