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InkAnalyzer.PopulateContextNode Event

Occurs before the InkAnalyzer performs analysis within the region of a partially populated ContextNode.

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

public event PopulateContextNodeEventHandler PopulateContextNode
/** @event */
public void add_PopulateContextNode (PopulateContextNodeEventHandler value)

/** @event */
public void remove_PopulateContextNode (PopulateContextNodeEventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
Not applicable.

Use this event when your application maintains its own data structure, which is synchronized with that of the InkAnalyzer. When the InkAnalyzer raises this event, your application should populate the PopulateContextNodeEventArgs.NodeToPopulate property. During the analysis phase, the InkAnalyzer raises this event to get information for areas in which it is analyzing ink.

If the document contains links for the NodeToPopulate property, your application should create and add these links. This process requires that both the source and destination nodes and their ancestors are fully populated before the event handler for this event exits.

For more information about synchronizing your application data with the InkAnalyzer, see Data Proxy with Ink Analysis.

During background analysis, the InkAnalyzer raises this event after it raises the InkAnalyzerStateChanging event.

This example defines a method, AttachDataProxyEventHandlers, that attaches data proxy event handlers to an InkAnalyzer, theInkAnalyzer.

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(

    // 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.theInkAnalyzer.ContextNodeDeleting +=
        new ContextNodeDeletingEventHandler(
    this.theInkAnalyzer.ContextNodeLinkAdding +=
        new ContextNodeLinkAddingEventHandler(
    this.theInkAnalyzer.ContextNodeLinkDeleting +=
        new ContextNodeLinkDeletingEventHandler(
    this.theInkAnalyzer.ContextNodeMovingToPosition +=
        new ContextNodeMovingToPositionEventHandler(
    this.theInkAnalyzer.ContextNodePropertiesUpdated +=
        new ContextNodePropertiesUpdatedEventHandler(
    this.theInkAnalyzer.ContextNodeReparenting +=
        new ContextNodeReparentingEventHandler(
    this.theInkAnalyzer.InkAnalyzerStateChanging +=
        new InkAnalyzerStateChangingEventHandler(
    this.theInkAnalyzer.StrokesReparented +=
        new StrokesReparentedEventHandler(
    this.theInkAnalyzer.IntermediateResultsUpdated +=
        new ResultsUpdatedEventHandler(
    this.theInkAnalyzer.ResultsUpdated +=
        new ResultsUpdatedEventHandler(

The following example defines the method, PopulateContextNode, that handles the PopulateContextNode event. The event information is passed to the document model object, theDocumentModel.

This example does not provide the definition of the document model or demonstrate how it processes the information passed to it.

/// <summary>
/// Handles the InkAnalyzer.PopulateContextNode event.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The event data.</param>
/// <remarks>
/// This event handler fully populates a ContextNode from the document model.
/// The InkAnalyzer calls this event handler when it accesses a partially
/// populated ContextNode created by the document model.
/// </remarks>
private void PopulateContextNode(
    object sender, PopulateContextNodeEventArgs e)
        e.NodeToPopulate, (InkAnalyzer)sender);

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

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

.NET Framework

Supported in: 3.0