Export (0) Print
Expand All

InkAnalyzer.ContextNodeDeleting Event

Occurs before the InkAnalyzer deletes a ContextNode.

Namespace: Microsoft.Ink
Assembly: Microsoft.Ink.Analysis (in microsoft.ink.analysis.dll)

public event ContextNodeDeletingEventHandler ContextNodeDeleting
/** @event */
public void add_ContextNodeDeleting (ContextNodeDeletingEventHandler value)

/** @event */
public void remove_ContextNodeDeleting (ContextNodeDeletingEventHandler 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. This event occurs during the reconcile phase of ink analysis, or in response to an InkAnalyzer method that deletes a ContextNode.

Before the InkAnalyzer deletes a ContextNode, the InkAnalyzer removes all of the strokes from the ContextNode and removes all of the links to other ContextNode objects. Before the ContextNode is removed, InkAnalyzer may raise the following events.

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

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 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);
}

The following example defines the method, RemoveContextNode, that handles the ContextNodeDeleting 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.ContextNodeDeleting event.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The event data.</param>
private void RemoveContextNode(
    object sender, Microsoft.Ink.ContextNodeDeletingEventArgs e)
{
    // Do not remove unclassified ink nodes from the document model.
    if (Microsoft.Ink.ContextNodeType.UnclassifiedInk
        != e.NodeToBeDeleted.Type)
    {
        this.theDocumentModel.RemoveNode(e.NodeToBeDeleted);
    }
}

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

Community Additions

ADD
Show:
© 2014 Microsoft