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InkAnalyzerBase.PopulateContextNodeBase Event

Occurs before the ink analyzer performs analysis within the region of a partially populated ContextNodeBase.

Namespace:  System.Windows.Ink.AnalysisCore
Assembly:  IACore (in IACore.dll)

public event PopulateContextNodeBaseEventHandler PopulateContextNodeBase

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

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

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

During background analysis, the ink analyzer raises this event after it raises the ReadyToReconcileBase event.

The following example defines a method, AttachDataProxyEventHandlers, that attaches data proxy event handlers to an InkAnalyzerBase, baseInkAnalyzer.

		private void AttachDataProxyEventHandlers()
		{
			// If the document model supports on demand data proxy, then add an 
			// event handler for the PopulateContextNodeBase event. This event is raised 
			// when the InkAnalyzerBase accesses a partially populated ContextNodeBase 
            // created by the document model. 
			if (this.baseDocumentModel.SupportsOnDemandDataProxy)
			{
				this.baseInkAnalyzer.PopulateContextNodeBase +=
					new System.Windows.Ink.AnalysisCore.PopulateContextNodeBaseEventHandler(
						this.PopulateContextNodeBase);
			}

			// Add the other data proxy related event handlers. These events are raised 
			// by the InkAnalyzer to communicate parsing results to the document model. 
            this.baseInkAnalyzer.ContextNodeCreatedBase +=
                new System.Windows.Ink.AnalysisCore.ContextNodeCreatedBaseEventHandler(
                    this.AddContextNodeBase);
            this.baseInkAnalyzer.ContextNodeDeletingBase +=
                new System.Windows.Ink.AnalysisCore.ContextNodeDeletingBaseEventHandler(
                    this.RemoveContextNodeBase);
            this.baseInkAnalyzer.ContextNodeLinkAddingBase +=
                new System.Windows.Ink.AnalysisCore.ContextNodeLinkAddingBaseEventHandler(
                    this.AddContextNodeLinkBase);
            this.baseInkAnalyzer.ContextNodeLinkDeletingBase +=
                new System.Windows.Ink.AnalysisCore.ContextNodeLinkDeletingBaseEventHandler(
                    this.RemoveContextNodeLinkBase);
            this.baseInkAnalyzer.ContextNodeMovingToPositionBase +=
                new System.Windows.Ink.AnalysisCore.ContextNodeMovingToPositionBaseEventHandler(
                    this.MoveContextNodeBaseToPosition);
            this.baseInkAnalyzer.ContextNodePropertiesUpdatedBase +=
                new System.Windows.Ink.AnalysisCore.ContextNodePropertiesUpdatedBaseEventHandler(
                    this.UpdateContextNodeBaseProperties);
            this.baseInkAnalyzer.ContextNodeReparentingBase +=
                new System.Windows.Ink.AnalysisCore.ContextNodeReparentingBaseEventHandler(
                    this.ReparentContextNodeBase);
            this.baseInkAnalyzer.InkAnalyzerStateChangingBase +=
                new System.Windows.Ink.AnalysisCore.InkAnalyzerStateChangingBaseEventHandler(
                    this.InkAnalyzerBase_StateChanging);
            this.baseInkAnalyzer.StrokesReparentedBase +=
                new System.Windows.Ink.AnalysisCore.StrokesReparentedBaseEventHandler(
					this.ReparentStroke);
            this.baseInkAnalyzer.IntermediateResultsUpdatedBase +=
                new System.Windows.Ink.AnalysisCore.ResultsUpdatedBaseEventHandler(
                    this.BaseResultsAvailable);
            this.baseInkAnalyzer.ResultsUpdatedBase +=
                new System.Windows.Ink.AnalysisCore.ResultsUpdatedBaseEventHandler(
                    this.BaseResultsAvailable);
        }

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

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

        /// <summary> 
        /// Handles the InkAnalyzerBase.PopulateContextNodeBase 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 ContextNodeBase from the document model. 
        /// The InkAnalyzerBase calls this event handler when it accesses a partially 
        /// populated ContextNodeBase created by the document model. 
		/// </remarks> 
        private void PopulateContextNodeBase(
            object sender, System.Windows.Ink.AnalysisCore.PopulateContextNodeBaseEventArgs e)
		{
			this.baseDocumentModel.PopulateNode(
                e.NodeToPopulate,
                (System.Windows.Ink.AnalysisCore.InkAnalyzerBase)sender);
		}

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.0
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