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)
Syntax
'Declaration
Public Event PopulateContextNodeBase As PopulateContextNodeBaseEventHandler
'Usage
Dim instance As InkAnalyzerBase
Dim handler As PopulateContextNodeBaseEventHandler
AddHandler instance.PopulateContextNodeBase, handler
public event PopulateContextNodeBaseEventHandler PopulateContextNodeBase
public:
event PopulateContextNodeBaseEventHandler^ PopulateContextNodeBase {
void add (PopulateContextNodeBaseEventHandler^ value);
void remove (PopulateContextNodeBaseEventHandler^ value);
}
JScript does not support events.
Remarks
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.
Examples
The following example defines a method, AttachDataProxyEventHandlers, that attaches data proxy event handlers to an InkAnalyzerBase, baseInkAnalyzer.
Private Sub 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 Me.baseDocumentModel.SupportsOnDemandDataProxy Then
AddHandler Me.baseInkAnalyzer.PopulateContextNodeBase, AddressOf Me.PopulateContextNodeBase
End If
' Add the other data proxy related event handlers. These events are raised
' by the InkAnalyzer to communicate parsing results to the document model.
AddHandler Me.baseInkAnalyzer.ContextNodeCreatedBase, _
AddressOf Me.AddContextNodeBase
AddHandler Me.baseInkAnalyzer.ContextNodeDeletingBase, _
AddressOf Me.RemoveContextNodeBase
AddHandler Me.baseInkAnalyzer.ContextNodeLinkAddingBase, _
AddressOf Me.AddContextNodeLinkBase
AddHandler Me.baseInkAnalyzer.ContextNodeLinkDeletingBase, _
AddressOf Me.RemoveContextNodeLinkBase
AddHandler Me.baseInkAnalyzer.ContextNodeMovingToPositionBase, _
AddressOf Me.MoveContextNodeBaseToPosition
AddHandler Me.baseInkAnalyzer.ContextNodePropertiesUpdatedBase, _
AddressOf Me.UpdateContextNodeBaseProperties
AddHandler Me.baseInkAnalyzer.ContextNodeReparentingBase, _
AddressOf Me.ReparentContextNodeBase
AddHandler Me.baseInkAnalyzer.InkAnalyzerStateChangingBase, _
AddressOf Me.InkAnalyzerBase_StateChanging
AddHandler Me.baseInkAnalyzer.StrokesReparentedBase, _
AddressOf Me.ReparentStroke
AddHandler Me.baseInkAnalyzer.IntermediateResultsUpdatedBase, _
AddressOf Me.BaseResultsAvailable
AddHandler Me.baseInkAnalyzer.ResultsUpdatedBase, _
AddressOf Me.BaseResultsAvailable
End Sub 'AttachDataProxyEventHandlers
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 Sub PopulateContextNodeBase( _
ByVal sender As Object, _
ByVal e As System.Windows.Ink.AnalysisCore.PopulateContextNodeBaseEventArgs)
Me.baseDocumentModel.PopulateNode( _
e.NodeToPopulate, CType(sender, System.Windows.Ink.AnalysisCore.InkAnalyzerBase))
End Sub 'PopulateContextNodeBase
/// <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);
}
Platforms
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.
Version Information
.NET Framework
Supported in: 3.0
See Also
Reference
System.Windows.Ink.AnalysisCore Namespace
System.Windows.Ink.AnalysisCore.ContextNodeBase