InkAnalyzerBase.PopulateContextNodeBase 事件

项目
10/28/2008

在墨迹分析器在部分填充的 ContextNodeBase 的区域内执行分析之前发生。

命名空间： System.Windows.Ink.AnalysisCore
程序集： IACore（在 IACore.dll 中）

语法

声明
Public Event PopulateContextNodeBase As PopulateContextNodeBaseEventHandler
用法
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);
}

/** @event */
public void add_PopulateContextNodeBase (PopulateContextNodeBaseEventHandler value)
/** @event */
public void remove_PopulateContextNodeBase (PopulateContextNodeBaseEventHandler value)

JScript 不支持事件。

备注

如果您的应用程序维护其自己的数据结构（该数据结构与 InkAnalyzerBase 的数据结构同步），请使用此事件。在墨迹分析器引发此事件时，应用程序应填充 PopulateContextNodeBaseEventArgs.NodeToPopulate。在分析阶段中，墨迹分析器引发此事件以获取在其中分析墨迹的区域的信息。

如果文档中包含 NodeToPopulate 的链接，则应用程序应创建并添加这些链接。此过程要求在此事件的事件处理程序存在之前，源节点和目标节点以及这些节点的上级节点都必须完全填充。

有关将应用程序数据与 InkAnalyzerBase 同步的更多信息，请参见Data Proxy with Ink Analysis。

在后台分析过程中，墨迹分析器在引发 ReadyToReconcileBase 事件之后引发此事件。

示例

下面的示例定义方法 AttachDataProxyEventHandlers，该方法将数据代理事件处理程序附加到 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);
        }

下面的示例定义 PopulateContextNodeBase 方法，用以处理 PopulateContextNodeBase 事件。事件信息将传递给文档模型对象 baseDocumentModel。

此示例不提供文档模型的定义，也不演示文档模型如何处理传入的信息。

''' <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);
        }