InkAnalyzer.ContextNodeCreated 事件

發行項
10/29/2008

命名空間： Microsoft.Ink
組件： Microsoft.Ink.Analysis (在 Microsoft.Ink.Analysis.dll 中)

語法

'宣告
Public Event ContextNodeCreated As ContextNodeCreatedEventHandler
'用途
Dim instance As InkAnalyzer
Dim handler As ContextNodeCreatedEventHandler

AddHandler instance.ContextNodeCreated, handler

public event ContextNodeCreatedEventHandler ContextNodeCreated

public:
 event ContextNodeCreatedEventHandler^ ContextNodeCreated {
    void add (ContextNodeCreatedEventHandler^ value);
    void remove (ContextNodeCreatedEventHandler^ value);
}

/** @event */
public void add_ContextNodeCreated (ContextNodeCreatedEventHandler value)
/** @event */
public void remove_ContextNodeCreated (ContextNodeCreatedEventHandler value)

JScript 不支援事件。

備註

當您的應用程式維護本身的資料結構時使用這個事件，該資料結構會與 InkAnalyzer 的資料結構同步處理。這個事件會在筆墨分析的協調階段，或是回應建立 ContextNode 的 InkAnalyzer 方法時發生。

當 InkAnalyzer 建立 ContextNode 時，新的 ContextNode 不會包含任何筆劃、不會包含其他 ContextNode 物件的連結，也不會包含其所有屬性集。同時，新的 ContextNode 會加入至其父代 SubNodes 集合的結尾。在這個事件之後，InkAnalyzer 可能會引發下列事件。

將筆劃從其中一個 ContextNode 移到另一個時，會引發 StrokesReparented 事件。
將 ContextLink 加入至 ContextNode 時引發 ContextNodeLinkAdding 事件。
變更 ContextNode 物件在其父節點之 SubNodes 集合中的順序時引發 ContextNodeMovingToPosition 事件。
針對這個分析階段解析 ContextNode 的狀態時引發 ContextNodePropertiesUpdated 事件。

如需將應用程式資料與 InkAnalyzer 進行同步處理的詳細資訊，請參閱Data Proxy with Ink Analysis。

範例

這個範例會定義 AttachDataProxyEventHandlers 方法，將資料 Proxy 事件處理常式附加至 InkAnalyzer，也就是 theInkAnalyzer。

Private Sub 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 Me.theDocumentModel.SupportsOnDemandDataProxy Then
        AddHandler Me.theInkAnalyzer.PopulateContextNode, AddressOf Me.PopulateContextNode
    End If

    ' Add the other data proxy related event handlers. These events are raised
    ' by the InkAnalyzer to communicate ink analysis results to the document model.
    AddHandler Me.theInkAnalyzer.ContextNodeCreated, AddressOf Me.AddContextNode
    AddHandler Me.theInkAnalyzer.ContextNodeDeleting, AddressOf Me.RemoveContextNode
    AddHandler Me.theInkAnalyzer.ContextNodeLinkAdding, AddressOf Me.AddContextNodeLink
    AddHandler Me.theInkAnalyzer.ContextNodeLinkDeleting, AddressOf Me.RemoveContextNodeLink
    AddHandler Me.theInkAnalyzer.ContextNodeMovingToPosition, AddressOf Me.MoveContextNodeToPosition
    AddHandler Me.theInkAnalyzer.ContextNodePropertiesUpdated, AddressOf Me.UpdateContextNodeProperties
    AddHandler Me.theInkAnalyzer.ContextNodeReparenting, AddressOf Me.ReparentContextNode
    AddHandler Me.theInkAnalyzer.InkAnalyzerStateChanging, AddressOf Me.InkAnalyzer_StateChanging
    AddHandler Me.theInkAnalyzer.StrokesReparented, AddressOf Me.ReparentStroke
    AddHandler Me.theInkAnalyzer.IntermediateResultsUpdated, AddressOf Me.ResultsAvailable
    AddHandler Me.theInkAnalyzer.ResultsUpdated, AddressOf Me.ResultsAvailable

End Sub 'AttachDataProxyEventHandlers

        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);
        }

下列範例會定義 AddContextNode 方法，以處理 ContextNodeCreated 事件。事件資訊會傳遞至 theDocumentModel 文件模型物件。

這個範例並未提供文件模型的定義，也未示範處理傳入資訊的方式。

'/ <summary>
'/ Handles the InkAnalyzer.ContextNodeCreated event.
'/ </summary>
'/ <param name="sender">The source of the event.</param>
'/ <param name="e">The event data.</param>
'/ <remarks>
'/ Note: when this event is fired, the ContextNode has not been populated
'/ with extended and other properties. Handle the ContextNodePropertiesUpdated
'/ event to populate the corresponding ContextNode in the document model.
'/ </remarks>
Private Sub AddContextNode( _
    ByVal sender As Object, _
    ByVal e As Microsoft.Ink.ContextNodeCreatedEventArgs)

    ' Do not add unclassified ink nodes to the document model.
    If Microsoft.Ink.ContextNodeType.UnclassifiedInk _
        <> e.NodeCreated.Type Then

        Me.theDocumentModel.AddNode(e.NodeCreated)
    End If

End Sub 'AddContextNode

        /// <summary>
        /// Handles the InkAnalyzer.ContextNodeCreated event.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The event data.</param>
        /// <remarks>
        /// Note: when this event is fired, the ContextNode has not been populated
        /// with extended and other properties. Handle the ContextNodePropertiesUpdated
        /// event to populate the corresponding ContextNode in the document model.
        /// </remarks>
        private void AddContextNode(
            object sender, Microsoft.Ink.ContextNodeCreatedEventArgs e)
        {
            // Do not add unclassified ink nodes to the document model.
            if (Microsoft.Ink.ContextNodeType.UnclassifiedInk
                != e.NodeCreated.Type)
            {
                this.theDocumentModel.AddNode(e.NodeCreated);
            }
        }