ContextLink - класс

Статья
11/04/2008

Обновлен: Ноябрь 2007

Represents a relationship between two ContextNode objects that is not a parent-child relationship.

Пространство имен: Microsoft.Ink
Сборка: Microsoft.Ink.Analysis (в Microsoft.Ink.Analysis.dll)

Синтаксис

'Декларация
Public Class ContextLink
'Применение
Dim instance As ContextLink

public class ContextLink

public ref class ContextLink

public class ContextLink

public class ContextLink

Заметки

Examples of the relationship represented by a ContextLink relationship include:

A ParagraphNode that is encircled by an InkDrawingNode. A ContextLink object with a is created and added to the Links properties of both the ParagraphNode and the InkDrawingNode. The SourceNode is the InkDrawingNode and the DestinationNode is the ParagraphNode.
An AnalysisHintNode and a WritingRegionNode. When an AnalysisHintNode is used in ink analysis, a ContextLink is created between the WritingRegionNode and the AnalysisHintNode. The SourceNode is the AnalysisHintNode and the DestinationNode is the WritingRegionNode.
Two InkDrawingNode objects where a line is drawn between them, as in a flow chart.

To determine the relationship between SourceNode and DestinationNode uses the InkDrawingNode.SemanticType or WritingRegionNode.SemanticType property on the appropriate node.

Примеры

The following example finds all the nodes that are linked to ContextNode node, selectedNode. If selectedNode is not a destination node, the destination node is added to an ArrayList, destinationNodes. If selectedNode is not the source node, it is added to an ArrayList, sourceNodes.

Dim destinationNodes As ArrayList = New ArrayList()
Dim sourceNodes As ArrayList = New ArrayList()

' Find all the nodes that link to the currently selected node.
For Each link As Microsoft.Ink.ContextLink In selectedNode.Links
    If link.DestinationNode <> selectedNode Then
        destinationNodes.Add(link.DestinationNode)
    End If

    If link.SourceNode <> selectedNode Then
        sourceNodes.Add(link.SourceNode)
    End If
Next

ArrayList destinationNodes = new ArrayList();
ArrayList sourceNodes = new ArrayList();

// Find all the nodes that link to the currently selected node.
foreach (Microsoft.Ink.ContextLink link in selectedNode.Links)
{
    if (link.DestinationNode != selectedNode)
    {
        destinationNodes.Add(link.DestinationNode);
    }

    if (link.SourceNode != selectedNode)
    {
        sourceNodes.Add(link.SourceNode);
    }

}

The following example finds all WritingRegionNode objects in the node tree of an InkAnalyzer, theInkAnalyzerWithHint. It then puts those that are linked to an AnalysisHintNode with a Factoid of "IS_DATE_FULLDATE" into a ContextNodeCollection, writingRegionsWithFactoids.

Dim writingRegionsWithFactoids As _
    New ContextNodeCollection(Me.theInkAnalyzerWithHint)
Dim allWritingRegions As ContextNodeCollection = _
    Me.theInkAnalyzerWithHint.FindNodesOfType( _
        Microsoft.Ink.ContextNodeType.WritingRegion)
Dim writingRegion As WritingRegionNode
For Each writingRegion In allWritingRegions
    ' See if they are linked to any factoid
    Dim link As ContextLink
    For Each link In writingRegion.Links
        If link.SourceNode.Type = ContextNodeType.AnalysisHint Then
            Dim hint As AnalysisHintNode = _
                CType(link.SourceNode, AnalysisHintNode)
            If hint.Factoid = "IS_DATE_FULLDATE" Then
                writingRegionsWithFactoids.Add(writingRegion)
            End If
        End If
    Next link
Next writingRegion

ContextNodeCollection writingRegionsWithFactoids = 
    new ContextNodeCollection(this.theInkAnalyzerWithHint);
ContextNodeCollection allWritingRegions =
    this.theInkAnalyzerWithHint.FindNodesOfType(Microsoft.Ink.ContextNodeType.WritingRegion);
foreach (WritingRegionNode writingRegion in allWritingRegions)
{
    // See if they are linked to any factoid
    foreach (ContextLink link in writingRegion.Links)
    {
        if (link.SourceNode.Type == ContextNodeType.AnalysisHint)
        {
            AnalysisHintNode hint = (AnalysisHintNode) link.SourceNode;
            if (hint.Factoid == "IS_DATE_FULLDATE")
            {
                writingRegionsWithFactoids.Add(writingRegion);
            }
        }
    }
}

Иерархия наследования

System.Object
Microsoft.Ink.ContextLink

Потокобезопасность

Любые открытые члены этого типа, объявленные как static (Shared в Visual Basic), являются потокобезопасными. Потокобезопасность членов экземпляров не гарантируется.

Платформы

Windows Vista

Среды .NET Framework и .NET Compact Framework поддерживают не все версии каждой платформы. Поддерживаемые версии перечислены в разделе Требования к системе для .NET Framework.