TextWordNode Class

Článek
10/19/2012

Represents a ContextNode for a two-dimensional region where non-ink text words may exist in the application.

Namespace: System.Windows.Ink
Assembly: IAWinFX (in IAWinFX.dll)

Syntax

'Declaration
Public NotInheritable Class TextWordNode _
    Inherits ContextNode
'Usage
Dim instance As TextWordNode

public sealed class TextWordNode : ContextNode

public ref class TextWordNode sealed : public ContextNode

public final class TextWordNode extends ContextNode

Remarks

The InkAnalyzer does not produce TextWordNode objects. The application uses the CreateSubNode(ContextNodeType) method to add TextWordNode objects to the context node tree. If the state of the analyzer is persisted, these nodes can be persisted as well.

Future recognizers may use the regions defined by the TextWordNode objects to determine whether any ink annotates the non-ink word.

A TextWordNode cannot have any child nodes.

Examples

The following example adds a TextWordNode object to an InkAnalyzer named theInkAnalyzer for a TextBox control named theTextBox. It sets the Data property of the TextWordNode object to the Text property of the TextBox.

' Add nodes to hold the TextWordNode 
Dim writingRegion As WritingRegionNode = _
    CType(theInkAnalyzer.RootNode.CreateSubNode(ContextNodeType.WritingRegion), _
    WritingRegionNode)

Dim paragraph As ParagraphNode = _
    CType(writingRegion.CreateSubNode(ContextNodeType.Paragraph), _
    ParagraphNode)

Dim line As LineNode = _
    CType(paragraph.CreateSubNode(ContextNodeType.Line), LineNode)

' Create node for the word 
Dim textWord As TextWordNode = _
    CType(line.CreateSubNode(ContextNodeType.TextWord), TextWordNode)

' Set location 
Dim textTop As Double = InkCanvas.GetTop(theTextBox)
Dim textLeft As Double = InkCanvas.GetLeft(theTextBox)

Dim rectLocation As New Rect(textLeft, textTop, theTextBox.Width, theTextBox.Height)
textWord.SetLocation(New AnalysisRegion(rectLocation))

' Set the data property to be the text in the textbox.
textWord.Data = theTextBox.Text

// Add nodes to hold the TextWordNode
WritingRegionNode writingRegion = (WritingRegionNode)
    theInkAnalyzer.RootNode.CreateSubNode(ContextNodeType.WritingRegion);
ParagraphNode paragraph = (ParagraphNode)
    writingRegion.CreateSubNode(ContextNodeType.Paragraph);
LineNode line = (LineNode)
    paragraph.CreateSubNode(ContextNodeType.Line);

// Create node for the word
TextWordNode textWord = (TextWordNode)
    line.CreateSubNode(ContextNodeType.TextWord);


// Set location 
double textTop = InkCanvas.GetTop(theTextBox);
double textLeft = InkCanvas.GetLeft(theTextBox);

Rect rectLocation = new Rect(textLeft, textTop, theTextBox.Width, theTextBox.Height);
textWord.SetLocation(new AnalysisRegion(rectLocation));

// Set the data property to be the text in the textbox.
textWord.Data = theTextBox.Text;

Inheritance Hierarchy

System.Object
System.Windows.Ink.ContextNode
System.Windows.Ink.TextWordNode

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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

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