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ImageNode Class

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

Namespace: System.Windows.Ink
Assembly: IAWinFX (in iawinfx.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

'Declaration
Public NotInheritable Class ImageNode
	Inherits ContextNode
'Usage
Dim instance As ImageNode

public final class ImageNode extends ContextNode
public final class ImageNode extends ContextNode
Not applicable.

The InkAnalyzer does not produce ImageNode objects. The application uses the CreateSubNode method to add the ImageNode 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 ImageNode objects to determine if any ink annotates the non-ink image.

An ImageNode cannot have any children.

The following example adds an ImageNode to an InkAnalyzer, theInkAnalyzer, for an Image, theImage. It sets the location of the ImageNode to the location of the Image and the Data property to the Source property of the Image.

' Add image node
Dim pictureNode As ImageNode = _
    CType(theInkAnalyzer.RootNode.CreateSubNode(ContextNodeType.Image), _
    ImageNode)

' Set the location of the image node
Dim imageTop As Double = InkCanvas.GetTop(theImage)
Dim imageLeft As Double = InkCanvas.GetLeft(theImage)

Dim imageBounds As New Rect(imageLeft, imageTop, theImage.Width, theImage.Height)
pictureNode.SetLocation(New AnalysisRegion(imageBounds))

' Serialize the image to a byte array and set ImageNode.Data to the array.
' theImage.Source is a BitmapImage.
Dim bmp As New BmpBitmapEncoder()
bmp.Frames.Add(BitmapFrame.Create(CType(theImage.Source, BitmapImage)))
Dim stream As New System.IO.MemoryStream()
Try
    bmp.Save(stream)
    pictureNode.Data = stream.ToArray()
Finally
    stream.Dispose()
End Try

System.Object
   System.Windows.Ink.ContextNode
    System.Windows.Ink.ImageNode

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

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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