ImageNode Class
Represents a ContextNode for a two-dimensional region where any non-ink images may exist in the application.
Assembly: Microsoft.Ink.Analysis (in Microsoft.Ink.Analysis.dll)
The InkAnalyzer does not produce ImageNode objects. The application uses the ContextNode.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 object to an InkAnalyzer, theInkAnalyzer, for a PictureBox control, thePictureBox. It converts the location of the PictureBox control from pixel coordinates to ink coordinates. It sets the Data property of the ImageNode object to be the Image property of the PictureBox.
' Add image node Dim pictureNode As ImageNode = _ theInkAnalyzer.RootNode.CreateSubNode(Microsoft.Ink.ContextNodeType.Image) ' Convert pixel coordinates to pixel coordinates Dim pictureTopLeft As Point = thePictureBox.Location Dim pictureBottomRight As New Point(thePictureBox.Right, thePictureBox.Bottom) Dim panelGraphics As Graphics = theNotesPanel.CreateGraphics() theInkCollector.Renderer.PixelToInkSpace(panelGraphics, pictureTopLeft) theInkCollector.Renderer.PixelToInkSpace(panelGraphics, pictureBottomRight) panelGraphics.Dispose() ' Set the location of the image node pictureNode.SetLocation(New AnalysisRegion(New Rectangle(pictureTopLeft.X, _ pictureTopLeft.Y, pictureBottomRight.X - pictureTopLeft.X, _ pictureBottomRight.Y - pictureTopLeft.Y))) ' Serialize the image to a byte array and set ImageNode.Data to the array. Using stream As System.IO.MemoryStream = New System.IO.MemoryStream() thePictureBox.Image.Save(stream, thePictureBox.Image.RawFormat) pictureNode.Data = stream.ToArray() End Using
Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008
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.