ImageNode.Data-Eigenschaft
Ruft anwendungsdefinierte Daten für das ImageNode-Objekt ab und legt diese fest.
Namespace: Microsoft.Ink
Assembly: Microsoft.Ink.Analysis (in Microsoft.Ink.Analysis.dll)
Syntax
'Declaration
Public Property Data As Object
'Usage
Dim instance As ImageNode
Dim value As Object
value = instance.Data
instance.Data = value
public Object Data { get; set; }
public:
property Object^ Data {
Object^ get ();
void set (Object^ value);
}
/** @property */
public Object get_Data()
/** @property */
public void set_Data(Object value)
public function get Data () : Object
public function set Data (value : Object)
Eigenschaftenwert
Typ: System.Object
Die anwendungsdefinierten Daten für das ImageNode-Objekt.
Hinweise
Verwenden Sie diese Eigenschaft, um dem ImageNode-Objekt Ihre eigenen Daten hinzuzufügen.
Beispiele
Im folgenden Beispiel wird dem InkAnalyzer mit dem Namen theInkAnalyzer, für das PictureBox-Steuerelement thePictureBox ein ImageNode-Objekt hinzugefügt. Konvertiert die Position des PictureBox-Steuerelements von Pixelkoordinaten in Freihandkoordinaten. Legt die Data-Eigenschaft des ImageNode-Objekts auf die Image-Eigenschaft der PictureBox fest.
' 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
// Add image node
ImageNode pictureNode = (ImageNode)
theInkAnalyzer.RootNode.CreateSubNode(Microsoft.Ink.ContextNodeType.Image);
// Convert pixel coordinates to pixel coordinates
Point pictureTopLeft = thePictureBox.Location;
Point pictureBottomRight = new Point(thePictureBox.Right,
thePictureBox.Bottom);
Graphics panelGraphics = theNotesPanel.CreateGraphics();
theInkCollector.Renderer.PixelToInkSpace(panelGraphics, ref pictureTopLeft);
theInkCollector.Renderer.PixelToInkSpace(panelGraphics, ref 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 (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
thePictureBox.Image.Save(stream, thePictureBox.Image.RawFormat);
pictureNode.Data = stream.ToArray();
}
Plattformen
Windows Vista
.NET Framework und .NET Compact Framework unterstützen nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen für .NET Framework.
Versionsinformationen
.NET Framework
Unterstützt in: 3.0