Classe ContextNodeType

Articolo
10/29/2008

Aggiornamento: novembre 2007

Definisce i valori che specificano il tipo di oggetto ContextNode.

Spazio dei nomi: Microsoft.Ink
Assembly: Microsoft.Ink.Analysis (in Microsoft.Ink.Analysis.dll)

Sintassi

'Dichiarazione
Public NotInheritable Class ContextNodeType
'Utilizzo
Dim instance As ContextNodeType

public sealed class ContextNodeType

public ref class ContextNodeType sealed

public final class ContextNodeType

public final class ContextNodeType

Note

La proprietà ContextNode.Type e il metodo InkAnalyzer.FindNodesOfType utilizzano spesso i campi di questa classe.

Esempi

In questo esempio viene impostata la proprietà Text di un oggetto TextBox, selectedResultsTextBox, per visualizzare una stringa appropriata per un oggetto ContextNode, selectedNode. Viene utilizzata la proprietà Type per scegliere il tipo di testo da visualizzare, in base al tipo di oggetto ContextNode.

Select Case selectedNode.Type
    Case Microsoft.Ink.ContextNodeType.WritingRegion
        Dim writingRegion As WritingRegionNode = _
            CType(selectedNode, WritingRegionNode)
        selectedResultsTextBox.Text = writingRegion.GetRecognizedString()
    Case Microsoft.Ink.ContextNodeType.Paragraph
        Dim paragraph As ParagraphNode = _
            CType(selectedNode, ParagraphNode)
        selectedResultsTextBox.Text = paragraph.GetRecognizedString()
    Case Microsoft.Ink.ContextNodeType.Line
        Dim line As LineNode = _
            CType(selectedNode, LineNode)
        selectedResultsTextBox.Text = line.GetRecognizedString()
    Case Microsoft.Ink.ContextNodeType.InkWord
        Dim inkWord As InkWordNode = _
            CType(selectedNode, InkWordNode)
        Dim parentNode As ContextNode = inkWord.ParentNode
        If TypeOf parentNode Is LineNode Then
            Dim parentLine As LineNode = CType(parentNode, LineNode)
            ' Put parent line's recognized string into the text box
            selectedResultsTextBox.Text = parentLine.GetRecognizedString()

            ' Select the text that corresponds to the ink word
            Dim subNodes As New ContextNodeCollection(theInkAnalyzer)
            subNodes.Add(inkWord)
            Dim start As Integer
            Dim length As Integer
            parentLine.GetTextRangeFromNodes(subNodes, start, length)
            If start >= 0 AndAlso length > 0 Then
                selectedResultsTextBox.Select(start, length)
            End If
        End If
        ' Show the time stamp
        If inkWord.ContainsPropertyData(Me.timeStampGuid) Then
            Dim timeStamp As DateTime = _
                CType(inkWord.GetPropertyData(Me.timeStampGuid), DateTime)
            timeStampLabel.Text = timeStamp.ToShortTimeString()
        End If

        ' Snippet to demonstrate GetPropertyDataIds
        Dim propertyDataIds() As Guid = inkWord.GetPropertyDataIds()

        ' Snippets to demonstrate loading and saving
        Dim data As Byte() = inkWord.SavePropertiesData()
        If (Not inkWord.LoadPropertiesData(data)) Then
            MessageBox.Show("Cannot load property data")
        End If
    Case Microsoft.Ink.ContextNodeType.InkDrawing
        Dim drawingNode As InkDrawingNode = CType(selectedNode, InkDrawingNode)
        selectedResultsTextBox.Text = drawingNode.GetShapeName()
    Case Microsoft.Ink.ContextNodeType.InkBullet
        Dim bulletNode As InkBulletNode = CType(selectedNode, InkBulletNode)
        selectedResultsTextBox.Text = bulletNode.GetRecognizedString()
    Case Microsoft.Ink.ContextNodeType.Object
        Dim selectedObject As ObjectNode = selectedNode
        selectedResultsTextBox.Text = selectedObject.GetRecognizedString()
    Case Microsoft.Ink.ContextNodeType.CustomRecognizer
        Dim customRecognizer As CustomRecognizerNode = selectedNode
        selectedResultsTextBox.Text = customRecognizer.GetRecognizedString()
    Case Else
        selectedResultsTextBox.Text = String.Empty
End Select

                if (selectedNode.Type == Microsoft.Ink.ContextNodeType.WritingRegion)
                {
                    WritingRegionNode writingRegion = (WritingRegionNode)selectedNode;
                    selectedResultsTextBox.Text = writingRegion.GetRecognizedString();
                }
                else if (selectedNode.Type == Microsoft.Ink.ContextNodeType.Paragraph)
                {
                    ParagraphNode paragraph = (ParagraphNode)selectedNode;
                    selectedResultsTextBox.Text = paragraph.GetRecognizedString();
                }
                else if (selectedNode.Type == Microsoft.Ink.ContextNodeType.Line)
                {
                    LineNode line = (LineNode)selectedNode;
                    selectedResultsTextBox.Text = line.GetRecognizedString();
                }
                else if (selectedNode.Type == Microsoft.Ink.ContextNodeType.InkWord)
                {
                    InkWordNode inkWord = (InkWordNode)selectedNode;
                    ContextNode parentNode = inkWord.ParentNode;
                    if (parentNode is LineNode)
                    {
                        LineNode parentLine = (LineNode)parentNode;
                        // Put parent line's recognized string into the text box
                        selectedResultsTextBox.Text = parentLine.GetRecognizedString();

                        // Select the text that corresponds to the ink word
                        ContextNodeCollection subNodes = new ContextNodeCollection(theInkAnalyzer);
                        subNodes.Add(inkWord);
                        int start = 0;
                        int length = 0;
                        parentLine.GetTextRangeFromNodes(subNodes, out start, out length);
                        if (start >= 0 && length > 0)
                        {
                            selectedResultsTextBox.Select(start, length);
                        }
                    }
                }
                else if (selectedNode.Type == Microsoft.Ink.ContextNodeType.InkDrawing)
                {
                    InkDrawingNode drawingNode = (InkDrawingNode)selectedNode;
                    selectedResultsTextBox.Text = drawingNode.GetShapeName();
                }
                else if (selectedNode.Type == Microsoft.Ink.ContextNodeType.InkBullet)
                {
                    InkBulletNode bulletNode = (InkBulletNode)selectedNode;
                    selectedResultsTextBox.Text = bulletNode.GetRecognizedString();
                }
                else if (selectedNode.Type == Microsoft.Ink.ContextNodeType.CustomRecognizer)
                {
                    CustomRecognizerNode customRecognizer = (CustomRecognizerNode)selectedNode;
                    selectedResultsTextBox.Text = customRecognizer.GetRecognizedString();
                }
                else if (selectedNode.Type == Microsoft.Ink.ContextNodeType.Object)
                {
                    ObjectNode selectedObject = (ObjectNode)selectedNode;
                    selectedResultsTextBox.Text = selectedObject.GetRecognizedString();
                }
                else
                {
                    selectedResultsTextBox.Text = String.Empty;
                }

Gerarchia di ereditarietà

System.Object
Microsoft.Ink.ContextNodeType

Codice thread safe

Qualsiasi membro static (Shared in Visual Basic) pubblico di questo tipo è thread-safe. I membri di istanza non sono garantiti come thread-safe.

Piattaforme

Windows Vista

.NET Framework e .NET Compact Framework non supportano tutte le versioni di ciascuna piattaforma. Per un elenco delle versioni supportate, vedere Requisiti di sistema di .NET Framework.