ContextNodeTypeBase Class

Článek
10/20/2012

Defines values that specify the type of ContextNode object.

Namespace: System.Windows.Ink.AnalysisCore
Assembly: IACore (in IACore.dll)

Syntax

'Declaration
Public NotInheritable Class ContextNodeTypeBase
'Usage
Dim instance As ContextNodeTypeBase

public sealed class ContextNodeTypeBase

public ref class ContextNodeTypeBase sealed

public final class ContextNodeTypeBase

Remarks

The ContextNodeBase.Type property and the InkAnalyzerBase.FindNodesOfType method frequently use the fields of this class.

Examples

This example sets the Text property of a TextBox, selectedResultsTextBox, to show an appropriate string for a ContextNodeBase, selectedNode. It uses the Type property to choose the kind of text to show, depending on the type of the ContextNodeBase.

If (selectedNode.ContainsPropertyData(PropertyGuidsForContextNodesBase.RecognizedString) AndAlso _
   (selectedNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.WritingRegion OrElse _
    selectedNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Paragraph OrElse _
    selectedNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.CustomRecognizer OrElse _
    selectedNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Object OrElse _
    selectedNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Line)) Then

    selectedResultsTextBox.Text = _
        CType(selectedNode.GetPropertyData(PropertyGuidsForContextNodesBase.RecognizedString), String)

ElseIf (selectedNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.InkWord) Then 
    Dim parentNode As ContextNodeBase = selectedNode.ParentNode
    If (parentNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Line AndAlso _
            parentNode.ContainsPropertyData(PropertyGuidsForContextNodesBase.RecognizedString)) Then 

        ' Put parent line's recognized string into the text box
        selectedResultsTextBox.Text = _
            CType(parentNode.GetPropertyData(PropertyGuidsForContextNodesBase.RecognizedString), String)

        ' Select the text that corresponds to the ink word 
        Dim subNodes As New ContextNodeBaseCollection(theInkAnalyzerBase)
        subNodes.Add(selectedNode)
        Dim start As Integer 
        Dim length As Integer
        theInkAnalyzerBase.GetTextRangeFromNodes(subNodes, start, length)
        If (start >= 0 AndAlso length > 0) Then
            selectedResultsTextBox.Select(start, length)
        End If 
    End If 
ElseIf (selectedNode.Type = System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.InkDrawing AndAlso _
        selectedNode.ContainsPropertyData(PropertyGuidsForContextNodesBase.ShapeName)) Then

    selectedResultsTextBox.Text = _
        CType(selectedNode.GetPropertyData(PropertyGuidsForContextNodesBase.ShapeName), String)

End If

if (selectedNode.ContainsPropertyData(PropertyGuidsForContextNodesBase.RecognizedString) &&
   (selectedNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.WritingRegion ||
    selectedNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Paragraph ||
    selectedNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.CustomRecognizer ||
    selectedNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Object ||
    selectedNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Line))
{
    selectedResultsTextBox.Text =
        (string)selectedNode.GetPropertyData(PropertyGuidsForContextNodesBase.RecognizedString);
}
else if (selectedNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.InkWord)
{
    ContextNodeBase parentNode = selectedNode.ParentNode;
    if (parentNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Line &&
        parentNode.ContainsPropertyData(PropertyGuidsForContextNodesBase.RecognizedString))
    {
        // Put parent line's recognized string into the text box
        selectedResultsTextBox.Text =
            (string)parentNode.GetPropertyData(PropertyGuidsForContextNodesBase.RecognizedString);

        // Select the text that corresponds to the ink word
        ContextNodeBaseCollection subNodes = new ContextNodeBaseCollection(theInkAnalyzerBase);
        subNodes.Add(selectedNode);
        int start;
        int length;
        theInkAnalyzerBase.GetTextRangeFromNodes(subNodes, out start, out length);
        if (start >= 0 && length > 0)
        {
            selectedResultsTextBox.Select(start, length);
        }
    }
}
else if (selectedNode.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.InkDrawing &&
         selectedNode.ContainsPropertyData(PropertyGuidsForContextNodesBase.ShapeName))
{
    selectedResultsTextBox.Text =
        (string)selectedNode.GetPropertyData(PropertyGuidsForContextNodesBase.ShapeName);

}

Inheritance Hierarchy

System.Object
System.Windows.Ink.AnalysisCore.ContextNodeTypeBase

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

Sdílet prostřednictvím