ContextNodeType 类
定义用于指定 ContextNode 对象的类型的值。
命名空间： Microsoft.Ink
程序集： Microsoft.Ink.Analysis（在 Microsoft.Ink.Analysis.dll 中）
语法
声明
Public NotInheritable Class ContextNodeType
用法
Dim instance As ContextNodeType
public sealed class ContextNodeType
public ref class ContextNodeType sealed
public final class ContextNodeType
public final class ContextNodeType
备注
ContextNode.Type 属性和 InkAnalyzer.FindNodesOfType 方法经常使用此类的字段。
示例
此示例设置 TextBox 对象 selectedResultsTextBox 的 Text 属性，以显示 ContextNode 对象 selectedNode 的合适字符串。它使用 Type 属性来选择要显示的文本种类，具体取决于 ContextNode 的类型。
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;
}
继承层次结构
System.Object
Microsoft.Ink.ContextNodeType
线程安全
此类型的任何公共 static（在 Visual Basic 中为 Shared） 成员都是线程安全的。但不保证所有实例成员都是线程安全的。
平台
Windows Vista
.NET Framework 和 .NET Compact Framework 并不是对每个平台的所有版本都提供支持。有关支持的版本的列表，请参见.NET Framework 系统要求。
版本信息
.NET Framework
受以下版本支持：3.0