WritingRegionNode - класс
Обновлен: Ноябрь 2007
Represents a group of paragraphs with similar orientation.
Пространство имен: System.Windows.Ink
Сборка: IAWinFX (в IAWinFX.dll)
Синтаксис
'Декларация
Public NotInheritable Class WritingRegionNode _
Inherits ContextNode
'Применение
Dim instance As WritingRegionNode
public sealed class WritingRegionNode : ContextNode
public ref class WritingRegionNode sealed : public ContextNode
public final class WritingRegionNode extends ContextNode
public final class WritingRegionNode extends ContextNode
Заметки
A writing region has a single reading order, such as top down.
Several writing regions can coexist in the same document on the same page if they have different orientations. For example, if a user writes notes that are primarily horizontal but then scribbles a few words diagonally in a corner, the diagonal words are considered to have a different orientation. A new WritingRegion is created for that diagonal text.
A WritingRegionNode object can contain any number of the following types of child elements:
ParagraphNode objects.
Nodes with an unknown Guid value.
Примеры
The following example uses the WritingRegionNode method to mark strokes that correspond to selected text. The example code assumes that the Text property of the TextBox named theResultsTextBox, is set to the value returned by the GetRecognizedString method. The example also assumes that the user has selected some text from theResultsTextBox and that there is an InkAnalyzer named theInkAnalyzer.
' Find out what's been selected in the text box
Dim selectionStart As Integer = selectedResultsTextBox.SelectionStart
Dim selectionLength As Integer = selectedResultsTextBox.SelectionLength
' Return if no text is selected.
If selectionLength = 0 Then
Return
End If
' Get the nodes that correspond to that range
Dim selectedRegionSubNodes As ContextNodeCollection = writingRegion.GetNodesFromTextRange(selectionStart, selectionLength)
' Use the new start and length value to update the
' selection in the TextBox
selectedResultsTextBox.SelectionStart = selectionStart
selectedResultsTextBox.SelectionLength = selectionLength
' First, set all strokes to black
For Each stroke As Stroke In writingRegion.Strokes
stroke.DrawingAttributes.Color = Colors.Black
Next stroke
' Next, set all selected sub nodes to red
For Each node As ContextNode In selectedRegionSubNodes
For Each stroke As Stroke In node.Strokes
stroke.DrawingAttributes.Color = Colors.Red
Next stroke
Next node
// Find out what's been selected in the text box
int selectionStart = selectedResultsTextBox.SelectionStart;
int selectionLength = selectedResultsTextBox.SelectionLength;
// Return if no text is selected.
if (selectionLength == 0)
return;
// Get the nodes that correspond to that range
ContextNodeCollection selectedRegionSubNodes =
writingRegion.GetNodesFromTextRange(ref selectionStart, ref selectionLength);
// Use the new start and length value to update the
// selection in the TextBox
selectedResultsTextBox.SelectionStart = selectionStart;
selectedResultsTextBox.SelectionLength = selectionLength;
// First, set all strokes to black
foreach (Stroke stroke in writingRegion.Strokes)
stroke.DrawingAttributes.Color = Colors.Black;
// Next, set all selected sub nodes to red
foreach (ContextNode node in selectedRegionSubNodes)
{
foreach (Stroke stroke in node.Strokes)
{
stroke.DrawingAttributes.Color = Colors.Red;
}
}
Иерархия наследования
System.Object
System.Windows.Ink.ContextNode
System.Windows.Ink.WritingRegionNode
Потокобезопасность
Любые открытые члены этого типа, объявленные как static (Shared в Visual Basic), являются потокобезопасными. Потокобезопасность членов экземпляров не гарантируется.
Платформы
Windows Vista
Среды .NET Framework и .NET Compact Framework поддерживают не все версии каждой платформы. Поддерживаемые версии перечислены в разделе Требования к системе для .NET Framework.
Сведения о версии
.NET Framework
Поддерживается в версии: 3.0