WritingRegionNode Class
Assembly: IAWinFX (in iawinfx.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
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:
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ParagraphNode objects.
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Nodes with an unknown Guid value.
The following example uses the WritingRegionNode method to mark the strokes that corresponds to selected text. The example code assumes that the Text property of the TextBox, theResultsTextBox, is set to the value returned by the GetRecognizedString method and that the user has selected some text in theResultsTextBox. This example also assumes that there is an InkAnalyzer called, 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
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.