WritingRegionNode Class
Represents a group of paragraphs with similar orientation.
Assembly: IAWinFX (in IAWinFX.dll)
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.
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
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.