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WritingRegionNode Class

Represents a group of paragraphs with similar orientation.

Namespace:  System.Windows.Ink
Assembly:  IAWinFX (in IAWinFX.dll)

public sealed class WritingRegionNode : ContextNode

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:

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 
int selectionStart = selectedResultsTextBox.SelectionStart;
int selectionLength = selectedResultsTextBox.SelectionLength;

// Return if no text is selected. 
if (selectionLength == 0)

// 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;


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 3.0