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InkRecognizerBase Class

Provides access to handwriting recognizers for use with ink analysis.

Namespace: System.Windows.Ink.AnalysisCore
Assembly: IACore (in iacore.dll)

public class InkRecognizerBase : IDisposable
public class InkRecognizerBase implements IDisposable
public class InkRecognizerBase implements IDisposable
Not applicable.

A recognizer has specific attributes and properties that allow it to perform recognition. The properties of a recognizer must be determined before recognition can occur. The types of properties that a recognizer supports determine the types of recognition that it can perform. For instance, if a recognizer does not support cursive handwriting, it returns inaccurate results when a user writes in cursive.

A recognizer also has built-in functionality that automatically manages many aspects of handwriting. For instance, it determines the metrics for the lines on which strokes are drawn. You can return the line number of a stroke, but you never need to specify how those line metrics are determined because of the built-in functionality of the recognizer.

The InkAnalyzerBase maintains a InkRecognizerBaseCollection of available recognizers. To access this collection, use the GetInkRecognizersByPriority method of the InkAnalyzerBase.

The following example defines a method that returns a string containing information about a specified InkRecognizerBase. Not shown in this example are the helper methods ListCapabilities and GetPropertyName, which use reflection to return information about specific capabilities and properties of the InkRecognizerBase.

/// <summary>
/// Generates a string containing information about the specified InkRecognizer.
/// </summary>
/// <param name="theInkRecognizer">
/// The InkRecognizer from which to gather the information.
/// </param>
/// <returns>
/// A string containing information about the specified InkRecognizer.
/// </returns>
private string GetInkRecognizerData(
    System.Windows.Ink.AnalysisCore.InkRecognizerBase theInkRecognizer)
    // Create a StringBuilder in which to collect the information.
    System.Text.StringBuilder result = new System.Text.StringBuilder();

    // Add the name of the recognizer.
        "Name: {0}", theInkRecognizer.Name));

    // Add the GUID of the recognizer.
        "   Guid: {0}", theInkRecognizer.Guid));

    // Add the vendor of the recognizer.
        "   Vendor: {0}", theInkRecognizer.Vendor));

    // Add the languages the recognizer supports.
    result.AppendLine("   Supports the following languages:");
    if (0 == theInkRecognizer.GetLanguages().Length)
        result.AppendLine("      No languages supported.");
        foreach (int lcid in theInkRecognizer.GetLanguages())
            System.Globalization.CultureInfo theCultureInfo =
                new System.Globalization.CultureInfo(lcid);
                "      0x{0:x4}: {1}", lcid, theCultureInfo.EnglishName));

    // Add the capabilities of the recognizer.
        "   Capabilities: 0x{0:x}", theInkRecognizer.Capabilities));

    // List each capability separately, using a helper method.

    // Add the properties the recognizer supports.
    result.AppendLine("   Supports the following properties:");
    if (0 == theInkRecognizer.GetSupportedProperties().Length)
        result.AppendLine("      No properties supported.");
        foreach (System.Guid theGuid in theInkRecognizer.GetSupportedProperties())
            // Use the helper method to get the name of the property.
            result.AppendLine("      " + this.GetPropertyName(theGuid));

    return result.ToString();


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 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.

.NET Framework

Supported in: 3.0