StylusPointDescription Class

Specifies the properties that are in a StylusPoint.

Namespace: System.Windows.Input
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public class StylusPointDescription
public class StylusPointDescription
public class StylusPointDescription
<StylusPointDescription .../>

A StylusPointDescription specifies which properties are in a StylusPoint. For each property in a StylusPoint, the StylusPointDescription contains a StylusPointPropertyInfo object which specifies the constraints such as the minimum and maximum values of the property. Use the HasProperty and GetPropertyInfo methods to check for the properties in the StylusPointDescription.

All StylusPoint objects in a StylusPointCollection must share the same StylusPointDescription. If you try to add a StylusPoint to a StylusPointCollection that has a different StylusPointDescription, an exception will be thrown.

The following example gets the StylusPointDescription for a StylusPointCollection and gets the information for each StylusPointPropertyInfo in the StylusPointDescription.

    private void WriteDescriptionInfo(StylusPointCollection points)
    {
        StylusPointDescription pointsDescription = points.Description;
        ReadOnlyCollection<StylusPointPropertyInfo> properties = 
            pointsDescription.GetStylusPointProperties();

        StringWriter descriptionStringWriter = new StringWriter();
        descriptionStringWriter.Write("Property Count:{0}", pointsDescription.PropertyCount.ToString());
        
        foreach (StylusPointPropertyInfo property in properties)
        {
            // GetStylusPointPropertyName is defined below and returns the
            // name of the property.
            descriptionStringWriter.Write("name = {0}", GetStylusPointPropertyName(property).ToString());
            descriptionStringWriter.WriteLine("  Guid = {0}", property.Id.ToString());
            descriptionStringWriter.Write("  IsButton = {0}", property.IsButton.ToString());
            descriptionStringWriter.Write("  Min = {0}", property.Minimum.ToString());
            descriptionStringWriter.Write("  Max = {0}", property.Maximum.ToString());
            descriptionStringWriter.Write("  Unit = {0}", property.Unit.ToString());
            descriptionStringWriter.WriteLine("  Res {0}", property.Resolution.ToString());
        }

        descriptionOutput.Text = descriptionStringWriter.ToString();
    }

...

    // Use reflection to get the name of currentProperty.
    private string GetStylusPointPropertyName(StylusPointProperty currentProperty)
    {
        Guid guid = currentProperty.Id;

        // Iterate through the StylusPointProperties to find the StylusPointProperty
        // that matches currentProperty, then return the name.
        foreach (FieldInfo theFieldInfo
            in typeof(StylusPointProperties).GetFields())
        {
            StylusPointProperty property = (StylusPointProperty) theFieldInfo.GetValue(currentProperty);
            if (property.Id == guid)
            {
                return theFieldInfo.Name;
            }
        }
        return "Not found";
    }

System.Object
  System.Windows.Input.StylusPointDescription

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

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