StylusPointDescription Class
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StylusPointDescription Class


Specifies the properties that are in a StylusPoint.

Namespace:   System.Windows.Input
Assembly:  PresentationCore (in PresentationCore.dll)


public class StylusPointDescription


Initializes a new instance of the StylusPointDescription class.


Initializes a new instance of the StylusPointDescription class with the specified StylusPointPropertyInfo objects.


Gets the number of properties in the StylusPointDescription.

System_CAPS_pubmethodSystem_CAPS_staticAreCompatible(StylusPointDescription, StylusPointDescription)

Returns a value that indicates whether the specified StylusPointDescription objects are identical.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodSystem_CAPS_staticGetCommonDescription(StylusPointDescription, StylusPointDescription)

Returns the intersection of the specified StylusPointDescription objects.


Serves as the default hash function. (Inherited from Object.)


Gets the StylusPointPropertyInfo for the specified property.


Gets all the properties of the StylusPointDescription.


Gets the Type of the current instance.(Inherited from Object.)


Returns a value that indicates whether the current StylusPointDescription has the specified property.


Returns a value that indicates whether the current StylusPointDescription is a subset of the specified StylusPointDescription.


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

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

    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";

.NET Framework
Available since 3.0

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

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