StylusPointPropertyInfo Class

Definition

Namespace:

System.Windows.Input

Assembly:

PresentationCore.dll

Specifies the constraints of a property in a StylusPoint.

C#

public class StylusPointPropertyInfo : System.Windows.Input.StylusPointProperty

Inheritance

Object

StylusPointProperty

StylusPointPropertyInfo

Examples

The following example creates an StylusPointDescription object from a StylusPointCollection and gets the information for each StylusPointPropertyInfo in the StylusPointDescription.

C#

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();
}

C#

// 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";
}

Remarks

The StylusPointPropertyInfo class inherits from the StylusPointProperty class and generates the Minimum, Maximum, Resolution, and Unit values used to define the properties of a StylusPoint. The validity of each property value varies depending on the manufacture of the digitizer and stylus.

Constructors

StylusPointPropertyInfo(StylusPointProperty, Int32, Int32, StylusPointPropertyUnit, Single)	Initializes a new instance of the StylusPointPropertyInfo class using the specified values.
StylusPointPropertyInfo(StylusPointProperty)	Initializes a new instance of the StylusPointPropertyInfo class.

Properties

Id	Gets the GUID for the current StylusPointProperty. (Inherited from StylusPointProperty)
IsButton	Gets whether the StylusPointProperty represents a button on the stylus. (Inherited from StylusPointProperty)
Maximum	Gets the maximum value accepted for the StylusPoint property.
Minimum	Gets the minimum value accepted for the StylusPoint property.
Resolution	Gets the scale that converts a StylusPoint property value into units.
Unit	Gets the type of measurement that is used by StylusPoint property.

Methods

ToString()

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

Applies to