StylusPointDescription Třída

Definice

Obor názvů:

System.Windows.Input

Sestavení:

PresentationCore.dll

Určuje vlastnosti, které jsou v objektu StylusPoint.

public ref class StylusPointDescription

public class StylusPointDescription

type StylusPointDescription = class

Public Class StylusPointDescription

Dědičnost

Object

StylusPointDescription

Příklady

Následující příklad získá StylusPointDescription for a StylusPointCollection získá informace pro každý StylusPointPropertyInfo v souboru 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();
}

Private Sub WriteDescriptionInfo(ByVal points As StylusPointCollection) 

    Dim pointsDescription As StylusPointDescription = points.Description

    Dim properties As ReadOnlyCollection(Of StylusPointPropertyInfo) = _
        pointsDescription.GetStylusPointProperties()

    Dim descriptionStringWriter As New StringWriter
    descriptionStringWriter.Write("Property Count:{0}", pointsDescription.PropertyCount.ToString())
    
    Dim pointProperty As StylusPointPropertyInfo
    For Each pointProperty In properties

        ' GetStylusPointPropertyName is defined below and returns the
        ' name of the property.
        descriptionStringWriter.Write("name = {0}", GetStylusPointPropertyName(pointProperty).ToString())
        descriptionStringWriter.WriteLine("  Guid = {0}", pointProperty.Id.ToString())
        descriptionStringWriter.Write("  IsButton = {0}", pointProperty.IsButton.ToString())
        descriptionStringWriter.Write("  Min = {0}", pointProperty.Minimum.ToString())
        descriptionStringWriter.Write("  Max = {0}", pointProperty.Maximum.ToString())
        descriptionStringWriter.Write("  Unit = {0}", pointProperty.Unit.ToString())
        descriptionStringWriter.WriteLine("  Res {0}", pointProperty.Resolution.ToString())

    Next pointProperty

    descriptionOutput.Text = descriptionStringWriter.ToString()

End Sub

// 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";
}

' Use reflection to get the name of currentProperty.
Private Function GetStylusPointPropertyName(ByVal currentProperty As StylusPointProperty) As String 
    Dim guid As Guid = currentProperty.Id
    
    ' Iterate through the StylusPointProperties to find the StylusPointProperty
    ' that matches currentProperty, then return the name.
    Dim theFieldInfo As FieldInfo

    For Each theFieldInfo In GetType(StylusPointProperties).GetFields()

        Dim pointProperty As StylusPointProperty = _
            CType(theFieldInfo.GetValue(currentProperty), StylusPointProperty)

        If pointProperty.Id = guid Then
            Return theFieldInfo.Name
        End If

    Next theFieldInfo

    Return "Not found"

End Function 'GetStylusPointPropertyName

Poznámky

Určuje StylusPointDescription , které vlastnosti jsou přidruženy k objektu StylusPoint. Pro každou vlastnost v objektu StylusPointStylusPointDescription obsahuje StylusPointPropertyInfo objekt, který určuje omezení, jako jsou minimální a maximální hodnoty vlastnosti. HasProperty Pomocí a GetPropertyInfo metod zkontrolujte tyto vlastnosti v objektu StylusPointDescription.

Všechny StylusPoint objekty v objektu StylusPointCollection musí sdílet stejné StylusPointDescription. Pokud se pokusíte přidat do StylusPoint jiného objektu StylusPointCollectionStylusPointDescription, vyvolá se výjimka.

Konstruktory

Name	Description
StylusPointDescription()	Inicializuje novou instanci StylusPointDescription třídy.
StylusPointDescription(IEnumerable<StylusPointPropertyInfo>)	Inicializuje novou instanci StylusPointDescription třídy se zadanými StylusPointPropertyInfo objekty.

Vlastnosti

Name	Description
PropertyCount	Získá počet vlastností v objektu StylusPointDescription.

Metody

Name	Description
AreCompatible(StylusPointDescription, StylusPointDescription)	Vrátí hodnotu, která určuje, zda jsou zadané StylusPointDescription objekty identické.
GetCommonDescription(StylusPointDescription, StylusPointDescription)	Vrátí průnik zadaných StylusPointDescription objektů.
GetPropertyInfo(StylusPointProperty)	Získá pro zadanou StylusPointPropertyInfo vlastnost.
GetStylusPointProperties()	Získá všechny vlastnosti StylusPointDescription.
HasProperty(StylusPointProperty)	Vrátí hodnotu, která určuje, zda aktuální StylusPointDescription má zadanou vlastnost.
IsSubsetOf(StylusPointDescription)	Vrátí hodnotu, která určuje, zda StylusPointDescription aktuální je podmnožinou zadaného StylusPointDescription.