StylusPointPropertyInfo Classe

Definição

Namespace:

System.Windows.Input

Assembly:

PresentationCore.dll

Especifica as restrições de uma propriedade em um StylusPoint.

public ref class StylusPointPropertyInfo : System::Windows::Input::StylusPointProperty

public class StylusPointPropertyInfo : System.Windows.Input.StylusPointProperty

type StylusPointPropertyInfo = class
    inherit StylusPointProperty

Public Class StylusPointPropertyInfo
Inherits StylusPointProperty

Herança

Object

StylusPointProperty

StylusPointPropertyInfo

Exemplos

O exemplo a seguir cria um StylusPointDescription objeto de um StylusPointCollection e obtém as informações de cada StylusPointPropertyInfo um no 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

Comentários

A StylusPointPropertyInfo classe herda da StylusPointProperty classe e gera os Minimumvalores , Maximum, Resolutione Unit usados para definir as propriedades de um StylusPoint. A validade de cada valor de propriedade varia dependendo da fabricação do digitalizador e da caneta.

Construtores

StylusPointPropertyInfo(StylusPointProperty)	Inicializa uma nova instância da classe StylusPointPropertyInfo.
StylusPointPropertyInfo(StylusPointProperty, Int32, Int32, StylusPointPropertyUnit, Single)	Inicializa uma nova instância da classe StylusPointPropertyInfo usando os valores especificados.

Propriedades

Id	Obtém o GUID para o StylusPointProperty atual. (Herdado de StylusPointProperty)
IsButton	Obtém se StylusPointProperty representa um botão na caneta. (Herdado de StylusPointProperty)
Maximum	Obtém o valor máximo aceito para a propriedade StylusPoint.
Minimum	Obtém o valor mínimo aceito para a propriedade StylusPoint.
Resolution	Obtém a escala que converte um valor da propriedade StylusPoint em suas unidades.
Unit	Obtém o tipo de medida usado pela propriedade StylusPoint.

Métodos

Equals(Object)	Determina se o objeto especificado é igual ao objeto atual. (Herdado de Object)
GetHashCode()	Serve como a função de hash padrão. (Herdado de Object)
GetType()	Obtém o Type da instância atual. (Herdado de Object)
MemberwiseClone()	Cria uma cópia superficial do Object atual. (Herdado de Object)
ToString()	Retorna uma cadeia de caracteres que representa o objeto atual. (Herdado de StylusPointProperty)