StylusPointDescription.HasProperty(StylusPointProperty) 方法

定義

命名空間:

System.Windows.Input

組件:

PresentationCore.dll

傳回值，這個值指出目前的 StylusPointDescription 是否具有指定的屬性。

public:
 bool HasProperty(System::Windows::Input::StylusPointProperty ^ stylusPointProperty);

public bool HasProperty (System.Windows.Input.StylusPointProperty stylusPointProperty);

member this.HasProperty : System.Windows.Input.StylusPointProperty -> bool

Public Function HasProperty (stylusPointProperty As StylusPointProperty) As Boolean

參數

stylusPointProperty

StylusPointProperty

要在 StylusPointProperty 中檢查的 StylusPointDescription。

傳回

Boolean

如果 StylusPointDescription 具有指定的 StylusPointProperty，則為 true，否則為 false。

範例

下列範例示範如何從 StylusPointDescription取得 屬性的相關信息。 此範例假設 StylusMove 事件已連線到事件處理程式。

void inkCanvas1_StylusMove(object sender, StylusEventArgs e)
{
    StylusPointCollection points = e.GetStylusPoints(inkCanvas1);
    StylusPointDescription description = points.Description;
    StringWriter normalPressureInfo = new StringWriter();

    if (description.HasProperty(StylusPointProperties.NormalPressure))
    {
        StylusPointPropertyInfo propertyInfo = 
            description.GetPropertyInfo(StylusPointProperties.NormalPressure);

        normalPressureInfo.WriteLine("  Guid = {0}", propertyInfo.Id.ToString());
        normalPressureInfo.Write("  Min = {0}", propertyInfo.Minimum.ToString());
        normalPressureInfo.Write("  Max = {0}", propertyInfo.Maximum.ToString());
        normalPressureInfo.Write("  Unit = {0}", propertyInfo.Unit.ToString());
        normalPressureInfo.WriteLine("  Res = {0}", propertyInfo.Resolution.ToString());
    }
}

Private Sub inkCanvas1_StylusMove(ByVal sender As Object, ByVal e As StylusEventArgs)
    Dim points As StylusPointCollection = e.GetStylusPoints(inkCanvas1)
    Dim description As StylusPointDescription = points.Description
    Dim normalPressureInfo As New StringWriter()

    If description.HasProperty(StylusPointProperties.NormalPressure) Then

        Dim propertyInfo As StylusPointPropertyInfo = _
            description.GetPropertyInfo(StylusPointProperties.NormalPressure)

        normalPressureInfo.WriteLine("  Guid = {0}", propertyInfo.Id.ToString())
        normalPressureInfo.Write("  Min = {0}", propertyInfo.Minimum.ToString())
        normalPressureInfo.Write("  Max = {0}", propertyInfo.Maximum.ToString())
        normalPressureInfo.Write("  Unit = {0}", propertyInfo.Unit.ToString())
        normalPressureInfo.WriteLine("  Res = {0}", propertyInfo.Resolution.ToString())
    End If

End Sub