StylusPoint.PressureFactor Eigenschaft

public:
 property float PressureFactor { float get(); void set(float value); };

public float PressureFactor { get; set; }

member this.PressureFactor : single with get, set

Public Property PressureFactor As Single

Eigenschaftswert

Ein Wert zwischen 0 und 1, der den Druck angibt, den der Tablettstift bei Erstellung des StylusPoint auf die Oberfläche des Digitizers anwendet.

Ausnahmen

Beispiele

Im folgenden Beispiel wird die PressureFactor -Eigenschaft verwendet, um den Druckwert für jedes StylusPoint in einem StylusPointCollection namens pointsabzurufen und anzuzeigen. In diesem Beispiel wird davon ausgegangen, dass es einen TextBlock namens packetOutputgibt.

private void WriteStylusPointValues(StylusPointCollection points)
{
    StylusPointDescription pointsDescription = points.Description;

    ReadOnlyCollection<StylusPointPropertyInfo> properties = 
        pointsDescription.GetStylusPointProperties();
    
    // Write the name and value of each property in
    // every stylus point.
    StringWriter packetWriter = new StringWriter();
    packetWriter.WriteLine("{0} stylus points", points.Count.ToString());
    foreach (StylusPoint stylusPoint in points)
    {
        packetWriter.WriteLine("Stylus Point info");
        packetWriter.WriteLine("X: {0}", stylusPoint.X.ToString());
        packetWriter.WriteLine("Y: {0}", stylusPoint.Y.ToString());
        packetWriter.WriteLine("Pressure: {0}", stylusPoint.PressureFactor.ToString());

        // Get the property name and value for each StylusPoint.
        // Note that this loop reports the X, Y, and pressure values differantly than 
        // getting their values above.
        for (int i = 0; i < pointsDescription.PropertyCount; ++i)
        {
            StylusPointProperty currentProperty = properties[i];

            // GetStylusPointPropertyName is defined below and returns the
            // name of the property.
            packetWriter.Write("{0}: ", GetStylusPointPropertyName(currentProperty));
            packetWriter.WriteLine(stylusPoint.GetPropertyValue(currentProperty).ToString());
        }
        packetWriter.WriteLine();
    }

    packetOutput.Text = packetWriter.ToString();
}

Private Sub WriteStylusPointValues(ByVal points As StylusPointCollection) 
    Dim pointsDescription As StylusPointDescription = points.Description
    
    Dim properties As ReadOnlyCollection(Of StylusPointPropertyInfo) = _
                            pointsDescription.GetStylusPointProperties()
    
    ' Write the name and value of each property in
    ' every stylus point.
    Dim packetWriter As New StringWriter()

    packetWriter.WriteLine("{0} stylus points", points.Count.ToString())

    For Each stylusPoint As StylusPoint In points

        packetWriter.WriteLine("Stylus Point info")
        packetWriter.WriteLine("X: {0}", stylusPoint.X.ToString())
        packetWriter.WriteLine("Y: {0}", stylusPoint.Y.ToString())
        packetWriter.WriteLine("Pressure: {0}", stylusPoint.PressureFactor.ToString())

        ' Get the property name and value for each StylusPoint.
        ' Note that this loop reports the X, Y, and pressure values differantly than 
        ' getting their values above.
        For i As Integer = 0 To pointsDescription.PropertyCount - 1

            Dim currentProperty As StylusPointProperty = properties(i)

            ' GetStylusPointPropertyName is defined below and returns the
            ' name of the property.
            packetWriter.Write("{0}: ", GetStylusPointPropertyName(currentProperty))
            packetWriter.WriteLine(stylusPoint.GetPropertyValue(currentProperty).ToString())
        Next i

        packetWriter.WriteLine()

    Next stylusPoint

    packetOutput.Text = packetWriter.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

Hinweise

Der Wert der PressureFactor -Eigenschaft wird als Wert zwischen 0 und 1 ausgedrückt. Der Wert 0 gibt an, dass kein Druck angewendet wird, während der Wert 1 angibt, dass die maximale Druckmenge angewendet wird. Der Wert 0,5 gibt an, dass 50 % des maximalen Drucks angewendet werden usw.

Gilt für: