RawStylusInput.StylusDeviceId 屬性

定義

命名空間:

System.Windows.Input.StylusPlugIns

組件:

PresentationCore.dll

取得目前手寫筆裝置的識別項。

public:
 property int StylusDeviceId { int get(); };

public int StylusDeviceId { get; }

member this.StylusDeviceId : int

Public ReadOnly Property StylusDeviceId As Integer

屬性值

Int32

目前 StylusDevice 的識別項。

範例

下列範例可確保收集的手寫筆點來自相同的 StylusDevice 。 這個範例是類別概觀中較大範例的 RawStylusInput 一部分。

// Collect the points as the user draws the stroke.
protected override void OnStylusDown(RawStylusInput rawStylusInput)
{
    // If points is not null, there is already a stroke taking place
    // on the digitizer, so don't create a new StylusPointsCollection.
    if (points == null)
    {
        points = new StylusPointCollection(rawStylusInput.GetStylusPoints().Description);
        points.Add(rawStylusInput.GetStylusPoints());
        currentStylus = rawStylusInput.StylusDeviceId;
    }
}

// Collect the points as the user draws the stroke.
protected override void OnStylusMove(RawStylusInput rawStylusInput)
{
    // Check whether the stylus that started the stroke is the same, and
    // that the element hasn't lost focus since the stroke began.
        if (points != null && currentStylus == rawStylusInput.StylusDeviceId)
    {
        points.Add(rawStylusInput.GetStylusPoints());
    }
}

// Collect the points as the user draws the stroke.
protected override void OnStylusUp(RawStylusInput rawStylusInput)
{
    // Check whether the stylus that started the stroke is the same, and
    // that the element hasn't lost focus since the stroke began.
    if (points != null && currentStylus == rawStylusInput.StylusDeviceId)
    {
        points.Add(rawStylusInput.GetStylusPoints());

        // Subscribe to the OnStylusUpProcessed method.
        rawStylusInput.NotifyWhenProcessed(points);
    }

    points = null;
    currentStylus = 0;
}

' Collect the points as the user draws the stroke.
Protected Overrides Sub OnStylusDown(ByVal rawStylusInput As RawStylusInput)

    ' If points is not null, there is already a stroke taking place
    ' on the digitizer, so don't create a new StylusPointsCollection.
    If points Is Nothing Then
        points = New StylusPointCollection(rawStylusInput.GetStylusPoints().Description)
        points.Add(rawStylusInput.GetStylusPoints())
        currentStylus = rawStylusInput.StylusDeviceId
    End If

End Sub

' Collect the points as the user draws the stroke.
Protected Overrides Sub OnStylusMove(ByVal rawStylusInput As RawStylusInput)

    ' Check whether the stylus that started the stroke is the same, and
    ' that the element hasn't lost focus since the stroke began.
    If Not (points Is Nothing) AndAlso currentStylus = rawStylusInput.StylusDeviceId Then
        points.Add(rawStylusInput.GetStylusPoints())
    End If

End Sub

' Collect the points as the user draws the stroke.
Protected Overrides Sub OnStylusUp(ByVal rawStylusInput As RawStylusInput)

    ' Check whether the stylus that started the stroke is the same, and
    ' that the element hasn't lost focus since the stroke began.
    If Not (points Is Nothing) AndAlso currentStylus = rawStylusInput.StylusDeviceId Then
        points.Add(rawStylusInput.GetStylusPoints())

        ' Subscribe to the OnStylusUpProcessed method.
        rawStylusInput.NotifyWhenProcessed(points)
    End If

    points = Nothing
    currentStylus = 0

End Sub