InkCollectorStrokeEventArgs.Stroke, propriété

Article
11/05/2008

Mise à jour : November 2007

Obtient l'objet Stroke collecté qui a généré l'événement Stroke.

Espace de noms : Microsoft.Ink
Assembly : Microsoft.Ink (dans Microsoft.Ink.dll)

Syntaxe

'Déclaration
Public ReadOnly Property Stroke As Stroke
'Utilisation
Dim instance As InkCollectorStrokeEventArgs
Dim value As Stroke

value = instance.Stroke

public Stroke Stroke { get; }

public:
property Stroke^ Stroke {
    Stroke^ get ();
}

/** @property */
public Stroke get_Stroke()

public function get Stroke () : Stroke

Valeur de propriété

Type : Microsoft.Ink.Stroke
Objet collecté qui a généré l'événement Stroke.

Exemples

Cet exemple montre comment s'abonner à l'événement CursorDown et à l'événement Stroke pour calculer le temps nécessaire à l'utilisateur pour créer un trait.

Au départ d'un trait, l'événement CursorDown se déclenche. L'heure actuelle est placée dans la collection ExtendedProperties de l'objet Stroke.

Private Sub mInkObject_CursorDown(ByVal sender As Object, ByVal e As InkCollectorCursorDownEventArgs)
    ' add extended property indicating the time the stroke started
    ' STROKE_START_GUID is class level string via GUID generator
    e.Stroke.ExtendedProperties.Add(New Guid(STROKE_START_GUID), DateTime.Now)
End Sub

private void mInkObject_CursorDown(object sender, InkCollectorCursorDownEventArgs e)
{
    // add extended property indicating the time the stroke started
    // STROKE_START_GUID is class level string via GUID generator
    e.Stroke.ExtendedProperties.Add(new Guid(STROKE_START_GUID), DateTime.Now);
}

Lorsque le trait est terminé, l'événement Stroke se déclenche. L'heure de début est récupérée à partir de la collection ExtendedProperties de l'objet Stroke et utilisée pour calculer le temps écoulé.

Private Sub mInkObject_Stroke1(ByVal sender As Object, ByVal e As InkCollectorStrokeEventArgs)
    ' check to see if extended property for start time exists
    ' Attempting to access an extended property that hasn't been created throws an exception
    ' STROKE_START_GUID is class level string via GUID generator
    If (e.Stroke.ExtendedProperties.DoesPropertyExist(New Guid(STROKE_START_GUID))) Then

        Dim startTime As DateTime = DirectCast(e.Stroke.ExtendedProperties(New Guid(STROKE_START_GUID)).Data, DateTime)
        Dim endTime As DateTime = DateTime.Now
        Dim span As TimeSpan = New TimeSpan(endTime.Ticks - startTime.Ticks)

        ' add extended property indicating the time the stroke ended
        ' STROKE_END_GUID is class level string via GUID generator
        e.Stroke.ExtendedProperties.Add(New Guid(STROKE_END_GUID), endTime)

        ' display the number of seconds in creating this stroke
        Me.statusLabelStrokeTime.Text = span.TotalSeconds.ToString()
    End If
End Sub

private void mInkObject_Stroke1(object sender, InkCollectorStrokeEventArgs e)
{
    // check to see if extended property for start time exists
    // Attempting to access an extended property that hasn't been created throws an exception
    // STROKE_START_GUID is class level string via GUID generator
    if (e.Stroke.ExtendedProperties.DoesPropertyExist(new Guid(STROKE_START_GUID)))
    {
        DateTime startTime = (DateTime)e.Stroke.ExtendedProperties[new Guid(STROKE_START_GUID)].Data;
        DateTime endTime = DateTime.Now;
        TimeSpan span = new TimeSpan(endTime.Ticks - startTime.Ticks);

        // add extended property indicating the time the stroke ended
        // STROKE_END_GUID is class level string via GUID generator
        e.Stroke.ExtendedProperties.Add(new Guid(STROKE_END_GUID), endTime);

        // display the number of seconds in creating this stroke
        this.statusLabelStrokeTime.Text = span.TotalSeconds.ToString();
    }
}

Plateformes

Windows Vista

Le .NET Framework et le .NET Compact Framework ne prennent pas en charge toutes les versions de chaque plateforme. Pour obtenir la liste des versions prises en charge, consultez Configuration requise du .NET Framework.