Proprietà InkEditStrokeEventArgs.Stroke

Articolo
10/29/2008

Aggiornamento: novembre 2007

Ottiene l'oggetto Stroke che ha generato l'evento Stroke.

Spazio dei nomi: Microsoft.Ink
Assembly: Microsoft.Ink (in Microsoft.Ink.dll)

Sintassi

'Dichiarazione
Public ReadOnly Property Stroke As Stroke
'Utilizzo
Dim instance As InkEditStrokeEventArgs
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

Valore proprietà

Tipo: Microsoft.Ink.Stroke
Oggetto Stroke che ha generato l'evento Stroke.

Esempi

In questo esempio viene illustrato come sottoscrivere l'evento Gesture e l'evento Stroke per aumentare la funzionalità di un oggetto ApplicationGesture.

Quando viene generato l'evento Gesture, vengono esaminati il movimento e lo stato corrente del controllo InkEdit. Se necessario, il comportamento del movimento viene modificato e l'evento viene annullato.

Private Sub mInkEdit_Gesture(ByVal sender As Object, ByVal e As InkEditGestureEventArgs)
    ' There might be more than one gesture passed in InkEditGestureEventArgs
    ' The gestures are arranged in order of confidence from most to least
    ' This event handler is only concerned with the first (most confident) gesture
    ' and only if the gesture is ApplicationGesture.Left with strong confidence
    Dim G As Gesture = e.Gestures(0)
    If (ApplicationGesture.Left = G.Id And RecognitionConfidence.Strong = G.Confidence) Then
        Dim pInkEdit As InkEdit = DirectCast(sender, InkEdit)
        ' by default, ApplicationGesture.Left maps to Backspace
        ' If the insertion point is at the beginning of the text
        ' and there is no text selected, then Backspace does not do anything.
        ' In this case, we will alter the gesture to map to Delete instead
        If (0 = pInkEdit.SelectionStart And 0 = pInkEdit.SelectionLength And pInkEdit.Text.Length > 0) Then
            ' take out the first character of the string
            pInkEdit.Text = pInkEdit.Text.Remove(0, 1)
            ' save the stroke ID in a class level var for use in the Stroke event
            Me.mStrokeID = e.Strokes(0).Id
            ' cancel the gesture so it won't perform the default action
            e.Cancel = True
        End If
    End If
End Sub

private void mInkEdit_Gesture(object sender, InkEditGestureEventArgs e)
{
    // There might be more than one gesture passed in InkEditGestureEventArgs
    // The gestures are arranged in order of confidence from most to least
    // This event handler is only concerned with the first (most confident) gesture
    // and only if the gesture is ApplicationGesture.Left with strong confidence
    Gesture G = e.Gestures[0];
    if (ApplicationGesture.Left == G.Id &&  RecognitionConfidence.Strong == G.Confidence)
    {
        InkEdit pInkEdit = (InkEdit)sender;

        // by default, ApplicationGesture.Left maps to Backspace
        // If the insertion point is at the beginning of the text
        // and there is no text selected, then Backspace does not do anything.
        // In this case, we will alter the gesture to map to Delete instead
        if (0 == pInkEdit.SelectionStart && 0 == pInkEdit.SelectionLength && pInkEdit.Text.Length > 0)
        {
            // take out the first character of the string
            pInkEdit.Text = pInkEdit.Text.Remove(0, 1);
            // save the stroke ID in a class level var for use in the Stroke event
            this.mStrokeID = e.Strokes[0].Id;
            // cancel the gesture so it won't perform the default action
            e.Cancel = true;
        }
    }
}

Quando viene generato l'evento Stroke, l'evento viene annullato se il tratto è quello utilizzato per generare il movimento il cui comportamento è stato modificato nell'evento Gesture. Impedisce l'esecuzione del rendering del tratto.

Private Sub mInkEdit_Stroke(ByVal sender As Object, ByVal e As InkEditStrokeEventArgs)
    e.Cancel = (e.Stroke.Id = Me.mStrokeID)
End Sub

private void mInkEdit_Stroke(object sender, InkEditStrokeEventArgs e)
{
    e.Cancel = (e.Stroke.Id == this.mStrokeID);
}

Piattaforme

Windows Vista

.NET Framework e .NET Compact Framework non supportano tutte le versioni di ciascuna piattaforma. Per un elenco delle versioni supportate, vedere Requisiti di sistema di .NET Framework.