private void OnStrokeErasing(InkCanvasStrokeErasingEventArgs e)
{
InkCanvasStrokeErasingEventHandler handler = StrokeErasing;
if (handler != null)
{
handler(this, e);
}
}
private void EraseStroke(Contact contact)
{
Point position = contact.GetPosition(this);
foreach (Stroke stroke in inkCanvas.Strokes.HitTest(new[] { position }, EraserShape))
{
InkCanvasStrokeErasingEventArgs e = new InkCanvasStrokeErasingEventArgs(stroke);
OnStrokeErasing(e);
if (!e.Cancel)
{
inkCanvas.Strokes.Remove(stroke);
RoutedEventArgs e2 = new RoutedEventArgs(StrokeErasedEvent, this);
RaiseEvent(e2);
}
}
}
private void ErasePoint(Contact contact)
{
Point position = contact.GetPosition(this);
Point[] points = new[] { position };
foreach (Stroke stroke in inkCanvas.Strokes.HitTest(points, EraserShape))
{
InkCanvasStrokeErasingEventArgs e = new InkCanvasStrokeErasingEventArgs(stroke);
OnStrokeErasing(e);
if (!e.Cancel)
{
StrokeCollection eraseResult = stroke.GetEraseResult(points, EraserShape);
inkCanvas.Strokes.Replace(stroke, eraseResult);
RoutedEventArgs e2 = new RoutedEventArgs(StrokeErasedEvent, this);
RaiseEvent(e2);
}
}
}
protected virtual void OnStrokeErasing(object sender, System.Windows.Controls.InkCanvasStrokeErasingEventArgs e)
{
InkCanvasStrokeErasingEventArgs e2 = new InkCanvasStrokeErasingEventArgs(e.Stroke);
OnStrokeErasing(e2);
}
