static void fe_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
FrameworkElement fe = sender as FrameworkElement;
if (fe != null)
{
Window w = MoreVisualTreeHelper.Find(fe, typeof(Window)) as Window;
if (w != null)
{
FrameworkElement position = GetPosition(fe);
Point point = position.TransformToAncestor(w).Transform(new Point(0, 0));
Canvas.SetLeft(fe, point.X - 10);
Canvas.SetTop(fe, point.Y - 10);
}
}
}
