private static void OnAreaVisibilityChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
YT_AreaIcon dai = (YT_AreaIcon)d;
dai.FlowIcon.Visible = (bool)e.NewValue;
}
private static void OnAttachedWindowChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
YT_AreaIcon dai = (YT_AreaIcon)d;
}