private static void OnTextToolTipManagerChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
TextToolTipManager oldValue = (TextToolTipManager)e.OldValue;
TextToolTipManager newValue = (TextToolTipManager)e.NewValue;
oldValue?.Detach();
newValue?.Attach();
}
private static void SetTextToolTipManager(DependencyObject element, TextToolTipManager value)
{
if (element == null)
{
throw new ArgumentNullException(nameof(element));
}
element.SetValue(TextToolTipManagerProperty, value);
}