/// <summary>
/// Returns the active input elements at a point on an <see cref="IInputElement"/>.
/// </summary>
/// <param name="element">The element to test.</param>
/// <param name="p">The point on <paramref name="element"/>.</param>
/// <returns>
/// The active input elements found at the point, ordered topmost first.
/// </returns>
public static IEnumerable <IInputElement> GetInputElementsAt(this IInputElement element, Point p)
{
Contract.Requires <ArgumentNullException>(element != null);
return(element.GetVisualsAt(p, s_hitTestDelegate).Cast <IInputElement>());
}
public static IEnumerable <IInputElement> GetInputElementsAt(this IInputElement element, Point p)
{
element = element ?? throw new ArgumentNullException(nameof(element));
return(element.GetVisualsAt(p, s_hitTestDelegate).Cast <IInputElement>());
}