Gets a value that indicates whether keyboard focus is anywhere inside the element bounds, including if keyboard focus is inside the bounds of any visual child elements.
Assembly: PresentationCore (in PresentationCore.dll)
This interface is not intended for public implementation. For more information, see remarks for the IInputElement interface.
Existing implementations in the Windows Presentation Foundation (WPF) core (see ContentElement::IsKeyboardFocusWithin and UIElement::IsKeyboardFocusWithin) establish this property as a dependency property.