FocusEventBase<T0>.relatedTarget
public UIElements.Focusable relatedTarget;
Description 描述
For FocusOut and Blur events, contains the element that gains the focus. For FocusIn and Focus events, contains the element that loses the focus.
For FocusOut and Blur events, contains the element that gains the focus. For FocusIn and Focus events, contains the element that loses the focus.