public interface WindowFocusListener extends EventListener
The listener interface for receiving
WINDOW_LOST_FOCUS events. The class that is interested in processing a
WindowEvent either implements this interface (and all the methods it contains) or extends the abstract
WindowAdapter class (overriding only the methods of interest). The listener object created from that class is then registered with a
Window using the
addWindowFocusListener method. When the
Window's status changes by virtue of it being opened, closed, activated, deactivated, iconified, or deiconified, or by focus being transfered into or out of the
Window, the relevant method in the listener object is invoked, and the
WindowEvent is passed to it.
void windowGainedFocus(WindowEvent e)
Invoked when the Window is set to be the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.
void windowLostFocus(WindowEvent e)
Invoked when the Window is no longer the focused Window, which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.
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