Window.java 文件源码

/**
 * Adds the specified listener to this window.
 */
public void addWindowFocusListener (WindowFocusListener wfl)
{
  if (wfl != null)
    {
      newEventsOnly = true;
      windowFocusListener = AWTEventMulticaster.add (windowFocusListener,
                                                     wfl);
    }
}