嗨,我的 Java 应用程序中只有一个 JDialog 框。如果它失去焦点,我想让它不可见。我尝试了不同的方法,但无法触发任何窗口焦点事件。这是我的代码:
public void windowGainedFocus(WindowEvent e) {
System.out.println("gained focus");
}
public void windowLostFocus(WindowEvent e) {
System.out.println("lost focus");
}