如何以编程方式关闭JFrame [英] How to programmatically close a JFrame

问题描述

关闭 JFrame 的正确方法是什么，就像用户点击 X 一样关闭按钮，或按 Alt + F4 （在Windows上）？

What's the correct way to get a JFrame to close, the same as if the user had hit the X close button, or pressed Alt+F4 (on Windows)?

我有我的默认关闭操作设置我想要的方式，通过：

I have my default close operation set the way I want, via:

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

它完全符合我对上述控件的要求。这个问题与此无关。

It does exactly what I want with the aforementioned controls. This question isn't about that.

我真正想做的是使GUI的行为与按 X的行为相同关闭按钮会导致它出现。

What I really want to do is cause the GUI to behave in the same way as a press of X close button would cause it to behave.

假设我要扩展 WindowAdaptor 并且然后通过 addWindowListener（）添加我的适配器实例作为监听器。我希望通过 windowDeactivated（）， windowClosing（）和<$ c $看到相同的调用序列c> windowClosed（）与 X 关闭按钮一样。可以这么说，撕掉窗户就像告诉它撕裂自己一样。

Suppose I were to extend WindowAdaptor and then add an instance of my adaptor as a listener via addWindowListener(). I would like to see the same sequence of calls through windowDeactivated(), windowClosing(), and windowClosed() as would occur with the X close button. Not so much tearing up the window as telling it to tear itself up, so to speak.

推荐答案

如果你想要GUI来表现就好像你点击了 X 关闭按钮，然后你需要将一个窗口关闭事件发送到窗口。来自的 ExitAction 关闭应用程序允许您将此功能添加到菜单项或任何轻松使用操作的组件。

If you want the GUI to behave as if you clicked the X close button then you need to dispatch a window closing event to the Window. The ExitAction from Closing An Application allows you to add this functionality to a menu item or any component that uses Actions easily.

frame.dispatchEvent(new WindowEvent(frame, WindowEvent.WINDOW_CLOSING));

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