如何使用Java Swing重新映射键盘键? [英] How to remap a keyboard key using Java Swing?

问题描述

如何使用Java重新映射键盘上的按键，以便赋予按键新的含义?

How do I remap a key on the keyboard using Java so that I can give the key a new meaning?

推荐答案

如果我理解这个问题，那就是如何显式定义特定键的行为.这是我实现键盘快捷键的方法-希望它可以回答您的问题.在下面的示例中，我相信您可以将"this"更改为希望明确设置键盘行为的特定组件，从而覆盖其默认行为.我通常是在面板或框架的背景下进行此操作.

If I understand the question, it's how to explicitly define behavior for a specific key. Here's how I do this to implement keyboard shortcuts -- hopefully it answers your question. In my example below, I believe you can change 'this' to be the specific component you wish to explicitly set the keyboard behavior on, overriding its default behavior. I usually do this in the context of a panel or frame.

private void addHotKey(KeyStroke keyStroke, String inputActionKey, Action listener) {
    ActionMap actionMap = this.getActionMap();
    InputMap inputMap = this.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
    inputMap.put(keyStroke, inputActionKey);
    actionMap.put(inputActionKey, listener);
}

inputActionKey只是用于映射操作的任意键字符串.调用此方法以侦听DEL键的示例:

The inputActionKey is just an arbitrary key string to use for mapping the action. An example of invoking this method to listen for the DEL key:

    KeyStroke keyStroke = KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0);
    Action listener = new AbstractAction() {
        public void actionPerformed(ActionEvent e) {
            // delete something...
        }
    };
    addHotKey(keyStroke, "MainWindowDEL", listener);

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