e636. Listening to All Key Events Before Delivery to Focused Component
Registering a key event dispatcher with the keyboard focus manager allows you to see all key events before they are sent to the focused component. It is possible to modify the event or even prevent the event from being delivered.
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher( new KeyEventDispatcher() { public boolean dispatchKeyEvent(KeyEvent e) { // This example converts all typed keys to upper case if (e.getID() == KeyEvent.KEY_TYPED) { e.setKeyChar(Character.toUpperCase(e.getKeyChar())); } // If the key should not be dispatched to the // focused component, set discardEvent to true boolean discardEvent = false; return discardEvent; } });
Related Examples |
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】凌霞软件回馈社区,博客园 & 1Panel & Halo 联合会员上线
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步