如何以编程方式打开/关闭 Caps Lock、Scroll Lock 和 Num Lock [英] How Can I Turn On/Off Caps Lock, Scroll Lock, and Num Lock Programmatically

问题描述

是否有打开/关闭 Windows 上的 Caps Lock、Scroll Lock 和 Num Lock 的方法?

Is there a method to turn on/off Caps Lock, Scroll Lock and Num Lock on Windows?

请以任何语言发布代码片段...但我更喜欢 C/C++ 或 Java.

Please post the code snippet in any language... but my preference is C/C++ or Java.

附言我正在制作一个使滚动锁定 LED 闪烁的莫尔斯电码程序.

P.S. I'm making a Morse Code program which blinks the Scroll Lock LED.

推荐答案

Java 代码是...

The Java code is...

获取 Toolkit 对象...

Get the Toolkit object...

Toolkit toolkit = Toolkit.getDefaultToolkit();

要打开 Caps Lock、Scroll Lock、Num Lock...

To turn on Caps Lock, Scroll Lock, Num Lock...

toolkit.setLockingKeyState(KeyEvent.VK_CAPS_LOCK, true);
toolkit.setLockingKeyState(KeyEvent.VK_SCROLL_LOCK, true);
toolkit.setLockingKeyState(KeyEvent.VK_NUM_LOCK, true);

要关闭 Caps Lock、Scroll Lock、Num Lock...

To turn off Caps Lock, Scroll Lock, Num Lock...

toolkit.setLockingKeyState(KeyEvent.VK_CAPS_LOCK, false);
toolkit.setLockingKeyState(KeyEvent.VK_SCROLL_LOCK, false);
toolkit.setLockingKeyState(KeyEvent.VK_NUM_LOCK, false);

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