WSL2 中 pynput 无法捕获按键输入？

视频链接：https://www.bilibili.com/video/BV1vCmiB1ENV/?vd_source=5ba34935b7845cd15c65ef62c64ba82f

你是否遇到过在 WSL2 中，pynput 无响应，无法捕获键盘的输入？

WSL2 本质是 Linux 内核子系统，无法直接访问 Windows 的硬件输入，通过输入 ls /dev 发现实际是没有 input，这里有两种方式：

1. 通过 usb 重定向给 WSL2 也可以实现，比如之前用过的 WSL USB Manager 工具

1. Linux 下的 pynput 依赖 X11/Xorg（显示服务器）实现全局键盘监听，无 GUI 环境（X Server）时，pynput 无法注册 / 捕获任何键盘事件，所以随便创建一个 X11 显示窗口即可

import threading import tkinter as tk def startGui(): root = tk.Tk() root.title("WSL2 X11 Bridge") root.geometry("1x1") root.iconify() root.mainloop() def runGuiThread(): gui_thread = threading.Thread(target=startGui, daemon=True) gui_thread.start()

完整测试代码如下：

from pynput import keyboard import time class KeyListener: def __init__(self, key_states, callbackFunc=None): self.listener = keyboard.Listener(on_press=self.onPress, on_release=self.onRelease) self.key_states = key_states self.callbackFunc = callbackFunc def join(self): self.listener.join() def start(self): self.listener.start() def stop(self): self.listener.stop() def onPress(self, key): if key in self.key_states: self.key_states[key] = True if key == keyboard.Key.esc: return False def onRelease(self, key): if key in self.key_states: self.key_states[key] = False def callbackFunc(self): pass def test_callback(): print('test_callback') if __name__ == '__main__': key_states = { keyboard.Key.up: False, keyboard.Key.down: False, keyboard.Key.left: False, keyboard.Key.right: False, keyboard.Key.alt_l: False, keyboard.Key.alt_r: False, } key_listener = KeyListener(key_states, callbackFunc=test_callback) key_listener.start() import threading,tkinter as tk def startGui(): root = tk.Tk() root.title("WSL2 X11 Bridge") root.geometry("1x1") root.iconify() root.mainloop() def runGuiThread(): gui_thread = threading.Thread(target=startGui, daemon=True) gui_thread.start() runGuiThread() while True: if key_states[keyboard.Key.up]: print('up') if key_states[keyboard.Key.down]: print('down') if key_states[keyboard.Key.left]: print('left') if key_states[keyboard.Key.right]: print('right') if key_states[keyboard.Key.alt_l]: print('alt_l') if key_states[keyboard.Key.alt_r]: print('alt_r') time.sleep(0.01) key_listener.join()