pynput 不让 tkinter 生成 window

Question

如果按下 Esc 键，我有 pynput 读取按键，tkinter 在 window 中显示它们。两者都工作正常，但是当我将它们放入一个代码中时，什么也没有发生。这是我的代码：

import tkinter as tk
from pynput import keyboard

listen = False

def onpress(key):
    global listen
    if str(key) == 'Key.esc':
        listen = not listen
    if listen:
        if str(key) == 'Key.1':
            labelval.set(labelval.get()+'1')
            print('1')

win = tk.Tk()
labelval = tk.StringVar()
lab = tk.Label(win, textvariable=entryval)
lab.grid(column=0,row=0)

with keyboard.Listener(
    on_press = onpress) as listener:
    listener.join()

当我运行它时没有任何反应，tk window 没有出现，并且 1 没有打印到屏幕上。有什么建议么？当我取出 listener.join() 时，一切正常，但它不能 keylog

Answer 1

您必须运行在 with 和 join() 之间编码 - 并使用 mainloop() 显示 tkinter window

with keyboard.Listener(on_press=onpress) as listener:

    win = tk.Tk()
    labelval = tk.StringVar()
    lab = tk.Label(win, textvariable=labelval)
    lab.grid(column=0,row=0)
    win.mainloop()

    listener.join()

或至少 mainloop()

win = tk.Tk()
labelval = tk.StringVar()
lab = tk.Label(win, textvariable=labelval)
lab.grid(column=0,row=0)

with keyboard.Listener(on_press=onpress) as listener:

    win.mainloop()

    listener.join()

不写也可以with()

listener = keyboard.Listener(on_press=onpress)
listener.start()

win = tk.Tk()
labelval = tk.StringVar()
lab = tk.Label(win, textvariable=labelval)
lab.grid(column=0,row=0)
win.mainloop()

listener.join()

顺便说一句：您创建了 labelval 但您使用了 textvariable=entryval

在 Linux 我不得不使用不同的方法来识别 1

import tkinter as tk
from pynput import keyboard

listen = False

def onpress(key):
    global listen

    #if key == keyboard.Key.esc:
    if str(key) == 'Key.esc':
        listen = not listen

    if listen:
        if hasattr(key, 'char') and key.char == '1':
            labelval.set(labelval.get()+'1')
            print('1!')

win = tk.Tk()
labelval = tk.StringVar()
lab = tk.Label(win, textvariable=labelval)
lab.grid(column=0,row=0)

with keyboard.Listener(on_press=onpress) as listener:

    win.mainloop()

    listener.join()

pynput 不让 tkinter 生成 window

pynput not letting tkinter make window

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