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[英]How do I execute a command after pushing a button while also closing the window with the button in python (with tkinter)?
[英]How do I execute a command after some time but with a cancel button
我想要的是让我的电脑在大约 10 秒后进入睡眠状态,但我希望它有一条带有取消按钮的消息
这是我试过的:
这是我对 tkinter 的警告:
from tkinter import *
import ctypes
def callback():
quit()
root = Tk()
root.geometry("400x268")
root.title("Alert")
root.configure(background='light blue')
label = Label(root, text="ALERT this device will go to sleep soon!", fg="red")
label.config(font=("Courier", 12))
label.configure(background='light blue')
quitButton = Button(root, text="do not sleep!", command=callback)
quitButton.pack()
quitButton.place(x=150, y=150)
label.pack()
root.mainloop()
我需要它倒数直到睡眠(这个命令):
import time
import os
os.system("Powercfg -H OFF")
os.system("rundll32.exe powrprof.dll,SetSuspendState 0,1,0")
但如果我按下取消按钮,它就会停止,什么也不会发生
您可以使用after
方法。 after(DELAY_MS, CALLBACK=None, *args)
。 像这样的东西:
from tkinter import *
import ctypes, os
def callback():
active.set(False)
#root.destroy() # Uncoment this to close the window
def sleep():
if not active.get(): return
root.after(1000, sleep)
timeLeft.set(timeLeft.get()-1)
timeOutLabel['text'] = "Time Left: " + str(timeLeft.get()) #Update the label
if timeLeft.get() == 0: #sleep if timeLeft = 0
os.system("Powercfg -H OFF")
os.system("rundll32.exe powrprof.dll,SetSuspendState 0,1,0")
callback()
root = Tk()
root.geometry("400x268")
root.title("Alert")
root.configure(background='light blue')
timeLeft = IntVar()
timeLeft.set(10) # Time in seconds until shutdown
active = BooleanVar()
active.set(True) # Something to show us that countdown is still going.
label = Label(root, text="ALERT this device will go to sleep soon!", fg="red")
label.config(font=("Courier", 12))
label.configure(background='light blue')
label.pack()
timeOutLabel = Label(root, text = 'Time left: ' + str(timeLeft.get()), background='light blue') # Label to show how much time we have left.
timeOutLabel.pack()
quitButton = Button(root, text="do not sleep!", command=callback)
quitButton.pack()
quitButton.place(x=150, y=150)
root.after(0, sleep)
root.mainloop()
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