就不多介绍了，直接上代码吧。

#coding:utf-8

import datetime, time, os, wx

import tkinter, threading

from tkinter import * #控件基础包

#全局变量

stopFlag = False;

winWidth = 0;

winHeight = 0;

#倒计时

def countdown(flag):

value_s = var_s.get();

try:

seconds = int(value_s);

#操作

if flag == "shut":

shutdown(value_s);

else:

restart(value_s);

#显示倒计时

show_countdown(seconds);

except:

label_pro.config(text="请输入正确的数字。");

root.update();

return;

#显示倒计时

def show_countdown(seconds):

global stopFlag;

stopFlag = False;

while seconds > 0:

if stopFlag:

break;

time.sleep(1);

seconds = seconds - 1;

label_pro.config(text="关机倒计时： "+str(seconds)+" 秒");

root.update();

#关机操作

def shutdown(seconds):

os.system("shutdown -s -f -t "+seconds);

#重启操作

def restart(seconds):

os.system("shutdown -r -f -t "+seconds);

#终止关机操作

def stopdown():

global stopFlag;

stopFlag = True;

os.system("shutdown -a");

#退出操作

def exit():

still.set(0);

thread.join(0.2);

root.destroy();#关闭窗口

#获取当前时间

def getDateTime():

while still.get()==1:

dateTime = datetime.datetime.now();

hourStr = addZero(dateTime.hour);

minuteStr = addZero(dateTime.minute);

secondStr = addZero(dateTime.second);

timeValue = hourStr+':'+minuteStr+':'+secondStr;

label_time.config(text='当前时间：'+timeValue); #显示当前时间

time.sleep(0.2);

#补零

def addZero(number):

valueStr = str(number);

if number < 10:

valueStr = "0"+valueStr;

return valueStr;

#获取屏幕分辨率

def getScreenResolution():

app = wx.App();

screenArr = wx.DisplaySize()

app.MainLoop();

return screenArr;

#设置软件透明度

def setScreenTransparent(ev=None):

scaleValue = scale.get();

root.attributes('-alpha',scaleValue/100);#半透明

if __name__ == '__main__':

#屏幕分辨率

screenArr = getScreenResolution();

winWidth = screenArr[0];

winHeight = screenArr[1];

###grid布局###

root = tkinter.Tk();

root.title("定时关机");

root.geometry('200x160+'+str(winWidth-230)+'+'+str(winHeight-210));#初始大小与位置

root.attributes('-topmost',1);#总是在顶端

root.overrideredirect(True);#不显示标题栏

#透明度

fm_scale = Frame(root);

fm_scale.grid(row=0, column=0, padx=10, pady=5);

label_t = Label(fm_scale,text="透明度：");

label_t.grid(row=0, column=0);

scale = Scale(fm_scale,width=13,length=120,showvalue=0,from_=20,to=100,resolution=1,orient=HORIZONTAL,command=setScreenTransparent);#缩放比例尺

scale.set(70);#初始值

scale.grid(row=0, column=1);

#当前时间

fm_time = Frame(root);

fm_time.grid(row=1, column=0, padx=10, pady=0);

#窗口是否仍在运行

still = tkinter.IntVar(value=1);

#显示当前时间

label_time = Label(fm_time,text="",foreground='blue',font='Helvetica -14 bold');

label_time.grid(row=0, column=0);

thread = threading.Thread(target=getDateTime);

thread.daemon =True;

thread.start();

#关机时间

fm_show = Frame(root);

fm_show.grid(row=2, column=0, padx=10, pady=5);

label_s = Label(fm_show,text="定时关机：");

label_s.grid(row=0, column=0);

var_s = tkinter.StringVar();

var_s.set(0);

entry_s = Entry(fm_show, textvariable=var_s, width=5);

entry_s.grid(row=0, column=1);

label_s = Label(fm_show,text="秒");

label_s.grid(row=0, column=2);

#提示

fm_pro = Frame(root);

fm_pro.grid(row=3, column=0, padx=10, pady=5);

label_pro = Label(fm_pro,foreground='red',text="关机倒计时： 0 秒",font='Helvetica -14 bold');

label_pro.grid(row=0, column=2);

#按钮操作

fm_but = Frame(root);

fm_but.grid(row=4, column=0, padx=10, pady=0);

but_shut = Button(fm_but,text="关机",width=5,command=lambda:countdown(flag='shut'));

but_shut.grid(row=0, column=3);

but_shut = Button(fm_but,text="重启",width=5,command=lambda:countdown(flag='rest'));

but_shut.grid(row=0, column=4);

but_shut = Button(fm_but,text="终止",width=5,command=stopdown);

but_shut.grid(row=0, column=5);

but_shut = Button(fm_but,text="退出",width=5,command=exit);

but_shut.grid(row=0, column=6);

root.mainloop();

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