How to use Python to implement the windows countdown lock screen function-Python Tutorial-php.cn

Implementation ideas

1) Mainly introduces python to implement the windows countdown lock screen function

Python implements the windows countdown lock screen function

# 倒计时锁屏 import time from ctypes import * def closewindows(closetime): while closetime>0: print(closetime) time.sleep(1) closetime-=1 user32 = windll.LoadLibrary('user32.dll') user32.LockWorkStation() if __name__ == "__main__": closewindows(3)

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2) Expansion of knowledge points

Python code for windows lock screen

C:\Users\HAS>python Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:54:40) [MSC v.1900 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> from ctypes import * >>> user32 = windll.LoadLibrary('user32.dll') >>> user32.LockWorkStation()

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3) Python implementation of countdown gadget

#!/usr/bin/env python # coding=utf-8 import threading import time import Queue from Tkinter import * import tkMessageBox import logging logging.basicConfig(level=logging.INFO) ## Communication queue commQueue = Queue.Queue() g_time = 0 ## Function run in thread def timeThread(): global g_time g_time = timeVar.get() * 60 while 1: logging.info("线程放入队列:%d".decode("utf-8") % g_time) commQueue.put(g_time) try: root.event_generate('<>', when='tail') except TclError: break time.sleep(1) g_time -= 1 if g_time==-1: begin_btn["fg"] = "black" clockVar.set("开始计时") break def timeChanged(event): x = commQueue.get() logging.info("获取队列:%d".decode("utf-8") % x) minits = x//60 seconds = x%60 s = "剩余时间 {:02}:{:02}".format(minits, seconds) begin_btn["fg"] = "blue" clockVar.set(s) if x==0: tkMessageBox.showinfo("提醒","时间已到") def clock_func(*args): global g_time if threading.activeCount()>1: g_time = timeVar.get() * 60 else: th=threading.Thread(target=timeThread) th.start() ## Create main window root = Tk() root.title("计时工具") root.geometry("180x95-0-45") root.resizable(width=FALSE,height=FALSE) root.wm_attributes("-topmost",1) frame = Frame(root) frame.pack() Label(frame,text="设定时间间隔").grid(row=1,column=2) timeVar = IntVar() clockVar = StringVar() time_entry = Entry(frame, textvariable=timeVar, width=8) time_entry["justify"] = "center" time_entry.grid(row=2,column=2,sticky="W,E") begin_btn = Button(frame,textvariable=clockVar,command=clock_func) begin_btn.grid(row=3,column=2) timeVar.set(8) begin_btn["fg"] = "black" clockVar.set("开始计时") for child in frame.winfo_children(): child.grid_configure(pady=3) time_entry.focus() root.bind('<>', timeChanged) root.bind("",clock_func) root.mainloop()

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