在PySimpleGUI中实现异步功能的详细指南

import PySimpleGUI as sg
sg.theme('SandyBeach')
layout = [  [sg.Text('Stopwatch', size =(20, 2), justification ='center')],
            [sg.Text(size =(10, 2), font =('Arial', 20), justification ='center', key ='-OUTPUT-')],
            [sg.T(' ' * 5), sg.Button('Start / Stop', focus = True), sg.Quit()]]
window = sg.Window('Stopwatch Timer', layout)
timer_running, counter = True, 0
# Event Loop
while True:  
    # Please try and use as high of a timeout value as you can                               
    event, values = window.read(timeout = 10) 
    # if user closed the window using X or clicked Quit button
    if event in (None, 'Quit'):             
        break
    elif event == 'Start / Stop':
        timer_running = not timer_running
    if timer_running:
        window['-OUTPUT-'].update('{:02d}:{:02d}.{:02d}'.format((counter // 100) // 60, 
                                                 (counter // 100) % 60, counter % 100))
        counter += 1
window.close()