如何添加tkinter进度栏不确定功能

Question

from tkinter import *
from tkinter import ttk

def DOTEST_GUI():
    GUI = Tk()
    w = 1920
    h = 1080
    ws = GUI.winfo_screenwidth()
    hs = GUI.winfo_screenheight()
    x = (ws/2) - (w/2)
    y = (hs/2) - (h/2)
    GUI.geometry(f'{w}x{h}+{x:.0f}+{y:.0f}')

    def start_p():
        progress.start(5)

    def stop_P():
        progress.stop()

    def print_cf(event = None):
        import time
        print('s')
        start_p()
        time.sleep(5)
        stop_P()

    B_TEST = ttk.Button(GUI, text = "test", width = 15, command = print_cf)
    B_TEST.pack()

    progress = ttk.Progressbar(GUI, orient = HORIZONTAL, length = 100, mode = 'indeterminate')
    progress.pack(pady = 10)

    GUI.bind("<Return>", print_cf)

    GUI.focus()
    GUI.mainloop()

DOTEST_GUI()

遵循此代码进度栏无法正常运行。

我尝试删除stop_p（），它在time.sleep（5）的5秒后工作。

我希望它开始运行5秒钟，直到stop_p（）代码。

Answer 1

如果要在一定的时间内运行progressbar，然后停止它，则可以执行这样的操作。合并print_cf函数以启动并停止进度，并设置5个范围，在两者之间睡1秒，然后停止progressbar。将其放在线程上可以让您做一些比睡一秒钟并打印一些东西要耗时的事情。

from tkinter import *
from tkinter import ttk
import time
import threading



                    
def DOTEST_GUI():
    GUI = Tk()
    w = 1920
    h = 1080
    ws = GUI.winfo_screenwidth()
    hs = GUI.winfo_screenheight()
    x = (ws/2) - (w/2)
    y = (hs/2) - (h/2)
    GUI.geometry(f'{w}x{h}+{x:.0f}+{y:.0f}')


    def run_thread():
        execute_thread = threading.Thread(target=print_cf)
        execute_thread.start()

        
    def print_cf(event = None):
        progress.start()
        print('s')
        for i in range(5):
            print(i)
            time.sleep(1)
            if i ==4:
                progress.stop()


    B_TEST = ttk.Button(GUI, text = "test", width = 15, command = run_thread)
    B_TEST.pack()

    progress = ttk.Progressbar(GUI, orient = HORIZONTAL, length = 100, mode = 'indeterminate')
    progress.pack(pady = 10)

    GUI.bind("<Return>", print_cf)

    GUI.focus()
    GUI.mainloop()
        

DOTEST_GUI()