使用 tkinter 为 Python 程序创建 UI。 Tkinter 中的按钮可以多次按下。如何创建 "One Process" 弹出窗口？

Question

这是简单的 UI 我对此的尝试...

import tkinter as ttk
import subprocess
import sys
import time
import os
import tkinter.font as font
from tkinter import messagebox
from tkinter.ttk import *

app = ttk.Tk()

app.geometry("400x400")
app.configure(bg='gray')

photo = ttk.PhotoImage(file=r"C:\Users\ex\ex_button_active.png")
myFont = font.Font(family='Helvetica', size=20, weight='normal')

ttk.Label(app, text='Ex', bg='gray', font=(
    'Verdana', 15)).pack(side=ttk.TOP, pady=10)
app.iconbitmap(r'C:\Users\ex\ex_icon.ico')


def ex_activation():
    global pro
    print("Running program!")
    pro = subprocess.Popen("python programex.py", shell=True)


def ex_stop():
    global pro
    print("Stopping Program... Please Wait!")
    os.kill(pro.pid, 0)


ex_activation_button = ttk.Button(app, bg='black', image=photo, width=120, height=120, command=ex_activation)
ex_activation_button += 1
if ex_activation_button < 1:
    messagebox.showinfo("showinfo", "In Order to Run Again, Press ""Stop Program""")

ex_stop_button = ttk.Button(app, bg='Gray', text='Stop Program', width=12, command=ex_stop, height=3)

ex_stop_button['font'] = myFont

app.title("Ex")
ex_activation_button.pack(side=ttk.TOP)
ex_stop_button.pack(side=ttk.LEFT)

# app.mainloop()
while True:
    try:
        app.update()
        app.update_idletasks()
    except KeyboardInterrupt:
        pass

此处的目标是在多次单击按钮时添加“仅一个进程”警告。真正的问题是在单击停止按钮后，我将如何重置此计数器以计算单击开始按钮的次数。这是一个循环程序，这就是我有一个停止按钮的原因。非常感谢任何帮助！

Answer 1

您可以通过更改按钮的状态来禁用该按钮。禁用后按钮无法点击

# disable a button:
ex_activation_button['state'] = 'disabled'

# re-enable the button:
ex_activation_button['state'] = 'normal'



# here is the change you need to add:
def ex_activation():
    global pro
    print("Running program!")
    ex_activation_button['state'] = 'disabled'
    pro = subprocess.Popen("python programex.py", shell=True)

def ex_stop():
    global pro
    print("Stopping Program... Please Wait!")
    os.kill(pro.pid, 0)
    ex_activation_button['state'] = 'normal'

使用 tkinter 为 Python 程序创建 UI。 Tkinter 中的按钮可以多次按下。如何创建 "One Process" 弹出窗口？

Creating a UI for Python Program using tkinter. The button in Tkinter can be pressed multiple times. How can I create a "One Process" Pop Up?

python

python-3.x

button

tkinter

messagebox