python中tkinter实现GUI程序三个实例教程

import tkinter as tk

root = tk.Tk()
root.mainloop()

def on_click():
    print("Button clicked!")

button = tk.Button(root, text="Click Me", command=on_click)
button.pack()

import tkinter as tk

def hello_world():
    print("hello world")

app = tk.Tk()
app.title("Hello World App")
button = tk.Button(app, text="Click", command=hello_world)
button.pack()
app.mainloop()

from tkinter import messagebox

def check_login():
    username = entry_username.get()
    password = entry_password.get()
    if username == "your_username" and password == "your_password":  # replace with actual username and password
        messagebox.showinfo("Login Status", "登录成功")
    else:
        messagebox.showinfo("Login Status", "用户名或密码错误")

app = tk.Tk()
app.title("Login")

tk.Label(app, text="Username:").pack()
entry_username = tk.Entry(app)
entry_username.pack()

tk.Label(app, text="Password:").pack()
entry_password = tk.Entry(app, show="*")
entry_password.pack()

button_login = tk.Button(app, text="Login", command=check_login)
button_login.pack()

app.mainloop()

import tkinter as tk

def display_info():
    work = entry_work.get()
    author = entry_author.get()
    text_info.delete('1.0', tk.END)
    text_info.insert(tk.END, f"作品: {work}\n作者: {author}")

app = tk.Tk()
app.title("Information Display")

tk.Label(app, text="作品").pack()
entry_work = tk.Entry(app)
entry_work.pack()

tk.Label(app, text="作者").pack()
entry_author = tk.Entry(app)
entry_author.pack()

button_read = tk.Button(app, text="读取信息", command=display_info)
button_read.pack()

text_info = tk.Text(app)
text_info.pack()

button_exit = tk.Button(app, text="退出", command=app.quit)
button_exit.pack()

app.mainloop()