如何用 Python 创建现代图形用户界面

pip install customtkinter
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import customtkinter as ctk

# Initial configuration
ctk.set_appearance_mode("dark")  # Set appearance mode: system, light, dark
ctk.set_default_color_theme("dark-blue")  # Set color theme: blue, dark-blue, green

# Create the main window
root = ctk.CTk()
root.geometry("500x350")  # Set the window size
root.title("Login System")  # Set the window title

# Example login function
def login():
    print("Login Successful")  # Placeholder function to simulate login

# Create the main frame
frame = ctk.CTkFrame(master=root)
frame.pack(pady=20, padx=60, fill="both", expand=True)  # Add frame with padding and expansion

# Create components
label = ctk.CTkLabel(master=frame, text="Login System", font=("Roboto", 24))
label.pack(pady=12, padx=10)  # Add a label with text and font settings

entry_username = ctk.CTkEntry(master=frame, placeholder_text="Username")
entry_username.pack(pady=12, padx=10)  # Add a username entry field with placeholder text

entry_password = ctk.CTkEntry(master=frame, placeholder_text="Password", show="*")
entry_password.pack(pady=12, padx=10)  # Add a password entry field with placeholder text and masked input

button = ctk.CTkButton(master=frame, text="Login", command=login)
button.pack(pady=12, padx=10)  # Add a login button and link it to the login function

checkbox = ctk.CTkCheckBox(master=frame, text="Remember Me")
checkbox.pack(pady=12, padx=10)  # Add a "Remember Me" checkbox

# Start the main loop
root.mainloop()  # Run the GUI application
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import customtkinter as ctk
from tkinter import messagebox

# Dictionary to store registered users (username: password)
registered_users = {}

# Registration function
def register():
    username = entry_register_username.get()
    password = entry_register_password.get()

    if username in registered_users:
        messagebox.showerror("Error", "Username is already registered.")
    else:
        registered_users[username] = password
        messagebox.showinfo("Success", "User registered successfully.")
        register_frame.pack_forget()
        show_login()

# Login function
def login():
    username = entry_username.get()
    password = entry_password.get()

    if username in registered_users and registered_users[username] == password:
        messagebox.showinfo("Success", "Login successful.")
    else:
        messagebox.showerror("Error", "Incorrect username or password.")

# Function to show the registration screen
def show_register():
    login_frame.pack_forget()
    register_frame.pack(pady=20, padx=60, fill="both", expand=True)

# Function to show the login screen
def show_login():
    register_frame.pack_forget()
    login_frame.pack(pady=20, padx=60, fill="both", expand=True)

# Initial configuration
ctk.set_appearance_mode("dark")  # Mode: system, light, dark
ctk.set_default_color_theme("dark-blue")  # Theme: blue, dark-blue, green

# Create the main window
root = ctk.CTk()
root.geometry("500x400")
root.title("Registration and Login System")

# Create the login frame
login_frame = ctk.CTkFrame(master=root)
label_login = ctk.CTkLabel(master=login_frame, text="Login System", font=("Roboto", 24))
label_login.pack(pady=12, padx=10)
entry_username = ctk.CTkEntry(master=login_frame, placeholder_text="Username")
entry_username.pack(pady=12, padx=10)
entry_password = ctk.CTkEntry(master=login_frame, placeholder_text="Password", show="*")
entry_password.pack(pady=12, padx=10)
button_login = ctk.CTkButton(master=login_frame, text="Login", command=login)
button_login.pack(pady=12, padx=10)
button_show_register = ctk.CTkButton(master=login_frame, text="Register", command=show_register)
button_show_register.pack(pady=12, padx=10)
checkbox_login = ctk.CTkCheckBox(master=login_frame, text="Remember Me")
checkbox_login.pack(pady=12, padx=10)

# Create the register frame
register_frame = ctk.CTkFrame(master=root)
label_register = ctk.CTkLabel(master=register_frame, text="Register System", font=("Roboto", 24))
label_register.pack(pady=12, padx=10)
entry_register_username = ctk.CTkEntry(master=register_frame, placeholder_text="Username")
entry_register_username.pack(pady=12, padx=10)
entry_register_password = ctk.CTkEntry(master=register_frame, placeholder_text="Password", show="*")
entry_register_password.pack(pady=12, padx=10)
button_register = ctk.CTkButton(master=register_frame, text="Register", command=register)
button_register.pack(pady=12, padx=10)
button_show_login = ctk.CTkButton(master=register_frame, text="Login", command=show_login)
button_show_login.pack(pady=12, padx=10)

# Show the login frame at the start
login_frame.pack(pady=20, padx=60, fill="both", expand=True)

# Start the main loop
root.mainloop()
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