基于Tkinter OptionMenu实现窗口内容动态切换的技术求助

Got it, let's implement content switching using Frames—each frame will act as a distinct "page" for your three options, and we'll toggle their visibility when the OptionMenu selection changes. Here's the modified code with clear explanations:

from tkinter import *

def switch_page(*args):
    # First, hide all frames to avoid overlapping content
    for frame in [intro_frame, encrypt_frame, decrypt_frame]:
        frame.pack_forget()
    
    # Show the frame that matches the selected option
    selected = variable.get()
    if selected == "Einführung":
        intro_frame.pack(fill="both", expand=True)
    elif selected == "Verschlüsseln":
        encrypt_frame.pack(fill="both", expand=True)
    elif selected == "Entschlüsseln":
        decrypt_frame.pack(fill="both", expand=True)

# Initialize main window
window = Tk()
window.geometry('400x300')
window.title("Verschlüsselungs-Tool")

# Set up OptionMenu
OptionList = [ "Einführung", "Verschlüsseln", "Entschlüsseln" ]
variable = StringVar(window)
variable.set(OptionList[0])  # Default to first option

# Listen for changes to the selected option
variable.trace_add("write", switch_page)

opt = OptionMenu(window, variable, *OptionList)
opt.config(width=90, font=('Calibri', 12))
opt.pack(side="top", padx=10, pady=10)

# Create frames for each page
# Introduction page
intro_frame = Frame(window)
Label(intro_frame, text="Willkommen!", font=('Calibri', 14)).pack(pady=20)
Label(intro_frame, text="Wählen Sie eine Option oben, um fortzufahren.", font=('Calibri', 12)).pack()

# Encrypt page
encrypt_frame = Frame(window)
Label(encrypt_frame, text="Text verschlüsseln", font=('Calibri', 14)).pack(pady=10)
Label(encrypt_frame, text="Ihr Text:").pack(pady=5)
encrypt_input = Entry(encrypt_frame, width=40)
encrypt_input.pack(pady=5)
Button(encrypt_frame, text="Verschlüsseln", command=lambda: print("Verschlüsselter Text:", encrypt_input.get())).pack(pady=10)

# Decrypt page
decrypt_frame = Frame(window)
Label(decrypt_frame, text="Text entschlüsseln", font=('Calibri', 14)).pack(pady=10)
Label(decrypt_frame, text="Verschlüsselter Text:").pack(pady=5)
decrypt_input = Entry(decrypt_frame, width=40)
decrypt_input.pack(pady=5)
Button(decrypt_frame, text="Entschlüsseln", command=lambda: print("Entschlüsselter Text:", decrypt_input.get())).pack(pady=10)

# Show the initial page
intro_frame.pack(fill="both", expand=True)

window.mainloop()

How It Works: #

• Frames as Pages: Each option gets its own Frame that holds all the UI elements (labels, inputs, buttons) for that function. This keeps your code clean and makes switching straightforward.
• Variable Trace: The variable.trace_add("write", switch_page) line listens for changes to the OptionMenu's selected value. Every time the user picks a new option, it triggers the switch_page function.
• Toggle Visibility: The switch_page function first hides all frames with pack_forget(), then shows only the frame that matches the selected option using pack(). The fill="both", expand=True ensures each page takes up the full window space when active.

You can easily customize each frame's content—add more widgets, styling, or your actual encryption/decryption logic—to fit your needs!

内容的提问来源于stack exchange，提问作者Dimilo