Tkinter无法用OptionMenu清除.destroy选择

Question

我正在尝试显示一个标签与一个选择的选项从一个定制的OptionMenu。我无法在标签中显示当前选择的内容。我尝试了两种不同的方法，得到了两个不同的错误。

第一个错误是，producesTypeError: on_size_selected()接受了0个位置参数，但给出了1：

import customtkinter
from tkinter import *

customtkinter.set_appearance_mode("System")  
customtkinter.set_default_color_theme("blue")
root = customtkinter.CTk()
size_label = customtkinter.CTkLabel()

size_options = ["Random", "Tiny", "Small", "Medium", "Large", "Huge", "Gargantuan"]
def on_size_selected():
    size_label.destroy() #Issue is here 
    size_label = customtkinter.CTkLabel(root,text=clicked.get())
    size_label.pack()


clicked= customtkinter.StringVar()
size_menu = customtkinter.CTkOptionMenu(root, variable=clicked, values=size_options, command=on_size_selected)
size_menu.pack()

root.mainloop()

第二个错误是str对象没有属性破坏(我也尝试过使用clear，并说了相同的话，但使用了clear)：

import customtkinter
from tkinter import *

customtkinter.set_appearance_mode("System")  
customtkinter.set_default_color_theme("blue")
root = customtkinter.CTk()

size_options = ["Random", "Tiny", "Small", "Medium", "Large", "Huge", "Gargantuan"]
def on_size_selected(size_label):
    size_label.destroy() #Issue is here 
    size_label = customtkinter.CTkLabel(root,text=clicked.get())
    size_label.pack()


clicked= customtkinter.StringVar()
size_menu = customtkinter.CTkOptionMenu(root, variable=clicked, values=size_options, command=on_size_selected)
size_menu.pack()

root.mainloop()

Answer 1

读取CustomTkinter文档。OptionMenu将向命令发送您选择的字符串，并且字符串没有方法破坏。这应该是可行的：

def on_size_selected(choice):
    new_values = [x for x in size_options if x != choice]
    size_menu.configure(values=new_values)
    size_label = customtkinter.CTkLabel(root,text=choice)
    size_label.pack()

请注意，您不需要字符串。

编辑注意到，CustomTkinter模仿tkinter小部件，在本例中，它是tkinter小部件的正常行为，@martineau在评论中指出。因此，您也可以考虑阅读tkinter文档。