如何更改列表框项目的文本?

2022-01-16 00:00:00 python tkinter listbox

问题描述

我有一个装满项目的 Listbox，我需要更改项目的文本.使用项目配置我只能找出如何更改颜色.

I have a Listbox full of items, and I need to change an item's text. Using item configure I can only find out how to change colors.

如何更改 Tkinter Listbox 上的项目文本?

How can I change the item text on a Tkinter Listbox?

解决方案

要更改文本，您必须删除并在适当的索引处重新添加项目.

To change the text you will have to delete and re-add an item at the proper index.

这是一个人为的例子，它不断更新列表框中的第二项:

Here is a contrived example that continuously updates the second item in the listbox:

import Tkinter as tk
import time

class Example(tk.Frame):
    def __init__(self, parent):
        tk.Frame.__init__(self, parent)

        self.lb = tk.Listbox(self)
        self.lb.pack(fill="both", expand=True)

        self.lb.insert("end", "item 1","the current time", "item 3")

        self.after(1000, self._update_listbox)

    def _update_listbox(self):
        self.lb.delete(1)
        self.lb.insert(1, time.asctime())

        self.after(1000, self._update_listbox)

if __name__ == "__main__":
    root = tk.Tk()
    Example(root).pack(fill="both", expand=True)
    root.mainloop()

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