Python ttkwidget表更改列宽时如何绑定事件

from tkinter import ttk
import tkinter as tk

root = tk.Tk()
table = ttk.Treeview(root)
table['columns'] = ('column1', 'column2', 'column3')
table.column('column1', width=100)
table.column('column2', width=100)
table.column('column3', width=100)

def resize_column(event):
    column = event.widget.identify_column(event.x)
    table.column(column, width=200)  # 将列宽更改为200

table.bind('<B1-Motion>', resize_column)