ttkbootstrap ScrolledFrame 安全销毁指南

import tkinter as tk
import ttkbootstrap as ttkb
from ttkbootstrap.scrolled import ScrolledFrame
from ttkbootstrap.dialogs import DateEntry

class HomePage:
    def __init__(self, root):
        self.root = root
        for widget in self.root.winfo_children():
            widget.destroy() # 清除旧页面内容
        home_label = ttkb.Label(self.root, text="欢迎来到主页！", font=("Calibri", 24, "bold"), bootstyle="primary")
        home_label.pack(pady=50)
        self.go_to_data_button = ttkb.Button(self.root, text="前往数据输入页", command=self.goToEnterDataPage)
        self.go_to_data_button.pack(pady=20)

    def goToEnterDataPage(self):
        EnterDataPage(self.root)

class EnterDataPage:
    def __init__(self, root):
        self.root = root
        # 在创建新页面前，清除旧页面内容，确保干净切换
        for widget in self.root.winfo_children():
            widget.destroy() 

        self.scrolled_frame = ScrolledFrame(self.root, height=400)
        self.scrolled_frame.pack(fill=tk.X, expand=tk.YES, padx=20, pady=10) # 添加padx/pady以更好展示

        enter_data_frame = ttkb.Frame(self.scrolled_frame, bootstyle="dark", padding=10)
        enter_data_frame.pack(pady=20, fill=tk.X, expand=tk.YES)

        name_label = ttkb.Label(enter_data_frame, text="姓名", font=("Calibri", 14, "bold"), bootstyle="inverse-dark")
        name_label.grid(row=0, column=0, padx=10, pady=5, sticky="w")
        name_entry = ttkb.Entry(enter_data_frame)
        name_entry.grid(row=0, column=1, padx=10, pady=5, sticky="ew")

        date_label = ttkb.Label(enter_data_frame, text="日期", font=("Calibri", 14, "bold"), bootstyle="inverse-dark")
        date_label.grid(row=0, column=2, padx=10, pady=5, sticky="w")
        date_entry = DateEntry(enter_data_frame)
        date_entry.grid(row=0, column=3, padx=10, pady=5, sticky="ew")

        # 模拟更多内容以启用滚动
        for i in range(10):
            ttkb.Label(enter_data_frame, text=f"更多数据 {i+1}", bootstyle="info").grid(row=i+1, column=0, columnspan=4, pady=2, sticky="w")

        add_remove_entry_frame = ttkb.Frame(self.scrolled_frame, bootstyle="dark", padding=10)
        add_remove_entry_frame.pack(pady=10)
        add_button = ttkb.Button(add_remove_entry_frame, text="添加")
        add_button.grid(row=0, column=0, padx=10, pady=10)
        remove_button = ttkb.Button(add_remove_entry_frame, text="移除")
        remove_button.grid(row=0, column=1, padx=10, pady=10)

        self.back_button = ttkb.Button(self.root, text="返回主页", command=self.backToHomePage)
        self.back_button.pack(pady=20)

    def clearPage(self):
        # 正确的销毁方法：销毁ScrolledFrame的外部容器
        if self.scrolled_frame and self.scrolled_frame.container:
            self.scrolled_frame.container.destroy()
        # 销毁其他页面专属的控件
        if self.back_button:
            self.back_button.destroy()

    def backToHomePage(self):
        self.clearPage()
        HomePage(self.root)

if __name__ == "__main__":
    app = ttkb.Window(themename="superhero")
    app.title("ttkbootstrap ScrolledFrame 销毁示例")
    app.geometry("800x600")

    HomePage(app) # 初始加载主页

    app.mainloop()

def clearPage(self):
    # 销毁ScrolledFrame的外部容器，这是关键
    if self.scrolled_frame and self.scrolled_frame.container:
        self.scrolled_frame.container.destroy()
    # 销毁页面上其他需要被移除的控件
    if self.back_button:
        self.back_button.destroy()