备忘录小程序设计 代码

好的，下面是一个简单的备忘录小程序设计代码，使用的是Python语言和Tkinter库。

import tkinter as tk
from tkinter import messagebox

class MemoApp:
    def __init__(self, master):
        self.master = master
        self.master.title("备忘录")
        self.master.geometry("400x400")

        self.memo_listbox = tk.Listbox(self.master, height=20)
        self.memo_listbox.pack(pady=20)

        self.add_button = tk.Button(self.master, text="添加备忘", command=self.add_memo)
        self.add_button.pack(pady=10)

        self.delete_button = tk.Button(self.master, text="删除备忘", command=self.delete_memo)
        self.delete_button.pack(pady=10)

        self.save_button = tk.Button(self.master, text="保存备忘", command=self.save_memo)
        self.save_button.pack(pady=10)

        self.load_button = tk.Button(self.master, text="加载备忘", command=self.load_memo)
        self.load_button.pack(pady=10)

        self.memo_dict = {}

    def add_memo(self):
        memo = tk.simpledialog.askstring("添加备忘", "请输入备忘内容：")
        if memo:
            self.memo_listbox.insert(tk.END, memo)
            self.memo_dict[memo] = 1

    def delete_memo(self):
        try:
            memo = self.memo_listbox.get(self.memo_listbox.curselection())
            self.memo_listbox.delete(tk.ACTIVE)
            del self.memo_dict[memo]
        except:
            messagebox.showerror("错误", "请选择要删除的备忘！")

    def save_memo(self):
        with open("memo.txt", "w") as f:
            for memo in self.memo_dict.keys():
                f.write(memo + "\n")
        messagebox.showinfo("提示", "备忘已保存！")

    def load_memo(self):
        try:
            with open("memo.txt", "r") as f:
                for memo in f.readlines():
                    memo = memo.strip()
                    self.memo_listbox.insert(tk.END, memo)
                    self.memo_dict[memo] = 1
            messagebox.showinfo("提示", "备忘已加载！")
        except:
            messagebox.showerror("错误", "备忘加载失败！")

root = tk.Tk()
app = MemoApp(root)
root.mainloop()

这个小程序中，我们使用了Tkinter库来创建图形用户界面。程序包含了添加备忘、删除备忘、保存备忘和加载备忘等功能。备忘数据会保存到本地的memo.txt文件中。