python写一个简单的图形化记事本

摘要：桌面编程此程序使用工具完成，首先创建一个项目，然后创建一个文件作者信息本软件由君惜完成版权信息本软件版权为君惜所有未命名文件未命名重做撤销查找创建菜单文件菜单新建打开保存另存为文件关联编辑菜单撤销重做剪切复制粘贴查找全选编辑关于作者版权关

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = "junxi"

from tkinter import *
from tkinter.messagebox import *
from tkinter.filedialog import *
from tkinter.simpledialog import *
import os

def author():
    showinfo("作者信息", "本软件由君惜完成")

def about():
    showinfo("版权信息.Copyright", "本软件版权为君惜所有")

def openfile():
    global filename
    filename = askopenfilename(defaultextension=".txt")
    if filename == "":
        filename = None
    else:
        root.title("FileName: " + os.path.basename(filename))
        textPad.delete(1.0, END)
        f = open(filename,"r")
        textPad.insert(1.0, f.read())
        f.close()

def new():
    global filename
    root.title("未命名文件")
    textPad.delete(1.0, END)

def save():
    global filename
    try:
        f = open(filename, "w")
        msg = textPad.get(1.0, END)
        f.write(msg)
        f.close()
    except:
        save_as()

def save_as():
    f = asksaveasfilename(initialfile="未命名.txt", defaultextension=".txt")
    global filename
    filename = f
    fh = open(f, "w")
    msg = textPad.get(1.0, END)
    fh.write(msg)
    fh.close()
    root.title("FileName: " + os.path.basename(f))

def cut():
    textPad.event_generate("<>")

def copy():
    textPad.event_generate("<>")

def paste():
    textPad.event_generate("<>")

def redo():     # 重做
    textPad.event_generate("<>")

def undo():     # 撤销
    textPad.event_generate("<>")

def select_all():
    textPad.tag_add("sel", "1.0", END)

def search():
    topsearch = Toplevel(root)
    topsearch.geometry("300x30+200+250")
    label1 = Label(topsearch, text="Find")
    label1.grid(row=0, column=0, padx=5)
    entry1 = Entry(topsearch, width=20)
    entry1.grid(row=0, column=1, padx=5)
    button1 = Button(topsearch, text="查找")
    button1.grid(row=0, column=2, padx=10)

​

root = Tk()
root.title("junxi note")
root.geometry("800x500+100+100")

# 创建菜单
menubar = Menu(root)
root.config(menu = menubar)

# 文件菜单
filemenu = Menu(menubar)
filemenu.add_command(label="新建", accelerator="Ctrl + N", command=new)
filemenu.add_command(label="打开", accelerator="Ctrl + O", command=openfile)
filemenu.add_command(label="保存", accelerator="Ctrl + S", command=save)
filemenu.add_command(label="另存为", accelerator="Ctrl + Shift + S", command=save_as)
menubar.add_cascade(label= "文件", menu = filemenu)       # 关联

# 编辑菜单
editmenu = Menu(menubar)
editmenu.add_command(label="撤销", accelerator="Ctrl + Z", command=undo)
editmenu.add_command(label="重做", accelerator="Ctrl + Y", command=redo)
editmenu.add_separator()
editmenu.add_command(label="剪切", accelerator="Ctrl + X", command=cut)
editmenu.add_command(label="复制", accelerator="Ctrl + C", command=copy)
editmenu.add_command(label="粘贴", accelerator="Ctrl + V", command=paste)
editmenu.add_separator()
editmenu.add_command(label="查找", accelerator="Ctrl + F", command=search)
editmenu.add_command(label="全选", accelerator="Ctrl + A", command=select_all)
menubar.add_cascade(label="编辑", menu = editmenu)

# 关于
aboutmenu = Menu(menubar)
aboutmenu.add_command(label="作者", command=author)
aboutmenu.add_command(label="版权", command=about)
menubar.add_cascade(label="关于", menu = aboutmenu)

# 工具栏
toolbar = Frame(root, height=25, bg="Light sea green")

# 按钮
shortButton = Button(toolbar, text="打开", command=openfile)
shortButton.pack(side=LEFT, padx=5, pady=5)
shortButton = Button(toolbar, text="保存", command=save)
shortButton.pack(side=LEFT)
toolbar.pack(expand=NO, fill=X)         # 显示

# 状态栏
status = Label(root, text="Ln20", bd=1, relief=SUNKEN, anchor=W)
status.pack(side=BOTTOM, fill=X)

# 行号和文本编辑
linelabel = Label(root, width=2, bg="antique white")
linelabel.pack(side=LEFT, fill=Y)
textPad = Text(root, undo=True)
textPad.pack(expand=YES, fill=BOTH)

# 右边滚动下拉条
scroll = Scrollbar(textPad)
textPad.config(yscrollcommand=scroll.set)
scroll.config(command=textPad.yview)
scroll.pack(side=RIGHT, fill=Y)

root.mainloop()