纯净、安全、绿色的下载网站

首页|软件分类|下载排行|最新软件|IT学院

当前位置:首页IT学院IT技术

Tkinter库制作记事本 教你怎样使用Python Tkinter库制作记事本

allway2   2021-06-10 我要评论
想了解教你怎样使用Python Tkinter库制作记事本的相关内容吗allway2在本文为您仔细讲解Tkinter库制作记事本的相关知识和一些Code实例欢迎阅读和指正我们先划重点:Tkinter库制作记事本,Python,Tkinter库下面大家一起来学习吧

Tkinter库制作记事本

现在为了创建这个记事本你的系统中应该已经安装了 Python 3 和 Tkinter您可以根据系统要求下载合适的python 包成功安装 python 后您需要安装 Tkinter(一个 Python 的 GUI 包)

使用此命令安装 Tkinter :

pip install python-tk

导入 Tkinter :

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

注意: messagebox用于在称为记事本的白框中写入消息filedialog用于在您从系统中的任何位置打开文件或将文件保存在特定位置或位置时出现的对话框

添加菜单:

# Add controls(widget) 
  
self.__thisTextArea.grid(sticky = N + E + S + W) 
  
# To open new file 
self.__thisFileMenu.add_command(label = "New", 
                                command = self.__newFile) 
  
# To open a already existing file 
self.__thisFileMenu.add_command(label = "Open", 
                                command = self.__openFile) 
  
# To save current file 
self.__thisFileMenu.add_command(label = "Save", 
                                command = self.__saveFile) 
  
# To create a line in the dialog 
self.__thisFileMenu.add_separator() 
  
# To terminate 
self.__thisFileMenu.add_command(label = "Exit", 
                                command = self.__quitApplication) 
self.__thisMenuBar.add_cascade(label = "File", 
                               menu = self.__thisFileMenu) 
  
# To give a feature of cut 
self.__thisEditMenu.add_command(label = "Cut", 
                                command = self.__cut) 
  
# To give a feature of copy 
self.__thisEditMenu.add_command(label = "Copy", 
                                command = self.__copy) 
  
# To give a feature of paste 
self.__thisEditMenu.add_command(label = "Paste", 
                                command = self.__paste) 
  
# To give a feature of editing 
self.__thisMenuBar.add_cascade(label = "Edit", 
                               menu = self.__thisEditMenu) 
  
# To create a feature of description of the notepad 
self.__thisHelpMenu.add_command(label = "About Notepad", 
                                command = self.__showAbout) 
self.__thisMenuBar.add_cascade(label = "Help", 
                               menu = self.__thisHelpMenu) 
  
self.__root.config(menu = self.__thisMenuBar) 
  
self.__thisScrollBar.pack(side = RIGHT, fill = Y) 
  
# Scrollbar will adjust automatically 
# according to the content 
self.__thisScrollBar.config(command = self.__thisTextArea.yview) 
self.__thisTextArea.config(yscrollcommand = self.__thisScrollBar.set) 

使用此代码我们将在记事本的窗口中添加菜单并向其中添加复制、粘贴、保存等内容

添加功能:

def __quitApplication(self): 
    self.__root.destroy() 
    # exit() 
  
def __showAbout(self): 
    showinfo("Notepad", "Mrinal Verma") 
  
def __openFile(self): 
          
    self.__file = askopenfilename(defaultextension=".txt", 
                                  filetypes=[("All Files","*.*"), 
                                      ("Text Documents","*.txt")]) 
  
    if self.__file == "": 
  
        # no file to open 
        self.__file = None
    else: 
        # try to open the file 
        # set the window title 
        self.__root.title(os.path.basename(self.__file) + " - Notepad") 
        self.__thisTextArea.delete(1.0,END) 
  
        file = open(self.__file,"r") 
  
        self.__thisTextArea.insert(1.0,file.read()) 
  
        file.close() 
  
          
def __newFile(self): 
    self.__root.title("Untitled - Notepad") 
    self.__file = None
    self.__thisTextArea.delete(1.0,END) 
  
def __saveFile(self): 
  
    if self.__file == None: 
        #save as new file 
        self.__file = asksaveasfilename(initialfile='Untitled.txt', 
                                        defaultextension=".txt", 
                                        filetypes=[("All Files","*.*"), 
                                            ("Text Documents","*.txt")]) 
  
        if self.__file == "": 
            self.__file = None
        else: 
              
            # try to save the file 
            file = open(self.__file,"w") 
            file.write(self.__thisTextArea.get(1.0,END)) 
            file.close() 
            # change the window title 
            self.__root.title(os.path.basename(self.__file) + " - Notepad") 
                  
              
    else: 
        file = open(self.__file,"w") 
        file.write(self.__thisTextArea.get(1.0,END)) 
        file.close() 
  
def __cut(self): 
    self.__thisTextArea.event_generate("<<Cut>>") 
  
def __copy(self): 
    self.__thisTextArea.event_generate("<<Copy>>") 
  
def __paste(self): 
    self.__thisTextArea.event_generate("<<Paste>>") 

在这里我们添加了记事本中所需的所有功能您也可以添加其他功能例如字体大小、字体颜色、粗体、下划线等

合并后的主要代码:

import tkinter
import os
from tkinter import *
from tkinter.messagebox import *
from tkinter.filedialog import *
 
 
class Notepad:
    __root = Tk()
 
    # default window width and height
    __thisWidth = 300
    __thisHeight = 300
    __thisTextArea = Text(__root)
    __thisMenuBar = Menu(__root)
    __thisFileMenu = Menu(__thisMenuBar, tearoff=0)
    __thisEditMenu = Menu(__thisMenuBar, tearoff=0)
    __thisHelpMenu = Menu(__thisMenuBar, tearoff=0)
 
    # To add scrollbar
    __thisScrollBar = Scrollbar(__thisTextArea)
    __file = None
 
    def __init__(self, **kwargs):
 
        # Set icon
        try:
            self.__root.wm_iconbitmap("Notepad.ico")
        except:
            pass
 
        # Set window size (the default is 300x300)
 
        try:
            self.__thisWidth = kwargs['width']
        except KeyError:
            pass
 
        try:
            self.__thisHeight = kwargs['height']
        except KeyError:
            pass
 
        # Set the window text
        self.__root.title("Untitled - Notepad")
 
        # Center the window
        screenWidth = self.__root.winfo_screenwidth()
        screenHeight = self.__root.winfo_screenheight()
 
        # For left-alling
        left = (screenWidth / 2) - (self.__thisWidth / 2)
 
        # For right-allign
        top = (screenHeight / 2) - (self.__thisHeight / 2)
 
        # For top and bottom
        self.__root.geometry('%dx%d+%d+%d' % (self.__thisWidth,
                                              self.__thisHeight,
                                              left, top))
 
        # To make the textarea auto resizable
        self.__root.grid_rowconfigure(0, weight=1)
        self.__root.grid_columnconfigure(0, weight=1)
 
        # Add controls (widget)
        self.__thisTextArea.grid(sticky=N + E + S + W)
 
        # To open new file
        self.__thisFileMenu.add_command(label="New",
                                        command=self.__newFile)
 
        # To open a already existing file
        self.__thisFileMenu.add_command(label="Open",
                                        command=self.__openFile)
 
        # To save current file
        self.__thisFileMenu.add_command(label="Save",
                                        command=self.__saveFile)
 
        # To create a line in the dialog
        self.__thisFileMenu.add_separator()
        self.__thisFileMenu.add_command(label="Exit",
                                        command=self.__quitApplication)
        self.__thisMenuBar.add_cascade(label="File",
                                       menu=self.__thisFileMenu)
 
        # To give a feature of cut
        self.__thisEditMenu.add_command(label="Cut",
                                        command=self.__cut)
 
        # to give a feature of copy
        self.__thisEditMenu.add_command(label="Copy",
                                        command=self.__copy)
 
        # To give a feature of paste
        self.__thisEditMenu.add_command(label="Paste",
                                        command=self.__paste)
 
        # To give a feature of editing
        self.__thisMenuBar.add_cascade(label="Edit",
                                       menu=self.__thisEditMenu)
 
        # To create a feature of description of the notepad
        self.__thisHelpMenu.add_command(label="About Notepad",
                                        command=self.__showAbout)
        self.__thisMenuBar.add_cascade(label="Help",
                                       menu=self.__thisHelpMenu)
 
        self.__root.config(menu=self.__thisMenuBar)
 
        self.__thisScrollBar.pack(side=RIGHT, fill=Y)
 
        # Scrollbar will adjust automatically according to the content
        self.__thisScrollBar.config(command=self.__thisTextArea.yview)
        self.__thisTextArea.config(yscrollcommand=self.__thisScrollBar.set)
 
    def __quitApplication(self):
        self.__root.destroy()
        # exit()
 
    def __showAbout(self):
        showinfo("Notepad", "Mrinal Verma")
 
    def __openFile(self):
 
        self.__file = askopenfilename(defaultextension=".txt",
                                      filetypes=[("All Files", "*.*"),
                                                 ("Text Documents", "*.txt")])
 
        if self.__file == "":
 
            # no file to open
            self.__file = None
        else:
 
            # Try to open the file
            # set the window title
            self.__root.title(os.path.basename(self.__file) + " - Notepad")
            self.__thisTextArea.delete(1.0, END)
 
            file = open(self.__file, "r")
 
            self.__thisTextArea.insert(1.0, file.read())
 
            file.close()
 
    def __newFile(self):
        self.__root.title("Untitled - Notepad")
        self.__file = None
        self.__thisTextArea.delete(1.0, END)
 
    def __saveFile(self):
 
        if self.__file == None:
            # Save as new file
            self.__file = asksaveasfilename(initialfile='Untitled.txt',
                                            defaultextension=".txt",
                                            filetypes=[("All Files", "*.*"),
                                                       ("Text Documents", "*.txt")])
 
            if self.__file == "":
                self.__file = None
            else:
 
                # Try to save the file
                file = open(self.__file, "w")
                file.write(self.__thisTextArea.get(1.0, END))
                file.close()
 
                # Change the window title
                self.__root.title(os.path.basename(self.__file) + " - Notepad")
 
 
        else:
            file = open(self.__file, "w")
            file.write(self.__thisTextArea.get(1.0, END))
            file.close()
 
    def __cut(self):
        self.__thisTextArea.event_generate("<<Cut>>")
 
    def __copy(self):
        self.__thisTextArea.event_generate("<<Copy>>")
 
    def __paste(self):
        self.__thisTextArea.event_generate("<<Paste>>")
 
    def run(self):
 
        # Run main application
        self.__root.mainloop()
 
    # Run main application
 
 
notepad = Notepad(width=600, height=400)
notepad.run()

要运行此代码请使用扩展名.py保存它然后打开 cmd(命令提示符)并移动到保存文件的位置然后编写以下内容

python "filename".py 

然后按回车它就会运行或者可以通过简单地双击您的.py扩展文件直接运行


相关文章

猜您喜欢

网友评论

Copyright 2020 www.fresh-weather.com 【世纪下载站】 版权所有 软件发布

声明:所有软件和文章来自软件开发商或者作者 如有异议 请与本站联系 点此查看联系方式