老师你好 按老师的代码敲后 新建文件的时候 选项没有保存,只有打开的选项。没有保存的选项,而且文本类型没有后缀
"""开发记事本软件的菜单
"""
from tkinter.filedialog import *
from tkinter.colorchooser import *
from tkinter.filedialog import *
class Application(Frame):
def __init__(self,master=None):
super().__init__(master)
self.master=master
self.textpad = None
self.pack()
self.createWidget()
def createWidget(self):
#创建主菜单
menubar = Menu(root)
#创建子菜单
menuFile= Menu(menubar)
menuEdit=Menu(menubar)
menuHelp=Menu(menubar)
#将子菜单加入到主菜单栏
menubar.add_cascade(label="文件(F)",menu=menuFile)
menubar.add_cascade(label="编辑(E)",menu=menuEdit)
menubar.add_cascade(label="帮助(H)",menu=menuHelp)
#添加菜单项
menuFile.add_command(label="新建",accelerator="ctrl+n",command=self.newfile)
menuFile.add_command(label="打开",accelerator="ctrl+o",command=self.openfile)
menuFile.add_command(label="保存",accelerator="ctrl+s",command=self.savefile)
menuFile.add_separator() #添加分割线
menuFile.add_command(label="退出",accelerator="crtl+q",command=self.exit)
#将主菜单栏加到根窗口
root["menu"]=menubar
#文本剪辑区
self.textpad=Text(root,width=50,height=30)
self.textpad.pack()
#创建上下菜单
self.contextMenu=Menu(root)
self.contextMenu.add_command(label="背景颜色",command=self.test)
#为右键绑定事件
root.bind("<Button-3>",self.createContextMenu)
def newfile(self):
self.filename=askopenfilename(title="另存为",initialfile="未命名.txt",
filetypes=[("文本文档","*.txt")],
defaultextension="*.txt")
self.savefile()
def openfile(self):
self.textpad.delete("1.0","end")
with askopenfile(title="打开文本文件") as d:
# print(d.read())
self.textpad.insert(INSERT,d.read())
self.filename = d.name
def savefile(self):
with open(self.filename,"w") as d:
c = self.textpad.get(1.0,END)
d.write(c)
def exit(self):
root.quit()
def test(self):
pass
def createContextMenu(self,event):
self.contextMenu.post(event.x_root,event.y_root)
if __name__=='__main__':
root=Tk()
root.geometry("450x300+200+300")
root.title("百战程序员的简易记事本")
app=Application(master=root)
root.mainloop()
代码如上,图片如下
