python菜单栏界⾯切换_如何在Tkinter中通过菜单栏⽅法更改
页⾯？
Basically what I'm trying to figure out is, how do I make my menu bar "buttons" change the page?
I've already made the dropdown menu, and the classes with each page. The thing is it works if I create a separate button to change the page, but not when i'm trying to do it through the menu bar?
every tutorial I find is through the buttons, and only the buttons..
I am using python 3.6, with tkinter.
import tkinter as tk
class MyApp(tk.Tk):
美食食谱网页界面ui设计灵感def __init__(self, *args, **kwargs, ):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
container.pack(side="top", fill="both", expand=True)
self.frames = {}
menu = tk.Menu(container)
betting = tk.Menu(menu, tearoff=0)
menu.add_cascade(menu=betting, label="Pages")
betting.add_command(label="PageOne",
command=lambda: controller.show_frame(PageOne))
betting.add_command(label="PageTwo",
command=lambda: controller.show_frame(PageTwo))
fig(self, menu=menu)
for F in (Startpage, PageOne, PageTwo):
frame = F(container, self)
self.frames[F] = frame
self.show_frame(Startpage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class Startpage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Home")
label.pack(pady=10, padx=10)
button1 = tk.Button(self, text="page 1",
command=lambda: controller.show_frame(PageOne)) button1.pack()
button2 = tk.Button(self, text="Page Two",
command=lambda: controller.show_frame(PageTwo)) button2.pack()
# ***** PAGES *****
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Back to Home")
label.pack(pady=10, padx=10)
button1 = tk.Button(self, text="Back to Home", command=lambda: controller.show_frame(Startpage)) button1.pack()
button2 = tk.Button(self, text="Page Two",
command=lambda: controller.show_frame(PageTwo)) button2.pack()
class PageTwo(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Page Two")
label.pack(pady=10, padx=10)
button1 = tk.Button(self, text="Back to Home", command=lambda: controller.show_frame(Startpage)) button1.pack()
button2 = tk.Button(self, text="Page One",
command=lambda: controller.show_frame(PageOne)) button2.pack()
app = MyApp()
app.mainloop()
Now I know, I haven't parsed the "controller & parent", right now, but I've tried and tried, and nothing works 解决⽅案
The controller is MyApp. Within the definition of MyApp that makes controller be self. Thus, you need to call
self.show_frame rather than controller.show_frame.
betting.add_command(label="PageOne",
command=lambda: self.show_frame(PageOne))
betting.add_command(label="PageTwo",
command=lambda: self.show_frame(PageTwo))