我想制作一個帶有多個視窗的 python tkinter 應用程式。
我希望能夠單擊其中一個視窗 ( message_button) 中的按鈕小部件 ( ) PageOne，并讓它在另一個視窗 ( PageTwo) 中使用標簽小部件列印一條訊息。
我已經用我的message_fun()（見下文）嘗試過，但我只能設法將標簽放在同一個視窗 ( PageOne) 中。
我也嘗試更改self為PageTwoin message_fun()，但這只會給我一條錯誤訊息AttributeError: type object 'PageTwo' has no attribute 'tk'。
謝謝你的幫助！
import tkinter as tk
from tkinter import ttk
class MyPages(tk.Tk):
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 = {}
for F in (PageOne, PageTwo):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(PageOne)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self,parent)
title_label = tk.Label(self, text="This is page one", font=("Verdana", 12))
title_label.pack(pady=10,padx=10)
navigate_button = ttk.Button(self, text="Page Two", command=lambda: controller.show_frame(PageTwo))
navigate_button.pack(side = tk.LEFT)
message_button = ttk.Button(self, text="Message button", command= self.message_fun)
message_button.pack(side = tk.LEFT)
def message_fun(self):
message_label = tk.Label(self, text='I want this message in page two', font=("Verdana", 12))
message_label.pack(side = tk.LEFT)
class PageTwo(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
title_label = tk.Label(self, text="This is page two", font=("Verdana", 12))
title_label.pack(pady=10,padx=10)
navigate_button = ttk.Button(self, text="Page one", command=lambda: controller.show_frame(PageOne))
navigate_button.pack(side = tk.LEFT)
app = MyPages()
app.mainloop()
uj5u.com熱心網友回復：
每個Page都作為第二個引數controller，它可以訪問MyPages和MyPages擁有frames可以訪問所有頁面的權限。
所以你應該首先在__init__keep controlleras self.controller，然后你可以使用self.controller.frames[PageTwo]訪問第一頁中的第二頁。
tk.Label(self.controller.frames[PageTwo], ...
import tkinter as tk
from tkinter import ttk
class MyPages(tk.Tk):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
container = tk.Frame(self)
container.pack(side="top", fill="both", expand = True)
self.frames = {}
for F in (PageOne, PageTwo):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(PageOne)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class PageOne(tk.Frame):
def __init__(self, parent, controller):
super().__init__(parent)
self.controller = controller
title_label = tk.Label(self, text="This is page one", font=("Verdana", 12))
title_label.pack(pady=10,padx=10)
navigate_button = ttk.Button(self, text="Page Two", command=lambda: controller.show_frame(PageTwo))
navigate_button.pack(side = tk.LEFT)
message_button = ttk.Button(self, text="Message button", command= self.message_fun)
message_button.pack(side = tk.LEFT)
def message_fun(self):
message_label = tk.Label(self.controller.frames[PageTwo], text='I want this message in page two', font=("Verdana", 12))
message_label.pack(side = tk.LEFT)
class PageTwo(tk.Frame):
def __init__(self, parent, controller):
super().__init__(parent)
self.controller = controller
title_label = tk.Label(self, text="This is page two", font=("Verdana", 12))
title_label.pack(pady=10,padx=10)
navigate_button = ttk.Button(self, text="Page one", command=lambda: controller.show_frame(PageOne))
navigate_button.pack(side = tk.LEFT)
app = MyPages()
app.mainloop()
``
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