我有帶筆記本的 Tkinter 主課：
class MainApplication(tk.Tk):
def __init__(self):
super().__init__()
self.color_widget = '#1B608E'
self.notebook = ttk.Notebook(self)
self.Page1 = Page1(self.notebook)
self.Page2 = Page2(self.notebook)
self.notebook.add(self.Page1, text='PCE Franchisés')
self.notebook.add(self.Page2, text='PVC Franchisés')
對于筆記本的每一頁，我都有一個定義為容器的類：
class Page1(ttk.Frame):
def __init__(self, container):
super().__init__(container)
color = MainApplication.color_widget
self.label_INPUT = tk.Label(self, text='Settings', color=color,
)
self.label_INPUT.place(relx=0.03, rely=0.04)
class Page2(ttk.Frame):
def __init__(self, container):
super().__init__(container)
在每個頁面中，我想獲取 Main 類中定義的變數 color_widget 的值。我試過 MainApplication.color_widegt 但它沒有用。
uj5u.com熱心網友回復：
簡單的方法是將實體傳遞MainApplication給那些頁面，以便這些頁面可以color_widget通過傳遞的實體訪問實體變數：
import tkinter as tk
from tkinter import ttk
class MainApplication(tk.Tk):
def __init__(self):
super().__init__()
self.geometry('800x600')
self.color_widget = '#1B608E'
self.notebook = ttk.Notebook(self)
self.notebook.pack(fill='both', expand=1)
self.Page1 = Page1(self.notebook, self) # pass instance of MainApplication as well
self.Page2 = Page2(self.notebook, self)
self.notebook.add(self.Page1, text='PCE Franchisés')
self.notebook.add(self.Page2, text='PVC Franchisés')
class Page1(ttk.Frame):
# added controller argument
def __init__(self, container, controller):
super().__init__(container)
self.controller = controller
# access MainApplication.color_widget
color = controller.color_widget
self.label_INPUT = tk.Label(self, text='Settings', fg=color)
self.label_INPUT.place(relx=0.03, rely=0.04, anchor='nw')
class Page2(ttk.Frame):
def __init__(self, container, controller):
super().__init__(container)
self.controller = controller
MainApplication().mainloop()
uj5u.com熱心網友回復：
self.color = self.master.master.color_widget
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