Python：更改帧根的颜色.configure(background='red')不起作用

Question

我正在 tkinter 中制作一个多窗口 GUI，我想更改 gui 的背景颜色。我已经尝试了多种建议的解决方案，但它们不起作用。例如 root.configure（background='red'）。这也不起作用：http://www.java2s.com/Code/Python/GUI-Tk/SetFramebackgroundcolor.htm

import tkinter as tk
from tkinter import *
from tkinter import ttk
LARGE_FONT = ("Verdana", 12)
def loadmsg(msg):
    popupload.fileName = filedialog.askopenfilename(filetypes=(("textfiler", ".txt"), ("Alla filer", ".*")))

class Dod(tk.Tk):
    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
        tk.Tk.wm_title(self, "GUi")
        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand=True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)
        self.frames = {}
        for F in (StartPage, PageOne):
            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky="nsew")
        self.show_frame(StartPage)
    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()

class StartPage(tk.Frame):
    def __init__(self, parent, controller):
        ttk.Frame.__init__(self, parent)
        label = ttk.Label(self, text="GUI", font=LARGE_FONT)
        label.pack(pady=10, padx=10)
        button = ttk.Button(self, text="Visit Page One",
                            command=lambda: controller.show_frame(PageOne))

        button2 = ttk.Button(self, text="Ok",
                             command=lambda: controller.label2)
        button.pack()
        button2.pack()

class PageOne(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        label = ttk.Label(self, text="Page One", font=LARGE_FONT)
        label.pack(pady=10, padx=10)
        button1 = ttk.Button(self, text="Back to Home",
                             command=lambda: controller.show_frame(StartPage))
        button1.pack()
root = Dod()
root.geometry("800x400")
root.mainloop()

Answer 1

这很容易...

您需要做的就是在类 Dod（tk.Tk） 在参数 container.grid_columnconfigure（0， 权重=1） 之后。然后，在 self.frames[F]=frame 之后添加 frame.config（bg="black"），在循环中为 F in （start1，start，P1，P2）。[这将为循环中的所有帧提供黑色]代码如下：

import tkinter as tk
from tkinter import *
from tkinter import ttk
LARGE_FONT = ("Verdana", 12)
def loadmsg(msg):
    popupload.fileName = filedialog.askopenfilename(filetypes=(("textfiler",    ".txt"), ("Alla filer", ".*")))

class Dod(tk.Tk):
    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
        tk.Tk.wm_title(self, "GUi")
        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand=True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)
        F1.config()
        self.frames = {}
        for F in (StartPage, PageOne):
            frame = F(container, self)
            self.frames[F] = frame
            frame.config(bg="black")
            frame.grid(row=0, column=0, sticky="nsew")
        self.show_frame(StartPage)
    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()

class StartPage(tk.Frame):
    def __init__(self, parent, controller):
        ttk.Frame.__init__(self, parent)
        label = ttk.Label(self, text="GUI", font=LARGE_FONT)
        label.pack(pady=10, padx=10)
        button = ttk.Button(self, text="Visit Page One",
                        command=lambda: controller.show_frame(PageOne))

        button2 = ttk.Button(self, text="Ok",
                         command=lambda: controller.label2)
        button.pack()
        button2.pack()

class PageOne(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        label = ttk.Label(self, text="Page One", font=LARGE_FONT)
        label.pack(pady=10, padx=10)
        button1 = ttk.Button(self, text="Back to Home",
                         command=lambda: controller.show_frame(StartPage))
        button1.pack()
root = Dod()
root.geometry("800x400")
root.mainloop()