我正在尝试去掉周围的白色边框OptionMenu.

我尝试过的

我把颜色改为红色，但周围仍然有白色边框。

有人可以帮忙吗？

这是代码：

from tkinter import *
import tkinter as tk
from tkinter import ttk
root = tk.Tk()
root.geometry('500x500')
var = StringVar()
option = ttk.OptionMenu(root,var,'1','2','3')
option["menu"].config(bg="red")
option.pack()
root.mainloop()

Also, is there a way to change the colour of the OptionMenu trigger box (In the red Circle)?

正如@Mike-SMT 的评论中所述，

您是否考虑过编写自己的选项菜单？

对我来说，这似乎是获得成功的唯一途径OptionMenu没有令人恼火的灰色边框。

这是我的尝试：

import tkinter as tk
root = tk.Tk()
root.geometry('500x500')

class custom_option_menu(tk.Tk):

    def down(self, *menu_items):
        if self.button["text"] == "↓":
            self.frame.place(x = self.x + (len(self.first) * 13)/2, y = self.y + 50, anchor = "center")
            self.button.config(text = "↑")

        elif self.button["text"] == "↑":
            self.frame.place_forget()
            self.button.config(text = "↓")

    def __init__(self, master, first, bg, *menu_items):

        self.master = master
        self.first = first
        self.menu_items = menu_items
        self.bg = bg
        self.frame = tk.Frame(master, height = 100, width = 100)
        self.otherframe = tk.Frame(master, height = 10, width = len(first) * 13)
        self.label = tk.Label(self.otherframe, text = str(first))
        self.button = tk.Button(self.otherframe, text = "↓", command = lambda: self.down(), relief= "flat")
        def save_var(event = "<Button-1>"):
            print(event.widget["text"])
        for i in range(len(self.menu_items)):
            self.frame.config(bg = self.bg)
            self.option = tk.Button(self.frame, text = self.menu_items[i], relief = "flat", bg = self.bg, textvariable = int(i))
            self.option.pack()
            self.option.bind("<Button-1>", save_var)





    def put(self, x, y):
        self.x = x
        self.y = y
        self.button.pack(side = "right")
        self.label.pack()
        self.frame.place(x = x + (len(self.first) * 13)/2, y = y + 50, anchor = "center")

        self.frame.place_forget()
        self.otherframe.place(x = x + (len(self.first) * 13)/2, y = y, anchor = "center")

nice = custom_option_menu(root, "o000000000000000", "blue", "First", "second", "Third")
nice.put(100, 200)
root.mainloop()

遗憾的是，我无法让默认的几何管理器来解决这个问题，所以我创建了.put()。这只是 x 和 y 坐标。

班级的论据custom_option_menu如下：

要打开菜单，请单击向下箭头。

我希望这就是您正在寻找的！