tkinter ttk 小部件忽略背景颜色? [英] tkinter ttk widgets ignoring background color?

问题描述

我正在为应用程序使用 tkinter 的主题 (ttk) GUI 工具包.尝试对主窗口中的小部件应用一些统一的样式:

I'm using tkinter's themed (ttk) GUI toolkit for an application. Trying to apply some uniform styling to the widgets in the main window:

s = ttk.Style()
s.configure('.', background='#eeeeee')
s.configure('.', font=('Helvetica', 14))
self.configure(background='#eeeeee')

字体更改效果很好，但由于某种原因，小部件(即 ttk.Label 和 ttk.Button)似乎没有反映背景更改，这由于窗口背景和小部件之间的对比，在视觉上非常明显.如果我检查它的设置:

The font change works great, but for some reason the widgets (i.e. ttk.Label and ttk.Button) don't seem to reflect the background change, which is pretty obvious visually due to contrast between the window's background and the widget's. If I check what it's set to:

label1.cget('background')

它返回 ''，所以很明显它没有被设置，但我不明白给定 ttk.Label 和 样式.尝试直接为单个标签设置背景:

it returns '', so clearly it's not being set, but I don't understand what's wrong given the docs for ttk.Label and styles. Trying to set the background for a single label directly:

label1.configure(background='#eeeeee')

也不起作用(即没有变化).有什么想法吗?

also doesn't work (i.e. no change). Any ideas?

推荐答案

我也遇到了这个问题，我相信问题是 ttk 的aqua"主题，这是 OSX 上的默认主题，不尊重背景颜色在许多小部件中进行配置.我通过将主题设置为默认"解决了这个问题，这立即导致所有小部件的背景按指定显示.

I was having this problem as well, and I believe the issue is ttk's "aqua" theme, which is the default on OSX, doesn't respect background colour configuration in a number of widgets. I solved the problem by setting the theme to "default", which immediately caused all widgets' backgrounds to appear as specified.

这是我的基本示例:

import tkinter
from tkinter import ttk

root = tkinter.Tk()
style = ttk.Style(root)
style.theme_use('classic')
style.configure('Test.TLabel', background= 'red')
text = ttk.Label(root, text= 'Hello', style= 'Test.TLabel')
text.grid()
root.mainloop()

尝试将 style.theme_use('classic') 更改为 style.theme_use('aqua') 以查看问题.

Try changing style.theme_use('classic') to style.theme_use('aqua') to see the issue.

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