如何设置ttk.Combobox的背景颜色 [英] How to set the background color of a ttk.Combobox

问题描述

我有一个问题，使用tkinter ttk使用'vista'主题（我使用Python 3）为Combobox设置背景颜色。我已尝试过此处的代码 ttk 。当状态为只读和离焦时，Combobox故障

 导入tkinter为tk 
 tkinter import ttk 
 
 root = tk.Tk（）
 combo = ttk.Combobox（root，values = ['1'，'2'，'3']）
 combo ['state'] ='readonly'
 combo.pack（）
 tk.Entry（root）.pack（）
 
 style = ttk.Style $ b style.map（'TCombobox'，selectbackground = [（'readonly'，'red'）]）
＃style.map（'TCombobox'，fieldbackground = ）#not working as well 
  

但这将只改变文本的背景，组合框的其余部分。此外，我在tcl论坛上看到了一条信息： http://wiki.tcl.tk/15780 和我've tried with'fieldbackground'但似乎tkinter忽略此参数。你有什么想法如何解决呢？也许有一种方法来配置特定主题的特定样式？

解决方案

此代码如下所示

 
 code> style = ttk.Style（）
 
 style.map（'TCombobox'，fieldbackground = [（'readonly'，'white'）]）
 style.map 'TCombobox'，selectbackground = [（'readonly'，'white'）]）
 style.map（'TCombobox'，selectforeground = [（'readonly'，'black'）]）
 
 self.mycombo = ttk.Combobox（self.frame，textvariable = self.combo_var，
 height = 15，justify ='left'，width = 21，
 values = lista）
 
 self.mycombo ['state'] ='readonly'＃根据配置颜色设置状态
 self.mycombo.bind（'<< ComboboxSelected>>'，
 lambda event：self._click_combo（））
  

`

I have a problem to set background color for Combobox using tkinter ttk with 'vista' theme (I'm using Python 3). I've tried code from here ttk.Combobox glitch when state is read-only and out of focus

import tkinter as tk
from tkinter import ttk

root = tk.Tk()
combo = ttk.Combobox(root, values=['1', '2', '3'])
combo['state'] = 'readonly'
combo.pack()
tk.Entry(root).pack()

style = ttk.Style()
style.map('TCombobox', selectbackground=[('readonly', 'red')])
#style.map('TCombobox', fieldbackground=[('readonly', 'blue')]) #not working as well

But this will change only background for text, rest part of combobox rests white. Also I saw a post on the tcl forum: http://wiki.tcl.tk/15780 and I've tried with 'fieldbackground' but it seems that tkinter ignores this parameter. Do you have any idea how to solve it? Maybe there is a way to configure only specific style in specific theme? I saw that for 'default' theme, the background changes to gray color if state is 'readonly'.

解决方案

This code below worked fine for me.It is important set the order of the parameters.

`

    style = ttk.Style()

    style.map('TCombobox', fieldbackground=[('readonly','white')])
    style.map('TCombobox', selectbackground=[('readonly', 'white')])
    style.map('TCombobox', selectforeground=[('readonly', 'black')])

    self.mycombo = ttk.Combobox(self.frame,textvariable=self.combo_var,
                                height=15,justify='left',width=21,
                                values=lista)

    self.mycombo['state'] = 'readonly' # Set the state according to configure colors
    self.mycombo.bind('<<ComboboxSelected>>',
                      lambda event: self._click_combo())

`

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