Python Tkinter:如何设置 ttk.Radiobutton 激活并获取其值?
声明:本页面是StackOverFlow热门问题的中英对照翻译,遵循CC BY-SA 4.0协议,如果您需要使用它,必须同样遵循CC BY-SA许可,注明原文地址和作者信息,同时你必须将它归于原作者(不是我):StackOverFlow
原文地址: http://stackoverflow.com/questions/18708172/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Tkinter: How to set ttk.Radiobutton activated and get its value?
提问by minerals
1) I need to set one of my three ttk.Radiobuttons activated by default
when I start my gui app.
How do I do it?
1)当我启动我的 gui 应用程序时,我需要设置我的三个 ttk.Radiobuttons 中的一个默认激活。
我该怎么做?
2) I also need to check if one of my ttk.Radiobuttons was
activated/clicked by the user.
How do I do it?
2)我还需要检查我的 ttk.Radiobuttons 之一是否被用户激活/点击。
我该怎么做?
rb1 = ttk.Radiobutton(self.frame, text='5', variable=self.my_var, value=5)
rb2 = ttk.Radiobutton(self.frame, text='10', variable=self.my_var, value=10)
rb3 = ttk.Radiobutton(self.frame, text='15', variable=self.my_var, value=15)
self.rb1.grid(row=0)
self.rb2.grid(row=1)
self.rb3.grid(row=2)
采纳答案by Alok
use self.my_var.set(1)
to set the radiobutton with text='5'
as the default RadioButton.
用于self.my_var.set(1)
将text='5'
单选按钮设置为默认 RadioButton。
To get the selected one you have to call a function
要获得选定的一个,您必须调用一个函数
rb1 = ttk.Radiobutton(self.frame, text='5', variable=self.my_var, value=5,command=self.selected)
rb2 = ttk.Radiobutton(self.frame, text='10', variable=self.my_var, value=10,command=self.selected)
rb3 = ttk.Radiobutton(self.frame, text='15', variable=self.my_var, value=15,command=self.selected)
self.rb1.grid(row=0)
self.rb2.grid(row=1)
self.rb3.grid(row=2)
def selected(self):
if self.my_var.get()==5:
"do something"
elif self.my_var.get()==10:
"do something"
else:
"do something"
回答by Aaditya M Nair
You can use rb1.state['selected']
to set the default as rb1
and self.my_var.get()
to get the value (i.e the text variable) of the radiobutton.
您可以使用rb1.state['selected']
将默认值设置为rb1
并self.my_var.get()
获取单选按钮的值(即文本变量)。
回答by fbmd
As for your first question, a convenient and straightforward way is to call the invoke
method:
至于你的第一个问题,一个方便直接的方法是调用invoke
方法:
rb2.invoke()
Note that this also runs any command
associated with this button.
请注意,这也会运行command
与此按钮相关的任何内容。
回答by Sébastien S.
I'm just adding something to Gogo's answer but i can't comment because i don't have enough reputation.
我只是在 Gogo 的回答中添加了一些内容,但我无法发表评论,因为我没有足够的声誉。
Add self.my_var=tk.IntVar()
before the radiobuttons or your program will not know the variable. see The Variable Classesfor more informations
self.my_var=tk.IntVar()
在单选按钮之前添加,否则您的程序将不知道该变量。有关更多信息,请参阅变量类
for exemple, in my case i need a StringVar():
this works for python 3.* change tkinter
to Tkinter
for python 2 (i'm not 100% sure tho)
对于为例,在我来说,我需要一个STRINGVAR():该作品蟒蛇3. *的变化tkinter
,以Tkinter
用于Python 2(我不是100%肯定寿)
import tkinter as tk
from tkinter import ttk
class XFile_Page(tk.Frame):
...
self.joinType = tk.StringVar()
self.rbLeft = ttk.Radiobutton(self.frameRadioButtons, text='left', variable=self.joinType, value='left',command=self.RadioBtnSelected)
self.rbRight = ttk.Radiobutton(self.frameRadioButtons, text='right', variable=self.joinType, value='right',command=self.RadioBtnSelected)
self.rbLeft.grid(row=0)
self.rbRight.grid(row=1)
#select the rbLeft radiobutton
self.rbLeft.invoke()
def RadioBtnSelected(self):
print(self.joinType.get())