65 lines
1.9 KiB
Markdown
65 lines
1.9 KiB
Markdown
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# Tkinter 复选框
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> 原文： [https://pythonbasics.org/tkinter_checkbox/](https://pythonbasics.org/tkinter_checkbox/)
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复选框小部件非常明显，您根本无需考虑它们。 它们就像开/关开关，您可以有多个开关。 它是 Tkinter 中包含的小部件之一。
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如果您希望单击零个或多个选项，则可以使用一个复选框。 否则，您将使用单选按钮或其他类型的按钮。
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## 复选框
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### Tkinter 复选框
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Tkinter 复选框小部件是一个非常基本的开关。 Tkinter 中的复选框称为`CheckButton`。 您可以添加两个复选框，如下所示：
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```py
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c1 = tk.Checkbutton(window, text='Python',variable=var1, onvalue=1, offvalue=0, command=print_selection)
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c1.pack()
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c2 = tk.Checkbutton(window, text='C++',variable=var2, onvalue=1, offvalue=0, command=print_selection)
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c2.pack()
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```
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### 示例
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下面的程序在窗口中添加了几个检查按钮。 如果单击复选框，则上面的文本会更改。
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```py
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import tkinter as tk
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window = tk.Tk()
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window.title('My Window')
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window.geometry('100x100')
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l = tk.Label(window, bg='white', width=20, text='empty')
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l.pack()
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def print_selection():
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if (var1.get() == 1) & (var2.get() == 0):
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l.config(text='I love Python ')
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elif (var1.get() == 0) & (var2.get() == 1):
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l.config(text='I love C++')
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elif (var1.get() == 0) & (var2.get() == 0):
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l.config(text='I do not anything')
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else:
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l.config(text='I love both')
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var1 = tk.IntVar()
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var2 = tk.IntVar()
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c1 = tk.Checkbutton(window, text='Python',variable=var1, onvalue=1, offvalue=0, command=print_selection)
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c1.pack()
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c2 = tk.Checkbutton(window, text='C++',variable=var2, onvalue=1, offvalue=0, command=print_selection)
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c2.pack()
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window.mainloop()
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```
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[下载 Tkinter 示例](https://gum.co/ErLc)
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