2019-05-27-tkinter练习-06-Checkbutton 勾选项

import tkinter as tk

# 设置窗口
window = tk.Tk()  # 建立一个窗口
window.title('一个最简单的窗口')
window.geometry('300x200')  # 窗口大小为300x200


l = tk.Label(window,bg="yellow",width=20,text='empty') #这里用text就不行。
#创建一个标签，用来承载输出结果
l.pack()

def print_selection():# Scale标签有一个默认的传入值，
    if(var1.get()==1) & (var2.get()==0):
        l.config(text = 'i love only python')
    elif (var1.get()==0) & (var2.get()==1):
        l.config(text='i love only c++')
    elif (var1.get()==0) & (var2.get()==0):
        l.config(text='i do not love either')
    else:
        l.config(text='i love both')


var1 =tk.IntVar()
var2 =tk.IntVar() #整数的var形式。
c1 = tk.Checkbutton(window,text='python',variable = var1,onvalue=1,offvalue=0,command=print_selection,)

c2 = tk.Checkbutton(window,text='c++',variable = var2,onvalue=1,offvalue=0,command=print_selection,)

c1.pack()
c2.pack()

window.mainloop()