'''
主题：tk学习
内容：ListBox 列表部件
时间：2021/10/18
'''
import tkinter as tk
window = tk.Tk()
window.title('my window')
window.geometry('200x300')
var1 = tk.StringVar()
l = tk.Label(window,bg='yellow',width=4,
textvariable=var1
)
l.pack()
def print_selection():
temp = lb.get(lb.curselection()) #curse其实是咒语，在这里代表cursor光标
var1.set(temp)
b = tk.Button(window,text='print selection',
width=15,height=2,
command=print_selection
)
b.pack()
var2 = tk.StringVar()
var2.set((11,22,33,44))
lb = tk.Listbox(window,listvariable=var2)
list_items=[1,2,3,4]
for item in list_items:
lb.insert('end',item)
lb.insert(0,'first')
lb.insert(1,'second')
lb.delete(1)
lb.pack()
window.mainloop()
'''
主题：tk学习
内容：Radiobutton 选择按钮
时间：2021/10/18
'''
import tkinter as tk
window = tk.Tk()
window.title('my window')
window.geometry('200x200')
var = tk.StringVar()
l = tk.Label(window,bg='yellow',width=20,text='empty')
l.pack()
def print_selection():
l.config(text='you hava selected '+var.get()) #变量设置用set方法，获取用get方法
r1 = tk.Radiobutton(window,text='Option A',
variable=var,value='A', #选择这个button时,value的值会赋值给variable的var
command=print_selection
)
r2 = tk.Radiobutton(window,text='Option B',
variable=var,value='B',
command=print_selection
)
r3 = tk.Radiobutton(window,text='Option C',
variable=var,value='C',
command=print_selection
)
r1.pack()
r2.pack()
r3.pack()
window.mainloop()
'''
主题：tk学习
内容：Scale 尺度
时间：2021/10/18
'''
import tkinter as tk
window = tk.Tk()
window.title('my window')
window.geometry('200x200')
l = tk.Label(window,bg='yellow',width=20,text='empty')
l.pack()
def print_selection(v):
l.config(text='you hava selected '+v)
s = tk.Scale(window,label='try me',
from_=5,to=11,
orient=tk.HORIZONTAL, #orient朝向 HORIZONTAL横的 水平
#这里的length和width和height不同，这里是像素大小，而后者是字符高度宽度
length=200,showvalue=1,tickinterval=2, # tickinterval 数字显示间隔
resolution=0.01, #选择的数值保留两位小数点
command=print_selection #Scale会自动传入一个当前选中值的参数进去
)
s.pack()
window.mainloop()
