Tkinter极简实例（2020-08-12）——Entry篇_from tkinter import * root = tk() en = entry(root,

Tkinter Entry

Entry极简实例

from tkinter import *

root = Tk()

Entry(root, text='input your text here').pack()  # text毫无作用

root.mainloop()
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Entry与变量

from tkinter import *

root = Tk()

e = StringVar()

entry = Entry(root, textvariable=e)
e.set('entry your text here')  # 设定初始文本
entry.pack()

root.mainloop()
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Entry设置只读

from tkinter import *

root = Tk()

e = StringVar()

entry = Entry(root, textvariable=e, state='readonly')
e.set('entry your text here')
entry.pack()

root.mainloop()
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密码输入框

from tkinter import *

root = Tk()

Label(root, text='input your password below').pack()

e = StringVar()

entry = Entry(root, textvariable=e, show='*')
entry.pack()

root.mainloop()
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前景色/背景色/外观/宽度/高度/对齐方式/状态与Lable相同。

Tkinter CheckButton

多选按钮，可以表示两种状态：On或Off，可以设置回调函数，每当点击此按钮时回调函数被调用。

CheckButton极简例子

from tkinter import *

root = Tk()

Checkbutton(root, text='python').pack()

root.mainloop()
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CheckButton事件处理函数

from tkinter import *


def callback():
    print('checked this button')


root = Tk()

Checkbutton(root, text='python', command=callback).pack()

root.mainloop()
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改变CheckButton的显示文本

from tkinter import *


def callback():
    v.set('change checkbutton')


root = Tk()

v = StringVar()
v.set('check button')
Checkbutton(root, text='python', command=callback, textvariable=v).pack()

root.mainloop()
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将CheckButton的值与变量绑定

from tkinter import *


def callback():
    print(v.get())
    v.set(v.get())


root = Tk()

v = IntVar()
v.set('check button')
Checkbutton(root, text='python', command=callback, variable=v, textvariable=v).pack()

root.mainloop()
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设置CheckButton的状态值

from tkinter import *


def callback():
    print(v.get())


root = Tk()

v = StringVar()
v.set('check button')
Checkbutton(root, text='python', command=callback, variable=v, onvalue='python', offvalue='tkinter').pack()

root.mainloop()
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Tkinter RadioButton

单选按钮

RadioButton极简例子

from tkinter import *

root = Tk()

Radiobutton(root, text='python').pack()
Radiobutton(root, text='tkinter').pack()
Radiobutton(root, text='widget').pack()

root.mainloop()
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为RadioButton指定组

from tkinter import *

root = Tk()

v = IntVar()
v.set(1)

for i in range(3):
    Radiobutton(root, variable=v, text='python', value=i).pack()

root.mainloop()
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创建不同的组

from tkinter import *

root = Tk()

vLang = IntVar()
vOS = IntVar()
vLang.set(1)
vOS.set(2)
for v in [vLang,vOS]:
    for i in range(3):
        Radiobutton(root, variable=v, value=i, text='python' + str(i)).pack()

root.mainloop()
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使用相同的value

from tkinter import *

root = Tk()

v = IntVar()
v.set(1)
for i in range(3):
    Radiobutton(root, variable=v, value=1, text='python' + str(i)).pack()
for i in range(3):
    Radiobutton(root, variable=v, value=i, text='python' + str(2 + i)).pack()

root.mainloop()
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RadioButton绑定事件处理函数

from tkinter import *


def r1():
    print('call r1')


def r2():
    print('call r2' )


def r3():
    print('call r3')


def r4():
    print('call r4' )


i = 0

root = Tk()
v = IntVar()
v.set(0)
for r in [r1, r2, r3, r4]:
    Radiobutton(root, variable=v, text='radio button', value=i, command=r).pack()
    Radiobutton(root, variable=v, text='radio button', value=i, command=r).pack()

i += 1

root.mainloop()
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RaidoButton外观效果

from tkinter import *

root = Tk()
v = IntVar()
v.set(1)
for i in range(3):
    Radiobutton(root, variable=v, indicatoron=0, text='python & tkinter', value=i).pack()

root.mainloop()
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