"""
使用tkinter创建GUI
- 顶层窗口
- 控件
- 布局
- 事件回调
Version: 0.1
Author: 骆昊
Date: 2018-03-14
"""
import tkinter
import tkinter.messagebox
def main():
flag = True
def change_label_text():
nonlocal flag
flag = not flag
color, msg = ('red', 'Hello, world!')\
if flag else ('blue', 'Goodbye, world!')
label.config(text=msg, fg=color)
def confirm_to_quit():
if tkinter.messagebox.askokcancel('温馨提示', '确定要退出吗?'):
top.quit()
top = tkinter.Tk()
top.geometry('240x160')
top.title('小游戏')
label = tkinter.Label(top, text='Hello, world!', font='Arial -32', fg='red')
label.pack(expand=1)
panel = tkinter.Frame(top)
button1 = tkinter.Button(panel, text='修改', command=change_label_text)
button1.pack(side='left')
button2 = tkinter.Button(panel, text='退出', command=confirm_to_quit)
button2.pack(side='right')
panel.pack(side='bottom')
tkinter.mainloop()
if __name__ == '__main__':
main()