Python_GUI

# Author:Richard
from tkinter import *

def processOK():
    print("OK button is clicked!")

def processCancel():
    print("Cancel button is clicked!")

window = Tk()  #creat a window
# label = Label(window, text = "Welcome to Python!")  #小构建类
# button = Button(window, text = "Click Me")
# label.pack()   #place the label in the window
# button.pack()  #pack包管理器将小构建一行一行放在窗口中

btOK = Button(window, text = "OK", fg = "red", command = processOK)  #回调函数或处理器
btCancel = Button(window, text = "Cancel", fg = "yellow", command = processCancel)

btOK.pack()
btCancel.pack()


window.mainloop()  #creat an event loop实践循环