python的tkinter使用

__author__ = 'Python'

import tkinter as tk

class Application(tk.Frame):
    def __init__(self, master=None):
        tk.Frame.__init__(self,master)
        self.pack()
        self.createWidgets()

    def createWidgets(self):
        #self.hi_there = tk.Button(self)
        # .hi_there configure -text Hello World\n(click me) -command say_hi
        #self.hi_there["text"] = "Hello World\n(click me)"
        #self.hi_there["command"] = self.say_hi
        self.hi_there = tk.Button(self, text="Hello World\n(click me)", command=self.say_hi)
        self.hi_there.pack(side="left")
        self.QUIT = tk.Button(self, text="QUIT", fg="red", bg="blue", command=root.destroy)
        self.QUIT.pack(side="bottom")

    def say_hi(self):
        print("hi there, everyone!")

root = tk.Tk()

# create the application
app = Application(master=root)

# start the program
app.mainloop()