name : not-what-you-might-think-2.py from Tkinter import * class Test(Frame): def createWidgets(self): self.Gpanel = Frame(self, width='1i', height='1i', background='green') # this line turns off the recalculation of geometry by masters. self.Gpanel.propagate(0) self.Gpanel.pack(side=LEFT) # a QUIT button self.Gpanel.QUIT = Button(self.Gpanel, text='QUIT', foreground='red', command=self.quit) self.Gpanel.QUIT.pack(side=LEFT) def __init__(self, master=None): Frame.__init__(self, master) Pack.config(self) self.createWidgets() test = Test() test.master.title('packer demo') test.master.iconname('packer') test.mainloop()