cpython/Demo/tkinter/matt/canvas-w-widget-draw-el.py

from Tkinter import *

# this file demonstrates the creation of widgets as part of a canvas object

class Test(Frame):
    def printhi(self):
	print "hi"

    def createWidgets(self):
	self.QUIT = Button(self, text='QUIT', foreground='red', 
			   command=self.quit)
	self.QUIT.pack(side=BOTTOM, fill=BOTH)

	self.draw = Canvas(self, width="5i", height="5i")

	self.button = Button(self, text="this is a button", 
			     command=self.printhi)

	# note here the coords are given in pixels (form the 
	# upper right and corner of the window, as usual for X) 
	# but might just have well been given in inches or points or
	# whatever...use the "anchor" option to control what point of the 
	# widget (in this case the button) gets mapped to the given x, y. 
	# you can specify corners, edges, center, etc...
	self.draw.create_window(300, 300, window=self.button)

	self.draw.pack(side=LEFT)

    def __init__(self, master=None):
	Frame.__init__(self, master)
	Pack.config(self)
	self.createWidgets()

test = Test()

test.mainloop()