title: How to position a rectangle into upper left corner inside of a frame?
body: <p>I am able to draw a rectangle inside a frame using tkinter but when window is maximized, the rectangle is no longer at upper left corner of the frame.</p>
  
  <p>How do I pin the rectangle to the upper left corner of the frame ?</p>
  
  <p>This is what I have:</p>
  
  <pre><code>from Tkinter import *
  
  master = Tk()
  
  f1 = Frame(height=100, bd=2, relief=RAISED)
  f1.pack(fill=X, padx=3, pady=3)
  
  c = Canvas(f1)
  c.create_rectangle(1,1,100,90)
  c.pack()
  
  mainloop()
  </code></pre>