TKinter: I cannot see my left frame with a button inside

Question

I cannot see my left frame with a button inside (I'm using TKinter).. This is my code:

#create window & frames
root = Tk()
root.title( "Medical Visualization" )

rootFrame = Frame(root)
rootFrame.pack( fill=BOTH, expand=1, side=TOP )

leftframe = Frame(root, width=100, bg="blue")
leftframe.pack(fill=X, expand=True)

button = Button(leftframe, text="Add Isosurface", fg="red")
button.pack( side = LEFT)

root.mainloop()

thanks

Answer 1

I see it, and looking at the code I see nothing that would prevent it from being seen. Are you remembering to call root.mainloop? Your code snippet doesn't show you calling that method.