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Re: Is it necessary to call Tk() when writing a GUI app with Tkinter?

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> EXAMPLE 1: (this works, but is flawed!)
>  root = tk.Tk()
>  b = tk.Button(master=None, text='Sloppy Coder')
>  b.pack()
>  root.mainloop()
> 
> EXAMPLE 2: (This is how to write code!)
>  root = tk.Tk()
>  widgetframe = tk.Frame(root)
>  b = tk.Button(master=None, text='Sloppy Coder')
>  b.pack()
>  root.mainloop()
> 
> EXAMPLE 3: (OOP style)
>  class App(tk.Tk):
>      def __init__(self):
>          tk.Tk.__init__(self)
>          # something should happen here to justify using OOP
>      # or here
> 
>  class AppFrame(tk.Frame):
>      def __init__(self, master, **kw):
>          tk.Frame.__init__(self, master, **kw)
>          self.createWidgets()
> 
>      def createWidgets(self):
>          b = tk.Button(master=None, text='Push Me')
>          b.pack()
> 
>  if __name__ == '__main__':
>      app = App()
>      frame = AppFrame(app)
>      frame.pack()
>      app.mainloop()

Why is the master argument for Button set to None? Shouldn't it be the Frame object? And shouldn't it also have self as the first argument?

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Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-28 21:06 -0800
  Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-29 06:24 -0800
    Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Terry Reedy <tjreedy@udel.edu> - 2012-02-29 19:17 -0500
      Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-29 19:22 -0800
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Terry Reedy <tjreedy@udel.edu> - 2012-03-01 00:24 -0500
          Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-03-01 18:49 -0800
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-03-01 19:02 -0800
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Terry Reedy <tjreedy@udel.edu> - 2012-03-01 22:43 -0500
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Terry Reedy <tjreedy@udel.edu> - 2012-03-02 15:19 -0500
              Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Mel Wilson <mwilson@the-wire.com> - 2012-03-02 15:52 -0500
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? "Russell E. Owen" <rowen@uw.edu> - 2012-03-05 11:45 -0800
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 21:40 -0800
          Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-03-01 18:53 -0800
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Mark Roseman <mark@markroseman.com> - 2012-03-02 10:57 -0700
              Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-03-02 10:53 -0800
    Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 20:41 -0800
      Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Terry Reedy <tjreedy@udel.edu> - 2012-03-01 00:40 -0500
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 21:45 -0800
          Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 22:14 -0800
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-03-01 18:55 -0800
          Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 22:14 -0800
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 21:45 -0800
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 22:41 -0800
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 22:41 -0800
          Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-03-01 07:38 +0000
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-02-29 23:58 -0800
      Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-03-01 18:35 -0800
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-03-01 19:15 -0800
          Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-03-01 19:19 -0800
            Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-03-01 21:22 -0800
        Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? John Salerno <johnjsal@gmail.com> - 2012-03-02 14:16 -0800
          Re: Is it necessary to call Tk() when writing a GUI app with Tkinter? Rick Johnson <rantingrickjohnson@gmail.com> - 2012-03-03 20:27 -0800

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