Gigs_ wrote:
> Hi Im new to gui programming
>
> from Tkinter import * # get widget classes
> from tkMessageBox import askokcancel # get canned std dialog
>
> class Quitter(Frame): # subclass our GUI
> def __init__(self, parent=None): # constructor method
> Frame.__init__(self, parent)
> self.pack()
> widget = Button(self, text='Quit', command=self.quit)
> widget.pack(side=LEFT)
> def quit(self):
> ans = askokcancel('Verify exit', "Really quit?")
> if ans: Frame.quit(self)
>
> class Demo(Frame):
> def __init__(self, parent=None):
> Frame.__init__(self, parent)
> self.pack()
> Label(self, text="Basic demos").pack()
> for (key, value) in demos.items():
> func = (lambda key=key: self.printit(key))
> Button(self, text=key, command=func).pack(side=TOP,
> fill=BOTH)
> Quitter(self).pack() # here
> def printit(self, name):
> print name, 'returns =>', demos[name]()
>
>
> My problem is in class Demo. How is the best way to use class Quitter in
> class Demo?
> should it be:
> Quitter(self).pack()
> Quitter(self)
> ...
You are calling the Quitter's pack() method twice, once in
Quitter.__init__() and then again in Demo.__init__(). I would remove the
call in Quitter.__init__(). If you do that you can use your Quitter class
with other layout managers which require other configuration methods, e. g.
Quitter(...).grid(...).
Peter
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