A Dangling Tk Entry
Marc 'BlackJack' Rintsch
bj_666 at gmx.net
Mon Mar 9 04:35:17 EDT 2009
On Sun, 08 Mar 2009 22:20:09 -0700, W. eWatson wrote:
> You didn't answer my question why entry is necessary at all. The
> original author thought it was necessary to return entry. I'll give you
> a peek at a segment of the code I'm working with here:
>
> class Enter_Data_Dialog(tkSimpleDialog.Dialog):
>
> def __init__(self, parent, sdict):
> self.sdict = sdict
> tkSimpleDialog.Dialog.__init__(self, parent)
>
> def body(self,master):
> self.title("Set a Number Entry Dialog")
>
> Label( master, text="Number ").grid(row=0, sticky=W)
> self.anumberVar = StringVar()
> entry = Entry(master, width=10,
> textvariable=self.anumberVar).grid(row=0,
column=1)
> self.anumberVar.set( "%d" % self.sdict["anumber"] )
>
> return entry
`entry` is unnecessary here. But that was not obvious from your previous
example, as you trimmed the code. Now it is clear that `entry` is always
`None` because that's what `grid()` returns.
But according to the docs this method should return the widget, that
should get the focus, so maybe the author really wanted to return the
`Entry` instance here, instead of `None`.
Ciao,
Marc 'BlackJack' Rintsch
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