Martin Franklin wrote:
> Russell E. Owen wrote:
>> In article <[EMAIL PROTECTED]>,
>> Alexander Belchenko <[EMAIL PROTECTED]> wrote:
>>
>>> -----BEGIN PGP SIGNED MESSAGE-----
>>> Hash: SHA1
>>>
>>> Jim Kleckner пишет:
>>> | Any pointers to what it takes to add/remove widgets
>>> | from a running application?
>>>
>>> Something like this maybe?
>>>
>>> from Tkinter import *
>>> root = Tk()
>>> x = Label(root, text='Hello')
>>> x.pack()
>>> Button(root, text='Hide', command=x.pack_forget).pack()
>>> root.mainloop()
>> Or if you use the gridder you can remove things temporary and restore
>> them again easily:
>> x.grid(row=0....)
>> x.grid_remove() # to temporarily remove
>> x.grid() # to restore using the original grid settings
>> x.grid_forget() # to remove permanently
>> (remove is not supported by the packer)
>>
>
> pack_forget does not erm remove either ;)
>
>
>
> from Tkinter import *
>
>
> root = Tk()
> root.title("Pack is BEST!!!")
>
> l = Label(root, text="Pack is simply the best")
> l.pack()
>
>
> def forget():
> l.pack_forget()
>
> def remember():
> l.pack()
>
>
> b = Button(root, text="Forget about it", command=forget)
> b.pack()
> b = Button(root, text="Wait, I still need you", command=remember)
> b.pack()
>
>
> root.mainloop()
>
>
> BUT... the remember function packs the label widget in it's new packing
> order, so it is packed after the two buttons, as far as I know the only
> way to 'remember' its pack position is to put it inside a Frame widget
> (and leave the Frame where it stands) - at least thats how I do it
>
> To the OP I guess you've seen how easy this is with Tk(inter) :)
>
> Cheers,
> Martin.
Thank you for the nice examples.
I see running this application that the remember button
causes the label to relocated to the bottom of the window.
What I actually want is to construct and add new widgets
during the mainloop(). So a button that appends new labels
at the bottom based on a text entry field would demonstrate
the issue.
I've been playing with this extremely simple and interesting
tVector helper code from here:
http://www.freenet.org.nz/python/tVector/
Ideally, I just want to reach in and extend the widget list.
I'm attaching a file with some concept code using tVector
(yes, I should rewrite it with grid, I guess).
The grid manager looks interesting and it seems that it
ought to be able do something like this but the methods
don't obviously have an append() or some such.
Jim
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