Tkinter Listbox looses selection on Tab

[=?ISO-8859-1?Q?J=F8rgen_Hansen?=]

Hi

I have a problem with a Listbox in Tkinter. When I tab through several
widgets with the tab-key, the listbox looses its selection, even
though it has been selected with .selection_set. The example below
demonstrates this. Can anyone provide me with some help on this?

Regards
Jorgen

Ps. I'm on a W2K machine with Python 2.2.2

----
from Tkinter import *

root = Tk()
colors = ['Yellow', 'Black', 'White', 'Green']

lb = Listbox(root)
for color in colors:
lb.insert(END, color)

lb.selection_set(0)
lb.pack()
Entry(root).pack()
root.mainloop()
----

 

[Martin Franklin]

Hi

I have a problem with a Listbox in Tkinter. When I tab through several
widgets with the tab-key, the listbox looses its selection, even
though it has been selected with .selection_set. The example below
demonstrates this. Can anyone provide me with some help on this?

Regards
Jorgen

Ps. I'm on a W2K machine with Python 2.2.2

----
from Tkinter import *

root = Tk()
colors = ['Yellow', 'Black', 'White', 'Green']

lb = Listbox(root)

Jorgen,

Try setting exportselection=0 in the Listbox construction like so:

lb = Listbox(root, exportselection=0)

This seems to work on my linux box.


Martin

 

[=?ISO-8859-1?Q?J=F8rgen_Cederberg?=]

Hi

I have a problem with a Listbox in Tkinter. When I tab through several
widgets with the tab-key, the listbox looses its selection, even
though it has been selected with .selection_set. The example below
demonstrates this. Can anyone provide me with some help on this?

Regards
Jorgen

Ps. I'm on a W2K machine with Python 2.2.2

----
from Tkinter import *

root = Tk()
colors = ['Yellow', 'Black', 'White', 'Green']

lb = Listbox(root)

Jorgen,

Try setting exportselection=0 in the Listbox construction like so:

lb = Listbox(root, exportselection=0)

This seems to work on my linux box.


Martin

Hi Martin,

It worked on my W2K machine too! Thanks alot. I skimmed through some
TCL/TK documentation, but I'm still somewhat puzzled over the default
behavior.

But I'm sure I'll figure it out someday.

Have a nice day
Jorgen