[Tutor] Scrolling multilistbox help
jfouhy at paradise.net.nz
Tue Jul 19 00:30:31 CEST 2005
Quoting Alberto Troiano <albertito_g at hotmail.com>:
> I'm using the Multilistbox class and I noticed that it only handles the
> mouse scroll and the scrollbar to go down or up.I succesfully
> implemented the sort function that came with the class
> I also added code to handle the up and down arrow keys and it goes down
> all right but only select the item and it doesn't scroll down or up
> How can make it go up or down?
I haven't actually tried your code, but this might be the problem here:
> def _select1(self):
> if self.fila==self.size()-1:
> self.selection_clear(0, END)
> return 'break'
> def _scroll(self, *args):
> for l in self.lists:
> apply(l.yview, args)
You call self._scroll with no arguments to make the selected index visible (I
guess). But self._scroll just calls yview on each list..and yview with no
arguments returns a tuple, but otherwise does nothing.
Try replacing self._scroll with self.see --- possibly: self.see(self.fila).
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