I'm playing with Perl/Tk again and have two questions to which neither SuperSearch nor Google give any answers. (Perhaps because I used the wrong keywords)

The first question concerns performance of a Listbox, or rather a MListbox.
I've got a MListbox which is filled initially before packing. For 7500 entries (I know, this is much, and I will change the design) this takes about 17 seconds.
It is possible to refresh the contents after the widget is packed and now it takes over a minute to fill the MListbox.

I'm sure I've read somewhere, that you can somehow freeze a widget while you update it and show it afterwards, but I forgot where and how.
Any idea?

The next question concerns the alignment of the Listbox entries. They are left aligned by default.
How can I change this to right or center aligned?

TIA
busunsl

In reply to Tk::Listbox: 2 questions: performance and alignment by busunsl

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