wxComboBox with ~15,000 entries

Hi all,

I need to build a wxComboBox with ~15,000 entries. The problem is that on
the way to ~15,000 entries the GUI stops reacting for a while. I want to get
rid of the "for a while" thing. I tried to build a simple list with ~15,000
and then pass it to the wxComboBox ctor. I tried to init the wxComboBox with
an empty list, and then add the entries in a for loop. I tried to do the
task using a thread, that adds tha entries in a for loop to the wxComboBox
(via wxCallAfter() call). All these work, but nothing works as I would like
it to work.

Thanks in advance,
Ilia Kats