I'm using gtk.EntryCompletion, which works pretty nicely.

But I wanted to add a button near the entry, that when clicked, just
shows the options in the lines below the entry (just as if I just
entered the present text in the entry).

After trying everything, I reach the conclusion that there's no way to do it. Could you please add this feature?

Other people is missing it also [1].

Thank you!!

[1] http://www.daa.com.au/pipermail/pygtk/2006-April/012069.html