Hi Alexandre,
A patch of yours from 2.5 years ago (http://source.winehq.org/git/wine.git/?a=commitdiff;h=b72994b6d4a04352e18934...) changed the behaviour to not send WM_GETTEXT any more. My experiments on Windows show that WM_GETTEXT should be used. Can you remember what the reasoning behind the change in this patch was?