https://bugs.winehq.org/show_bug.cgi?id=54233
--- Comment #4 from Rafał Mużyło galtgendo@o2.pl --- ...an idea for the devs: it would be nice if in WIN_CreateWindowEx right before final return there was something along the lines of 'TRACE("Created hwnd %p\n", hwnd);', just so it's both clear window creation has been successful and the value of new hwnd is on the same debug channel.