Top level windows with 0 width or height are created with a size of 1x1 in
[wine] / windows / x11drv /
drwxr-xr-x   ..
-rw-r--r-- 21 .cvsignore
-rw-r--r-- 443 Makefile.in
-rw-r--r-- 43260 clipboard.c
-rw-r--r-- 67285 event.c
-rw-r--r-- 928 init.c
-rw-r--r-- 55393 keyboard.c
-rw-r--r-- 11698 mouse.c
-rw-r--r-- 35297 wineclipsrv.c
-rw-r--r-- 34874 wnd.c