Don't open device if already open.
[wine] / dlls / ddraw / tests /
drwxr-xr-x   ..
-rw-r--r-- 46 .cvsignore
-rw-r--r-- 228 Makefile.in
-rw-r--r-- 6255 ddrawmodes.c
-rw-r--r-- 6104 dsurface.c