Compare result of RegQueryValueExW() with ERROR_SUCCESS.
[wine] / dlls / msimg32 /
drwxr-xr-x   ..
-rw-r--r-- 42 .cvsignore
-rw-r--r-- 234 Makefile.in
-rw-r--r-- 358 msimg32.spec
-rw-r--r-- 1555 msimg32_main.c