DeviceIoControl returns 0, but so does GetLastError?

Hello all,

Pretty much what the subject says. I'm using DeviceIoControl
with FSCTL_MOVE_FILE, and occasionally DIOC will return zero, but when
I call GetLastError, the return value is also zero. Any ideas? Can I
assume that means the file extents were moved successfully, or is that
a mistaken assumption?

Thanks in advance,

J.
Jeremiah D. Seitz
Omega Techware
http://www.omegatechware.net