If I have a thread that calls WaitOne() on a Mutex object with no arguments,
is the Mutex owned by the calling thread once the WaitOne() call returns?

The documentation states that when no arguments are passed to WaitOne() that
it translates to a WaitOne(-1,false) call.

I am confused about the bool argument of the Mutex.  If false is passed to a
WaitOne call, is the mutex then acquired by the calling thread or does it
just indicate that the mutex is now free, but not acquired?