Returns

The return value indicates success or failure of registering the WinHLLAPI application with the implementation. If registration was successful, the return value is WHLLOK (zero). Otherwise, it is one of the following:
WHLLSYSNOTREADY
Indicates that the underlying network subsystem is unavailable.
WHLLVERNOTSUPPORTED
Indicates that the version requested is not provided by this implementation. This implementation supports Versions 1.0 and 1.1 only.