pguid

[out] Pointer to the requested GUID on return.

S_OK

The GUID was successfully created.

Win32 errors are returned by UuidCreate but wrapped as an HRESULT.

The CoCreateGuid function calls the RPC function UuidCreate, which creates a GUID, a globally unique 128-bit integer. Use the CoCreateGuid function when you need an absolutely unique number that you will use as a persistent identifier in a distributed environment.To a very high degree of certainty, this function returns a unique value – no other invocation, on the same or any other system (networked or not), should return the same value.

For an explanation of the requirement values, see Requirements (COM).

Windows NT/2000/XP: Requires Windows NT 3.1 or later.

Windows 95/98: Requires Windows 95 or later.

Header: Declared in objbase.h.

Library: Use ole32.lib.

Reference