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4/8/2010

This function creates a GUID, a unique 128-bit integer used for CLSIDs and interface identifiers.

Syntax

HRESULT CoCreateGuid(
  GUID* 
pguid
);

Parameters

pguid

[out] Pointer to the requested GUID on return.

Return Value

S_OK

The GUID was successfully created.

Microsoft Win32® errors are returned by UuidCreatebut wrapped as an HRESULT.

Remarks

The CoCreateGuidfunction calls the RPC function UuidCreate, which creates a GUID, a globally unique 128-bit integer.

Use the CoCreateGuidfunction 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.

To determine whether the platform supports this function, see Determining Supported COM APIs.

Requirements

Header objbase.h
Library ole32.lib
Windows Embedded CE Windows CE 3.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also

Reference

COM Functions