See Also
 Important: |
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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 |