CLSIDFromString function (combaseapi.h)

Converts a string generated by the StringFromCLSID function back into the original CLSID.

Syntax

HRESULT CLSIDFromString(
  [in]  LPCOLESTR lpsz,
  [out] LPCLSID   pclsid
);

[in] lpsz

The zero terminated string representation of the CLSID or the ProgID or NULL.

[out] pclsid

A pointer to the CLSID.

This function can return the standard return value E_INVALIDARG, as well as the following values.

Return code	Description
NOERROR	The CLSID was obtained successfully.
CO_E_CLASSSTRING	The class string was improperly formatted.

The CLSID format is {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}.

Passing the ProgID results in saving associated CLSID in pclsid. Passing NULL results in GUID_NULL.

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps \| UWP apps]
Minimum supported server	Windows 2000 Server [desktop apps \| UWP apps]
Target Platform	Windows
Header	combaseapi.h (include Objbase.h)
Library	Ole32.lib
DLL	Ole32.dll