CLSIDFromProgID

Looks up a CLSID from a ProgID in the registry.

HRESULT CLSIDFromProgID(

LPCOLESTR lpszProgID,	//Points to the ProgID whose CLSID is requested
LPCLSID pclsid	//Receives a pointer to the created CLSID
);

Parameters
lpszProgID

Points to the ProgID whose CLSID is requested.

pclsid

Receives a pointer to the location of the created CLSID on return.

Return Values
S_OK

Indicates the CLSID was created successfully.

CO_E_CLASSSTRING

Indicates the registered CLSID for the ProgID is invalid.

REGDB_E_WRITEREGDB

Indicates an error occurred writing to the registry.

E_OUTOFMEMORY

Out of memory.

E_INVALIDARG

Indicates one or more arguments are invalid.

E_UNEXPECTED

Indicates an unexpected error occurred.

Comments
Given a ProgID, CLSIDFromProgID looks up its associated CLSID from a ProgID in the registry. If the ProgID cannot be found in the registry, CLSIDFromProgID creates an OLE 1 CLSID for it. Because of the restrictions placed on OLE 1 CLSID values, CLSIDFromProgID and CLSIDFromString are the only two functions that can be used to generate a CLSID for an OLE 1 object.