ICatInformation::EnumClassesOfCategories

Returns an enumerator over the classes that implement one or more of rgcatidImpl. If a class requires a category not listed in rgcatidReq, it is not included in the enumeration.

HRESULT EnumClassesOfCategories(

ULONG cImplemented,

//Number of category IDs in the rgcatidImpl array

CATID rgcatidImpl,

//Array of category identifiers

ULONG cRequired,

//Number of category IDs in the rgcatidReq array

CATID rgcatidReq,

//Array of category identifiers

IEnumCLSID** ppenumCLSID

//Location in which to return an IEnumCLSID interface

);

Parameters

cImplemented: [in] The number of category IDs in the rgcatidImpl array. This value cannot be zero. If this value is ((ULONG) -1), classes are included in the enumeration, regardless of the categories they implement.
rgcatidImpl: [in] An array of category identifiers.
cRequired: [in] The number of category IDs in the rgcatidReq array. This value can be zero. If this value is ((ULONG) -1), classes are included in the enumeration, regardless of the categories they require.
rgcatidReq: [in] An array of category identifiers.
ppenumCLSID: [out] The location in which to return an IEnumCLSID interface that can be used to enumerate the CLSIDs of the classes that implement category rcatid.

Return Values

S_OK: The function was successful.
E_INVALIDARG: One or more arguments are incorrect.
E_OUTOFMEMORY: Insufficient memory to create and return an enumerator object.

ULONG cImplemented,	//Number of category IDs in the rgcatidImpl array
CATID rgcatidImpl,	//Array of category identifiers
ULONG cRequired,	//Number of category IDs in the rgcatidReq array
CATID rgcatidReq,	//Array of category identifiers
IEnumCLSID** ppenumCLSID	//Location in which to return an IEnumCLSID interface
);