| Microsoft DirectX 8.1 (C++) | 
The GetClassID method retrieves the class identifier of the filter. This method implements the IPersist::GetClassID method.
Syntax
HRESULT GetClassID(
    CLSID *pClsID
);
Parameters
pClsID
Pointer to a variable that receives the class identifier.
Return Value
Returns S_OK or E_POINTER.
See Also