Returns the class factory.
HRESULT DllGetClassObject(
   REFCLSID rclsid,
   REFIID riid,
   LPVOID* ppv 
) throw( );
Parameters
- rclsid 
 The CLSID of the object to be created.
- riid 
 The IID of the requested interface.
- ppv 
 A pointer to the interface pointer identified by riid. If the object does not support this interface, ppv is set to NULL.
Return Value
Returns S_OK on success, or an error HRESULT on failure.
Requirements
Header: atlbase.h