From Tracker Software PDF SDK
Creates wrapper for the input object of the operation. This wrapper allows to pass additional parameters along with the input object.
HRESULT CreateInputItem([in] IUnknown* pSrc, [out, retval] IOpInputItem** pNewInputItem);
- [in] Pointer to the IUnknown based interface of the input object for the operation.
- [out, retval] Pointer to a buffer, that receives a pointer to the wrapper object.
Returns S_OK if the operation was successful, or will return an error code if it fails.