#include <ole.h>
typedef struct _OLESTREAM { /* ostr */
LPOLESTREAMVTBL lpstbl;
} OLESTREAM;
The OLESTREAM structure points to an OLESTREAMVTBL structure that provides stream input and output functions. These functions are used by the client library for stream operations on objects. The OLESTREAM structure is allocated and initialized by client applications.
lpstbl
Points to an OLESTREAMVTBL structure.