DDCMDREADWRITE

This data structure contains fields for the DDCMD_READ and DDCMD_WRITE messages.

 typedef struct _ddcmd_readwrite_parm {
   ULONG       ulFunction;    /*  Function requested by stream handler. */
   HSTREAM     hStream;       /*  Stream handle. */
   PVOID       pBuffer;       /*  Buffer pointer. */
   ULONG       ulBufferSize;  /*  Buffer size. */
   PVOID       pProcessLin;   /*  Process linear record pointer. */
   BOOL        fEOS;          /*  Whether or not this is the EOS buffer. */
   ULONG       ulParm1;       /*  Reserved for future use. */
   ULONG       ulParm2;       /*  Reserved for future use. */
   ULONG       ulLength;      /*  Length of the structure. */
 } DDCMDREADWRITE;