DDCMDCONTROL

This data structure contains fields for the DDCMD_CONTROL message.

 typedef struct _ddcmd_control_parm {
   ULONG       ulFunction;  /*  Function requested. */
   HSTREAM     hStream;     /*  Stream handle. */
   HEVENT      hEvent;      /*  Event handle. */
   ULONG       ulCmd;       /*  Flags. */
   PVOID       pParm;       /*  Pointer to CONTROL_PARM. */
   ULONG       ulParmSize;  /*  See CONTROL_PARM. */
 } DDCMDCONTROL;