MMCTOCENTRY

This structure contains information about an entry in the compound table of contents (CTOC) of a RIFF compound file. 

typedef struct _MMCTOCENTRY {
  ULONG     ulOffset;           /*  Offset of element within CGRP. */
  ULONG     ulSize;             /*  Size of element. */
  ULONG     ulMedType;          /*  FOURCC of element. */
  ULONG     ulMedUsage;         /*  Possible subtype. */
  ULONG     ulCompressTech;     /*  Compression technique used. */
  ULONG     ulUncompressBytes;  /*  Actual size of uncompressed element. */
} MMCTOCENTRY;

typedef   MMCTOCENTRY   * PMMCTOCENTRY ;

Note: There are two optional fields, a variable-length name field and ULONG array, that may follow this structure.