General Format of a .ZIP file

  Files stored in arbitrary order.  Large .ZIP files can span multiple
  diskette media or be split into user-defined segment sizes.  The
  minimum user-defined segment size for a split .ZIP file is 64K.

  Overall .ZIP file format:
    [local file header 1]
    [file data 1]
    [data descriptor 1]
    .
    .
    .
    [local file header n]
    [file data n]
    [data descriptor n]
    [central directory]

typedef struct tagZIPHEADER
{
 char* szFilename;
 unsigned short uFileNameSize;
 unsigned short uVersionMadeBy;   ///< version made by and system compatibility
 unsigned short uVersionNeeded;   ///< version needed to extract
 unsigned short uFlag;     ///< general purpose bit flag 
 unsigned short uMethod;     ///< compression method
 unsigned short uModTime;    ///< last mod file time
 unsigned short uModDate;    ///< last mod file date
 unsigned long uCrc32;     ///< crc-32   
 unsigned long uComprSize;    ///< compressed size
 unsigned long uUncomprSize;   ///< uncompressed size   
 unsigned int uExtraFieldSize;

 //central directory
 unsigned int uCommentSize;
 unsigned int uDiskStart;
 unsigned int uInternalAttr;
 unsigned long uExternalAttr;
 unsigned long uOffset;
}ZIPHEADER, FAR* LPZIPHEADER;

typedef struct tagENDINFO{
unsigned long m_uCentrDirPos; ///< the position of the beginning of the central directory (as located by #Locate)
 unsigned long m_uBytesBeforeZip;///< The number of bytes before the actual zip archive in a file. It is non-zero for self-extracting archives.
 unsigned short m_uThisDisk;  ///< number of the disk with the central directory end record (the number of disks in the disk-spanning archive)
 unsigned short m_uDiskWithCD;  ///< number of the disk with the start of the central directory
 unsigned short m_uDiskEntriesNo; ///< total number of entries in the central dir on this disk
 unsigned short m_uEntriesNumber; ///< total number of entries in the central dir
 unsigned long m_uSize;   ///< size of the central directory (valid only if #m_bOnDisk is \c true; use #GetSize instead)
 unsigned long m_uOffset;  ///< offset of start of central directory with respect to the starting disk number
 ///< (as written in the central directory record);
 ///< valid only if #m_bOnDisk is \c true
}ENDINFO, FAR* LPENDINFO;