typedef struct _xcdUnzippingMemoryFileParams
{
  const WORD wStructSize; 
  const HXCEEDZIP hZip; 
  const TCHAR szFilename[ MAX_PATH ]; 
const BYTE * pbUncompressedData; 
const DWORD dwDataSize; 
  BOOL bEndOfData; 
} xcdUnzippingMemoryFileParams; 

This structure is available in both ANSI and UNICODE versions.