The PDFCOMP_2BITCOMPTYPE enumerated type represents the possible compression types used with 2 bit images. This enumerated type is used by the comp2Bit member of the PDFCOMPRESSION structure.
typedef enum tagPDFCOMP_2BITCOMPTYPE
{
PDFCOMP_2BITCOMPTYPE_ZIP = 0,
PDFCOMP_2BITCOMPTYPE_LZW,
} PDFCOMP_2BITCOMPTYPE, *LPPDFCOMP_2BITCOMPTYPE;
[0] Use Zip Compression.
[1] Use LZW Compression.