Columns
Type: SHORT
Default: 0
When non-zero this parameter specifies the number of element columns or codeword columns in the symbol, and so determines the overall shape of the symbol.
For Aztec and Datamatrix symbols the value specifies the number of elements across the symbol. This value can range from 15 – 150 for Aztec or 10 – 144 for Datamatrix symbols.
For PDF417 the value specifies the number of column groups (excluding the start and stop groups) across the symbol. Each group of columns in a PDF417 symbol is a codeword and a row may contain from 1 – 30 codewords.
For Databar Expanded-stacked symbols the value specifies the number of codeword pairs in the first row of the symbol – subsequent rows may be shorter than the first row. The value can range from 1 – 10.
For all other barcode types the value of Columns is not used.
Data