For many reasons a developer may prefer to draw the bars to generate the barcode, rather than use the metafile image returned by the dBarcode-2D library.
To do this use the “pattern” string returned from the DLL or OCX.
The choice of size for the drawn bars is a matter for the developer. However, some features of the drawn image should be considered in relation to the notes below for the different barcode types supported. In particular note that some stacked barcode types require separator lines to be drawn between each row. In general separator lines are drawn with the thickness of a single unit (the same as the thinnest bar in the symbol).
More: