ActiveX DLL for Bar Code Fonts - Version 1.6 The ActiveX DLL can be easily integrated into your ActiveX compliant application or development environment for barcode automation purposes. Our ActiveX DLL contains functions for our POSTNET, Code 39, Interleaved 2 of 5, Code 128, UPC-A, UPC-E, EAN-13, EAN-8, UCC-128, MSI / Plessy, Code 11, SSCC-18 and SCC-14 barcode fonts and specifications. Using the DLL, your application will pass data to the appropriate barcode function. The function will then return a string formatted to the barcode font.