If you hope to use the barcode function in OLE Container enabled application directly, SDK/ActiveX is the best choice. With the SDK/ActiveX,you can encode more than 1100 bytes, 1800 ASCII characters, or 2700 digits to image such as BMP,PNG,JPG,GIF image using C/C++/Delphi/VB/C++ Builder with several lines of code. It support 9 error correction levels and several image styles such as background color, bar color, image quality, rotation angle,x-dimension and etc. We support five license modal: Single User license, Small Company license, 1 Developer License,5 Developer License,Unlimited Developer License. You can develop and distribute your application with one of those license modal depends your needs. ActiveX is the name Microsoft has given to a set of "strategic" object-oriented programming technologies and tools. The main technology is the Component Object Model (COM). Used in a network with a directory and additional support, COM becomes the Distributed Component Object Model (DCOM). The main thing that you create when writing a program to run in the ActiveX environment is a component, a self-sufficient program that can be run anywhere in your ActiveX network (currently a network consisting of Windows and Macintosh systems). This component is known as an ActiveX control. ActiveX is Microsoft's answer to the Java technology from Sun Microsystems. An ActiveX control is roughly equivalent to a Java applet. One of the main advantages of a component is that it can be re-used by many applications (referred to as component containers). A COM component object (ActiveX control) can be created using one of several languages or development tools, including C++ and Visual Basic, or PowerBuilder, or with scripting tools such as VBScript. Currently, ActiveX controls run in Windows 95/98/NT/2000 and in Macintosh