object control extension (OCX)
Object Control Extension (OCX) is an object-oriented library ofsoftware modules based on Object Linking and Embedding( OLE) for supporting object-oriented applications on personalcomputers running Windows. The OCX controls support the integration of third-party software modules into existing programs, including those that are not subject to a component model. The control elements are also used in Common Object Model( COM) and can be transferred ActiveX.