The version negotiation of the present invention insures that there will always be an expected data and control interface between a Dynamic Link Library (DLL) and an application program that relies on the DLL. The application program makes an initial call to the DLL that specifies the DLL version with...http://www.google.fr/patents/US5634114?utm_source=gb-gplus-shareBrevet US5634114 - Dynamic link library version negotiation
