2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/31206It is next to impossible to develop real-life applications in just pure Prolog. With XPCE we realised a mechanism for integrating Prolog with an external object-oriented system that turns this OO system into a natural extension to Prolog. We describe the design and how it can be applied to other external OO systems.14 pages; Alexandre Tessier, editor; WLPE 2002, http://xxx.lanl.gov/abs/cs.SE/0207052Software EngineeringD.1.6; D.2.5; D.2.6; F.4.1; I.2.3text