ArcGIS is the newest and most powerful GIS technology from ESRI, and this comprehensive reference teaches Geographic Information System (GIS) technology users the concepts and methods for its customization. As ArcObjects are the building blocks of COM-based ArcGIS software, GIS professionals are given an introduction to basic object-oriented programming concepts and the classes, properties, and methods that make ArcObjects unique. Also stressed are the use of Visual Basic for Applications and the use of ArcObjects to modify the ArcGIS interface, change its basic operations, and create entirely new functionality. Included are two large-scale, fold-up object diagrams.