With the very first blueprints of VX, the decision was made to develop a RAD tool with which one's productivity is going to be enhanced also by all the customizing features and capabilities is offers. Consequently, you can customize any behaviour of Visual Xbase++ using Xbase++ as the language. For example: You can trigger the creation of a file and insert your own template code automatically based on a certain key stroke or some other operation within the IDE.

New features can easily be added to VX by loading user-defined packages. At its core, a package consists of an Xbase++ DLL exposing interfaces the VX IDE uses to call upon features implemented in the package.

Functionality supplied by the VX Bridge, allows packages to add new commands or menus to the VX environment. Furthermore, certain behaviour can be attributed to user actions, such as the user issuing a "Run" command. Last but not least, Components that can be used by the various visual design tools or the IntelliHelp system are also distributed via VX packages.