Hello world!

Welcome to The Definitive Guide

Here I intend to guide you through Xojo ; how to use the IDE and how to write more effective code with it.

This guide should be treated as a 2025 update to Matt Neuburg’s excellent REALbasic : The Definitive Guide. While that book is nearly 25 years old much of what was written in it still applies to Xojo; REALbasic’s modern successor.
However in the intervening years many things have changed. Matt originally only had Desktop & Console applications to try & describe. Now Xojo targets Desktop, Console.Web, iOS & Android. And there are inherent differences between those project types and how they behave when executed.
I’ll do my best to point out similarities as well as differences.