Before Visual LISP and the IDE (Integrated Development Environment), AutoLISP developers were forced to use text editors or word processors that know nothing about LISP syntax and requirements.More>>

Programming applications will often involve the detection of and recovery from errors caused by a variety of sources.More>>

This month we're going to take a look at some Visual LISP functions that will assist VBA programmers.More>>

Reactors are functions we write that run in response to something happening in the computer system.More>>

What's the difference between AutoLISP and VBA?I want to learn how to program AutoCAD, but I'm not sure which tool to learnfirst. Which one is better?More>>

Do you know what differentiates AutoCAD from a drawing program of lesser value? The quick answer is AutoCAD has programming interfaces.More>>

Reactors are functions (program modules) that run in reaction to something going on within the system.More>>

Let's explore some of the features in Visual LISP that relate to the operating system and develop a utility for our toolbox that has been frequently requested by readers.More>>

Have you ever wanted to attach additional information to existing AutoCAD entity objects? Perhaps material properties, loading limits or construction details? If so, then you should consider the use of extended data.More>>

One of the more frequently asked questions by AutoLISP programmers who are learning about dialog boxes is how to associate a dialog list box with an AutoLISP data list.More>>