An important aspect of most AutoCAD-based programming projects is the building of one or more selection sets.More>>

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>>

AutoCAD drawings can contain data that can be used by other computer programs to perform a variety of tasks such as creating a bill of materials, validating a design, interfacing to a machine tool or any number of activities.More>>