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Tip: These instructions are for AutoCAD 2012. Right click over any blank area on your palette and chose вЂNew PaletteвЂ™ to create a new blank palette which we will use for testing our macro.

Best autocad lisp how to#

You can run your Macro from the AutoCAD CUI (See EdwinвЂ™s post on creating new AutoCAD commands) however I am going to show you how to run your command from a tool palette.ДЇirst use the keyboard combination shortcut CTRL+3 to open your tool palettes. You can read more about the Syntax for AutoCAD Macros here. This should cancel any other commands that are running before your Macro runs. The ^C^C at the beginning of the command is equivalent to pressing вЂEscвЂ™ on the keyboard twice. However, using spaces can make your code difficult to read and debug so I suggest that you replace the spaces with semi-colons. Spaces are also interpreted as hitting the return key (just like when you are operating AutoCAD manually).

Note that, instead of a carriage return macros use the semi-colon to indicate where you would usually press return on your keyboard. To write the same routine as a macro, we would put it all on one line, like this:

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We end up with this script to create an A1 PDF plot in our default plotting location: In the last post, we learned how to examine what we had previously written at the command line to write a script. Tip: You can of course, get the best of both worlds by using a command Macro to call a ScriptвЂ¦ Automate your plotting вЂ“ reloaded The Bad вЂ“ Writing long, complicated command MacroвЂ™s can be very difficult to debug. Macros can contain pauses for user input, but be careful вЂ“ there is no error handling method in a Macro. AutoCAD Command MacroвЂ™s can contain LISP code, and they can also contain DIESEL code (which is good for AutoCAD LT users). The Good вЂ“ AutoCAD command Macros can be distributed via the CUI or tool palettes, making it much more intuitive for your users to use. Some internal training will be required to run your Scripts. The Bad вЂ“ Loading Script files can be a fiddle, and your users will need to know where to find the Script files. This is not available to AutoCAD LT users.

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If you are using the full version of AutoCAD, you can use the LISP programming language within your script. AutoCAD scripts can contain comments, to remind you what the script does.

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Should you want to update a Script file, you only need to change it in one place for everyone to get the changes. AutoCAD scripts can be stored in a central location on your server.

The Good вЂ“ AutoCAD scripts can contain long lists of instructions for AutoCAD to follow. All you really need to automate AutoCAD is a good understanding of the sequence of commands that you need to complete to get the job done. I hope to demonstrate that the process of writing a Macro is the same as that of writing a Script. A Macro usually lives within your CUI or on a Tool palette.

An AutoCAD command Macro is also a list of instructions for AutoCAD to follow, but a Macro is run from the AutoCAD UI (A tool bar button, menu pull down or short cut key combination).

SCR, that contains a number of instructions for AutoCAD to perform at the command line.

An AutoCAD Script Is an ASCII text file, with the file extension.

We will look at the difference between a Script and a Macro and discuss the possibilities of both. In this post we will look at another automation tool вЂ“ the command Macro. In my last post for CAD Notes, I showed you how to take a task that you perform frequently, and automate it by turning it into an AutoCAD script.