Lisp File For Autocad
Lisp is a very useful part of the AutoCAD® application, and one of the first things its good for you to know is how acad.lsp and acaddoc.lsp work. These two lisp files are automatically executed when certain conditions occur in AutoCAD.
- Vital LISP was a superset of the existing AutoLISP language that added VBA-like access to the AutoCAD object model, reactors (event handling for AutoCAD objects), general ActiveX support, and some other general Lisp functions.
- Not only that, but there are so many useful free LISP files available on the internet that will do things that AutoCAD just cannot do easily out of the box. When I first started at CAD Masters I wanted to get a basic understanding of writing LISP files.
- Re: Load lisp files automatically In addition be sure that your lisp is in a trusted folder (which it probably already is). Another approach is to create an acaddoc.lsp file and add the load or autoload statements for your files.
As you have Created startup.lsp file and saved on path D: LISP Files, assign this path in Support file search path. Go to Tools Options File Locations System Expand section ‘Support Files Search Path’, On righ side click on New tab and Browse and select folder D: LISP Files (Move up this path) Apply and Ok.
acad.lsp
Firstly, acad.lsp is by default executed when AutoCAD® first boots up. Therefore, this will run once only. Because of this it is a great place to put startup procedures, or things that you want to do to initialise AutoCAD®. For example, I have mapped commands to various key combinations under my left hand, including SS, DD and DA. The problem is, these are existing built in commands to AutoCAD®. The solution for me was to use the UNDEFINE command to remove the default commands from AutoCAD®, which would then allow my own customisations in acad.pgp to take priority. And acad.lsp is a great place to run these commands, like so:
(command “undefine” “ss”)
(command “undefine” “dd”)
(command “undefine” “ad”)
For those new to lisp, the lisp command at work here is “command”, which basically allows you to invoke any AutoCAD® command from lisp. The text provided in quotes will be executed as if you had entered them into the AutoCAD® command line.
acaddoc.lsp
So how does acaddoc.lsp differ? As the name suggests, this has something to do with documents. In fact this lisp file is run every time a document is opened. Therefore this is the perfect place to do anything that is specific to the drawing you are working on. For example, I have a few system variables that I like to be set a certain way. Annoyingly they are drawing specific, but using acaddoc.lsp we can set them to whatever we want when the drawing is opened:
New Lisp Files For Autocad
; SKETCH produces polylines
(setvar “SKPOLY” 1)
; suppress “Would you like to convert to a polyline prompt”
(setvar “PEDITACCEPT” 1)
; set linetypes to be continuous on polylines
(setvar “PLINEGEN” 1)
Here are a few. For those learning lisp, the”setvar” lisp command tells AutoCAD® to set the value of a system variable (pretty obvious really!). Again, the arguments passed to it will have to correspond with how you’d enter them into the command line normally.
Where to save acad.lsp and acaddoc.lsp
The location of where to save acad.lsp or acaddoc.lsp depends on what you want to achieve, but it will only be loaded if it is found in one of your support paths, as specified in Options > Files > Support File Search Path. In the beginning, I assumed you could have many of these files in multiple support paths, but AutoCAD® will only load one. If there are many, AutoCAD® will load the first one that it finds in the order specified in your support paths. Support paths higher on the list will be searched before lower ones.
If you are working in a team that use several of the same lisp functions, a good idea is to place acad.lsp and acaddoc.lsp in some networked location, and add that location to you list of support paths. This is a much more manageable way, rather than trying to keep multiple files up to date on many computers. In order for these to run of course, it will have to be the first acad.lsp or acaddoc.lsp file that it finds, so you may have to rename or delete old versions of acad.lsp/acaddoc.lsp that already exist in local support paths.
So hopefully this has helped to understand acad.lsp and acaddoc.lsp. It’s pretty simple really, but knowing that little bit of extra detail can help to get things working the way that you want.
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Will
I have a huge LISP project, I've made a prv file that permits to the VLIDE to compile this project into a single vlx file (it compiles also the fas file). The problem is that it is not possible to compile the project from outside the autocad or from command prompt so I cannot automate the vlx building using a script.
The question is: is there any way to do this? Can I compile fas-vlx from outside the autocad? Or can I launch autocad giving a script that compiles the prv and then closes the autocad?
3 Answers
You have to launch AutoCAD, but even so it gets tricky as it requires the use of undocumented functions.
Owen WengerdOwen WengerdBe warned this is a bit of a Rube Goldberg. but it works!
I will be demonstrating with Autocad 2014.
First you will need to make an Autocad Script file that contains some undocumented commands. I named mine build.scr
(Note that vlisp-compile-list is not documented anywhere. If you do find some documentation please let me know!)
Then make a batch file that contains this:
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It starts AutoCAD and runs the specified script
next you will need to Download and install AutoHotKey
and build a script like this for it:
When you activate this script. It should open AutoCAD and build all of your LSP files into a single .FAS then close.
Lisp File For Autocad Download
Somethings to Note. The Visual LISP editor must be open to compile, The compile will only happen when window activation occurs.
If anyone finds a better way. PLEASE Let me know!
After some tests here I could finally make it a bit more faster and easy to use.
At command line, call autocad with some startup switches. You'll need an empty drawing, call it dummy.dwg. The /b stands for the script you'll run:
Inside .scr file:
The trick in that code is the (C:VLIDE T). It's not documented and I've found it because I know AutoLISP has a lot of undocumented functions. Try it with nil too, you'll see that VisualLISP will be the active window, locking your AutoCAD to execute the next commands (and so you'll need to click somewhere in AutoCAD to activate its window and make the code to run properly).
Note: When AutoCAD is closing, maybe your VisualLISP window will hold for a while, don't try to activate it. Let it be for few seconds and it'll close by itself.