![How to run lisp autocad How to run lisp autocad](/uploads/1/2/5/0/125008849/810019436.gif)
- There are numerous ways of loading AutoLisp Files: Command Line Loading. The simplest is from the AutoCad command line. The syntax for loading AutoLisp files is: (load 'filename') The.lsp extension is not required. Menu Loading. The following code samples are one way of loading AutoLisp files from a menu. Pull Down Menu's.
- LISP - File I/O - We have discussed about how standard input and output is handled by common LISP. All these functions work for reading from and writing into text and binary file.
- A single lisp file that contains numerous tools for drafting that include dimensioning tools, properties tools, text tools and others. Traver.zip An AutoLISP program for surveyors and civil engineers for traverse note reduction.
- AutoLISP is an interpretive language, so it can be stored in an ASCII text file, loaded, and then executed directly within AutoCAD. AutoLISP files typically have an.lsp file extension, but they can also have the.mnl file extension.
If the LISP file does not reside in the AutoCAD Support Path, a full filepath is needed so that the LISP file may be located; in this case, be sure to use double backslashes when specifying the path. When finished, open a new drawing and the LISP files should load.
If you have some lisp routines that you would like to have available when you are working in various drawings here is a way to have them available in all your drawings. This method of adding the .lsp files to a tool palette makes them available and will load them only when they are needed. Other methods like using an acad.lsp or acaddoc.lsp will load all the lisp files upon each drawing that you open and depending on how many lisp files you have may be a little slow.
First place your  lisp files and button images into a folder that will be a stable environment where it will not accidentally get moved or erased. Button images can be of various file types and sizes. In this example I have used 32×32 pixel bitmaps (.bmp).
Right click in the Tool Palette and select “New Palette” to place the new tools on. This will create a new tab on the tool palette… Give the new palette a unique name.
We now need to populate the new palette with content. The easiest way to do this is to simply drag something from the drawing area onto the palette and then modify its properties. Below, I have created a line and then dragged it onto the palette.
To change the tool’s properties from being just another line tool, right click and select “Properties” Trading card creator software.
The 5 areas below need to be changed in order for this tool to be the new custom tool:
- Give the tool a unique and meaningful name
- Give the new tool a meaningful description so that when you hover over the tool it will tell you what it does
- Change the “Use flyout” option to “No”
- Fill out the command string to specify the path to where the .lsp file resides and what the command call is in order to start the lisp routine.
- Give the new tool a cool new image/button
To define an image to use as the button, simply right click in the square area in the upper left and select “Specify image” and then browse to the image, select it and click ok.
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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.
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:
Highway Cross Section Lisp File For Autocad
(command “undefine” “ss”)
(command “undefine” “dd”)
(command “undefine” “ad”)
(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:
; 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)
(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.
Lisp For File Open Autocad
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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