Autocad Lisp Commands

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  1. Autocad Lisp Commands For Dummies
  2. Autocad Lisp Commands
  3. Autocad Lisp Command Save
  4. Autocad Lisp Commands Pdf

AutoLISP can execute a built-in AutoCAD command or one that is defined in a loaded ObjectARX or Managed .NET application.

Note: AutoCAD for Mac does not support Managed .NET applications.

The command and command-s functions allow you to start and pass values to an AutoCAD command. The command and command-s functions have a variable-length argument list. The first argument of these functions must be the command you want to execute. All other arguments must correspond to the types and values expected by that command's prompt sequence; these may be strings, real values, integers, points, entity names, or selection set names. Data such as angles, distances, and points can be passed either as strings or as the values themselves (as integer or real values, or as point lists). An empty string (') is equivalent to pressing the Spacebar or Enter on the keyboard.

Of each command. Basic AutoLISP functions are covered in Chapter 27 and Chapter 28 on the companion website. Detailed defi nitions of these and all other AutoLISP commands are found in the online documentation. The func-tion names are shown with their required and optional arguments. Required arguments are shown in square brackets and bold. 150 AutoCAD Command and Shortcut list, PDF eBook included. View Larger Image; In this massive list of approximately 150 AutoCAD commands, I have tried to include some of the most useful commands, Keyboard Shortcuts and Tools which every AutoCAD user must know. Some of the commands in this list are very basic which are used very frequently.

The command-s function is faster and more efficient than the command function, but the command being executed within the command-s function must be completed within the same statement. This means that an argument must be provided for each of the command’s prompts, and that it cannot execute any more AutoLISP statements until the function has completed. Unlike the command-s function, you can use AutoLISP functions within the command function and the command that is being executed does not need to be completed to continue execution of the program.

There are some restrictions on the commands that you can use with the command and command-s functions.

The following code fragment shows representative calls to command.

When the CircC command is loaded and executed at the AutoCAD Command prompt, the following actions occur:

  1. The first call to command passes points to the CIRCLE command as strings (draws a circle centered at 0.0,0.0 and passes through 3.0,3.0).
  2. The second call to command passes an integer to the THICKNESS system variable (changes the current thickness to 1.0).
  3. The last call to command prompts the user for a center point and then the radius of the circle.

The following code fragment shows representative calls to command-s.

The CircCS command is similar to CircC except it prompts the user for a center point and radius before making the last call to the command-s function. With the command-s function, you should avoid the use of the PAUSE token.

Related Concepts

Executes an AutoCAD command

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Supported Platforms: Windows and Mac OS

Signature

arguments

Type: Integer, Real, String, or List

AutoCAD commands and their options.

The arguments to the command function can be strings, reals, integers, or points, as expected by the prompt sequence of the executed command. A null string (') is equivalent to pressing Enter on the keyboard. Invoking command with no argument is equivalent to pressing Esc and cancels most AutoCAD commands.

Remarks

Autocad Lisp Commands For Dummies

The command function evaluates each argument and sends it to AutoCAD in response to successive prompts. It submits command names and options as strings, 2D points as lists of two reals, and 3D points as lists of three reals. AutoCAD recognizes command names only when it issues a Command prompt.

Note that if you issue command from Visual LISP on Windows, focus does not change to the AutoCAD window. If the command requires user input, you'll see the return value (nil) in the Console window, but AutoCAD will be waiting for input. You must manually activate the AutoCAD window and respond to the prompts. Until you do so, any subsequent commands will fail.

The AutoCAD SKETCH command reads the digitizer directly and therefore cannot be used with the AutoLISP command function. If the AutoCAD SCRIPT command is used with the command function, it should be the last function call in the AutoLISP routine.

Also, if you use the command function in an .lsp or .mnl file, it should be called only from within a defun statement. Rosetta stone version 5 release. Use the S::STARTUP function to define commands that need to be issued immediately when you begin a drawing session.

For commands that require the selection of an object (like the AutoCAD BREAK and TRIM commands), you can supply a list obtained with entsel instead of a point to select the object.

Autocad Lisp Commands

Commands executed from the command function are not echoed to the command line if the AutoCAD CMDECHO system variable (accessible from setvar and getvar) is set to 0.

Note: When command input comes from the AutoLISP command function, the settings of the AutoCAD PICKADD and PICKAUTO system variables are assumed to be 1 and 0, respectively. This preserves compatibility with previous releases of AutoCAD and makes customization easier (because you don't have to check the settings of these variables).

With the introduction of the Action Recorder in AutoCAD 2009, commands were given versions. Commands used at the Command prompt always use the latest version of the specific command. However, commands used in AutoLISP and command macros might work differently. The initcommandversion function is used to determine the version of the next command to be executed.

Examples

The following example sets two variables pt1 and pt2 equal to two point values 1,1 and 1,5. It then uses the command function to issue the AutoCAD LINE command and pass the two point values.

Autocad Lisp Commands

Related Concepts

Autocad Lisp Command Save

Lisp

Autocad Lisp Commands Pdf

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