Due to better readability, in the names of some functions not only lower but also upper case characters are used. You can, however, use either case in function calls.
| Function |
Description |
| (command arguments ...) |
Executes a built-in command with the arguments supplied |
| (delcmd string) |
Deactivates a specified command
 command name |
| (actcmd string) |
Re-activates a specified command
command name |
| (getcname string) |
Retrieves the primary (underscored) name of a built-in command. A primary command has always an English name
command name |
| (getvar string) |
Retrieves system variable settings
variable name |
| (setvar string value) |
Sets a system variable to a specified value
variable name
variable value |
| (findfile string [value]) |
Searches for a file
file name
condition |
| (getfiled string string string integer) |
Provides a dialog for file selection
Dialog caption
Preset filename
Preset extension
Control flag |
| (getcolorindex [point_list] [flag]) |
Displays the Colors dialog box allowing the user to select a color |
| (initdia [flag]) |
Determines that certain commands which normally invoke a dialog box be performed at the command line when flag is set to 0. |
| Function |
Description |
| (distance point_list point_list) |
Calculates the distance between two given points
starting point
end point |
| (angle point_list point_list) |
Calculates the angle between two point
starting point
end point |
| (polar point_list real real) |
Returns a 3D point
point
angle
distance |
| (inters point_list point_list point_list point_list [value]) |
Returns the intersection of two lines each specified by two endpoints |
| (osnap point_list string) |
Snaps to a significant point on an entity (object snap) |
| (textbox list) |
Returns the corners of a bounding box of a text entity |
| Function |
Description |
| (initget [integer] [string]) |
Initializes the next user input function |
| (getreal [string]) |
Prompts the user to enter a real number |
| (getstring [value] [string]) |
Prompts the user to enter a string |
| (getpoint [point_list] [string]) |
Prompts the user to specify a point |
| (getcorner point_list [string]) |
Prompts the user to specify a second corner of an rectangle |
| (getdist [point] [prompt]) |
Prompts the user to specify a distance |
| (getangle [point_list] [string]) |
Prompts the user to specify an angle |
| (getorient [point_list] [string]) |
Prompts the user to specify an angle takes into account ANGBASE) |
| (getkword [string]) |
Prompts the user to select an option |
| (getint [string]) |
Prompts the user to enter an integer value |
| Function |
Description |
| (ssget [string] [point [point]] [point_list] [assoc_list]) |
Creates a selection set.
. mode
point
point
point list
filter list |
| (ssadd [Ename [SelSet]]) |
Adds an entity to a selection set
entity name
selection set |
| (ssdel Ename SelSet) |
Deletes an entity from a selection set
entity name
selection set |
| (sslength SelSet) |
Returns the length of a selection set
selection set |
| (ssname SelSet integer) |
Returns the n-th element of a selection set
selection set
element number |
| (ssmemb Ename SelSet) |
Verifies if an entity is member of a selection set
entity name
selection set |
| (ssdbno SelSet) |
Returns the drawing database number (id) the selection set belongs to
selection set |
| Function |
Description |
| (dictadd dictionary item newobj) |
Adds a non-graphical object to the specified dictionary |
| (dictnext dictionary [flag]) |
Retrieves the next item in a dictionary |
| (dictremove dictionary item) |
Removes an entry from the specified dictionary |
| (dictrename dictionary old new) |
Renames an item of a dictionary |
| (dictsearch dictionary item [next]) |
Searches a dictionary for an item |
| (namedobjdict) |
Returns the entity name of the current drawing's named object dictionary, which is the root of all non-graphical objects in the drawing |
| Function |
Description |
| (+ number number ...) |
Addition |
| (- number number ...) |
Subtraction |
| (* numbernumber ...) |
Multiplication |
| (/ number number ...) |
Division |
| (~ integer) |
Bitwise NOT |
| (1+ number) |
Increment |
| (1- number) |
Decrement |
| (abs number) |
Absolute value of a number |
| (atan number [number]) |
Arc tangent of an angle supplied in radians |
| (cos number) |
Cosine of an angle |
| (exp number) |
Returns e raised to power number, where e is the base of the natural logarithm |
| (expt number1 number2) |
Returns number1 to number2 |
| (fix number) |
Converts a real number to an integer |
| (float number) |
Converts a given number into a real number |
| (gcd number number ...) |
Returns the greatest common denominator of the given numbers |
| (log number) |
Returns the natural logarithm of a given number |
| (logand integer integer ...) |
Logical bitwise AND |
| (logior integer integer ...) |
Logical bitwise OR |
| (lsh integer integer) |
Logical bitwise shift |
| (max number number ...) |
Returns the largest number |
| (min number number ...) |
Returns the smallest number |
| (minusp number) |
Tests if the number is negative |
| pi |
Constant 3.141593 |
| (rem number1 number2) |
Divides number1 by number2 and returns the remainder |
| (sin number) |
Sine of an angle |
| (sqrt number) |
Square root of a number |
| (tan number) |
Tangent of an angle |
| (zerop number) |
Zero or floating-point zero |
| Function |
Description |
| (atom term) |
Returns T if term is an atom |
| (atoms-family 0|1 [string_list]) |
Returns a list of all atoms currently defined |
| (boundp value) |
Tests if the specified atom has a value |
| (not argument) |
Returns T if argument is nil |
| (null object) |
Returns T if argument is nil |
| (numberp object) |
Returns T if its argument is any kind of number |
| (quote object) |
Simply returns object |
| 'object |
Identical to (quote ...) |
| (set symbol value) |
Sets the value of an quoted symbol to an expression |
| (setq symbol value [symbol value] ...) |
Sets the value of a symbol to an expression |
| (type object) |
Returns the data type |
| Function |
Description |
| (prin1 [object [FileDescriptor]]) |
Prints a message in the Command Window or writes it to an open file |
| (princ [object [FileDescriptor]]) |
Prints a message in the Command Window or writes it to an open file |
| (print [object [FileDescriptor]]) |
Prints a message in the Command Window or writes it to a file (like prin1, but with a preceding CR and a space following) |
| (prompt string) |
Displays a message in the Command Window |
| (terpri) |
Outputs a new-line in the Command Window |
| (grread [integer [integer]]) |
Reads from an input device
draw mode
cursor type |
| (redraw [string [integer]]) |
Refreshes the current drawing display or redraw an entity
entity name
mode |
| (graphscr) |
Closes the Command Window |
| (textscr) |
Opens the Command Window |
| (textpage) |
Opens the Command Window |
| Function |
Description |
| (read string) |
Retrieves the first atom or list from the given string and returns it according to its data type |
| (read-char [FileDescriptor]) |
Reads a single character from either the keyboard buffer or from an open file optionally |
| (read-line [FileDescriptor]) |
Reads a string from the keyboard buffer or from an open file optionally |
| (strcase string [value]) |
Converts a given string to a new upper case or lower case string |
| (strcat string string ...) |
Returns a new string concatenating two or more strings |
| (strlen string string ...) |
Returns the sum of the length (number of characters) of all strings given as argument to the function |
| (substr string integer [integer]) |
Returns a new - partial - string based on a given string |
| (write-char integer [FileDescriptor]) |
Writes a single character to a file displays it in the Command Window |
| (write-line string [FileDescriptor]) |
Writes a string to a file or displays it in the Command Window |
| (stringsort list) |
Sorts a list of string-items alphabetically, ascending |
| (acad_strlsort list) |
Sorts a list of strings in alphabethical order |
| (wcmatch string string) |
Allows a wild card pattern match search on a string
|
| Function |
Description |
| (vl-string->list string) |
Converts a string to a list of character codes |
| (vl-string-elt string position) |
Returns an ASCII code of the character at a specified position (the first character is position 0) |
| (vl-string-left-trim characters string) |
Removes the specified characters from the beginning of a string |
| (vl-string-mismatch string1 string2 [position1 [position2 [case_flag]]]) |
Returns the length of the longest common substring of two text strings, starting at specified positions |
| (vl-string-position code string [position [backward]]) |
Searches a string for a character with a specified code, starting at a specified position. Both forward and backward searches are possible |
| (vl-string-right-trim characters string) |
Removes the specified characters from the end of a string |
| (vl-string-search pattern string [position]) |
Searches a string for a specified pattern, starting at a specified position |
| (vl-string-subst new pattern string [position]) |
Substitutes a character sequence within a string for another, starting at a specified position
|
| (vl-string-translate set1 set2 string) |
Replaces characters of one set in a string with characters of another set |
| (vl-string-trim characters string) |
Removes the specified characters from the beginning and end of a string |
| Function |
Description |
| (= atom atom ...) |
Comparison: Equal |
| (/= atom atom ...) |
Comparison: Not equal |
| (< atom atom ...) |
Comparison: Less than |
| (<= atom atom ...) |
Comparison: Less than or equal |
| (> atom atom ...) |
Comparison: Greater than |
| (>= atom atom ...) |
Comparison: Greater than or equal |
| (and term term ...) |
Logical AND |
| (or value value ...) |
Logical OR |
| (boole bit_value integer integer ...) |
Performs a general bitwise Boolean function |
| (eq term term) |
Evaluates if two terms are identical |
| (equal value value [number]) |
Tests if two expressions have the same result |
(cond
(value value value ... )
[(value value value ... )] ...
) |
Is the primary conditional function |
(if <value> <value>
[<value> value value [value]
) |
Performs an conditional evaluation
test expression
then expression
[else expression] |
| (repeat integer value ...) |
Executes a given expression n times |
| (while value value ...) |
The while construct allows iteration to continue until the specified expression evaluates to nil |
| Function |
Description |
| (append list list ...) |
Adds any number of lists together. Returns a new list |
| (assoc value assoc_list) |
Searches an association list assoc_list for key |
| (car list) |
Returns the first element of an list |
| (cdr list) |
Returns a new list without the first element of a given list |
| (c????r list) |
Combinations of car and cdr up to four levels |
| (cons value list|atom) |
Constructs a new list |
| (foreach symbol list value ...) |
Steps through a given list assigning each element to the specified symbol and evaluating the specified expression for each element of the list |
| (last list) |
Returns the last element of a list |
| (length list) |
Returns the number of elements in a list |
| (list value ...) |
Creates a list out of expressions supplied as arguments to the function |
| (listp value) |
Verifies if element is a list |
| (mapcar func_symb list_1 ... list_n) |
Operates on successive elements of the lists list_1 ... list_n |
| (member value list) |
Searches the given list for an element and returns the remaining portion of the list |
| (nth integer list) |
Returns the nth element of list (n counting starts with 0) |
| (reverse list) |
Reverses the given list and returns a new list |
| (subst old_element new_element list) |
Copies a list substituting old_element by new_element |
| Function |
Description |
| (close FileDescriptor) |
Closes the specified open file |
| (load FileName [value]) |
Loads an existing Lisp file |
| (open FileName FileMode) |
Open the specified file to read or write.
FileMode can be:
"r" open file to read<br />
"w" open file to write<br />
"a" open file to append |
| (vl-file-copy source destination [append]) |
Copies the contents of a source file to a destination file |
| (vl-file-delete file) |
Removes the file with a specified name |
| (vl-file-directory-p name) |
Verifies if the argument is a folder name |
| (vl-file-rename old new) |
Renames a file or a folder |
| (vl-file-size name) |
Determines the size of a file in bytes |
| (vl-file-systime name) |
Determines the date and time when a file has last been modified |
| (vl-filename-base name) |
Extracts the plain file name (without path and extension) from a file name |
| (vl-filename-directory name) |
Extracts out the path from a full file name |
| (vl-filename-extension name) |
Returns the extension of a file name |
| (vl-filename-mktemp [pattern] [folder [extension]]) |
Calculates a unique file name(i.e., different from names of the existing files) for a temporary file |
| Function |
Description |
| (apply func_symbol list) |
Executes a function, where arguments are taken from list |
| (eval value) |
Returns the result of a Lisp expression |
| (exit) |
Terminates the current application |
| (lambda argument_list value ...) |
Allows the definition of an anonymous function |
| (progn value value ...) |
Evaluates one expression after the other grouped in progn. |
| (quit) |
Terminates (cancels) the current application and returns to the command prompt. |
| (*settrace* [integer [integer]] ) |
Sets the mode for tracing of Lisp routines and functions.
Trace mode
Time in seconds |
| Function |
Description |
| (load_dialog string) |
Loads a dialog box description file (file of type .dcl)
File name |
| (unload_dialog number) |
Unloads a dialog box
ID |
| (new_dialog dialog_name dialog_id [default_action [position]]) |
Displays a dialog box |
| (start_dialog) |
Starts the dialog box |
| (done_dialog [flag]) |
Terminates the dialog box
status |
| (term_dialog) |
Terminates all dialog boxes |
| (action_tile key expression) |
Respond when a dialog box tile is clicked |
| (mode_tile key mode) |
Sets the mode of a dialog box tile |
| (get_tile key) |
Determines the value a tile of a dialog box is set to |
| (get_attr key) |
Determines the attribute a key of a dialog box is set to |
| (set-tile key value) |
Sets the value of a dialog box tile |
| (client_data_tile tile_key data) |
Associates data with a dialog box tile |
| Function |
Description |
| (vlax-curve-getArea ename) |
Calculates the area inside a curve or polyline |
| (vlax-curve-isClosed ename) |
Determines whether an entity is closed (that is, its start and end point coincide) |
| (vlax-curve-isPlanar ename) |
Determines whether an entity is planar |
| (vlax-curve-isPeriodic ename) |
Determines whether a curve is periodic |
| (vlax-curve-getStartPoint ename) |
Finds coordinates of the start point of a specified entity |
| (vlax-curve-getEndPoint ename) |
Finds the coordinates of the end point of a specified entity |
| (vlax-curve-getPointAtDist ename distance) |
Finds the coordinates of the point on an entity and at a specified distance from the start point |
| (vlax-curve-getDistAtPoint ename point) |
Finds the distance between the start point of an entity and a specified point on the entity |
| (vlax-curve-getClosestPointTo ename point [extension]) |
Finds the coordinates of the point that is on an entity and is the closest to a specified point |
| (vlax-curve-getClosestPointToProjection ename point normal [extension]) |
Finds the coordinates of the point that is on an entity and, after projection onto a specified plane, is the closest to a specified point |
| (vlax-curve-getStartParam ename) |
Calculates the value of the parameter at the start point of a specified entity |
| (vlax-curve-getEndParam ename) |
Calculates the value of the parameter at the end point of a specified entity |
| (vlax-curve-getParamAtDist ename distance) |
Calculates the value of the parameter at a point that is at a specified distance from the starting point on a specified entity |
| (vlax-curve-getParamAtPoint ename point) |
Calculates the value of the parameter at a specified point on a specified entity |
| (vlax-curve-getDistAtParam ename parameter) |
Calculates the length of the section of an entity between start point and the point which has a specified value of the parameter |
| (vlax-curve-getPointAtParam ename parameter) |
Finds a point of an entity which has a specified value of the parameter |
| (vlax-curve-getFirstDeriv ename parameter) |
Computes the first derivative at a specified point on a specified entity |
| (vlax-curve-getSecondDeriv ename parameter) |
Computes the second derivative at a specified point on a specified entity |