chr (AutoLISP)

Converts an integer representing a character code into a single-character string

Supported Platforms: Windows and Mac OS

Signature

(chr int)

int

Type: Integer

A numeric value in the range of 1-65536.

Return Values

Type: String

A single character based on the numeric value of int.

Release Information

Releases:

• AutoCAD R12 and later on Windows
• AutoCAD 2011 and later on Mac OS

History

AutoCAD 2021

• int argument previously accepted an ASCII character code, but now accepts a Unicode character code.
• Return value changed from an integer in the range of 1-255 (ASCII character codes) to 1-65536 (Unicode character codes) and might be different than earlier releases. For example, (chr 128) previously returned "€", but now returns "". If you want to return "€", your code will need to be updated to (chr 8364).
• LISPSYS system variable controls which AutoLISP engine is used and the behavior of the function.
  • 0 - ASCII character support (legacy behavior)
  • 1 or 2 - Unicode character support
  Note: After the value of the LISPSYS system variable has been changed, AutoCAD must be restarted for the change to take affect.

Examples

(chr 65)
"A"

(chr 66)
"B"

(chr 97)
"a"

(chr 8364)
"€"