Delphi in a Nutshell

Name

Chr Function

Syntax

function Chr(IntValue: Integer): AnsiChar;
function Chr(IntValue: Integer): WideChar;

Description

The Chr function converts an integer to its equivalent character, either AnsiChar or WideChar, whichever is called for. Chr is not a real function, and calling Chr has no runtime impact. Delphi automatically maps IntValue into the range needed for the character type (#0..#255 for AnsiChar or #0..#65535 for WideChar).

Tips and Tricks

• The compiler treats the character expressions Chr(27), #27, and ^[ identically, so choose the style you find most readable. For control characters, the caret notation is often best, e.g., ^M for a carriage return. For special characters, a character constant usually works best, e.g., #0 to mark the end of a PChar string. Use Chr to convert variables.

• Calling Chr is identical to using a type cast, but Chr is more familiar to experienced Pascal programmers.

See Also

AnsiChar Type, Char Type, Ord Function, WideChar Type