System.Character.TCharHelper.IsDefined

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Delphi

function IsDefined: Boolean; overload;
class function IsDefined(const S: string; Index: Integer): Boolean; overload; static;
class function IsDefined(C: UCS4Char): Boolean; overload; static;

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.Character.pas	System.Character	TCharHelper

Description

Determines whether the UTF-16 character is defined in the Unicode specifications.

This method has 3 different signatures:

1. No parameters needed. Returns True if the UTF-16 character is defined in the Unicode specifications.
2. Returns True if the character at Index in string S is defined in the Unicode specifications.
3. Returns True if the UCS4Char is defined in the Unicode specifications.

See Also

• System.SysUtils.TEncoding

• System.Character.IsDefined