freepascal.compiler/docs/typinfex/ex8.pp

program example8;

{ This program demonstrates the SetToString function }

{$mode objfpc}

uses rttiobj,typinfo;

Var
  O : TMyTestObject;
  PI : PPropInfo;

Const
  ConstSet = 'mefirst,methird';
  
Var
  S : TMyEnums;
  
begin
  O:=TMyTestObject.Create;
  O.SetField:=[mefirst,meSecond,meThird];
  PI:=GetPropInfo(O,'SetField');
  Writeln('SetToString (brackets) : ',SetToString(Pi,Integer(O.SetField),True));
  Writeln('SetToString (default)  : ',SetToString(Pi,Integer(O.SetField)));
  O.SetField:=TMyEnums(StringToSet(PI,ConstSet));
  Writeln('Stringtoset            : ',SetToString(PI,Integer(O.SetField)));
  O.Free;
end.