freepascal.compiler/docs/typinfex/ex15.pp

program example15;

{ This program demonstrates the GetInt64Prop function }

{$mode objfpc}

uses rttiobj,typinfo;

Var
  O : TMyTestObject;
  PI : PPropInfo;
  
begin
  O:=TMyTestObject.Create;
  Writeln('Int64 property : ');
  PI:=GetPropInfo(O,'Int64Field');
  Writeln('Value            : ',O.Int64Field);
  Writeln('Get (name)       : ',GetInt64Prop(O,'Int64Field'));
  Writeln('Get (propinfo)   : ',GetInt64Prop(O,PI)); 
  SetInt64Prop(O,'Int64Field',12345);
  Writeln('Set (name,12345)    : ',O.Int64Field);
  SetInt64Prop(O,PI,54321);
  Writeln('Set (propinfo,54321) : ',O.Int64Field);
  O.Free;
end.