program Project1;

{$APPTYPE CONSOLE}

uses Classes;

type
 Thread = class(TThread)
  procedure Execute; override;
 end;

procedure Thread.Execute;
begin
 writeln('lol');
end;

begin
 Thread.Create(false);
end.

unit Unit1;

interface

uses Forms, StdCtrls, Classes, Controls;

type
 TForm1 = class(TForm)
  Label1: TLabel;
  procedure FormCreate(Sender: TObject);
 end;

 Thread = class(TThread)
  procedure Execute; override;
 end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure Thread.Execute;
begin
 Form1.Label1.Caption:='lol';
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
 Thread.Create(false);
end;

end.