How to delay without polling?

[nerduke]

can you provide a simple example, without classes (plain pascal)

[Jonax]

I hope this can be of help or inspiration.

I use the Lazarus flavor of pascal:
With one form with just one timer and one label (for showing the time) the whole no class quick example looks like this:

unit Unit1;

{$mode objfpc}{$H+}

interface

uses
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls;

type

{ TForm1 }

TForm1 = class(TForm)
Label1: TLabel;
Timer1: TTimer;
procedure FormCreate(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
private

public

end;

var
Form1: TForm1;
iSeconds: integer;

implementation

{$R *.lfm}


{ TForm1 }

procedure TForm1.Timer1Timer(Sender: TObject);
begin
iSeconds := iSeconds + 1;
label1.Caption := IntToStr(iSeconds) + ' seconds counted.';
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
iSeconds := 0;
end;

end.