[[AgustinOrtu]]

Te dejo la unidad completa:

Código Delphi [-]
unit Unit1;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs;

type

  { TForm1 }

  TForm1 = class(TForm)
    procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
  private
    { private declarations }
  public
    { public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.lfm}

uses
  LCLType;

procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
  if Key = VK_NUMPAD0 then
     ShowMessage('VK_NUMPAD0');

  if Key = VK_MULTIPLY then
     ShowMessage('VK_MULTIPLY');
end;

end.