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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, MMSystem, StdCtrls, ComCtrls;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    CheckBox1: TCheckBox;
    CheckBox2: TCheckBox;
    CheckBox3: TCheckBox;
    CheckBox4: TCheckBox;
    procedure MMJOY1BUTTONDOWN(var Msg: TMessage); message MM_JOY1BUTTONDOWN;
    procedure MMJOY1BUTTONUP  (var Msg: TMessage); message MM_JOY1BUTTONUP;
    procedure MMJOY1MOVE      (var Msg: TMessage); message MM_JOY1MOVE;
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.MMJOY1BUTTONDOWN(var Msg: TMessage);
begin
  CheckBox1.checked := (Msg.WParam and joy_button1) > 0;
  CheckBox2.checked := (Msg.WParam and joy_button2) > 0;
  CheckBox3.checked := (Msg.WParam and joy_button3) > 0;
  CheckBox4.checked := (Msg.WParam and joy_button4) > 0;
end;

procedure TForm1.MMJOY1BUTTONUP(var Msg: TMessage);
begin
  MMJOY1BUTTONDOWN(Msg);
end;

procedure TForm1.MMJOY1MOVE(var Msg: TMessage);
begin
  Edit1.Text := IntToStr(Msg.LParamLo);  // X
  Edit2.Text := IntToStr(Msg.LParamHi);  // Y
end;

procedure TForm1.FormCreate(Sender: TObject);
var
  myJoyCaps: TJoyCaps;
begin
 joyGetDevCaps(Joystickid1,@myJoyCaps, sizeof(myJoyCaps));
 joySetCapture(self.Handle, Joystickid1, 100, True);
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  joyReleaseCapture(Joystickid1);
end;

end.