  This example runs only under Windows 95/98
}
implementation

function RegisterServiceProcess(dwProcessID, dwType: DWORD): DWORD;
  stdcall; external 'KERNEL32.DLL';

procedure TForm1.Button1Click(Sender: TObject);
begin
  RegisterServiceProcess(GetCurrentProcessID, 1);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  RegisterServiceProcess(GetCurrentProcessID, 0);
end;