extern "C" __declspec( dllimport ) __stdcall BOOL EP_CheckupIsEnigmaOk();

function EP_CheckupIsEnigmaOk : boolean;

Public Declare Function EP_CheckupIsEnigmaOk Lib "enigma_ide.dll" () As Byte

public class Enigma_IDE
{
    [DllImport("enigma_ide.dll", CallingConvention = CallingConvention.StdCall)]
    public static extern bool EP_CheckupIsEnigmaOk();
}

uses 
  enigma_ide; // the module contains a definitions of Enigma API

// Check, if crc of Enigma protection is ok or no
if EP_CheckupIsEnigmaOk then
begin
  MessageBox(0, 'Protection CRC is good!'#10#13'Everything is well, we can complete the job!', 'Application', MB_OK or MB_ICONINFORMATION);
end else
begin
  MessageBox(0, 'Protection is changed/cracked...', 'Application', MB_OK or MB_ICONERROR);
end;