uses BDE; 

{Without the Registry:} 

procedure TForm1.Button1Click(Sender: TObject); 
var 
  ThisVersion: SYSVersion; 
begin 
  DbiGetSysVersion(ThisVersion); 
  ShowMessage('BORLAND DATABASE ENGINE VERSION = ' + IntToStr(ThisVersion.iVersion)); 
end; 

{With the Registry:} 

function GetBDEVersion: string; 
var 
  h: hwnd; 
  ptr: Pointer; 
  proc: TSYSVerProc; 
  ver: SYSVersion; 
  idapi: string; 
  reg: TRegistry; 
begin 
  try 
    reg.RootKey := HKEY_CLASSES_ROOT; 
    reg.OpenKey('CLSID\{FB99D710-18B9-11D0-A4CF-00A024C91936}\InProcServer32', False); 
    idapi := reg.ReadString(''); 
    reg.CloseKey; 
  finally 
    reg.Free; 
  end; 
  Result := '<BDE Bulunamadi>'; 
  h      := LoadLibrary(PChar(idapi)); 
  if h <> 0 then  
    try 
      ptr := GetProcAddress(h, 'DbiGetSysVersion'); 
      if ptr <> nil then  
      begin 
        proc := ptr; 
        Proc(Ver); 
        Result := IntToStr(ver.iVersion); 
        Insert('.', Result, 2); 
      end; 
    finally 
      FreeLibrary(h); 
    end; 
end;