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function getversion(datei: String):string;
type
  thilo=record
    case integer of
      0: (all:dword);
      1: (lo:word;hi:word);
    end;

var buffer:pointer;
    dummy:cardinal;
    size:cardinal;
    p:pointer;
    data:^vs_FIXEDFILEINFO;
    hilo:thilo;
begin
  result:='';
  size:=getfileversioninfosize(pchar(datei),dummy);
  getmem(buffer,size);
  if not getfileversioninfo(pchar(application.exename),0,size,buffer) then
  begin
    result := 'Nix eingetragen';
    exit;
  end;
  p:=nil;
  if not verqueryvalue(buffer,pchar(''),p,size) then
  begin
    result := 'Nix eingetragen';
    exit;
  end;
  data:=p;
  hilo.all:=data^.dwFileVersionms;
  result:=inttostr(hilo.hi);
  result:=result+'.'+inttostr(hilo.lo);
  hilo.all:=data^.dwFileVersionls;
  result:=result+'.'+inttostr(hilo.hi);
  result:=result+'.'+inttostr(hilo.lo);
  freemem(buffer);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showmessage(getversion(application.exename));
end;