Dateiversion ermitteln

function GetFileVersion(Path: string): string;
var
  lpVerInfo: pointer;
  rVerValue: PVSFixedFileInfo;
  dwInfoSize: cardinal;
  dwValueSize: cardinal;
  dwDummy: cardinal;
  lpstrPath: pchar;

begin
  if Trim(Path) = EmptyStr then
    lpstrPath := pchar(ParamStr(0))
  else
    lpstrPath := pchar(Path);

  dwInfoSize := GetFileVersionInfoSize(lpstrPath, dwDummy);

  if dwInfoSize = 0 then
  begin
    Result := 'No version specification';
    Exit;
  end;

  GetMem(lpVerInfo, dwInfoSize);
  GetFileVersionInfo(lpstrPath, 0, dwInfoSize, lpVerInfo);
  VerQueryValue(lpVerInfo, '\', pointer(rVerValue), dwValueSize);

  with rVerValue^ do
  begin
    Result := IntTostr(dwFileVersionMS shr 16);
    Result := Result + '.' + IntTostr(dwFileVersionMS and $FFFF);
    Result := Result + '.' + IntTostr(dwFileVersionLS shr 16);
    Result := Result + '.' + IntTostr(dwFileVersionLS and $FFFF);
  end;
  FreeMem(lpVerInfo, dwInfoSize);

end; {function GetFileVersion() ...}

procedure TForm1.Button1Click(Sender: TObject);
begin
  Caption := GetFileVersion('C:\Datei.exe');
end;