windows - How to determine if a screensaver is running in Java?

Question

My Application periodicly shows information on the screen. But if the screenshot is active, the application should wait until the user returns.

Is there any way to determine if the screensaver is running?

I don't need a clean solution, u just needs to work on windows xp.

Similar question, but other technology: How to determine that a screensaver is running?

Answer 1

Well, this is absolutely not clean, but it works as a dirty workaround:

I checks if 'any' screensaver (which have .SCR suffix) is running.

  private static boolean isScreensaverRunning() {
    List<String> p = WindowsUtils.listRunningProcesses();
    for (String s : p) {
      if (s.endsWith(".SCR")) {
    return true;
      }
    }
    return false;
  }

  public static List<String> listRunningProcesses() {
    List<String> processes = new ArrayList<String>();
    try {
      String line;
      Process p = Runtime.getRuntime().exec("tasklist.exe /fo csv /nh");
      BufferedReader input = new BufferedReader
      (new InputStreamReader(p.getInputStream()));
      while ((line = input.readLine()) != null) {
      if (!line.trim().equals("")) {
          // keep only the process name
          line = line.substring(1);
      processes.add(line.substring(0, line.indexOf(""")));
      }

      }
      input.close();
    }
    catch (Exception err) {
      err.printStackTrace();
    }
    return processes;
  }

Source of listRunningProcesses: http://www.rgagnon.com/javadetails/java-0593.html