docs: public static InputStream getInputStream(String strFilename, App app)
     {
         InputStream streamIn = null;
         if ((strFilename != null) && (strFilename.length() > 0))
         {
             try   {
                 URL url = null;
                 if (strFilename.indexOf(':') != -1)
                     url = new URL(strFilename);
                 if (url == null)
                     if (app != null)
                         url = app.getResourceURL(strFilename, null);
                 if (url != null)
                     streamIn = url.openStream();
             } catch (Exception ex)  {
                 streamIn = null;
             }
             if (streamIn == null)
             {
                 File file = new File(strFilename);
                 try   {
                     streamIn = new FileInputStream(file);
                 } catch (FileNotFoundException ex)  {
                     streamIn = null;
                 }
             }
         }
         return streamIn;
     }