My application displays the content of a log file into a TextField using Win32::GUI.
The number of lines displayed is set inside a config file and I want to reload the file when the user click a menu item "Reload Config" and to reset the maximum number of line to display.
For test purpose I disabled all threads and process that are creating a lot of logs and I just printed the value of my variable.
When I close the application I can see the variable value correctly updated. Can somebody give me a hint?
Thanks a lot in advance!
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My code is something like that :
# Init my variables
my $liveview_max_line;

# Load the configuration file
load_cfg("myconf.cfg");

# Let's create the logger
my $log_conf = q(
    log4perl.category         = ALL,Logfile
    log4perl.appender.Logfile.filename = sub { return get_log_fn(); }
    log4perl.appender.Logfile.mode = append
    log4perl.appender.Logfile = Log::Dispatch::FileRotate
    log4perl.appender.Logfile.max         = sub { return get_max_file(
+); }
    log4perl.appender.Logfile.size         = sub { return get_max_file
+_size(); }
    log4perl.appender.Logfile.DatePattern = yyyy-MM-dd
    log4perl.appender.Logfile.TZ          = PST
    log4perl.appender.Logfile.layout = PatternLayout
    log4perl.appender.Logfile.layout.ConversionPattern = %m %n
);
Log::Log4perl::init( \$log_conf );
my $logger = Log::Log4perl::get_logger();

# Make Menu
my $Menu = Win32::GUI::MakeMenu(
    " &?"             => { -name => "Help",       -enabled => 1  },
    " > &Reload"            => { -name => "Reload",      -onClick => \
+&gw_OnClick },
);

... other items added here

# Create Textfield for Edit Text
$mw->AddTextfield(
    -name      => "Edit",
    -pos       => [0, 0],
    -size      => [100, 100],
    -multiline => 1,
    -hscroll   => 1,
    -vscroll   => 1,
    -autohscroll => 1,
    -autovscroll => 1,
    -keepselection => 1 ,
    -font => $EditFont,
    -readonly => 1,
);

... build the gui and show the main window with Win32::GUI::Dialog();


#Functions

sub gw_OnClick {
  load_cfg("myconf.cfg");
  log2file(2,"Configuration Reloaded");
  0;
}

sub log2file {
  my $lvl=shift;
  my $msg=shift;
  my ($epochseconds, $microseconds) = gettimeofday;
  my ($second, $minute, $hour,$d,$m,$y) = localtime($epochseconds);
  my $time= sprintf("%02d/%02d/%04d %02d:%02d:%02d.%03.3s", $d,($m+1),
+ ($y+1900), $hour, $minute, $second, $microseconds);
  my $txt="";   
  #Use the log 4 perl module.
  $txt = $time." - ERROR - ".$msg if ($lvl == 0);
  $txt = $time." - WARN - ".$msg if ($lvl == 1);
  $txt = $time." - INFO - ".$msg if ($lvl == 2);  
  $logger->error($txt) if ($lvl == 0);
  $logger->warn($txt) if ($lvl == 1);
  $logger->info($txt) if ($lvl == 2);
  update_text($txt);
  return 1;
}


sub update_text {
  my $txt = shift;
  print "$liveview_max_line\n";
  if (exists $mw->{Edit}){
    if ($mw->Edit->GetLineCount() >= $liveview_max_line) {
      my $NewText = $mw->Edit->Text;
      $NewText =~ s/.*\n//;
      $mw->Edit->Text($NewText);
      $mw->Edit->EmptyUndoBuffer();
      $mw->Edit->Modify(0);
      $mw->Edit->SetFocus();
    }
  }  
  $mw->Edit->Clear() if exists $mw->{Edit};
  $mw->Edit->Append("$txt\r\n") if exists $mw->{Edit};
}
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