Display Reminders In Gnome Panel

It was a long standing requirement of mine to create a reminder software or something which can keep me reminding of things as I always keep forgetting things. So I made a reminder that displays my reminders on the Gnome Panel.
It looks something like this:

So how do we do it?

1st of all we need to display the program we need in the Add to Panel.

For that we add to the bonobo server list. We do this by adding the following code in the folder /usr/lib/bonobo/servers/. Let us name the file as GNOME_PerlApplet.server
The content of this file should be :

<oaf_server iid=OAFIID:PerlSampleApplet_Factory type=exe location=/home/rsrijith/perl/panel-applet>
<oaf_attribute name=repo_ids type=stringv>
<item value=IDL:Bonobo/GenericFactory:1.0/>
<item value=IDL:Bonobo/Unknown:1.0/>
<oaf_attribute name=name type=string value=Panel Reminder/>
<oaf_attribute name=description type=string value=Perl Program working in Panel/>

<oaf_server iid=OAFIID:PerlSampleApplet type=factory location=OAFIID:PerlSampleApplet_Factory>
<oaf_attribute name=repo_ids type=stringv>
<item value=IDL:GNOME/Vertigo/PanelAppletShell:1.0/>
<item value=IDL:Bonobo/Control:1.0/>
<item value=IDL:Bonobo/Unknown:1.0/>
<oaf_attribute name=name type=string value=Panel Reminder/>
<oaf_attribute name=description type=string value=Perl Program working in Panel:R Srijith/>
<oaf_attribute name=panel:category type=string value=Amusements/>
<oaf_attribute name=panel:icon type=string value=bug-buddy.png/>

So this specifies the location of the perl file to run on adding this applet. So here it is /home/rsrijith/perl/panel-applet . This file should print the reminders to be printed on the panel.
The program need the Following packages:

Perl packages:

  • ExtUtils::Depends
  • ExtUtils::PkgConfig
  • Gnome2::GConf
  • Gnome2::PanelApplet

You install this using

sudo perl -MCPAN -e ‘install ‘

Linux Package:

  • libpanelappletmm-2.6-1c2
  • libpanelappletmm-2.6-dev

You install this using

sudo apt-get install

Thus the perl file content is :

#!/usr/bin/perl -w

use warnings;
use utf8;
use Gnome2::PanelApplet;
Gnome2::Program->init ('A Stupid Applet Written in Perl', '0.01', 'libgnomeui',
sm_connect => FALSE);

Gnome2::PanelApplet::Factory->main ('OAFIID:PerlSampleApplet_Factory',

sub fill {
my ($applet, $iid, $data) = @_;

if ($iid ne 'OAFIID:PerlSampleApplet') {
return FALSE;

my $menu_xml = <<EOX;
<popup name="button3">
<menuitem name="Properties Item"
<menuitem name="DesktopSwitcher Item"
_label="Wallpaper Switcher"
<menuitem name="Walldelete Item"
_label="Wallpaper Delete"
<menuitem name="About Item"

my $cb_mapping = {
Birthdays => [&amp;properties_callback, 'default!'],
DesktopSwitcher => &amp;deskswitcher_callback,
Walldelete => &amp;walldelete_callback,
About => &amp;about_callback,

$applet->setup_menu($menu_xml, $cb_mapping, 'default?');
our $i=0;our @line;

our $label = Gtk2::Label->new;
$label->modify_font(Gtk2::Pango::FontDescription->from_string("Monospace 10"));
$label->modify_fg("normal", Gtk2::Gdk::Color->parse("Black"));
$applet->add ($label);

Glib::Timeout->add (5000, &amp;update_value);
#Glib::Timeout->add (500, &amp;update_list);
sub update_list{
open FILE,"/home/rsrijith/panel_remind";
close FILE;
sub update_value

my @string=split(':',$line[0]);
$label->modify_fg("normal", Gtk2::Gdk::Color->parse($string[0]));

sub deskswitcher_callback
system('/home/rsrijith/shell/deskback 2>>/home/rsrijith/logs/desktopbackground');

sub walldelete_callback
system('/home/rsrijith/shell/deletewall 2>>/home/rsrijith/logs/desktopbackground');

sub properties_callback {
my $b="";
open BDAY,"/home/rsrijith/shell/birthdays1";
{ $b.=$_."n";
my $dialog = Gtk2::MessageDialog->new (undef, [],
'info', 'ok',

sub about_callback {
my $about = Gnome2::About->new ('Panel Reminder', '0.1',
'Perl Program working in Panel',
'© 2009 R.Srijith',
'R.Srijith <rsrijith007@gmail.com');

This program prints the contents of /home/rsrijith/panel_remind
An Example of the content of that file should be as

Blue:Happy Birthday to Mahima

So that’s it!! And Happy Birthday Mahima.

Comment me if you have any doubts or if it’s not working.

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