Hello Ladies and Gentlemen,

My first steps in Win32:GUI programming have ended here:
my small script shoult display a task bar icon. When I click a mousebutton over the icon, my POP3 account should be checked. The icon should change when new mails are on the server.
Now my problem is that after destroying one icon, i create a new with "AddNotifyIcon...".
The "-id" parameter has to be different from the first icon`s id .
So when I click on the new button (when I have mails) the old button should come up. Now using "AddNotifyIcon..." the id has again to be a new one.
I could solve the problem in generating new ids in a loop but this hurts in my eyes when reading the code.

So how do I make it more elegant?

here is the code i wrote so far:

#!/usr/bin/perl -w

#use strict;
use Win32::GUI;
use Mail::POP3Client;


$main_window = new Win32::GUI::Window(
    -minsize =>    [0, 0],
    -maxsize =>    [0, 0],
    -minwidth =>    0,
    -minheight =>    0,
    -maxwidth =>    0,
    -maxheight =>    0
);

$tray_icon_file_mail_no = new Win32::GUI::Icon("roll.ico") || die "una
+ble to open icon file: $!\n";
$tray_icon_file_mail_yes = new Win32::GUI::Icon("popme.ico") || die "u
+nable to open icon file: $!\n";

main();

########################
sub Check_Mail {

my $pop = new Mail::POP3Client( USER     => "user",
                             PASSWORD => "sn1ffm3",
                             HOST     => "my.pop.host",
                             AUTH_MODE => 'PASS',
                             DEBUG => 0 );

open (TEMP, ">mail.tmp") or die "Cannot open temp file mail.tmp: $!\n"
+;

my $b = $pop->Count();
for (my $i = 1; $i <= $b; $i++) {

   foreach ( $pop->Head( $i ) ) {
         /^From:\s+/i and print $_, "\n" and print TEMP "$_\n";
    /^Subject:\s+/i and print $_, "\n" and print TEMP "$_\n"."***\n";
      }
}
close TEMP;
$pop->Close();
}

#######################
sub Yes_Mail {

##Win32::GUI::NotifyIcon::Delete($main_window, $main_window->TrayIconM
+ailNo->{-id});
##Win32::GUI::DestroyIcon($tray_icon_file_mail_no);
$main_window->{'TrayIconMailNo'}->DESTROY();
$main_window->AddNotifyIcon (
    -icon    => $tray_icon_file_mail_yes,
    -id    => "1",
    -name    => "TrayIconMailYes",
    -tip    => "LupoX POP3 Notifier(TM) - YOU HAVE MAIL"
);


sub TrayIconMailYes_Click()
{
#Win32::GUI::NotifyIcon::Delete($main_window, $main_window->TrayIconMa
+ilYes->{-id});
#Win32::GUI::DestroyIcon($tray_icon_file_mail_yes);
$main_window->{'TrayIconMailYes'}->DESTROY();
main();
print "left_clicked - and mail checked.\n";
}


sub TrayIconMailYes_RightClick()
{    
$main_window->{'TrayIconMailYes'}->DESTROY();
print "right_clicked - mail yes.\n";
return(0);    
}

Win32::GUI::Dialog();
}





sub main {


$main_window->AddNotifyIcon (
    -icon    => $tray_icon_file_mail_no,
    -id    => "0",
    -name    => "TrayIconMailNo",
    -tip    => "LupoX POP3 Notifier(TM)"
);

sub TrayIconMailNo_Click()
{
    Check_Mail();
    print "right_clicked - and mail checked.\n";
    open (TEMP2, "<mail.tmp") or die "Cannot open mail.tmp: $!\n";
    my @mailinfo = <TEMP2>;
    close TEMP2;
    my $nr = @mailinfo;
if ($nr != 0) {
    Yes_Mail();
    }
}


sub TrayIconMailNo_RightClick()
{    
    Check_Mail();
    print "right_clicked - and mail checked.\n";
    open (TEMP2, "<mail.tmp") or die "Cannot open mail.tmp: $!\n";
    my @mailinfo = <TEMP2>;
    close TEMP2;
    my $nr = @mailinfo;
if ($nr != 0) {
    Yes_Mail();
    }
}

sub TrayIconMailNo_MouseEvent($)
{
    my $msg = shift;
    #print "mouse_event: $msg\n";
    # 512 mouse over icon
       if ($msg == 512) { print "mouse over icon\n"; }
    elsif ($msg == 513) { print "left button clicked\n"; }
    elsif ($msg == 514) { print "left button released\n"; }
    elsif ($msg == 515) { print "left button doubleclicked\n"; }
    elsif ($msg == 516) { print "right button clicked\n"; }
    elsif ($msg == 517) { print "right button released\n"; }
    elsif ($msg == 518) { print "right button doubleclicked\n"; }
    elsif ($msg == 519) { print "middle button clicked\n"; }
    elsif ($msg == 520) { print "middle button released\n"; }
    elsif ($msg == 521) { print "middle button doubleclicked\n"; }
    else                { print "unknown event: $msg\n"; }

    # 513 left click
    # 514 left released
    # 515 left double click
    
    # 516 right click
    # 517 right released
    # 518 right double click
    
    # 519 middle click
    # 520 middle released
    # 521 middle double click

}
Win32::GUI::Dialog();
}
[download]

Thank you for any critics.
Sorry to all real perl masters if my question is boring for you....

Have a good time...
Georg
perlmonks@viot.de