http://www.perlmonks.org?node_id=1029912


in reply to Tk Update

Replace your my $lb line with: 
my $lb=update_time($mw)->pack(@top);

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and you update_time subroutine with: 
sub update_time {
    my $mw = shift;
    my $time=UnixDate('now',"The time is: %r on %B %d, %Y");
    my $lbl = $mw->Label(-text=>"$time");
    $mw->update;
    $mw->after(1);
    return $lbl;
}

[download]

Replies are listed 'Best First'.
Re^2: Tk Update
by dabella12 (Acolyte) on Apr 29, 2013 at 15:22 UTC

    The function still does not update the time

[reply]

      How about this?:

      use strict;
use warnings;

use Tk;
use Date::Manip;

my $time = UnixDate('now',"The time is: %r on %B %d, %Y");

my $mw = MainWindow->new( -title => 'Time Test' );

my @pack_opts = qw/-fill both -padx 2 -pady 2 -expand 1/;

my $frm = $mw->Frame( -bd => 2 )->pack;

my $lbl = $frm->Label( -text => $time )->pack(@pack_opts);

my $oper = $frm->Button(
    -text    => "Entrada De Operaciones",
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $client = $frm->Button(
    -text    => 'Informe De Clientes',
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $general = $frm->Button(
    -text    => 'Informe General',
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $util = $frm->Button(
    -text    => 'Utilidades',
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $exit = $frm->Button(
    -text    => 'Exit Application',
    -command => sub { $mw->destroy },
)->pack(@pack_opts);

$mw->repeat( 1000 => sub { update_time() } );

MainLoop;

sub update_time {
    my $time = UnixDate( 'now', "The time is: %r on %B %d, %Y" );
    $lbl->configure( -text => $time );
}

      [download]

      Or even better, with Tk::StrfClock:

      use strict;
use warnings;

use Tk;
use Tk::StrfClock;

my $mw = MainWindow->new( -title => 'Time Test' );

my @pack_opts = qw/-fill both -padx 2 -pady 2 -expand 1/;

my $frm = $mw->Frame( -bd => 2 )->pack;

$frm->StrfClock()->pack(@pack_opts);

my $oper = $frm->Button(
    -text    => "Entrada De Operaciones",
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $client = $frm->Button(
    -text    => 'Informe De Clientes',
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $general = $frm->Button(
    -text    => 'Informe General',
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $util = $frm->Button(
    -text    => 'Utilidades',
    -command => sub { print "Hello World\n" },
)->pack(@pack_opts);

my $exit = $frm->Button(
    -text    => 'Exit Application',
    -command => sub { $mw->destroy },
)->pack(@pack_opts);

MainLoop;

      [download]

      Regards, Stefan

[reply]
[d/l]
[select]

        Thanks that works perfectly</>

[reply]

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