#!/usr/bin/perl --
use strict;
use warnings;
use Tk;
Main( @ARGV );
exit( 0 );
sub Main {
    return MainTk( @_ );
}

sub MainTk {
    my $mw = Tk::MainWindow->new( -title => "Log Viewer", );
    $mw->Label( -text => "DEVICE:" )->grid(
        -column => 1,
        -row    => 1,
        -sticky => "e",
        -padx   => 5,
        -pady   => 5,
    );
    $mw->Label( -text => "START TIME:" )->grid(
        -column => 1,
        -row    => 2,
        -sticky => "e",
        -padx   => 5,
        -pady   => 5,
    );
    $mw->Label( -text => "END TIME:" )->grid(
        -column => 3,
        -row    => 2,
        -sticky => "e",
        -padx   => 5,
        -pady   => 5,
    );
    $mw->Label( -text => "VALUE" )->grid(
        -column => 1,
        -row    => 3,
        -sticky => "e",
        -padx   => 5,
        -pady   => 5,
    );

    my( $device, $stime, $etime, $value ) = 1 .. 10;

    $mw->Entry(
        -width        => 14,
        -textvariable => \$device,
      )->grid(
        -column => 2,
        -row    => 1,
        -sticky => "we",
        -padx   => 5,
        -pady   => 5,
      );

    $mw->Entry(
        -width        => 10,
        -textvariable => \$stime,
      )->grid(
        -column => 2,
        -row    => 2,
        -sticky => "we",
        -padx   => 5,
        -pady   => 5,
      );

    $mw->Entry(
        -width        => 10,
        -textvariable => \$etime
      )->grid(
        -column => 4,
        -row    => 2,
        -sticky => "we",
        -padx   => 5,
        -pady   => 5,
      );

    $mw->Entry(
        -width        => 50,
        -textvariable => \$value,
      )->grid(
        -column     => 2,
        -row        => 3,
        -columnspan => 3,
        -sticky     => "we",
        -padx       => 5,
        -pady       => 5
      );

#~     $mw->Button( -text => "RUN", -command => [ \&onRun, \$etime, \$stime, \$value, \$device ] )->grid(
    my $onRun = sub {
        print "$etime $stime $value $device\n";
    };
    $mw->Button( -text => "RUN", -command => $onRun, )->grid(
        -column     => 1,
        -row        => 5,
        -columnspan => 4,
        -sticky     => "we",
        -padx       => 5,
        -pady       => 5,
    );
    $mw->MainLoop;
} ## end sub MainTk

sub onRun {
    my( $etimeref , $stimeref, $valueref, $deviceref ) = @_;
    use Data::Dump qw/ dd /;
    dd( { map {; "$_" => "$$_" ;} @_ });
} ## end sub onRun