Hi!

First of all: for the second MainWindow use grid instead of pack, so you don't need all those frames.
I wrote a small script, where you can see how I would do what you want (I hope it is what you want :-)): 

use Tk;

my $top = new MainWindow();
my %density = (
                DI => "1",
                HF => "1.16",
                NH4OH => "0.9",
                H202 => "1.11",
                HCl => "1.18",
                H2SO4 => "1.84",
                Citric => "1",
                NH4F => "1.01",
                TMAH => "1",
                Nitric => "1.415",
                Acetic => "1.05",
                Phosphoric => "1.7",
                IPA  => "0.79"
            );

my $i = 0;
for my $x (keys %density) {
    $top->Radiobutton(
        -value=>$i,
        -command=>[\&colorme, $i])->grid(-row=>$i,-column=>0);
    $top->Label(-text=>$x)->grid(-row=>$i,-column=>1);
    $entry[$i] = $top->Entry(-bg=>'white')->grid(-row=>$i,-column=>2);
    $entry[$i]->insert('end',$density{$x});
    $i++;
}

MainLoop();


sub colorme {
    my $i = shift;
    map{$_->configure(-bg=>'white')}@entry;
    $entry[$i]->configure(-bg=>'black');
}

[download]
Hope this helps.
mawe

In reply to Re: Binding Events In Perl TK by mawe
in thread Binding Events In Perl TK by ~~David~~

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.