Here's how you code would look in order to do what I think you are trying to do (and this is how it looks when you put <code> and </code> tags around the script, as described in Writeup Formatting Tips): 
use Tk; 
use strict; 
my $mw = MainWindow->new; 
$mw->configure(-title => 'Verify User',-background =>'blue'); 
$mw->geometry('+100+300');

my $name = '';  # declare a variable for the value of "name"

my $vu_frml = $mw->Frame(-relief=>'groove',
                         -borderwidth => 3,
                         -background =>'blue', 
                        )->pack(-side => 'top', -fill => 'x');

my $vu_lb1 = $vu_frml->Label(-text =>'name',
                             -background=>'blue',
                             -foreground=>'white',
                            )->pack(-side=>'left'); 

# use that "name" variable with this Entry widget:
my $vu_enl = $vu_frml->Entry(-width =>9,
                             -textvariable => \$name,
                             -background => white'
                            )->pack(-side=>'left',-pady=>3); 

$mw->Button( -background=>'blue',
             -foreground=>'white',
             -text => 'ok',
             -command => sub { # use the variable again here:
                 $mw -> Label(-textvariable => \$name,
                              -font => "fixed", )-> pack; 
             }, )->pack(-side => 'top', -fill => 'x');
MainLoop;

[download]
The docs for both Tk::Label and Tk::Entry describe how the "-textvariable" attribute is used. It's very handy.

In reply to Re: perl tk by graff
in thread perl tk by caboose

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.