Under normal conditions, if you just had a plain textview in a normal window, all you would need to do is: 
my $string = $buffer->get_text($buffer->get_start_iter,
                                           $buffer->get_end_iter, 1);
print "$string\n";

[download]
BUT.... since you are trying to get fancy and use popup windows, you are getting some sort of weird focus problem. The popup type of window is specialized and does not have all the features of a full-fledged window. Now I have 2 suggestions:

1. Ask on the Gtk2 Perl maillist and hope one of the real experts answers you. They may not know.

2. Change your popup to a toplevel, and you can remove the WM decorations to make it look like a popup. 

#!/usr/bin/perl
use warnings;
use strict;
use Glib qw/TRUE FALSE/;
use Gtk2 '-init';

# works on any ICCWM compliant window manager

my $window = Gtk2::Window->new();
$window->set_decorated(0);
Gtk2::Window::set_decorated($window, 0);

print $window->get_decorated(),"\n";

$window ->signal_connect( 'destroy' => \&delete_event );

$window->set_border_width(10);
$window->set_size_request(300,200);

my $vbox = Gtk2::VBox->new( FALSE, 6 );
$window->add($vbox);
$vbox->set_border_width(2);

my $hbox= Gtk2::HBox->new( FALSE, 6 );
$vbox->pack_end($hbox,FALSE,FALSE,0);
$hbox->set_border_width(2);


my $button = Gtk2::Button->new_from_stock('gtk-quit');
$hbox->pack_end( $button, FALSE, FALSE, 0 );
$button->signal_connect( clicked => \&delete_event );

$window->set_position('center');

$window->show_all();

Gtk2->main;
#####################################
sub delete_event {
Gtk2->main_quit;
return FALSE;
}

[download]
I'm not really a human, but I play one on earth. Cogito ergo sum a bum

In reply to Re: Gtk2: TextView to file by zentara
in thread Gtk2: TextView to file by deadpickle

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.