It needed the code "my $buffer = $textview_nav->get_buffer".

Doh!!! I shouldn't have missed that. I see the problem now.... in your code you create the textview (with a an automatic buffer ), and you thought it was using $buffer. 

#my $textview_nav = Gtk2::TextView->new; 
# should have been
my $textview_nav = Gtk2::TextView->new_with_buffer($buffer);

[download]
If you had used new_with_buffer($buffer) , then reading from the global $buffer would have worked. As it now is written, your global $buffer is unused.

P.S. You might also want to add a line to make the textview have the cursor when it opens. 

my $rc = 
Gtk2::Gdk->keyboard_grab($textview_nav->window, 0 ,
                                     Gtk2->get_current_event_time);

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

In reply to Re^3: 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.