Re: If the text widget does not have the focus, the selection tag is not visible

[Anonymous Monk]

Use strict warnings and diagnostics or die :)

#!/usr/bin/perl --
use strict;
use warnings;

use Tk;
my $mw = MainWindow->new;
my $filename;

# Create necessary widgets
my $f = $mw->Frame->pack( -side => 'top', -fill => 'x' );
$f->Entry( -textvariable => \$filename )->pack(
  -side   => 'left',
  -anchor => 'w',
  -fill   => 'x',
  -expand => 1
);
$f->Button( -text => "Exit", -command => sub { exit; } )
  ->pack( -side => 'right' );

my $t = $mw->Scrolled("Text")->pack(
  -side   => 'bottom',
  -fill   => 'both',
  -expand => 1,
);
$t->insert( end => join "\n", 1 .. 10 );
$t->focus;

$t->bind(
  '<<Selection>>',
  sub {

#~     warn @_;
    my ($t) = @_;

    $t->tagDelete('ssel');
    if ( my (@range) = $t->tagRanges('sel') ) {
      $t->tagAdd( ssel => @range );
      for my $opt (qw' foreground background ') {
        $t->tagConfigure( ssel => "-$opt" => $t->cget("select$opt") );
      }
    } ## end if ( my (@range) = $t->tagRanges...)
    return;
  }
);
$t->bind(
  '<FocusOut>',
  sub {
    my ($t) = @_;

#~     print $t->getSelected;
#~     use Data::Dumper; print Dumper([ $t->tagConfigure('ssel') ]);
#~     use Data::Dumper; print Dumper([ $t->tagNames ]);
#~     use Data::Dumper; print Dumper([ $t->tagRanges('sel') ]);
    return;

  }
);

MainLoop;