@BrowserUk,

thanks for your contribution. Your approach seems to be the most straightforward. It is simple and powerful. With this approach (at least on my platform) you don't even need require. You can go ahead and use Tk.

Believe it or not, the following code works:
use Tk;

use threads;
use Thread::Queue;

my $q = Thread::Queue->new();

my $thr = threads->create(sub
{

######################################################
# thread working on input received from Tk MainWindow

do
{

my $item = $q->dequeue();

print "Received: $item\n";

}
while(1);

######################################################

})->detach();

######################################################
# here comes the Tk stuff

$mw=new MainWindow;

$mw->repeat(1000,\&handler);

MainLoop;

sub handler
{
$i++;
$q->enqueue("command $i");
}

######################################################

[download]

In reply to Re^4: bidirectional pipe freezing by chessgui
in thread bidirectional pipe freezing by chessgui

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