Re: [Tkx] Buffering/Updating issue for text element

[zentara]

I'm not a Tkx guru, but you should never use "sleep" in a GUI app, as it will interfere with the eventloop. As others have pointed out, you can hack around a sleep statement usage, with "$mw->updates" sprinkled around, but that is a poor way to write the code.

Almost always, you avoid the problem by setting up a timer, rather than use sleep. Try taking the sleep(1) out of your code, and see if that speeds up the text inserts. A timer in Tkx would look something like the following.

See Tkx repeat in case you are forced to use after to simulate repeat. I don't know if Tkx has a repeat

# untested pseudocode

sub start{
   my @ids = (1..10);

# repeat may not be available in Tkx.... see link above
  Tkx::repeat(1000, sub { 
       my $id = shift @ids;
     if ($id <= 10){
     $txt_processed_domains->configure(-state => "normal");
     $txt_processed_domains->insert_end( "$id => Available\n" );
     $txt_processed_domains->configure(-state => "disabled");
     } 
      else {  Tkx::tk___messageBox( -message => "Completed!" ); } 
   });
}

[Gangabass]

Thanks for Tkx::repeat but i use sleep only to show the issue. In real code i have HTTP request and text insert after it.

[zentara]

Not to be picky about it, but don't even use sleep to demonstrate a slowdown..... in a GUI it completely gives you bad behavior.

Here is one way to make a non-blocking delay without sleep

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

$|=1;

my $count = 0;
my $loop  = 0;
my $mw    = new MainWindow();

$mw->Label( -textvariable => \$count )->pack;

$mw->Button( -text => 'Start', -command => \&long_job )
  ->pack( -side => 'left' );

$mw->Button( -text => 'Stop', -command => sub { $loop = 0; print "$cou
+nt\n"; } )
  ->pack( -side => 'left' );

MainLoop();

sub long_job {
my $var;
my $timer = $mw->repeat(1000, sub{$var++} ); 

   $loop =1;       
   while($loop){
          $loop++;
          $mw->waitVariable(\$var);
          $count++;
         }
  DoOneEvent();  
}

[Anonymous Monk]

Isn't that a pirate site?