I'm in the process of getting my icewm window manager set up for my liking, and I came upon a problem with putting 'ps' in the icewm menu. The problem it seems, is that if you start an xterm and -e ps, the xterm will close upon completion of ps. I tried a few tricks like -e a bash shell first, but to no avail, so I decided this might be a good job for Tk. It includes a left-click update, and a right-click close, for quick operation. Plus, with wrapping turned off, you can scroll right and see the family trees.
#!/usr/bin/perl
use warnings;
use strict;
use Tk;
use IPC::Open3;

$|=1;
my $pid = open3(\*IN,\*OUT,0,'/bin/sh');

my $mw = new MainWindow(-title=>'Left Click->Update   Right Click->Clo
+se');

$mw->fontCreate('medium',
      -family=>'courier',
      -weight=>'bold',
         -size=>int(-14*14/10));

my $text = $mw->Scrolled('Text',
                       -bg => 'black',
                      -fg => 'lightsteelblue',
                      -width => 130,
                     -height => 30,
                     -font => 'medium',
                     -wrap => 'none'
                     )->pack;

$mw->fileevent(\*OUT,'readable',\&get_from);

$mw->bind('<ButtonPress-1>' => sub{
                $text->delete('1.0','end');
                $text->update;
                print IN "ps auxww --forest\n";
                });

$mw->bind('<ButtonPress-3>' => sub{ exit });

print IN "ps auxww --forest\n";

MainLoop;

sub get_from {
  my $pstext = (<OUT>);
  $text->insert('end',$pstext);
  $text->see('1.0');
 }
__END__

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In reply to tk-ps by zentara

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