How to change a Hlist column value randomly

[ghosh123]

Hi
I have HList tree with three columns and ten rows.
After launching the gui, I want to change the value of one column
randomly (after every 2,3 or 5 secs). Maximum interval would be 5 but not more than that.

Following is my code, please help me with the last part .
The gui should get launched first. And then every 2,3 or 5 sec the value should start getting changed.
Never mind the values of the cells.

use strict;
use warnings;

use Tk;
use Tk::HList;
use Tk::ItemStyle;

my $mw = MainWindow->new();

my $hlistframe = $mw->Frame()->pack(-fill=> 'both', -expand => 1);

my $font = "{helvetica} -12 bold";
my $hl = $hlistframe->Scrolled('HList',
                    -scrollbars => 'ose',
                    -columns  =>7 ,
                    -header   => 1,
                    -width    => 50,
                    -command => sub {print "AAA\n";},
                    )->pack(-fill => 'both',-expand =>1 );



my $name = $hl->Label(-text => "Name", -anchor => 'w',-font => $font);
$hl->headerCreate(0,-itemtype => 'window',-widget => $name)
;
my $DOB = $hl->Label(-text => "DOB", -anchor => 'w',-font => $font);
$hl->headerCreate(1,-itemtype => 'window',-widget => $DOB);

my  $Address = $hl->Label(-text => "Address", -anchor => 'w',-font => 
+$font);
$hl->headerCreate(2,-itemtype => 'window',-widget => $Address);

my $style1   = $hl->ItemStyle('text', -selectforeground =>'black', -an
+chor =>'nw',-background =>'green',-font => $font); 

my $style2   = $hl->ItemStyle('text', -selectforeground =>'black', -an
+chor
=>'nw',-background =>'red',-font => $font); 
 
&populate();
sub populate
{

  my $path = 0;

  foreach my $entry (1 .. 10)
  {
      insertData($path,$entry);
    $path++;
  }

}


sub insertData
{
   my ($path,$entry) = @_;

   
   $hl->add($path);

   $hl->itemCreate($path,0,-text => "thomas");
   $hl->itemCreate($path,1,-text => "20-10-2000");
   $hl->itemCreate($path,2,-text => "102 street" , -style => $style1);


}

=cut
# please help me with  how to change value of two cells randomly

while(rand)
{
$hl->itemConfigure( 2, 2, -text => "202 street", -style => $style2 );
$hl->itemConfigure( 3, 2, -text => "202 street", -style => $style2 );


}

=cut


MainLoop;

[kcott]

G'day ghosh123,

See "Tk::after - Execute a command after a time delay"; in particular, the "Changing a repeat timer interval" section.

Here's how you might randomly generate 2, 3 or 5:

$ perl -Mstrict -Mwarnings -e '
    my @waits = (2, 3, 5);
    print $waits[int rand @waits] for 1 .. 12;
'
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