Hi,

You can disable the Button from inside the -command callback like so:

use strict;
use warnings;
use Tk;
require Tk::BrowseEntry;

#########################
#Hitting the button casuses many instances of listBrowse widget
########################

my $listButton;
my $main= MainWindow->new();
$listButton=$main->Button(  
        -text=>   'list',
        -height=>  2,
        -width=>   10,
        -relief=>  'ridge',
        -command=> sub{listBrowse();
                       $listButton->configure(-state => 'disabled');
                       },
        )->pack();

my $choice="number"; #the default list item.
sub listBrowse{
       my $listTag=$main->BrowseEntry(
                -variable=>\$choice,
                -browsecmd=>\&Verify
                )->pack();
        $listTag->insert("end","Number");
        $listTag->insert("end","Bullet");

        }
MainLoop;

[download]

Cheers, Christoph

In reply to Re: better control of Tk::Button by lamprecht
in thread better control of Tk::Button by biohisham

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