...here is an example for you to check out

... the problem is how do you detect the end of playback... is some signal emitted?

.... i leave the state logic broken, for you to figure out :-)

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

my $mw     = Tk::MainWindow->new;
my $button = $mw->Button->pack(-side =>'left');
my $button1 = $mw->Button(-text => 'Go  ', 
 -state => 'normal')->pack( -side =>'left');


my $x      = $mw->Pixmap(
        -data => qq(/* XPM */
static char * x_xpm[] = {
"24 24 2 1",
"       c None",
".      c #000000",
"                        ",
"                        ",
"                        ",
"                        ",
"                        ",
"                        ",
"       ...    ...       ",
"        ..    ..        ",
"        ...  ..         ",
"         .. ...         ",
"          ....          ",
"          ...           ",
"          ...           ",
"          ....          ",
"         .. ..          ",
"        ...  ..         ",
"        ..   ...        ",
"       ..     ..        ",
"      ...     ...       ",
"                        ",
"                        ",
"                        ",
"                        ",
"                        "};
));

my $o      = $mw->Pixmap(
        -data => qq(/* XPM */
static char * o_xpm[] = {
"24 24 2 1",
"       c None",
".      c #000000",
"                        ",
"                        ",
"                        ",
"                        ",
"                        ",
"                        ",
"         ......         ",
"        ........        ",
"       ...    ...       ",
"       ..      ..       ",
"      ..        ..      ",
"      ..        ..      ",
"      ..        ..      ",
"      ..        ..      ",
"      ..        ..      ",
"       ..      ..       ",
"       ...    ...       ",
"        ........        ",
"         ......         ",
"                        ",
"                        ",
"                        ",
"                        ",
"                        "};
));

my @toggle = ($x, $o);
my @toggle1 = ('Go  ','Whoa');

$button->configure(
        -image => $x,
        -command => sub {
                @toggle = @toggle[1, 0];
                @toggle1 = @toggle1[1, 0];
                $button->configure(-image => $toggle[0]);
                
                if ( $toggle1[0] eq 'Go  '){ 
                $button1->configure( -text => $toggle1[0],
                                     -state => 'normal',
                                     );
                 }else{
                $button1->configure( -text => $toggle1[1],
                                     -state => 'disabled',
                                     );
                }     

        }
);


Tk->MainLoop;
[download]

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