Some comments
- I doubt you really mean to be adding all those
new buttons everytime you click 'next', right? You might
want to read up about how the Tk event loop works.
- You had the syntax for -command incorrect. You
either pass it an anonymous subroutine (as in
the $button2 example below) or a code reference, with
\&
See below for corrected code.
use warnings;
use Tk;
sub one;
my $main = MainWindow->new;
my $button;
my $button2;
my $label1;
$label1 = $main->Text ( '-width'=>'50')->pack;
$button = $main->Button( -text=>'next', -command=>\&one)->pack;
$button2 = $main->Button( -text=>'quit', -command=>sub{exit;})->pack;
our $foo = "0";
MainLoop;
sub one
{
my $talk="Hey, that was click $foo\n";
$foo++;
$label1 -> insert('1.0',$talk);
}
