Just making sure I have this right....

A script that might look like this:

use Tk;
my_long_sub {
     print "You can't kill me!\n";
     sleep 60;
     my_long_sub();
            }
$main = MainWindow->new;
$main->Button( -text "Start Long Sub", -command \&my_long_sub)->pack;
[download]

Could (and should?) be written thusly:

use Tk;
$seconds = 60;
not_a_long_sub {
     print "You can't kill me!\n";
     #sleep 60;          <-Replacing this with an after
     #my_long_sub();     <-After handles the call
            }
$main = MainWindow->new;
$main->Button( -text "Start Long Sub", -command \&not_a_long_sub)->pac
+k;
$main->after($seconds * 1000, \&not_a_long_sub);
[download]

This assumes the after counts in Milliseconds. (Like Tk)

Sorry to work this out in public, but I wanted to get my brain around it quick.... If anyone gathers the notion that I havent grokked this fully, let me know.