http://qs321.pair.com?node_id=522434


in reply to Need mouse move??? for Tk, Windows, Excel, system, start

I think it has to do with the Tk window running modal and waiting for system to return it a value. Using 1 as the first argument to system. I got it work the way you want by modifying this section like so:
#warn "path537: '$ENV{PATH}'\n"; my $prob_found; if( $dont_use_start){ system(1, $file_to_run ); }else{ $prob_found = system ( 1, "start", "$file_to_run"); }
You will get 1 returned to your $prob_found, so you will need to change your logic for checking $prob_found to == 0
JamesNC