http://www.perlmonks.org?node_id=536269


in reply to How to hide/inhibit the console window when launching a Perl script on Windows?

The following technique is useful when the window you want to hide isn't the one you're interacting with. You can see the program's console output if you run it from a command prompt; but if you launch the script from Explorer (double-click; Start>Run, etc.), this hides the window.
use Win32::API; sub hide_console { Win32::API->new( 'kernel32', 'FreeConsole', [], 'I' )->Call(); }