STDOUT->autoflush(1); makes STDOUT autoflush, not FH. $| = 1 make the currently selected file handle autoflush, which isn't FH in your snippet.

my $text = "Printing test...\n";
open FH, ">LPT1:";
select(*FH);
$| = 1; # Turn on autoflush for FH
select(*STDOUT);
print FH "$text\n";

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In reply to Re: Autoflushing Laser printer by ikegami
in thread Autoflushing Laser printer by Popcorn Dave

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