Sioln has asked for the wisdom of the Perl Monks concerning the following question: 

use Term::ReadKey;
my $key;
while (not defined ($key = ReadKey(-1))) {
# No key yet
}
print "Get key '$key'\n";
print ord($key);
print "\n";
print chr($key);

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This code catches any key but PgUp, PgDn, func keys - not :( How can I got PgUp with Term::ReadKey ? Please, don't offer me a WIN32::Console. I need do it on term. P.S. OS = Windows 2000. Sioln.

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Re: Term::ReadKey - How can I get PgUp, PgDn etc ?
by gellyfish (Monsignor) on Aug 17, 2005 at 12:46 UTC

    Given a particular terminal type ReadKey() may need to be called repeatedly to retrieve a multicharacter code for a given control key - so for instance on an xterm on this computer I could use something like: 

    use Term::ReadKey;
my $key = '';
ReadMode(4);
                                                                      
+          
my %keys = ( A => 'KeyUp', B => 'KeyDown', C => 'KeyRight', D => 'KeyL
+eft');
while ($key ne 'q' )
{
   while (not defined ($key = ReadKey(-1))) {
# No key yet
   }
                                                                      
+          
   if ( ord($key) == 27 )
   {
      if( ReadKey(-1) eq '[' )
      {
        $key = ReadKey(-1);
                                                                      
+          
        print $keys{$key},"\n";
      }
   }
}
print "\n";
ReadMode(0);

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    You may of course have to adjust some of the values to work on your system.

    /J\

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      That doesn't apply to windows.
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Re: Term::ReadKey - How can I get PgUp, PgDn etc ?
by davidrw (Prior) on Aug 17, 2005 at 12:36 UTC
    Hmm.. i know that the special chars are usually a two-character sequence.. doing ReadKey() twice didn't work for me though. I did find an entry in the FAQ though (perldoc perlfaq5): 'How can I read a single character from a file? From the keyboard?' but i didn't immediately get a working test case. I also found this node Term::TermKeys here on PM that looks promising...
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