in reply to Perl/TK : Passing arguments to the function while clicking submit button

The correct syntax for passing arguments to subs is 
-command => [\&function,$arg1,$arg2]

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Re^2: Perl/TK : Passing arguments to the function while clicking submit button
by kiruthika.bkite (Scribe) on Apr 06, 2010 at 09:48 UTC
    Thanks a lot..
    But I want to know why it is working when I called the function without argument and not working with argument.

    It will be better if you explain this.

    Thanks.
[reply]
      why it is working when I called the function without argument

      Presumably because \&function (without parentheses) is a reference to the function, while \&function(...) is a reference to whatever the called function returned. 

      #!/usr/bin/perl -l

sub function {
    return "foo";
}

$command = \&function;
print $command;

$command = \&function();
print "$command -> $$command";

__END__
$ ./833005.pl
CODE(0x604fd0)
SCALAR(0x604290) -> foo

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        Thank you..I understand it.
[reply]
      Could you please be more specific? (A piece of code with both expected and real output would be helpful.)
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