Unless you use key based lookup for the data elsewhere you would probably be better to use a nested array structure instead of the nested hash structure you are currently using. Consider:

#!c:\Perl\bin\perl
use warnings;
use strict;

use constant KANRI_01_0 => 0x00000001;    # TBC
use constant KANRI_01_1 => 0x00000002;    # TBC
use constant KANRI_02_0 => 0x00000004;    # TBC
use constant KANRI_02_1 => 0x00000008;    # TBC
use constant KANRI_03_0 => 0x00000010;    # TBC
use constant KANRI_04_1 => 0x00000020;    # TBC
use constant KANRI_04_2 => 0x00000040;    # TBC
use constant KANRI_04_3 => 0x00000080;    # TBC
use constant KANRI_04_4 => 0x00000100;    # TBC
use constant KANRI_05_1 => 0x00000200;    # TBC
use constant KANRI_05_2 => 0x00000400;    # TBC
use constant KANRI_06_1 => 0x00000800;    # TBC
use constant KANRI_07_1 => 0x00001000;    # TBC
use constant KANRI_07_2 => 0x00002000;    # TBC
use constant KANRI_07_3 => 0x00004000;    # TBC
use constant KANRI_07_4 => 0x00008000;    # TBC
use constant KANRI_07_5 => 0x00010000;    # TBC
use constant KANRI_08_1 => 0x00020000;    # TBC

my @menu = (
    [Outer1 => [
        [O1Inne1 => KANRI_04_1],
        [O1Inne2 => KANRI_04_2],
        [O1Inne3 => KANRI_04_3],
        [O1Inne4 => KANRI_04_4],
    ]],
    [Outer2 => [[O2Inne1 => KANRI_05_1]]],
    [Outer3 => [[O3Inne1 => KANRI_06_1]]],
    [Outer4 => [
        [O4Inne1 => KANRI_07_1],
        [O4Inne2 => KANRI_07_2],
        [O4Inne3 => KANRI_07_3],
        [O4Inne4 => KANRI_07_4],
        [O4Inne5 => KANRI_07_5],
    ]],
    [Outer5 => [[O5Inne1 => KANRI_08_1]]],
);


for my $mainMenuItem (@menu) {
    print "$mainMenuItem->[0]\n";
    for my $subMenuItem (@{$mainMenuItem->[1]}) {
        print "$subMenuItem->[0] = $subMenuItem->[1]   ";
    }
    print "\n";
}

[download]

Prints:

Outer1
O1Inne1 = 32   O1Inne2 = 64   O1Inne3 = 128   O1Inne4 = 256   
Outer2
O2Inne1 = 512   
Outer3
O3Inne1 = 2048   
Outer4
O4Inne1 = 4096   O4Inne2 = 8192   O4Inne3 = 16384   O4Inne4 = 32768   
+O4Inne5 = 65536   
Outer5
O5Inne1 = 131072

[download]
True laziness is hard work

In reply to Re: Problem with printing a Hash of Hashes in order by GrandFather
in thread Problem with printing a Hash of Hashes in order by KyussRyn

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