I am trying to capture the registry changes made by a software installation but am not having much success. My thought was to capture the registry using Win32::TieRegistry before and after the install and compare them. Butthe code below says no changes were made to the registry during install (I verified that the reg keys were made).

According to the Win32::TieRegistry documentation, I can call the Flush() method to Flush "all cached information about the Registry key so that future uses will get fresh data from the Registry." But for some reason, my $LmRegAfter is the same as my $LmRegBefore. Any suggestions would be appreciated. 

use strict;
use Win32::TieRegistry ( Delimiter=>"/", ArrayValues=>0 );
#snapshot registry before install
my $LmRegBefore = $Registry->{"LMachine/Software/"};

#Run the installation program - much harder in real life, but this is 
+a test script :)
my $install='path to install to run';
system($install);

#Flush the reg subkey
my $r=$Registry->{"LMachine/Software/"}->Flush();
print ("Flushing LMachine[$r]");

#snapshot registry after install
my $LmRegAfter = $Registry->{"LMachine/Software/"};

registryChanges($LmRegBefore,$LmRegAfter);

#############
sub registryChanges{
    my $regBefore=shift;
    my $regAfter=shift;
    foreach my $key (keys(%{$regAfter})){
        if(!defined $regBefore->{$key}){
            my $val=$regAfter->{$key};
            $change{$key}=$val;
            print "registryChanges[$key]=[$val]\n";
            }
        }
    }

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In reply to Capturing Win32 registry changes made by a software installation by slloyd

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