From: yermej <yermej@...>
Date: 2007-12-08T11:35:20+09:00
Subject: Re: working with the registry

On Dec 7, 7:15 pm, Thufir <hawat.thu...@gmail.com> wrote:
> but would like to query the registry from ruby.  Just thinking outloud
> here, haven't found a tutorial invovling the registry and ruby which I
> find useful yet :(

The following is what I was able to figure out from the standard
library API docs at http://www.ruby-doc.org/stdlib/. It's pretty
Rubyish once you get going.

>>> C:\msi>reg query HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer

[in irb]
irb> require 'win32/registry'
irb> include Win32

irb> Registry.open(Registry::HKEY_LOCAL_MACHINE, 'Software\Policies
\Microsoft\Windows\Installer').each_value do |subkey, type, data|
irb*  puts "#{subkey} (#{type}): #{data}"
irb> end

The only problem I see with this is that you get the constant value
for type (4 in this case) rather than the constant name (REG_DWORD).
Is that what you were wanting to do?

>>> C:\msi>reg query HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows

I don't have this key on my machine. Only HKEY_CURRENT_USER\Software
\Policies\Microsoft\SystemCertificates which has subkeys, but no
values, but all keys should be similar to the above.