I'm looking to improve the Find::Which module so that it can find executables in the registry in HKEY LOCAL MACHINE\SOFTWARE Microsoft) Windows\CurrentVersion\App Paths.

I'm using Raku's NativeCall feature to attempt this but I'm having trouble using the Windows API to make function calls that require an HKEY handle to make queries. My latest failed attempt which just attempts to pass in a string for HKEY and then tries to use cglobal to get a value for it: 

#! /usr/bin/env raku
use v6;

use NativeCall;


sub RegQueryInfoKeyA(
Str,               # hKey 
#int32,             # lpClass
#int32,             # lpcchClass
#int32 is rw,       # lpcSubKeys
#`{
#int32 is rw,       # lpReserved
#int32 is rw,       # lpcSubKeys }
)
returns uint32 is native('Kernel32') { * }

my $blah = RegQueryInfoKeyA(
'HKEY_LOCAL_MACHINE',
#int32,
#0,
#
#
#
);
say $blah;

my $var := cglobal('Kernel32', 'HKEY_LOCAL_MACHINE', int32);
say $var;

[download]

I tried taking look at some other Perl modules like Win32API::Registery but did not get anywhere. Any general hints would be greatly appreciated. Thanks.

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In reply to Raku: How do I generate a handle for HKEY_LOCAL_MACHINE? by nysus

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