RegOpenCurrentUser

// ADVAPI32.dll
#include <windows.h>

WIN32_ERROR RegOpenCurrentUser(
    DWORD samDesired,
    HKEY* phkResult
);

<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function RegOpenCurrentUser(
    samDesired As UInteger,   ' DWORD
    phkResult As IntPtr   ' HKEY* out
) As UInteger
End Function

' samDesired : DWORD
' phkResult : HKEY* out
Declare PtrSafe Function RegOpenCurrentUser Lib "advapi32" ( _
    ByVal samDesired As Long, _
    ByVal phkResult As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

RegOpenCurrentUser = ctypes.windll.advapi32.RegOpenCurrentUser
RegOpenCurrentUser.restype = wintypes.DWORD
RegOpenCurrentUser.argtypes = [
    wintypes.DWORD,  # samDesired : DWORD
    ctypes.c_void_p,  # phkResult : HKEY* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
RegOpenCurrentUser = Fiddle::Function.new(
  lib['RegOpenCurrentUser'],
  [
    -Fiddle::TYPE_INT,  # samDesired : DWORD
    Fiddle::TYPE_VOIDP,  # phkResult : HKEY* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn RegOpenCurrentUser(
        samDesired: u32,  // DWORD
        phkResult: *mut *mut core::ffi::c_void  // HKEY* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll")]
public static extern uint RegOpenCurrentUser(uint samDesired, IntPtr phkResult);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_RegOpenCurrentUser' -Namespace Win32 -PassThru
# $api::RegOpenCurrentUser(samDesired, phkResult)

#uselib "ADVAPI32.dll"
#func global RegOpenCurrentUser "RegOpenCurrentUser" sptr, sptr
; RegOpenCurrentUser samDesired, phkResult   ; 戻り値は stat
; samDesired : DWORD -> "sptr"
; phkResult : HKEY* out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "ADVAPI32.dll"
#cfunc global RegOpenCurrentUser "RegOpenCurrentUser" int, sptr
; res = RegOpenCurrentUser(samDesired, phkResult)
; samDesired : DWORD -> "int"
; phkResult : HKEY* out -> "sptr"

; WIN32_ERROR RegOpenCurrentUser(DWORD samDesired, HKEY* phkResult)
#uselib "ADVAPI32.dll"
#cfunc global RegOpenCurrentUser "RegOpenCurrentUser" int, intptr
; res = RegOpenCurrentUser(samDesired, phkResult)
; samDesired : DWORD -> "int"
; phkResult : HKEY* out -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procRegOpenCurrentUser = advapi32.NewProc("RegOpenCurrentUser")
)

// samDesired (DWORD), phkResult (HKEY* out)
r1, _, err := procRegOpenCurrentUser.Call(
	uintptr(samDesired),
	uintptr(phkResult),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function RegOpenCurrentUser(
  samDesired: DWORD;   // DWORD
  phkResult: Pointer   // HKEY* out
): DWORD; stdcall;
  external 'ADVAPI32.dll' name 'RegOpenCurrentUser';

result := DllCall("ADVAPI32\RegOpenCurrentUser"
    , "UInt", samDesired   ; DWORD
    , "Ptr", phkResult   ; HKEY* out
    , "UInt")   ; return: WIN32_ERROR

●RegOpenCurrentUser(samDesired, phkResult) = DLL("ADVAPI32.dll", "dword RegOpenCurrentUser(dword, void*)")
# 呼び出し: RegOpenCurrentUser(samDesired, phkResult)
# samDesired : DWORD -> "dword"
# phkResult : HKEY* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。