MsiIsProductElevatedW

// msi.dll  (Unicode / -W)
#include <windows.h>

DWORD MsiIsProductElevatedW(
    LPCWSTR szProduct,
    BOOL* pfElevated
);

<DllImport("msi.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function MsiIsProductElevatedW(
    <MarshalAs(UnmanagedType.LPWStr)> szProduct As String,   ' LPCWSTR
    <Out> ByRef pfElevated As Integer   ' BOOL* out
) As UInteger
End Function

' szProduct : LPCWSTR
' pfElevated : BOOL* out
Declare PtrSafe Function MsiIsProductElevatedW Lib "msi" ( _
    ByVal szProduct As LongPtr, _
    ByRef pfElevated As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MsiIsProductElevatedW = ctypes.windll.msi.MsiIsProductElevatedW
MsiIsProductElevatedW.restype = wintypes.DWORD
MsiIsProductElevatedW.argtypes = [
    wintypes.LPCWSTR,  # szProduct : LPCWSTR
    ctypes.c_void_p,  # pfElevated : BOOL* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiIsProductElevatedW = Fiddle::Function.new(
  lib['MsiIsProductElevatedW'],
  [
    Fiddle::TYPE_VOIDP,  # szProduct : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pfElevated : BOOL* out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msi")]
extern "system" {
    fn MsiIsProductElevatedW(
        szProduct: *const u16,  // LPCWSTR
        pfElevated: *mut i32  // BOOL* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Unicode)]
public static extern uint MsiIsProductElevatedW([MarshalAs(UnmanagedType.LPWStr)] string szProduct, out int pfElevated);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiIsProductElevatedW' -Namespace Win32 -PassThru
# $api::MsiIsProductElevatedW(szProduct, pfElevated)

#uselib "msi.dll"
#func global MsiIsProductElevatedW "MsiIsProductElevatedW" wptr, wptr
; MsiIsProductElevatedW szProduct, pfElevated   ; 戻り値は stat
; szProduct : LPCWSTR -> "wptr"
; pfElevated : BOOL* out -> "wptr"
; ※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 "msi.dll"
#cfunc global MsiIsProductElevatedW "MsiIsProductElevatedW" wstr, int
; res = MsiIsProductElevatedW(szProduct, pfElevated)
; szProduct : LPCWSTR -> "wstr"
; pfElevated : BOOL* out -> "int"

; DWORD MsiIsProductElevatedW(LPCWSTR szProduct, BOOL* pfElevated)
#uselib "msi.dll"
#cfunc global MsiIsProductElevatedW "MsiIsProductElevatedW" wstr, int
; res = MsiIsProductElevatedW(szProduct, pfElevated)
; szProduct : LPCWSTR -> "wstr"
; pfElevated : BOOL* out -> "int"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiIsProductElevatedW = msi.NewProc("MsiIsProductElevatedW")
)

// szProduct (LPCWSTR), pfElevated (BOOL* out)
r1, _, err := procMsiIsProductElevatedW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szProduct))),
	uintptr(pfElevated),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiIsProductElevatedW(
  szProduct: PWideChar;   // LPCWSTR
  pfElevated: Pointer   // BOOL* out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiIsProductElevatedW';

result := DllCall("msi\MsiIsProductElevatedW"
    , "WStr", szProduct   ; LPCWSTR
    , "Ptr", pfElevated   ; BOOL* out
    , "UInt")   ; return: DWORD

●MsiIsProductElevatedW(szProduct, pfElevated) = DLL("msi.dll", "dword MsiIsProductElevatedW(char*, void*)")
# 呼び出し: MsiIsProductElevatedW(szProduct, pfElevated)
# szProduct : LPCWSTR -> "char*"
# pfElevated : BOOL* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。