LoadPackagedLibrary

// KERNEL32.dll
#include <windows.h>

HMODULE LoadPackagedLibrary(
    LPCWSTR lpwLibFileName,
    DWORD Reserved   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function LoadPackagedLibrary(
    <MarshalAs(UnmanagedType.LPWStr)> lpwLibFileName As String,   ' LPCWSTR
    Reserved As UInteger   ' DWORD optional
) As IntPtr
End Function

' lpwLibFileName : LPCWSTR
' Reserved : DWORD optional
Declare PtrSafe Function LoadPackagedLibrary Lib "kernel32" ( _
    ByVal lpwLibFileName As LongPtr, _
    ByVal Reserved As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

LoadPackagedLibrary = ctypes.windll.kernel32.LoadPackagedLibrary
LoadPackagedLibrary.restype = ctypes.c_void_p
LoadPackagedLibrary.argtypes = [
    wintypes.LPCWSTR,  # lpwLibFileName : LPCWSTR
    wintypes.DWORD,  # Reserved : DWORD optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
LoadPackagedLibrary = Fiddle::Function.new(
  lib['LoadPackagedLibrary'],
  [
    Fiddle::TYPE_VOIDP,  # lpwLibFileName : LPCWSTR
    -Fiddle::TYPE_INT,  # Reserved : DWORD optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn LoadPackagedLibrary(
        lpwLibFileName: *const u16,  // LPCWSTR
        Reserved: u32  // DWORD optional
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern IntPtr LoadPackagedLibrary([MarshalAs(UnmanagedType.LPWStr)] string lpwLibFileName, uint Reserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_LoadPackagedLibrary' -Namespace Win32 -PassThru
# $api::LoadPackagedLibrary(lpwLibFileName, Reserved)

#uselib "KERNEL32.dll"
#func global LoadPackagedLibrary "LoadPackagedLibrary" sptr, sptr
; LoadPackagedLibrary lpwLibFileName, Reserved   ; 戻り値は stat
; lpwLibFileName : LPCWSTR -> "sptr"
; Reserved : DWORD optional -> "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 "KERNEL32.dll"
#cfunc global LoadPackagedLibrary "LoadPackagedLibrary" wstr, int
; res = LoadPackagedLibrary(lpwLibFileName, Reserved)
; lpwLibFileName : LPCWSTR -> "wstr"
; Reserved : DWORD optional -> "int"

; HMODULE LoadPackagedLibrary(LPCWSTR lpwLibFileName, DWORD Reserved)
#uselib "KERNEL32.dll"
#cfunc global LoadPackagedLibrary "LoadPackagedLibrary" wstr, int
; res = LoadPackagedLibrary(lpwLibFileName, Reserved)
; lpwLibFileName : LPCWSTR -> "wstr"
; Reserved : DWORD optional -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procLoadPackagedLibrary = kernel32.NewProc("LoadPackagedLibrary")
)

// lpwLibFileName (LPCWSTR), Reserved (DWORD optional)
r1, _, err := procLoadPackagedLibrary.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpwLibFileName))),
	uintptr(Reserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HMODULE

function LoadPackagedLibrary(
  lpwLibFileName: PWideChar;   // LPCWSTR
  Reserved: DWORD   // DWORD optional
): THandle; stdcall;
  external 'KERNEL32.dll' name 'LoadPackagedLibrary';

result := DllCall("KERNEL32\LoadPackagedLibrary"
    , "WStr", lpwLibFileName   ; LPCWSTR
    , "UInt", Reserved   ; DWORD optional
    , "Ptr")   ; return: HMODULE

●LoadPackagedLibrary(lpwLibFileName, Reserved) = DLL("KERNEL32.dll", "void* LoadPackagedLibrary(char*, dword)")
# 呼び出し: LoadPackagedLibrary(lpwLibFileName, Reserved)
# lpwLibFileName : LPCWSTR -> "char*"
# Reserved : DWORD optional -> "dword"
# 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)。