LoadLibraryExA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

HMODULE LoadLibraryExA(
    LPCSTR lpLibFileName,
    HANDLE hFile,   // optional
    LOAD_LIBRARY_FLAGS dwFlags
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function LoadLibraryExA(
    <MarshalAs(UnmanagedType.LPStr)> lpLibFileName As String,   ' LPCSTR
    hFile As IntPtr,   ' HANDLE optional
    dwFlags As UInteger   ' LOAD_LIBRARY_FLAGS
) As IntPtr
End Function

' lpLibFileName : LPCSTR
' hFile : HANDLE optional
' dwFlags : LOAD_LIBRARY_FLAGS
Declare PtrSafe Function LoadLibraryExA Lib "kernel32" ( _
    ByVal lpLibFileName As String, _
    ByVal hFile As LongPtr, _
    ByVal dwFlags 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

LoadLibraryExA = ctypes.windll.kernel32.LoadLibraryExA
LoadLibraryExA.restype = ctypes.c_void_p
LoadLibraryExA.argtypes = [
    wintypes.LPCSTR,  # lpLibFileName : LPCSTR
    wintypes.HANDLE,  # hFile : HANDLE optional
    wintypes.DWORD,  # dwFlags : LOAD_LIBRARY_FLAGS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
LoadLibraryExA = Fiddle::Function.new(
  lib['LoadLibraryExA'],
  [
    Fiddle::TYPE_VOIDP,  # lpLibFileName : LPCSTR
    Fiddle::TYPE_VOIDP,  # hFile : HANDLE optional
    -Fiddle::TYPE_INT,  # dwFlags : LOAD_LIBRARY_FLAGS
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn LoadLibraryExA(
        lpLibFileName: *const u8,  // LPCSTR
        hFile: *mut core::ffi::c_void,  // HANDLE optional
        dwFlags: u32  // LOAD_LIBRARY_FLAGS
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern IntPtr LoadLibraryExA([MarshalAs(UnmanagedType.LPStr)] string lpLibFileName, IntPtr hFile, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_LoadLibraryExA' -Namespace Win32 -PassThru
# $api::LoadLibraryExA(lpLibFileName, hFile, dwFlags)

#uselib "KERNEL32.dll"
#func global LoadLibraryExA "LoadLibraryExA" sptr, sptr, sptr
; LoadLibraryExA lpLibFileName, hFile, dwFlags   ; 戻り値は stat
; lpLibFileName : LPCSTR -> "sptr"
; hFile : HANDLE optional -> "sptr"
; dwFlags : LOAD_LIBRARY_FLAGS -> "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 LoadLibraryExA "LoadLibraryExA" str, sptr, int
; res = LoadLibraryExA(lpLibFileName, hFile, dwFlags)
; lpLibFileName : LPCSTR -> "str"
; hFile : HANDLE optional -> "sptr"
; dwFlags : LOAD_LIBRARY_FLAGS -> "int"

; HMODULE LoadLibraryExA(LPCSTR lpLibFileName, HANDLE hFile, LOAD_LIBRARY_FLAGS dwFlags)
#uselib "KERNEL32.dll"
#cfunc global LoadLibraryExA "LoadLibraryExA" str, intptr, int
; res = LoadLibraryExA(lpLibFileName, hFile, dwFlags)
; lpLibFileName : LPCSTR -> "str"
; hFile : HANDLE optional -> "intptr"
; dwFlags : LOAD_LIBRARY_FLAGS -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procLoadLibraryExA = kernel32.NewProc("LoadLibraryExA")
)

// lpLibFileName (LPCSTR), hFile (HANDLE optional), dwFlags (LOAD_LIBRARY_FLAGS)
r1, _, err := procLoadLibraryExA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpLibFileName))),
	uintptr(hFile),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HMODULE

function LoadLibraryExA(
  lpLibFileName: PAnsiChar;   // LPCSTR
  hFile: THandle;   // HANDLE optional
  dwFlags: DWORD   // LOAD_LIBRARY_FLAGS
): THandle; stdcall;
  external 'KERNEL32.dll' name 'LoadLibraryExA';

result := DllCall("KERNEL32\LoadLibraryExA"
    , "AStr", lpLibFileName   ; LPCSTR
    , "Ptr", hFile   ; HANDLE optional
    , "UInt", dwFlags   ; LOAD_LIBRARY_FLAGS
    , "Ptr")   ; return: HMODULE

●LoadLibraryExA(lpLibFileName, hFile, dwFlags) = DLL("KERNEL32.dll", "void* LoadLibraryExA(char*, void*, dword)")
# 呼び出し: LoadLibraryExA(lpLibFileName, hFile, dwFlags)
# lpLibFileName : LPCSTR -> "char*"
# hFile : HANDLE optional -> "void*"
# dwFlags : LOAD_LIBRARY_FLAGS -> "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)。

const std = @import("std");

extern "kernel32" fn LoadLibraryExA(
    lpLibFileName: [*c]const u8, // LPCSTR
    hFile: ?*anyopaque, // HANDLE optional
    dwFlags: u32 // LOAD_LIBRARY_FLAGS
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc LoadLibraryExA(
    lpLibFileName: cstring,  # LPCSTR
    hFile: pointer,  # HANDLE optional
    dwFlags: uint32  # LOAD_LIBRARY_FLAGS
): pointer {.importc: "LoadLibraryExA", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
void* LoadLibraryExA(
    const(char)* lpLibFileName,   // LPCSTR
    void* hFile,   // HANDLE optional
    uint dwFlags   // LOAD_LIBRARY_FLAGS
);

ccall((:LoadLibraryExA, "KERNEL32.dll"), stdcall, Ptr{Cvoid},
      (Cstring, Ptr{Cvoid}, UInt32),
      lpLibFileName, hFile, dwFlags)
# lpLibFileName : LPCSTR -> Cstring
# hFile : HANDLE optional -> Ptr{Cvoid}
# dwFlags : LOAD_LIBRARY_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* LoadLibraryExA(
    const char* lpLibFileName,
    void* hFile,
    uint32_t dwFlags);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.LoadLibraryExA(lpLibFileName, hFile, dwFlags)
-- lpLibFileName : LPCSTR
-- hFile : HANDLE optional
-- dwFlags : LOAD_LIBRARY_FLAGS
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('KERNEL32.dll');
const LoadLibraryExA = lib.func('__stdcall', 'LoadLibraryExA', 'void *', ['str', 'void *', 'uint32_t']);
// LoadLibraryExA(lpLibFileName, hFile, dwFlags)
// lpLibFileName : LPCSTR -> 'str'
// hFile : HANDLE optional -> 'void *'
// dwFlags : LOAD_LIBRARY_FLAGS -> 'uint32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("KERNEL32.dll", {
  LoadLibraryExA: { parameters: ["buffer", "pointer", "u32"], result: "pointer" },
});
// lib.symbols.LoadLibraryExA(lpLibFileName, hFile, dwFlags)
// lpLibFileName : LPCSTR -> "buffer"
// hFile : HANDLE optional -> "pointer"
// dwFlags : LOAD_LIBRARY_FLAGS -> "u32"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void* LoadLibraryExA(
    const char* lpLibFileName,
    void* hFile,
    uint32_t dwFlags);
C, "KERNEL32.dll");
// $ffi->LoadLibraryExA(lpLibFileName, hFile, dwFlags);
// lpLibFileName : LPCSTR
// hFile : HANDLE optional
// dwFlags : LOAD_LIBRARY_FLAGS
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class, W32APIOptions.ASCII_OPTIONS);
    Pointer LoadLibraryExA(
        String lpLibFileName,   // LPCSTR
        Pointer hFile,   // HANDLE optional
        int dwFlags   // LOAD_LIBRARY_FLAGS
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun LoadLibraryExA = LoadLibraryExA(
    lpLibFileName : UInt8*,   # LPCSTR
    hFile : Void*,   # HANDLE optional
    dwFlags : UInt32   # LOAD_LIBRARY_FLAGS
  ) : Void*
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef LoadLibraryExANative = Pointer<Void> Function(Pointer<Utf8>, Pointer<Void>, Uint32);
typedef LoadLibraryExADart = Pointer<Void> Function(Pointer<Utf8>, Pointer<Void>, int);
final LoadLibraryExA = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<LoadLibraryExANative, LoadLibraryExADart>('LoadLibraryExA');
// lpLibFileName : LPCSTR -> Pointer<Utf8>
// hFile : HANDLE optional -> Pointer<Void>
// dwFlags : LOAD_LIBRARY_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function LoadLibraryExA(
  lpLibFileName: PAnsiChar;   // LPCSTR
  hFile: THandle;   // HANDLE optional
  dwFlags: DWORD   // LOAD_LIBRARY_FLAGS
): THandle; stdcall;
  external 'KERNEL32.dll' name 'LoadLibraryExA';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "LoadLibraryExA"
  c_LoadLibraryExA :: CString -> Ptr () -> Word32 -> IO (Ptr ())
-- lpLibFileName : LPCSTR -> CString
-- hFile : HANDLE optional -> Ptr ()
-- dwFlags : LOAD_LIBRARY_FLAGS -> Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let loadlibraryexa =
  foreign "LoadLibraryExA"
    (string @-> (ptr void) @-> uint32_t @-> returning (ptr void))
(* lpLibFileName : LPCSTR -> string *)
(* hFile : HANDLE optional -> (ptr void) *)
(* dwFlags : LOAD_LIBRARY_FLAGS -> uint32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("LoadLibraryExA" load-library-ex-a :convention :stdcall) :pointer
  (lp-lib-file-name :string)   ; LPCSTR
  (h-file :pointer)   ; HANDLE optional
  (dw-flags :uint32))   ; LOAD_LIBRARY_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $LoadLibraryExA = Win32::API::More->new('KERNEL32',
    'HANDLE LoadLibraryExA(LPCSTR lpLibFileName, HANDLE hFile, DWORD dwFlags)');
# my $ret = $LoadLibraryExA->Call($lpLibFileName, $hFile, $dwFlags);
# lpLibFileName : LPCSTR -> LPCSTR
# hFile : HANDLE optional -> HANDLE
# dwFlags : LOAD_LIBRARY_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。