LoadImageW

// USER32.dll  (Unicode / -W)
#include <windows.h>

HANDLE LoadImageW(
    HINSTANCE hInst,   // optional
    LPCWSTR name,
    GDI_IMAGE_TYPE type,
    INT cx,
    INT cy,
    IMAGE_FLAGS fuLoad
);

<DllImport("USER32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function LoadImageW(
    hInst As IntPtr,   ' HINSTANCE optional
    <MarshalAs(UnmanagedType.LPWStr)> name As String,   ' LPCWSTR
    type As UInteger,   ' GDI_IMAGE_TYPE
    cx As Integer,   ' INT
    cy As Integer,   ' INT
    fuLoad As UInteger   ' IMAGE_FLAGS
) As IntPtr
End Function

' hInst : HINSTANCE optional
' name : LPCWSTR
' type : GDI_IMAGE_TYPE
' cx : INT
' cy : INT
' fuLoad : IMAGE_FLAGS
Declare PtrSafe Function LoadImageW Lib "user32" ( _
    ByVal hInst As LongPtr, _
    ByVal name As LongPtr, _
    ByVal type As Long, _
    ByVal cx As Long, _
    ByVal cy As Long, _
    ByVal fuLoad As Long) As LongPtr
' 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

LoadImageW = ctypes.windll.user32.LoadImageW
LoadImageW.restype = ctypes.c_void_p
LoadImageW.argtypes = [
    wintypes.HANDLE,  # hInst : HINSTANCE optional
    wintypes.LPCWSTR,  # name : LPCWSTR
    wintypes.DWORD,  # type : GDI_IMAGE_TYPE
    ctypes.c_int,  # cx : INT
    ctypes.c_int,  # cy : INT
    wintypes.DWORD,  # fuLoad : IMAGE_FLAGS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
LoadImageW = Fiddle::Function.new(
  lib['LoadImageW'],
  [
    Fiddle::TYPE_VOIDP,  # hInst : HINSTANCE optional
    Fiddle::TYPE_VOIDP,  # name : LPCWSTR
    -Fiddle::TYPE_INT,  # type : GDI_IMAGE_TYPE
    Fiddle::TYPE_INT,  # cx : INT
    Fiddle::TYPE_INT,  # cy : INT
    -Fiddle::TYPE_INT,  # fuLoad : IMAGE_FLAGS
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "user32")]
extern "system" {
    fn LoadImageW(
        hInst: *mut core::ffi::c_void,  // HINSTANCE optional
        name: *const u16,  // LPCWSTR
        type: u32,  // GDI_IMAGE_TYPE
        cx: i32,  // INT
        cy: i32,  // INT
        fuLoad: u32  // IMAGE_FLAGS
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr LoadImageW(IntPtr hInst, [MarshalAs(UnmanagedType.LPWStr)] string name, uint type, int cx, int cy, uint fuLoad);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_LoadImageW' -Namespace Win32 -PassThru
# $api::LoadImageW(hInst, name, type, cx, cy, fuLoad)

#uselib "USER32.dll"
#func global LoadImageW "LoadImageW" wptr, wptr, wptr, wptr, wptr, wptr
; LoadImageW hInst, name, type, cx, cy, fuLoad   ; 戻り値は stat
; hInst : HINSTANCE optional -> "wptr"
; name : LPCWSTR -> "wptr"
; type : GDI_IMAGE_TYPE -> "wptr"
; cx : INT -> "wptr"
; cy : INT -> "wptr"
; fuLoad : IMAGE_FLAGS -> "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 "USER32.dll"
#cfunc global LoadImageW "LoadImageW" sptr, wstr, int, int, int, int
; res = LoadImageW(hInst, name, type, cx, cy, fuLoad)
; hInst : HINSTANCE optional -> "sptr"
; name : LPCWSTR -> "wstr"
; type : GDI_IMAGE_TYPE -> "int"
; cx : INT -> "int"
; cy : INT -> "int"
; fuLoad : IMAGE_FLAGS -> "int"

; HANDLE LoadImageW(HINSTANCE hInst, LPCWSTR name, GDI_IMAGE_TYPE type, INT cx, INT cy, IMAGE_FLAGS fuLoad)
#uselib "USER32.dll"
#cfunc global LoadImageW "LoadImageW" intptr, wstr, int, int, int, int
; res = LoadImageW(hInst, name, type, cx, cy, fuLoad)
; hInst : HINSTANCE optional -> "intptr"
; name : LPCWSTR -> "wstr"
; type : GDI_IMAGE_TYPE -> "int"
; cx : INT -> "int"
; cy : INT -> "int"
; fuLoad : IMAGE_FLAGS -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procLoadImageW = user32.NewProc("LoadImageW")
)

// hInst (HINSTANCE optional), name (LPCWSTR), type (GDI_IMAGE_TYPE), cx (INT), cy (INT), fuLoad (IMAGE_FLAGS)
r1, _, err := procLoadImageW.Call(
	uintptr(hInst),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(name))),
	uintptr(type),
	uintptr(cx),
	uintptr(cy),
	uintptr(fuLoad),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function LoadImageW(
  hInst: THandle;   // HINSTANCE optional
  name: PWideChar;   // LPCWSTR
  type: DWORD;   // GDI_IMAGE_TYPE
  cx: Integer;   // INT
  cy: Integer;   // INT
  fuLoad: DWORD   // IMAGE_FLAGS
): THandle; stdcall;
  external 'USER32.dll' name 'LoadImageW';

result := DllCall("USER32\LoadImageW"
    , "Ptr", hInst   ; HINSTANCE optional
    , "WStr", name   ; LPCWSTR
    , "UInt", type   ; GDI_IMAGE_TYPE
    , "Int", cx   ; INT
    , "Int", cy   ; INT
    , "UInt", fuLoad   ; IMAGE_FLAGS
    , "Ptr")   ; return: HANDLE

●LoadImageW(hInst, name, type, cx, cy, fuLoad) = DLL("USER32.dll", "void* LoadImageW(void*, char*, dword, int, int, dword)")
# 呼び出し: LoadImageW(hInst, name, type, cx, cy, fuLoad)
# hInst : HINSTANCE optional -> "void*"
# name : LPCWSTR -> "char*"
# type : GDI_IMAGE_TYPE -> "dword"
# cx : INT -> "int"
# cy : INT -> "int"
# fuLoad : IMAGE_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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "user32" fn LoadImageW(
    hInst: ?*anyopaque, // HINSTANCE optional
    name: [*c]const u16, // LPCWSTR
    type: u32, // GDI_IMAGE_TYPE
    cx: i32, // INT
    cy: i32, // INT
    fuLoad: u32 // IMAGE_FLAGS
) callconv(std.os.windows.WINAPI) ?*anyopaque;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc LoadImageW(
    hInst: pointer,  # HINSTANCE optional
    name: WideCString,  # LPCWSTR
    `type`: uint32,  # GDI_IMAGE_TYPE
    cx: int32,  # INT
    cy: int32,  # INT
    fuLoad: uint32  # IMAGE_FLAGS
): pointer {.importc: "LoadImageW", stdcall, dynlib: "USER32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "user32");
extern(Windows)
void* LoadImageW(
    void* hInst,   // HINSTANCE optional
    const(wchar)* name,   // LPCWSTR
    uint type,   // GDI_IMAGE_TYPE
    int cx,   // INT
    int cy,   // INT
    uint fuLoad   // IMAGE_FLAGS
);

ccall((:LoadImageW, "USER32.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, Cwstring, UInt32, Int32, Int32, UInt32),
      hInst, name, type, cx, cy, fuLoad)
# hInst : HINSTANCE optional -> Ptr{Cvoid}
# name : LPCWSTR -> Cwstring
# type : GDI_IMAGE_TYPE -> UInt32
# cx : INT -> Int32
# cy : INT -> Int32
# fuLoad : IMAGE_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
void* LoadImageW(
    void* hInst,
    const uint16_t* name,
    uint32_t type,
    int32_t cx,
    int32_t cy,
    uint32_t fuLoad);
]]
local user32 = ffi.load("user32")
-- user32.LoadImageW(hInst, name, type, cx, cy, fuLoad)
-- hInst : HINSTANCE optional
-- name : LPCWSTR
-- type : GDI_IMAGE_TYPE
-- cx : INT
-- cy : INT
-- fuLoad : IMAGE_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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('USER32.dll');
const LoadImageW = lib.func('__stdcall', 'LoadImageW', 'void *', ['void *', 'str16', 'uint32_t', 'int32_t', 'int32_t', 'uint32_t']);
// LoadImageW(hInst, name, type, cx, cy, fuLoad)
// hInst : HINSTANCE optional -> 'void *'
// name : LPCWSTR -> 'str16'
// type : GDI_IMAGE_TYPE -> 'uint32_t'
// cx : INT -> 'int32_t'
// cy : INT -> 'int32_t'
// fuLoad : IMAGE_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("USER32.dll", {
  LoadImageW: { parameters: ["pointer", "buffer", "u32", "i32", "i32", "u32"], result: "pointer" },
});
// lib.symbols.LoadImageW(hInst, name, type, cx, cy, fuLoad)
// hInst : HINSTANCE optional -> "pointer"
// name : LPCWSTR -> "buffer"
// type : GDI_IMAGE_TYPE -> "u32"
// cx : INT -> "i32"
// cy : INT -> "i32"
// fuLoad : IMAGE_FLAGS -> "u32"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void* LoadImageW(
    void* hInst,
    const uint16_t* name,
    uint32_t type,
    int32_t cx,
    int32_t cy,
    uint32_t fuLoad);
C, "USER32.dll");
// $ffi->LoadImageW(hInst, name, type, cx, cy, fuLoad);
// hInst : HINSTANCE optional
// name : LPCWSTR
// type : GDI_IMAGE_TYPE
// cx : INT
// cy : INT
// fuLoad : IMAGE_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 User32 extends StdCallLibrary {
    User32 INSTANCE = Native.load("user32", User32.class, W32APIOptions.UNICODE_OPTIONS);
    Pointer LoadImageW(
        Pointer hInst,   // HINSTANCE optional
        WString name,   // LPCWSTR
        int type,   // GDI_IMAGE_TYPE
        int cx,   // INT
        int cy,   // INT
        int fuLoad   // IMAGE_FLAGS
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("user32")]
lib LibUSER32
  fun LoadImageW = LoadImageW(
    hInst : Void*,   # HINSTANCE optional
    name : UInt16*,   # LPCWSTR
    type_ : UInt32,   # GDI_IMAGE_TYPE
    cx : Int32,   # INT
    cy : Int32,   # INT
    fuLoad : UInt32   # IMAGE_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 LoadImageWNative = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Uint32, Int32, Int32, Uint32);
typedef LoadImageWDart = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, int, int, int, int);
final LoadImageW = DynamicLibrary.open('USER32.dll')
    .lookupFunction<LoadImageWNative, LoadImageWDart>('LoadImageW');
// hInst : HINSTANCE optional -> Pointer<Void>
// name : LPCWSTR -> Pointer<Utf16>
// type : GDI_IMAGE_TYPE -> Uint32
// cx : INT -> Int32
// cy : INT -> Int32
// fuLoad : IMAGE_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function LoadImageW(
  hInst: THandle;   // HINSTANCE optional
  name: PWideChar;   // LPCWSTR
  type: DWORD;   // GDI_IMAGE_TYPE
  cx: Integer;   // INT
  cy: Integer;   // INT
  fuLoad: DWORD   // IMAGE_FLAGS
): THandle; stdcall;
  external 'USER32.dll' name 'LoadImageW';

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

foreign import stdcall safe "LoadImageW"
  c_LoadImageW :: Ptr () -> CWString -> Word32 -> Int32 -> Int32 -> Word32 -> IO (Ptr ())
-- hInst : HINSTANCE optional -> Ptr ()
-- name : LPCWSTR -> CWString
-- type : GDI_IMAGE_TYPE -> Word32
-- cx : INT -> Int32
-- cy : INT -> Int32
-- fuLoad : IMAGE_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 loadimagew =
  foreign "LoadImageW"
    ((ptr void) @-> (ptr uint16_t) @-> uint32_t @-> int32_t @-> int32_t @-> uint32_t @-> returning (ptr void))
(* hInst : HINSTANCE optional -> (ptr void) *)
(* name : LPCWSTR -> (ptr uint16_t) *)
(* type : GDI_IMAGE_TYPE -> uint32_t *)
(* cx : INT -> int32_t *)
(* cy : INT -> int32_t *)
(* fuLoad : IMAGE_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 user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("LoadImageW" load-image-w :convention :stdcall) :pointer
  (h-inst :pointer)   ; HINSTANCE optional
  (name (:string :encoding :utf-16le))   ; LPCWSTR
  (type :uint32)   ; GDI_IMAGE_TYPE
  (cx :int32)   ; INT
  (cy :int32)   ; INT
  (fu-load :uint32))   ; IMAGE_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $LoadImageW = Win32::API::More->new('USER32',
    'HANDLE LoadImageW(HANDLE hInst, LPCWSTR name, DWORD type, int cx, int cy, DWORD fuLoad)');
# my $ret = $LoadImageW->Call($hInst, $name, $type, $cx, $cy, $fuLoad);
# hInst : HINSTANCE optional -> HANDLE
# name : LPCWSTR -> LPCWSTR
# type : GDI_IMAGE_TYPE -> DWORD
# cx : INT -> int
# cy : INT -> int
# fuLoad : IMAGE_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。