GetEnhMetaFileW

// GDI32.dll  (Unicode / -W)
#include <windows.h>

HENHMETAFILE GetEnhMetaFileW(
    LPCWSTR lpName
);

<DllImport("GDI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function GetEnhMetaFileW(
    <MarshalAs(UnmanagedType.LPWStr)> lpName As String   ' LPCWSTR
) As IntPtr
End Function

' lpName : LPCWSTR
Declare PtrSafe Function GetEnhMetaFileW Lib "gdi32" ( _
    ByVal lpName As LongPtr) 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

GetEnhMetaFileW = ctypes.windll.gdi32.GetEnhMetaFileW
GetEnhMetaFileW.restype = ctypes.c_void_p
GetEnhMetaFileW.argtypes = [
    wintypes.LPCWSTR,  # lpName : LPCWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
GetEnhMetaFileW = Fiddle::Function.new(
  lib['GetEnhMetaFileW'],
  [
    Fiddle::TYPE_VOIDP,  # lpName : LPCWSTR
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "gdi32")]
extern "system" {
    fn GetEnhMetaFileW(
        lpName: *const u16  // LPCWSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GDI32.dll", CharSet = CharSet.Unicode)]
public static extern IntPtr GetEnhMetaFileW([MarshalAs(UnmanagedType.LPWStr)] string lpName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_GetEnhMetaFileW' -Namespace Win32 -PassThru
# $api::GetEnhMetaFileW(lpName)

#uselib "GDI32.dll"
#func global GetEnhMetaFileW "GetEnhMetaFileW" wptr
; GetEnhMetaFileW lpName   ; 戻り値は stat
; lpName : LPCWSTR -> "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 "GDI32.dll"
#cfunc global GetEnhMetaFileW "GetEnhMetaFileW" wstr
; res = GetEnhMetaFileW(lpName)
; lpName : LPCWSTR -> "wstr"

; HENHMETAFILE GetEnhMetaFileW(LPCWSTR lpName)
#uselib "GDI32.dll"
#cfunc global GetEnhMetaFileW "GetEnhMetaFileW" wstr
; res = GetEnhMetaFileW(lpName)
; lpName : LPCWSTR -> "wstr"

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

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procGetEnhMetaFileW = gdi32.NewProc("GetEnhMetaFileW")
)

// lpName (LPCWSTR)
r1, _, err := procGetEnhMetaFileW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HENHMETAFILE

function GetEnhMetaFileW(
  lpName: PWideChar   // LPCWSTR
): THandle; stdcall;
  external 'GDI32.dll' name 'GetEnhMetaFileW';

result := DllCall("GDI32\GetEnhMetaFileW"
    , "WStr", lpName   ; LPCWSTR
    , "Ptr")   ; return: HENHMETAFILE

●GetEnhMetaFileW(lpName) = DLL("GDI32.dll", "void* GetEnhMetaFileW(char*)")
# 呼び出し: GetEnhMetaFileW(lpName)
# lpName : LPCWSTR -> "char*"
# 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。