GdipCreateMetafileFromFile

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

Status GdipCreateMetafileFromFile(
    LPCWSTR file,
    GpMetafile** metafile
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreateMetafileFromFile(
    <MarshalAs(UnmanagedType.LPWStr)> file As String,   ' LPCWSTR
    metafile As IntPtr   ' GpMetafile** in/out
) As Integer
End Function

' file : LPCWSTR
' metafile : GpMetafile** in/out
Declare PtrSafe Function GdipCreateMetafileFromFile Lib "gdiplus" ( _
    ByVal file As LongPtr, _
    ByVal metafile As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdipCreateMetafileFromFile = ctypes.windll.gdiplus.GdipCreateMetafileFromFile
GdipCreateMetafileFromFile.restype = ctypes.c_int
GdipCreateMetafileFromFile.argtypes = [
    wintypes.LPCWSTR,  # file : LPCWSTR
    ctypes.c_void_p,  # metafile : GpMetafile** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipCreateMetafileFromFile = Fiddle::Function.new(
  lib['GdipCreateMetafileFromFile'],
  [
    Fiddle::TYPE_VOIDP,  # file : LPCWSTR
    Fiddle::TYPE_VOIDP,  # metafile : GpMetafile** in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipCreateMetafileFromFile(
        file: *const u16,  // LPCWSTR
        metafile: *mut *mut GpMetafile  // GpMetafile** in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreateMetafileFromFile([MarshalAs(UnmanagedType.LPWStr)] string file, IntPtr metafile);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreateMetafileFromFile' -Namespace Win32 -PassThru
# $api::GdipCreateMetafileFromFile(file, metafile)

#uselib "gdiplus.dll"
#func global GdipCreateMetafileFromFile "GdipCreateMetafileFromFile" sptr, sptr
; GdipCreateMetafileFromFile file, varptr(metafile)   ; 戻り値は stat
; file : LPCWSTR -> "sptr"
; metafile : GpMetafile** in/out -> "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 "gdiplus.dll"
#cfunc global GdipCreateMetafileFromFile "GdipCreateMetafileFromFile" wstr, var
; res = GdipCreateMetafileFromFile(file, metafile)
; file : LPCWSTR -> "wstr"
; metafile : GpMetafile** in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; Status GdipCreateMetafileFromFile(LPCWSTR file, GpMetafile** metafile)
#uselib "gdiplus.dll"
#cfunc global GdipCreateMetafileFromFile "GdipCreateMetafileFromFile" wstr, var
; res = GdipCreateMetafileFromFile(file, metafile)
; file : LPCWSTR -> "wstr"
; metafile : GpMetafile** in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipCreateMetafileFromFile = gdiplus.NewProc("GdipCreateMetafileFromFile")
)

// file (LPCWSTR), metafile (GpMetafile** in/out)
r1, _, err := procGdipCreateMetafileFromFile.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(file))),
	uintptr(metafile),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipCreateMetafileFromFile(
  file: PWideChar;   // LPCWSTR
  metafile: Pointer   // GpMetafile** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateMetafileFromFile';

result := DllCall("gdiplus\GdipCreateMetafileFromFile"
    , "WStr", file   ; LPCWSTR
    , "Ptr", metafile   ; GpMetafile** in/out
    , "Int")   ; return: Status

●GdipCreateMetafileFromFile(file, metafile) = DLL("gdiplus.dll", "int GdipCreateMetafileFromFile(char*, void*)")
# 呼び出し: GdipCreateMetafileFromFile(file, metafile)
# file : LPCWSTR -> "char*"
# metafile : GpMetafile** in/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)。