OleLoadPictureFile

// OLEAUT32.dll
#include <windows.h>

HRESULT OleLoadPictureFile(
    VARIANT varFileName,
    IDispatch** lplpdispPicture
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function OleLoadPictureFile(
    varFileName As VARIANT,   ' VARIANT
    lplpdispPicture As IntPtr   ' IDispatch** out
) As Integer
End Function

' varFileName : VARIANT
' lplpdispPicture : IDispatch** out
Declare PtrSafe Function OleLoadPictureFile Lib "oleaut32" ( _
    ByVal varFileName As LongPtr, _
    ByVal lplpdispPicture 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

OleLoadPictureFile = ctypes.windll.oleaut32.OleLoadPictureFile
OleLoadPictureFile.restype = ctypes.c_int
OleLoadPictureFile.argtypes = [
    VARIANT,  # varFileName : VARIANT
    ctypes.c_void_p,  # lplpdispPicture : IDispatch** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
OleLoadPictureFile = Fiddle::Function.new(
  lib['OleLoadPictureFile'],
  [
    Fiddle::TYPE_VOIDP,  # varFileName : VARIANT
    Fiddle::TYPE_VOIDP,  # lplpdispPicture : IDispatch** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn OleLoadPictureFile(
        varFileName: VARIANT,  // VARIANT
        lplpdispPicture: *mut *mut core::ffi::c_void  // IDispatch** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int OleLoadPictureFile(VARIANT varFileName, IntPtr lplpdispPicture);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_OleLoadPictureFile' -Namespace Win32 -PassThru
# $api::OleLoadPictureFile(varFileName, lplpdispPicture)

#uselib "OLEAUT32.dll"
#func global OleLoadPictureFile "OleLoadPictureFile" sptr, sptr
; OleLoadPictureFile varFileName, lplpdispPicture   ; 戻り値は stat
; varFileName : VARIANT -> "sptr"
; lplpdispPicture : IDispatch** out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "OLEAUT32.dll"
#cfunc global OleLoadPictureFile "OleLoadPictureFile" int, sptr
; res = OleLoadPictureFile(varFileName, lplpdispPicture)
; varFileName : VARIANT -> "int"
; lplpdispPicture : IDispatch** out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

; HRESULT OleLoadPictureFile(VARIANT varFileName, IDispatch** lplpdispPicture)
#uselib "OLEAUT32.dll"
#cfunc global OleLoadPictureFile "OleLoadPictureFile" int, intptr
; res = OleLoadPictureFile(varFileName, lplpdispPicture)
; varFileName : VARIANT -> "int"
; lplpdispPicture : IDispatch** out -> "intptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

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

var (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procOleLoadPictureFile = oleaut32.NewProc("OleLoadPictureFile")
)

// varFileName (VARIANT), lplpdispPicture (IDispatch** out)
r1, _, err := procOleLoadPictureFile.Call(
	uintptr(varFileName),
	uintptr(lplpdispPicture),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function OleLoadPictureFile(
  varFileName: VARIANT;   // VARIANT
  lplpdispPicture: Pointer   // IDispatch** out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'OleLoadPictureFile';

result := DllCall("OLEAUT32\OleLoadPictureFile"
    , "Ptr", varFileName   ; VARIANT
    , "Ptr", lplpdispPicture   ; IDispatch** out
    , "Int")   ; return: HRESULT

●OleLoadPictureFile(varFileName, lplpdispPicture) = DLL("OLEAUT32.dll", "int OleLoadPictureFile(void*, void*)")
# 呼び出し: OleLoadPictureFile(varFileName, lplpdispPicture)
# varFileName : VARIANT -> "void*"
# lplpdispPicture : IDispatch** 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)。