OleRun

// OLE32.dll
#include <windows.h>

HRESULT OleRun(
    IUnknown* pUnknown
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function OleRun(
    pUnknown As IntPtr   ' IUnknown*
) As Integer
End Function

' pUnknown : IUnknown*
Declare PtrSafe Function OleRun Lib "ole32" ( _
    ByVal pUnknown 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

OleRun = ctypes.windll.ole32.OleRun
OleRun.restype = ctypes.c_int
OleRun.argtypes = [
    ctypes.c_void_p,  # pUnknown : IUnknown*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
OleRun = Fiddle::Function.new(
  lib['OleRun'],
  [
    Fiddle::TYPE_VOIDP,  # pUnknown : IUnknown*
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn OleRun(
        pUnknown: *mut core::ffi::c_void  // IUnknown*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int OleRun(IntPtr pUnknown);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_OleRun' -Namespace Win32 -PassThru
# $api::OleRun(pUnknown)

#uselib "OLE32.dll"
#func global OleRun "OleRun" sptr
; OleRun pUnknown   ; 戻り値は stat
; pUnknown : IUnknown* -> "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 "OLE32.dll"
#cfunc global OleRun "OleRun" sptr
; res = OleRun(pUnknown)
; pUnknown : IUnknown* -> "sptr"

; HRESULT OleRun(IUnknown* pUnknown)
#uselib "OLE32.dll"
#cfunc global OleRun "OleRun" intptr
; res = OleRun(pUnknown)
; pUnknown : IUnknown* -> "intptr"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procOleRun = ole32.NewProc("OleRun")
)

// pUnknown (IUnknown*)
r1, _, err := procOleRun.Call(
	uintptr(pUnknown),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function OleRun(
  pUnknown: Pointer   // IUnknown*
): Integer; stdcall;
  external 'OLE32.dll' name 'OleRun';

result := DllCall("OLE32\OleRun"
    , "Ptr", pUnknown   ; IUnknown*
    , "Int")   ; return: HRESULT

●OleRun(pUnknown) = DLL("OLE32.dll", "int OleRun(void*)")
# 呼び出し: OleRun(pUnknown)
# pUnknown : IUnknown* -> "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)。