OleSaveToStreamEx

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

HRESULT OleSaveToStreamEx(
    IUnknown* piunk,
    IStream* pistm,
    BOOL fClearDirty
);

<DllImport("hlink.dll", ExactSpelling:=True)>
Public Shared Function OleSaveToStreamEx(
    piunk As IntPtr,   ' IUnknown*
    pistm As IntPtr,   ' IStream*
    fClearDirty As Boolean   ' BOOL
) As Integer
End Function

' piunk : IUnknown*
' pistm : IStream*
' fClearDirty : BOOL
Declare PtrSafe Function OleSaveToStreamEx Lib "hlink" ( _
    ByVal piunk As LongPtr, _
    ByVal pistm As LongPtr, _
    ByVal fClearDirty As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OleSaveToStreamEx = ctypes.windll.hlink.OleSaveToStreamEx
OleSaveToStreamEx.restype = ctypes.c_int
OleSaveToStreamEx.argtypes = [
    ctypes.c_void_p,  # piunk : IUnknown*
    ctypes.c_void_p,  # pistm : IStream*
    wintypes.BOOL,  # fClearDirty : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('hlink.dll')
OleSaveToStreamEx = Fiddle::Function.new(
  lib['OleSaveToStreamEx'],
  [
    Fiddle::TYPE_VOIDP,  # piunk : IUnknown*
    Fiddle::TYPE_VOIDP,  # pistm : IStream*
    Fiddle::TYPE_INT,  # fClearDirty : BOOL
  ],
  Fiddle::TYPE_INT)

#[link(name = "hlink")]
extern "system" {
    fn OleSaveToStreamEx(
        piunk: *mut core::ffi::c_void,  // IUnknown*
        pistm: *mut core::ffi::c_void,  // IStream*
        fClearDirty: i32  // BOOL
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("hlink.dll")]
public static extern int OleSaveToStreamEx(IntPtr piunk, IntPtr pistm, bool fClearDirty);
"@
$api = Add-Type -MemberDefinition $sig -Name 'hlink_OleSaveToStreamEx' -Namespace Win32 -PassThru
# $api::OleSaveToStreamEx(piunk, pistm, fClearDirty)

#uselib "hlink.dll"
#func global OleSaveToStreamEx "OleSaveToStreamEx" sptr, sptr, sptr
; OleSaveToStreamEx piunk, pistm, fClearDirty   ; 戻り値は stat
; piunk : IUnknown* -> "sptr"
; pistm : IStream* -> "sptr"
; fClearDirty : BOOL -> "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 "hlink.dll"
#cfunc global OleSaveToStreamEx "OleSaveToStreamEx" sptr, sptr, int
; res = OleSaveToStreamEx(piunk, pistm, fClearDirty)
; piunk : IUnknown* -> "sptr"
; pistm : IStream* -> "sptr"
; fClearDirty : BOOL -> "int"

; HRESULT OleSaveToStreamEx(IUnknown* piunk, IStream* pistm, BOOL fClearDirty)
#uselib "hlink.dll"
#cfunc global OleSaveToStreamEx "OleSaveToStreamEx" intptr, intptr, int
; res = OleSaveToStreamEx(piunk, pistm, fClearDirty)
; piunk : IUnknown* -> "intptr"
; pistm : IStream* -> "intptr"
; fClearDirty : BOOL -> "int"

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

var (
	hlink = windows.NewLazySystemDLL("hlink.dll")
	procOleSaveToStreamEx = hlink.NewProc("OleSaveToStreamEx")
)

// piunk (IUnknown*), pistm (IStream*), fClearDirty (BOOL)
r1, _, err := procOleSaveToStreamEx.Call(
	uintptr(piunk),
	uintptr(pistm),
	uintptr(fClearDirty),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function OleSaveToStreamEx(
  piunk: Pointer;   // IUnknown*
  pistm: Pointer;   // IStream*
  fClearDirty: BOOL   // BOOL
): Integer; stdcall;
  external 'hlink.dll' name 'OleSaveToStreamEx';

result := DllCall("hlink\OleSaveToStreamEx"
    , "Ptr", piunk   ; IUnknown*
    , "Ptr", pistm   ; IStream*
    , "Int", fClearDirty   ; BOOL
    , "Int")   ; return: HRESULT

●OleSaveToStreamEx(piunk, pistm, fClearDirty) = DLL("hlink.dll", "int OleSaveToStreamEx(void*, void*, bool)")
# 呼び出し: OleSaveToStreamEx(piunk, pistm, fClearDirty)
# piunk : IUnknown* -> "void*"
# pistm : IStream* -> "void*"
# fClearDirty : BOOL -> "bool"
# 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)。