GetHGlobalFromStream

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

HRESULT GetHGlobalFromStream(
    IStream* pstm,
    HGLOBAL* phglobal
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function GetHGlobalFromStream(
    pstm As IntPtr,   ' IStream*
    phglobal As IntPtr   ' HGLOBAL* out
) As Integer
End Function

' pstm : IStream*
' phglobal : HGLOBAL* out
Declare PtrSafe Function GetHGlobalFromStream Lib "ole32" ( _
    ByVal pstm As LongPtr, _
    ByVal phglobal 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

GetHGlobalFromStream = ctypes.windll.ole32.GetHGlobalFromStream
GetHGlobalFromStream.restype = ctypes.c_int
GetHGlobalFromStream.argtypes = [
    ctypes.c_void_p,  # pstm : IStream*
    ctypes.c_void_p,  # phglobal : HGLOBAL* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
GetHGlobalFromStream = Fiddle::Function.new(
  lib['GetHGlobalFromStream'],
  [
    Fiddle::TYPE_VOIDP,  # pstm : IStream*
    Fiddle::TYPE_VOIDP,  # phglobal : HGLOBAL* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn GetHGlobalFromStream(
        pstm: *mut core::ffi::c_void,  // IStream*
        phglobal: *mut *mut core::ffi::c_void  // HGLOBAL* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int GetHGlobalFromStream(IntPtr pstm, IntPtr phglobal);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_GetHGlobalFromStream' -Namespace Win32 -PassThru
# $api::GetHGlobalFromStream(pstm, phglobal)

#uselib "OLE32.dll"
#func global GetHGlobalFromStream "GetHGlobalFromStream" sptr, sptr
; GetHGlobalFromStream pstm, phglobal   ; 戻り値は stat
; pstm : IStream* -> "sptr"
; phglobal : HGLOBAL* 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 "OLE32.dll"
#cfunc global GetHGlobalFromStream "GetHGlobalFromStream" sptr, sptr
; res = GetHGlobalFromStream(pstm, phglobal)
; pstm : IStream* -> "sptr"
; phglobal : HGLOBAL* out -> "sptr"

; HRESULT GetHGlobalFromStream(IStream* pstm, HGLOBAL* phglobal)
#uselib "OLE32.dll"
#cfunc global GetHGlobalFromStream "GetHGlobalFromStream" intptr, intptr
; res = GetHGlobalFromStream(pstm, phglobal)
; pstm : IStream* -> "intptr"
; phglobal : HGLOBAL* out -> "intptr"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procGetHGlobalFromStream = ole32.NewProc("GetHGlobalFromStream")
)

// pstm (IStream*), phglobal (HGLOBAL* out)
r1, _, err := procGetHGlobalFromStream.Call(
	uintptr(pstm),
	uintptr(phglobal),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetHGlobalFromStream(
  pstm: Pointer;   // IStream*
  phglobal: Pointer   // HGLOBAL* out
): Integer; stdcall;
  external 'OLE32.dll' name 'GetHGlobalFromStream';

result := DllCall("OLE32\GetHGlobalFromStream"
    , "Ptr", pstm   ; IStream*
    , "Ptr", phglobal   ; HGLOBAL* out
    , "Int")   ; return: HRESULT

●GetHGlobalFromStream(pstm, phglobal) = DLL("OLE32.dll", "int GetHGlobalFromStream(void*, void*)")
# 呼び出し: GetHGlobalFromStream(pstm, phglobal)
# pstm : IStream* -> "void*"
# phglobal : HGLOBAL* 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)。

const std = @import("std");

extern "ole32" fn GetHGlobalFromStream(
    pstm: ?*anyopaque, // IStream*
    phglobal: ?*anyopaque // HGLOBAL* out
) callconv(std.os.windows.WINAPI) i32;

proc GetHGlobalFromStream(
    pstm: pointer,  # IStream*
    phglobal: pointer  # HGLOBAL* out
): int32 {.importc: "GetHGlobalFromStream", stdcall, dynlib: "OLE32.dll".}

pragma(lib, "ole32");
extern(Windows)
int GetHGlobalFromStream(
    void* pstm,   // IStream*
    void* phglobal   // HGLOBAL* out
);

ccall((:GetHGlobalFromStream, "OLE32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Cvoid}),
      pstm, phglobal)
# pstm : IStream* -> Ptr{Cvoid}
# phglobal : HGLOBAL* out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GetHGlobalFromStream(
    void* pstm,
    void* phglobal);
]]
local ole32 = ffi.load("ole32")
-- ole32.GetHGlobalFromStream(pstm, phglobal)
-- pstm : IStream*
-- phglobal : HGLOBAL* out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('OLE32.dll');
const GetHGlobalFromStream = lib.func('__stdcall', 'GetHGlobalFromStream', 'int32_t', ['void *', 'void *']);
// GetHGlobalFromStream(pstm, phglobal)
// pstm : IStream* -> 'void *'
// phglobal : HGLOBAL* out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("OLE32.dll", {
  GetHGlobalFromStream: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.GetHGlobalFromStream(pstm, phglobal)
// pstm : IStream* -> "pointer"
// phglobal : HGLOBAL* out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t GetHGlobalFromStream(
    void* pstm,
    void* phglobal);
C, "OLE32.dll");
// $ffi->GetHGlobalFromStream(pstm, phglobal);
// pstm : IStream*
// phglobal : HGLOBAL* out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Ole32 extends StdCallLibrary {
    Ole32 INSTANCE = Native.load("ole32", Ole32.class);
    int GetHGlobalFromStream(
        Pointer pstm,   // IStream*
        Pointer phglobal   // HGLOBAL* out
    );
}

@[Link("ole32")]
lib LibOLE32
  fun GetHGlobalFromStream = GetHGlobalFromStream(
    pstm : Void*,   # IStream*
    phglobal : Void*   # HGLOBAL* out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef GetHGlobalFromStreamNative = Int32 Function(Pointer<Void>, Pointer<Void>);
typedef GetHGlobalFromStreamDart = int Function(Pointer<Void>, Pointer<Void>);
final GetHGlobalFromStream = DynamicLibrary.open('OLE32.dll')
    .lookupFunction<GetHGlobalFromStreamNative, GetHGlobalFromStreamDart>('GetHGlobalFromStream');
// pstm : IStream* -> Pointer<Void>
// phglobal : HGLOBAL* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetHGlobalFromStream(
  pstm: Pointer;   // IStream*
  phglobal: Pointer   // HGLOBAL* out
): Integer; stdcall;
  external 'OLE32.dll' name 'GetHGlobalFromStream';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GetHGlobalFromStream"
  c_GetHGlobalFromStream :: Ptr () -> Ptr () -> IO Int32
-- pstm : IStream* -> Ptr ()
-- phglobal : HGLOBAL* out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let gethglobalfromstream =
  foreign "GetHGlobalFromStream"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* pstm : IStream* -> (ptr void) *)
(* phglobal : HGLOBAL* out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library ole32 (t "OLE32.dll"))
(cffi:use-foreign-library ole32)

(cffi:defcfun ("GetHGlobalFromStream" get-hglobal-from-stream :convention :stdcall) :int32
  (pstm :pointer)   ; IStream*
  (phglobal :pointer))   ; HGLOBAL* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetHGlobalFromStream = Win32::API::More->new('OLE32',
    'int GetHGlobalFromStream(LPVOID pstm, HANDLE phglobal)');
# my $ret = $GetHGlobalFromStream->Call($pstm, $phglobal);
# pstm : IStream* -> LPVOID
# phglobal : HGLOBAL* out -> HANDLE
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。