ImageList_WriteEx

// COMCTL32.dll
#include <windows.h>

HRESULT ImageList_WriteEx(
    HIMAGELIST himl,
    IMAGE_LIST_WRITE_STREAM_FLAGS dwFlags,
    IStream* pstm
);

<DllImport("COMCTL32.dll", ExactSpelling:=True)>
Public Shared Function ImageList_WriteEx(
    himl As IntPtr,   ' HIMAGELIST
    dwFlags As UInteger,   ' IMAGE_LIST_WRITE_STREAM_FLAGS
    pstm As IntPtr   ' IStream*
) As Integer
End Function

' himl : HIMAGELIST
' dwFlags : IMAGE_LIST_WRITE_STREAM_FLAGS
' pstm : IStream*
Declare PtrSafe Function ImageList_WriteEx Lib "comctl32" ( _
    ByVal himl As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal pstm 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

ImageList_WriteEx = ctypes.windll.comctl32.ImageList_WriteEx
ImageList_WriteEx.restype = ctypes.c_int
ImageList_WriteEx.argtypes = [
    ctypes.c_ssize_t,  # himl : HIMAGELIST
    wintypes.DWORD,  # dwFlags : IMAGE_LIST_WRITE_STREAM_FLAGS
    ctypes.c_void_p,  # pstm : IStream*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('COMCTL32.dll')
ImageList_WriteEx = Fiddle::Function.new(
  lib['ImageList_WriteEx'],
  [
    Fiddle::TYPE_INTPTR_T,  # himl : HIMAGELIST
    -Fiddle::TYPE_INT,  # dwFlags : IMAGE_LIST_WRITE_STREAM_FLAGS
    Fiddle::TYPE_VOIDP,  # pstm : IStream*
  ],
  Fiddle::TYPE_INT)

#[link(name = "comctl32")]
extern "system" {
    fn ImageList_WriteEx(
        himl: isize,  // HIMAGELIST
        dwFlags: u32,  // IMAGE_LIST_WRITE_STREAM_FLAGS
        pstm: *mut core::ffi::c_void  // IStream*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("COMCTL32.dll")]
public static extern int ImageList_WriteEx(IntPtr himl, uint dwFlags, IntPtr pstm);
"@
$api = Add-Type -MemberDefinition $sig -Name 'COMCTL32_ImageList_WriteEx' -Namespace Win32 -PassThru
# $api::ImageList_WriteEx(himl, dwFlags, pstm)

#uselib "COMCTL32.dll"
#func global ImageList_WriteEx "ImageList_WriteEx" sptr, sptr, sptr
; ImageList_WriteEx himl, dwFlags, pstm   ; 戻り値は stat
; himl : HIMAGELIST -> "sptr"
; dwFlags : IMAGE_LIST_WRITE_STREAM_FLAGS -> "sptr"
; pstm : IStream* -> "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 "COMCTL32.dll"
#cfunc global ImageList_WriteEx "ImageList_WriteEx" sptr, int, sptr
; res = ImageList_WriteEx(himl, dwFlags, pstm)
; himl : HIMAGELIST -> "sptr"
; dwFlags : IMAGE_LIST_WRITE_STREAM_FLAGS -> "int"
; pstm : IStream* -> "sptr"

; HRESULT ImageList_WriteEx(HIMAGELIST himl, IMAGE_LIST_WRITE_STREAM_FLAGS dwFlags, IStream* pstm)
#uselib "COMCTL32.dll"
#cfunc global ImageList_WriteEx "ImageList_WriteEx" intptr, int, intptr
; res = ImageList_WriteEx(himl, dwFlags, pstm)
; himl : HIMAGELIST -> "intptr"
; dwFlags : IMAGE_LIST_WRITE_STREAM_FLAGS -> "int"
; pstm : IStream* -> "intptr"

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

var (
	comctl32 = windows.NewLazySystemDLL("COMCTL32.dll")
	procImageList_WriteEx = comctl32.NewProc("ImageList_WriteEx")
)

// himl (HIMAGELIST), dwFlags (IMAGE_LIST_WRITE_STREAM_FLAGS), pstm (IStream*)
r1, _, err := procImageList_WriteEx.Call(
	uintptr(himl),
	uintptr(dwFlags),
	uintptr(pstm),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function ImageList_WriteEx(
  himl: NativeInt;   // HIMAGELIST
  dwFlags: DWORD;   // IMAGE_LIST_WRITE_STREAM_FLAGS
  pstm: Pointer   // IStream*
): Integer; stdcall;
  external 'COMCTL32.dll' name 'ImageList_WriteEx';

result := DllCall("COMCTL32\ImageList_WriteEx"
    , "Ptr", himl   ; HIMAGELIST
    , "UInt", dwFlags   ; IMAGE_LIST_WRITE_STREAM_FLAGS
    , "Ptr", pstm   ; IStream*
    , "Int")   ; return: HRESULT

●ImageList_WriteEx(himl, dwFlags, pstm) = DLL("COMCTL32.dll", "int ImageList_WriteEx(int, dword, void*)")
# 呼び出し: ImageList_WriteEx(himl, dwFlags, pstm)
# himl : HIMAGELIST -> "int"
# dwFlags : IMAGE_LIST_WRITE_STREAM_FLAGS -> "dword"
# pstm : IStream* -> "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)。