GdipCreateStreamOnFile

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

Status GdipCreateStreamOnFile(
    LPCWSTR filename,
    DWORD access,
    IStream** stream
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreateStreamOnFile(
    <MarshalAs(UnmanagedType.LPWStr)> filename As String,   ' LPCWSTR
    access As UInteger,   ' DWORD
    stream As IntPtr   ' IStream** out
) As Integer
End Function

' filename : LPCWSTR
' access : DWORD
' stream : IStream** out
Declare PtrSafe Function GdipCreateStreamOnFile Lib "gdiplus" ( _
    ByVal filename As LongPtr, _
    ByVal access As Long, _
    ByVal stream 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

GdipCreateStreamOnFile = ctypes.windll.gdiplus.GdipCreateStreamOnFile
GdipCreateStreamOnFile.restype = ctypes.c_int
GdipCreateStreamOnFile.argtypes = [
    wintypes.LPCWSTR,  # filename : LPCWSTR
    wintypes.DWORD,  # access : DWORD
    ctypes.c_void_p,  # stream : IStream** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipCreateStreamOnFile = Fiddle::Function.new(
  lib['GdipCreateStreamOnFile'],
  [
    Fiddle::TYPE_VOIDP,  # filename : LPCWSTR
    -Fiddle::TYPE_INT,  # access : DWORD
    Fiddle::TYPE_VOIDP,  # stream : IStream** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipCreateStreamOnFile(
        filename: *const u16,  // LPCWSTR
        access: u32,  // DWORD
        stream: *mut *mut core::ffi::c_void  // IStream** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreateStreamOnFile([MarshalAs(UnmanagedType.LPWStr)] string filename, uint access, IntPtr stream);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreateStreamOnFile' -Namespace Win32 -PassThru
# $api::GdipCreateStreamOnFile(filename, access, stream)

#uselib "gdiplus.dll"
#func global GdipCreateStreamOnFile "GdipCreateStreamOnFile" sptr, sptr, sptr
; GdipCreateStreamOnFile filename, access, stream   ; 戻り値は stat
; filename : LPCWSTR -> "sptr"
; access : DWORD -> "sptr"
; stream : IStream** 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 "gdiplus.dll"
#cfunc global GdipCreateStreamOnFile "GdipCreateStreamOnFile" wstr, int, sptr
; res = GdipCreateStreamOnFile(filename, access, stream)
; filename : LPCWSTR -> "wstr"
; access : DWORD -> "int"
; stream : IStream** out -> "sptr"

; Status GdipCreateStreamOnFile(LPCWSTR filename, DWORD access, IStream** stream)
#uselib "gdiplus.dll"
#cfunc global GdipCreateStreamOnFile "GdipCreateStreamOnFile" wstr, int, intptr
; res = GdipCreateStreamOnFile(filename, access, stream)
; filename : LPCWSTR -> "wstr"
; access : DWORD -> "int"
; stream : IStream** out -> "intptr"

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

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipCreateStreamOnFile = gdiplus.NewProc("GdipCreateStreamOnFile")
)

// filename (LPCWSTR), access (DWORD), stream (IStream** out)
r1, _, err := procGdipCreateStreamOnFile.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(filename))),
	uintptr(access),
	uintptr(stream),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipCreateStreamOnFile(
  filename: PWideChar;   // LPCWSTR
  access: DWORD;   // DWORD
  stream: Pointer   // IStream** out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateStreamOnFile';

result := DllCall("gdiplus\GdipCreateStreamOnFile"
    , "WStr", filename   ; LPCWSTR
    , "UInt", access   ; DWORD
    , "Ptr", stream   ; IStream** out
    , "Int")   ; return: Status

●GdipCreateStreamOnFile(filename, access, stream) = DLL("gdiplus.dll", "int GdipCreateStreamOnFile(char*, dword, void*)")
# 呼び出し: GdipCreateStreamOnFile(filename, access, stream)
# filename : LPCWSTR -> "char*"
# access : DWORD -> "dword"
# stream : IStream** 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)。