CreateXmlReader

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

HRESULT CreateXmlReader(
    const GUID* riid,
    void** ppvObject,
    IMalloc* pMalloc   // optional
);

<DllImport("XmlLite.dll", ExactSpelling:=True)>
Public Shared Function CreateXmlReader(
    ByRef riid As Guid,   ' GUID*
    ppvObject As IntPtr,   ' void** out
    pMalloc As IntPtr   ' IMalloc* optional
) As Integer
End Function

' riid : GUID*
' ppvObject : void** out
' pMalloc : IMalloc* optional
Declare PtrSafe Function CreateXmlReader Lib "xmllite" ( _
    ByVal riid As LongPtr, _
    ByVal ppvObject As LongPtr, _
    ByVal pMalloc 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

CreateXmlReader = ctypes.windll.xmllite.CreateXmlReader
CreateXmlReader.restype = ctypes.c_int
CreateXmlReader.argtypes = [
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppvObject : void** out
    ctypes.c_void_p,  # pMalloc : IMalloc* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('XmlLite.dll')
CreateXmlReader = Fiddle::Function.new(
  lib['CreateXmlReader'],
  [
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppvObject : void** out
    Fiddle::TYPE_VOIDP,  # pMalloc : IMalloc* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "xmllite")]
extern "system" {
    fn CreateXmlReader(
        riid: *const GUID,  // GUID*
        ppvObject: *mut *mut (),  // void** out
        pMalloc: *mut core::ffi::c_void  // IMalloc* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("XmlLite.dll")]
public static extern int CreateXmlReader(ref Guid riid, IntPtr ppvObject, IntPtr pMalloc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'XmlLite_CreateXmlReader' -Namespace Win32 -PassThru
# $api::CreateXmlReader(riid, ppvObject, pMalloc)

#uselib "XmlLite.dll"
#func global CreateXmlReader "CreateXmlReader" sptr, sptr, sptr
; CreateXmlReader varptr(riid), ppvObject, pMalloc   ; 戻り値は stat
; riid : GUID* -> "sptr"
; ppvObject : void** out -> "sptr"
; pMalloc : IMalloc* optional -> "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 "XmlLite.dll"
#cfunc global CreateXmlReader "CreateXmlReader" var, sptr, sptr
; res = CreateXmlReader(riid, ppvObject, pMalloc)
; riid : GUID* -> "var"
; ppvObject : void** out -> "sptr"
; pMalloc : IMalloc* optional -> "sptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT CreateXmlReader(GUID* riid, void** ppvObject, IMalloc* pMalloc)
#uselib "XmlLite.dll"
#cfunc global CreateXmlReader "CreateXmlReader" var, intptr, intptr
; res = CreateXmlReader(riid, ppvObject, pMalloc)
; riid : GUID* -> "var"
; ppvObject : void** out -> "intptr"
; pMalloc : IMalloc* optional -> "intptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	xmllite = windows.NewLazySystemDLL("XmlLite.dll")
	procCreateXmlReader = xmllite.NewProc("CreateXmlReader")
)

// riid (GUID*), ppvObject (void** out), pMalloc (IMalloc* optional)
r1, _, err := procCreateXmlReader.Call(
	uintptr(riid),
	uintptr(ppvObject),
	uintptr(pMalloc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CreateXmlReader(
  riid: PGUID;   // GUID*
  ppvObject: Pointer;   // void** out
  pMalloc: Pointer   // IMalloc* optional
): Integer; stdcall;
  external 'XmlLite.dll' name 'CreateXmlReader';

result := DllCall("XmlLite\CreateXmlReader"
    , "Ptr", riid   ; GUID*
    , "Ptr", ppvObject   ; void** out
    , "Ptr", pMalloc   ; IMalloc* optional
    , "Int")   ; return: HRESULT

●CreateXmlReader(riid, ppvObject, pMalloc) = DLL("XmlLite.dll", "int CreateXmlReader(void*, void*, void*)")
# 呼び出し: CreateXmlReader(riid, ppvObject, pMalloc)
# riid : GUID* -> "void*"
# ppvObject : void** out -> "void*"
# pMalloc : IMalloc* optional -> "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)。