CreateDataCache

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

HRESULT CreateDataCache(
    IUnknown* pUnkOuter,   // optional
    const GUID* rclsid,
    const GUID* iid,
    void** ppv
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CreateDataCache(
    pUnkOuter As IntPtr,   ' IUnknown* optional
    ByRef rclsid As Guid,   ' GUID*
    ByRef iid As Guid,   ' GUID*
    ppv As IntPtr   ' void** out
) As Integer
End Function

' pUnkOuter : IUnknown* optional
' rclsid : GUID*
' iid : GUID*
' ppv : void** out
Declare PtrSafe Function CreateDataCache Lib "ole32" ( _
    ByVal pUnkOuter As LongPtr, _
    ByVal rclsid As LongPtr, _
    ByVal iid As LongPtr, _
    ByVal ppv 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

CreateDataCache = ctypes.windll.ole32.CreateDataCache
CreateDataCache.restype = ctypes.c_int
CreateDataCache.argtypes = [
    ctypes.c_void_p,  # pUnkOuter : IUnknown* optional
    ctypes.c_void_p,  # rclsid : GUID*
    ctypes.c_void_p,  # iid : GUID*
    ctypes.c_void_p,  # ppv : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CreateDataCache = Fiddle::Function.new(
  lib['CreateDataCache'],
  [
    Fiddle::TYPE_VOIDP,  # pUnkOuter : IUnknown* optional
    Fiddle::TYPE_VOIDP,  # rclsid : GUID*
    Fiddle::TYPE_VOIDP,  # iid : GUID*
    Fiddle::TYPE_VOIDP,  # ppv : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CreateDataCache(
        pUnkOuter: *mut core::ffi::c_void,  // IUnknown* optional
        rclsid: *const GUID,  // GUID*
        iid: *const GUID,  // GUID*
        ppv: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CreateDataCache(IntPtr pUnkOuter, ref Guid rclsid, ref Guid iid, IntPtr ppv);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CreateDataCache' -Namespace Win32 -PassThru
# $api::CreateDataCache(pUnkOuter, rclsid, iid, ppv)

#uselib "OLE32.dll"
#func global CreateDataCache "CreateDataCache" sptr, sptr, sptr, sptr
; CreateDataCache pUnkOuter, varptr(rclsid), varptr(iid), ppv   ; 戻り値は stat
; pUnkOuter : IUnknown* optional -> "sptr"
; rclsid : GUID* -> "sptr"
; iid : GUID* -> "sptr"
; ppv : void** 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 CreateDataCache "CreateDataCache" sptr, var, var, sptr
; res = CreateDataCache(pUnkOuter, rclsid, iid, ppv)
; pUnkOuter : IUnknown* optional -> "sptr"
; rclsid : GUID* -> "var"
; iid : GUID* -> "var"
; ppv : void** out -> "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 CreateDataCache(IUnknown* pUnkOuter, GUID* rclsid, GUID* iid, void** ppv)
#uselib "OLE32.dll"
#cfunc global CreateDataCache "CreateDataCache" intptr, var, var, intptr
; res = CreateDataCache(pUnkOuter, rclsid, iid, ppv)
; pUnkOuter : IUnknown* optional -> "intptr"
; rclsid : GUID* -> "var"
; iid : GUID* -> "var"
; ppv : void** out -> "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 (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCreateDataCache = ole32.NewProc("CreateDataCache")
)

// pUnkOuter (IUnknown* optional), rclsid (GUID*), iid (GUID*), ppv (void** out)
r1, _, err := procCreateDataCache.Call(
	uintptr(pUnkOuter),
	uintptr(rclsid),
	uintptr(iid),
	uintptr(ppv),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CreateDataCache(
  pUnkOuter: Pointer;   // IUnknown* optional
  rclsid: PGUID;   // GUID*
  iid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CreateDataCache';

result := DllCall("OLE32\CreateDataCache"
    , "Ptr", pUnkOuter   ; IUnknown* optional
    , "Ptr", rclsid   ; GUID*
    , "Ptr", iid   ; GUID*
    , "Ptr", ppv   ; void** out
    , "Int")   ; return: HRESULT

●CreateDataCache(pUnkOuter, rclsid, iid, ppv) = DLL("OLE32.dll", "int CreateDataCache(void*, void*, void*, void*)")
# 呼び出し: CreateDataCache(pUnkOuter, rclsid, iid, ppv)
# pUnkOuter : IUnknown* optional -> "void*"
# rclsid : GUID* -> "void*"
# iid : GUID* -> "void*"
# ppv : void** 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)。