InitVariantFromStrRet

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

HRESULT InitVariantFromStrRet(
    STRRET* pstrret,
    ITEMIDLIST* pidl,
    VARIANT* pvar
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function InitVariantFromStrRet(
    pstrret As IntPtr,   ' STRRET*
    pidl As IntPtr,   ' ITEMIDLIST*
    pvar As IntPtr   ' VARIANT* out
) As Integer
End Function

' pstrret : STRRET*
' pidl : ITEMIDLIST*
' pvar : VARIANT* out
Declare PtrSafe Function InitVariantFromStrRet Lib "propsys" ( _
    ByVal pstrret As LongPtr, _
    ByVal pidl As LongPtr, _
    ByVal pvar 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

InitVariantFromStrRet = ctypes.windll.propsys.InitVariantFromStrRet
InitVariantFromStrRet.restype = ctypes.c_int
InitVariantFromStrRet.argtypes = [
    ctypes.c_void_p,  # pstrret : STRRET*
    ctypes.c_void_p,  # pidl : ITEMIDLIST*
    ctypes.c_void_p,  # pvar : VARIANT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
InitVariantFromStrRet = Fiddle::Function.new(
  lib['InitVariantFromStrRet'],
  [
    Fiddle::TYPE_VOIDP,  # pstrret : STRRET*
    Fiddle::TYPE_VOIDP,  # pidl : ITEMIDLIST*
    Fiddle::TYPE_VOIDP,  # pvar : VARIANT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn InitVariantFromStrRet(
        pstrret: *mut STRRET,  // STRRET*
        pidl: *mut ITEMIDLIST,  // ITEMIDLIST*
        pvar: *mut VARIANT  // VARIANT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int InitVariantFromStrRet(IntPtr pstrret, IntPtr pidl, IntPtr pvar);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_InitVariantFromStrRet' -Namespace Win32 -PassThru
# $api::InitVariantFromStrRet(pstrret, pidl, pvar)

#uselib "PROPSYS.dll"
#func global InitVariantFromStrRet "InitVariantFromStrRet" sptr, sptr, sptr
; InitVariantFromStrRet varptr(pstrret), varptr(pidl), varptr(pvar)   ; 戻り値は stat
; pstrret : STRRET* -> "sptr"
; pidl : ITEMIDLIST* -> "sptr"
; pvar : VARIANT* 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 "PROPSYS.dll"
#cfunc global InitVariantFromStrRet "InitVariantFromStrRet" var, var, var
; res = InitVariantFromStrRet(pstrret, pidl, pvar)
; pstrret : STRRET* -> "var"
; pidl : ITEMIDLIST* -> "var"
; pvar : VARIANT* out -> "var"
; ※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 InitVariantFromStrRet(STRRET* pstrret, ITEMIDLIST* pidl, VARIANT* pvar)
#uselib "PROPSYS.dll"
#cfunc global InitVariantFromStrRet "InitVariantFromStrRet" var, var, var
; res = InitVariantFromStrRet(pstrret, pidl, pvar)
; pstrret : STRRET* -> "var"
; pidl : ITEMIDLIST* -> "var"
; pvar : VARIANT* out -> "var"
; ※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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procInitVariantFromStrRet = propsys.NewProc("InitVariantFromStrRet")
)

// pstrret (STRRET*), pidl (ITEMIDLIST*), pvar (VARIANT* out)
r1, _, err := procInitVariantFromStrRet.Call(
	uintptr(pstrret),
	uintptr(pidl),
	uintptr(pvar),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function InitVariantFromStrRet(
  pstrret: Pointer;   // STRRET*
  pidl: Pointer;   // ITEMIDLIST*
  pvar: Pointer   // VARIANT* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'InitVariantFromStrRet';

result := DllCall("PROPSYS\InitVariantFromStrRet"
    , "Ptr", pstrret   ; STRRET*
    , "Ptr", pidl   ; ITEMIDLIST*
    , "Ptr", pvar   ; VARIANT* out
    , "Int")   ; return: HRESULT

●InitVariantFromStrRet(pstrret, pidl, pvar) = DLL("PROPSYS.dll", "int InitVariantFromStrRet(void*, void*, void*)")
# 呼び出し: InitVariantFromStrRet(pstrret, pidl, pvar)
# pstrret : STRRET* -> "void*"
# pidl : ITEMIDLIST* -> "void*"
# pvar : VARIANT* 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)。