StgPropertyLengthAsVariant

// ole32.dll
#include <windows.h>

DWORD StgPropertyLengthAsVariant(
    const SERIALIZEDPROPERTYVALUE* pProp,
    DWORD cbProp,
    WORD CodePage,
    BYTE bReserved   // optional
);

<DllImport("ole32.dll", ExactSpelling:=True)>
Public Shared Function StgPropertyLengthAsVariant(
    pProp As IntPtr,   ' SERIALIZEDPROPERTYVALUE*
    cbProp As UInteger,   ' DWORD
    CodePage As UShort,   ' WORD
    bReserved As Byte   ' BYTE optional
) As UInteger
End Function

' pProp : SERIALIZEDPROPERTYVALUE*
' cbProp : DWORD
' CodePage : WORD
' bReserved : BYTE optional
Declare PtrSafe Function StgPropertyLengthAsVariant Lib "ole32" ( _
    ByVal pProp As LongPtr, _
    ByVal cbProp As Long, _
    ByVal CodePage As Integer, _
    ByVal bReserved As Byte) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

StgPropertyLengthAsVariant = ctypes.windll.ole32.StgPropertyLengthAsVariant
StgPropertyLengthAsVariant.restype = wintypes.DWORD
StgPropertyLengthAsVariant.argtypes = [
    ctypes.c_void_p,  # pProp : SERIALIZEDPROPERTYVALUE*
    wintypes.DWORD,  # cbProp : DWORD
    ctypes.c_ushort,  # CodePage : WORD
    ctypes.c_ubyte,  # bReserved : BYTE optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ole32.dll')
StgPropertyLengthAsVariant = Fiddle::Function.new(
  lib['StgPropertyLengthAsVariant'],
  [
    Fiddle::TYPE_VOIDP,  # pProp : SERIALIZEDPROPERTYVALUE*
    -Fiddle::TYPE_INT,  # cbProp : DWORD
    -Fiddle::TYPE_SHORT,  # CodePage : WORD
    -Fiddle::TYPE_CHAR,  # bReserved : BYTE optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn StgPropertyLengthAsVariant(
        pProp: *const SERIALIZEDPROPERTYVALUE,  // SERIALIZEDPROPERTYVALUE*
        cbProp: u32,  // DWORD
        CodePage: u16,  // WORD
        bReserved: u8  // BYTE optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ole32.dll")]
public static extern uint StgPropertyLengthAsVariant(IntPtr pProp, uint cbProp, ushort CodePage, byte bReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ole32_StgPropertyLengthAsVariant' -Namespace Win32 -PassThru
# $api::StgPropertyLengthAsVariant(pProp, cbProp, CodePage, bReserved)

#uselib "ole32.dll"
#func global StgPropertyLengthAsVariant "StgPropertyLengthAsVariant" sptr, sptr, sptr, sptr
; StgPropertyLengthAsVariant varptr(pProp), cbProp, CodePage, bReserved   ; 戻り値は stat
; pProp : SERIALIZEDPROPERTYVALUE* -> "sptr"
; cbProp : DWORD -> "sptr"
; CodePage : WORD -> "sptr"
; bReserved : BYTE 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 "ole32.dll"
#cfunc global StgPropertyLengthAsVariant "StgPropertyLengthAsVariant" var, int, int, int
; res = StgPropertyLengthAsVariant(pProp, cbProp, CodePage, bReserved)
; pProp : SERIALIZEDPROPERTYVALUE* -> "var"
; cbProp : DWORD -> "int"
; CodePage : WORD -> "int"
; bReserved : BYTE optional -> "int"
; ※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。

; DWORD StgPropertyLengthAsVariant(SERIALIZEDPROPERTYVALUE* pProp, DWORD cbProp, WORD CodePage, BYTE bReserved)
#uselib "ole32.dll"
#cfunc global StgPropertyLengthAsVariant "StgPropertyLengthAsVariant" var, int, int, int
; res = StgPropertyLengthAsVariant(pProp, cbProp, CodePage, bReserved)
; pProp : SERIALIZEDPROPERTYVALUE* -> "var"
; cbProp : DWORD -> "int"
; CodePage : WORD -> "int"
; bReserved : BYTE optional -> "int"
; ※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")
	procStgPropertyLengthAsVariant = ole32.NewProc("StgPropertyLengthAsVariant")
)

// pProp (SERIALIZEDPROPERTYVALUE*), cbProp (DWORD), CodePage (WORD), bReserved (BYTE optional)
r1, _, err := procStgPropertyLengthAsVariant.Call(
	uintptr(pProp),
	uintptr(cbProp),
	uintptr(CodePage),
	uintptr(bReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function StgPropertyLengthAsVariant(
  pProp: Pointer;   // SERIALIZEDPROPERTYVALUE*
  cbProp: DWORD;   // DWORD
  CodePage: Word;   // WORD
  bReserved: Byte   // BYTE optional
): DWORD; stdcall;
  external 'ole32.dll' name 'StgPropertyLengthAsVariant';

result := DllCall("ole32\StgPropertyLengthAsVariant"
    , "Ptr", pProp   ; SERIALIZEDPROPERTYVALUE*
    , "UInt", cbProp   ; DWORD
    , "UShort", CodePage   ; WORD
    , "UChar", bReserved   ; BYTE optional
    , "UInt")   ; return: DWORD

●StgPropertyLengthAsVariant(pProp, cbProp, CodePage, bReserved) = DLL("ole32.dll", "dword StgPropertyLengthAsVariant(void*, dword, int, byte)")
# 呼び出し: StgPropertyLengthAsVariant(pProp, cbProp, CodePage, bReserved)
# pProp : SERIALIZEDPROPERTYVALUE* -> "void*"
# cbProp : DWORD -> "dword"
# CodePage : WORD -> "int"
# bReserved : BYTE optional -> "byte"
# 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)。