LpValFindProp

// MAPI32.dll
#include <windows.h>

SPropValue* LpValFindProp(
    DWORD ulPropTag,
    DWORD cValues,
    SPropValue* lpPropArray
);

<DllImport("MAPI32.dll", ExactSpelling:=True)>
Public Shared Function LpValFindProp(
    ulPropTag As UInteger,   ' DWORD
    cValues As UInteger,   ' DWORD
    lpPropArray As IntPtr   ' SPropValue* in/out
) As IntPtr
End Function

' ulPropTag : DWORD
' cValues : DWORD
' lpPropArray : SPropValue* in/out
Declare PtrSafe Function LpValFindProp Lib "mapi32" ( _
    ByVal ulPropTag As Long, _
    ByVal cValues As Long, _
    ByVal lpPropArray As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

LpValFindProp = ctypes.windll.mapi32.LpValFindProp
LpValFindProp.restype = ctypes.c_void_p
LpValFindProp.argtypes = [
    wintypes.DWORD,  # ulPropTag : DWORD
    wintypes.DWORD,  # cValues : DWORD
    ctypes.c_void_p,  # lpPropArray : SPropValue* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MAPI32.dll')
LpValFindProp = Fiddle::Function.new(
  lib['LpValFindProp'],
  [
    -Fiddle::TYPE_INT,  # ulPropTag : DWORD
    -Fiddle::TYPE_INT,  # cValues : DWORD
    Fiddle::TYPE_VOIDP,  # lpPropArray : SPropValue* in/out
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "mapi32")]
extern "system" {
    fn LpValFindProp(
        ulPropTag: u32,  // DWORD
        cValues: u32,  // DWORD
        lpPropArray: *mut SPropValue  // SPropValue* in/out
    ) -> *mut SPropValue;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MAPI32.dll")]
public static extern IntPtr LpValFindProp(uint ulPropTag, uint cValues, IntPtr lpPropArray);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MAPI32_LpValFindProp' -Namespace Win32 -PassThru
# $api::LpValFindProp(ulPropTag, cValues, lpPropArray)

#uselib "MAPI32.dll"
#func global LpValFindProp "LpValFindProp" sptr, sptr, sptr
; LpValFindProp ulPropTag, cValues, varptr(lpPropArray)   ; 戻り値は stat
; ulPropTag : DWORD -> "sptr"
; cValues : DWORD -> "sptr"
; lpPropArray : SPropValue* in/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 "MAPI32.dll"
#cfunc global LpValFindProp "LpValFindProp" int, int, var
; res = LpValFindProp(ulPropTag, cValues, lpPropArray)
; ulPropTag : DWORD -> "int"
; cValues : DWORD -> "int"
; lpPropArray : SPropValue* in/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。

; SPropValue* LpValFindProp(DWORD ulPropTag, DWORD cValues, SPropValue* lpPropArray)
#uselib "MAPI32.dll"
#cfunc global LpValFindProp "LpValFindProp" int, int, var
; res = LpValFindProp(ulPropTag, cValues, lpPropArray)
; ulPropTag : DWORD -> "int"
; cValues : DWORD -> "int"
; lpPropArray : SPropValue* in/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 (
	mapi32 = windows.NewLazySystemDLL("MAPI32.dll")
	procLpValFindProp = mapi32.NewProc("LpValFindProp")
)

// ulPropTag (DWORD), cValues (DWORD), lpPropArray (SPropValue* in/out)
r1, _, err := procLpValFindProp.Call(
	uintptr(ulPropTag),
	uintptr(cValues),
	uintptr(lpPropArray),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SPropValue*

function LpValFindProp(
  ulPropTag: DWORD;   // DWORD
  cValues: DWORD;   // DWORD
  lpPropArray: Pointer   // SPropValue* in/out
): Pointer; stdcall;
  external 'MAPI32.dll' name 'LpValFindProp';

result := DllCall("MAPI32\LpValFindProp"
    , "UInt", ulPropTag   ; DWORD
    , "UInt", cValues   ; DWORD
    , "Ptr", lpPropArray   ; SPropValue* in/out
    , "Ptr")   ; return: SPropValue*

●LpValFindProp(ulPropTag, cValues, lpPropArray) = DLL("MAPI32.dll", "void* LpValFindProp(dword, dword, void*)")
# 呼び出し: LpValFindProp(ulPropTag, cValues, lpPropArray)
# ulPropTag : DWORD -> "dword"
# cValues : DWORD -> "dword"
# lpPropArray : SPropValue* in/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)。