JetRestore2W

// ESENT.dll  (Unicode / -W)
#include <windows.h>

INT JetRestore2W(
    WORD* sz,
    WORD* szDest,   // optional
    JET_PFNSTATUS pfn   // optional
);

<DllImport("ESENT.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function JetRestore2W(
    ByRef sz As UShort,   ' WORD*
    szDest As IntPtr,   ' WORD* optional
    pfn As IntPtr   ' JET_PFNSTATUS optional
) As Integer
End Function

' sz : WORD*
' szDest : WORD* optional
' pfn : JET_PFNSTATUS optional
Declare PtrSafe Function JetRestore2W Lib "esent" ( _
    ByRef sz As Integer, _
    ByVal szDest As LongPtr, _
    ByVal pfn As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

JetRestore2W = ctypes.windll.esent.JetRestore2W
JetRestore2W.restype = ctypes.c_int
JetRestore2W.argtypes = [
    ctypes.POINTER(ctypes.c_ushort),  # sz : WORD*
    ctypes.POINTER(ctypes.c_ushort),  # szDest : WORD* optional
    ctypes.c_void_p,  # pfn : JET_PFNSTATUS optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetRestore2W = Fiddle::Function.new(
  lib['JetRestore2W'],
  [
    Fiddle::TYPE_VOIDP,  # sz : WORD*
    Fiddle::TYPE_VOIDP,  # szDest : WORD* optional
    Fiddle::TYPE_VOIDP,  # pfn : JET_PFNSTATUS optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "esent")]
extern "system" {
    fn JetRestore2W(
        sz: *mut u16,  // WORD*
        szDest: *mut u16,  // WORD* optional
        pfn: *const core::ffi::c_void  // JET_PFNSTATUS optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Unicode)]
public static extern int JetRestore2W(ref ushort sz, IntPtr szDest, IntPtr pfn);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetRestore2W' -Namespace Win32 -PassThru
# $api::JetRestore2W(sz, szDest, pfn)

#uselib "ESENT.dll"
#func global JetRestore2W "JetRestore2W" wptr, wptr, wptr
; JetRestore2W varptr(sz), varptr(szDest), pfn   ; 戻り値は stat
; sz : WORD* -> "wptr"
; szDest : WORD* optional -> "wptr"
; pfn : JET_PFNSTATUS optional -> "wptr"
; ※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 "ESENT.dll"
#cfunc global JetRestore2W "JetRestore2W" var, var, sptr
; res = JetRestore2W(sz, szDest, pfn)
; sz : WORD* -> "var"
; szDest : WORD* optional -> "var"
; pfn : JET_PFNSTATUS 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。

; INT JetRestore2W(WORD* sz, WORD* szDest, JET_PFNSTATUS pfn)
#uselib "ESENT.dll"
#cfunc global JetRestore2W "JetRestore2W" var, var, intptr
; res = JetRestore2W(sz, szDest, pfn)
; sz : WORD* -> "var"
; szDest : WORD* optional -> "var"
; pfn : JET_PFNSTATUS 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 (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetRestore2W = esent.NewProc("JetRestore2W")
)

// sz (WORD*), szDest (WORD* optional), pfn (JET_PFNSTATUS optional)
r1, _, err := procJetRestore2W.Call(
	uintptr(sz),
	uintptr(szDest),
	uintptr(pfn),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetRestore2W(
  sz: Pointer;   // WORD*
  szDest: Pointer;   // WORD* optional
  pfn: Pointer   // JET_PFNSTATUS optional
): Integer; stdcall;
  external 'ESENT.dll' name 'JetRestore2W';

result := DllCall("ESENT\JetRestore2W"
    , "Ptr", sz   ; WORD*
    , "Ptr", szDest   ; WORD* optional
    , "Ptr", pfn   ; JET_PFNSTATUS optional
    , "Int")   ; return: INT

●JetRestore2W(sz, szDest, pfn) = DLL("ESENT.dll", "int JetRestore2W(void*, void*, void*)")
# 呼び出し: JetRestore2W(sz, szDest, pfn)
# sz : WORD* -> "void*"
# szDest : WORD* optional -> "void*"
# pfn : JET_PFNSTATUS 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。