JetBackupInstanceW

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

INT JetBackupInstanceW(
    JET_INSTANCE instance,
    WORD* szBackupPath,
    DWORD grbit,
    JET_PFNSTATUS pfnStatus   // optional
);

<DllImport("ESENT.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function JetBackupInstanceW(
    instance As UIntPtr,   ' JET_INSTANCE
    ByRef szBackupPath As UShort,   ' WORD*
    grbit As UInteger,   ' DWORD
    pfnStatus As IntPtr   ' JET_PFNSTATUS optional
) As Integer
End Function

' instance : JET_INSTANCE
' szBackupPath : WORD*
' grbit : DWORD
' pfnStatus : JET_PFNSTATUS optional
Declare PtrSafe Function JetBackupInstanceW Lib "esent" ( _
    ByVal instance As LongPtr, _
    ByRef szBackupPath As Integer, _
    ByVal grbit As Long, _
    ByVal pfnStatus 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

JetBackupInstanceW = ctypes.windll.esent.JetBackupInstanceW
JetBackupInstanceW.restype = ctypes.c_int
JetBackupInstanceW.argtypes = [
    ctypes.c_size_t,  # instance : JET_INSTANCE
    ctypes.POINTER(ctypes.c_ushort),  # szBackupPath : WORD*
    wintypes.DWORD,  # grbit : DWORD
    ctypes.c_void_p,  # pfnStatus : JET_PFNSTATUS optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetBackupInstanceW = Fiddle::Function.new(
  lib['JetBackupInstanceW'],
  [
    Fiddle::TYPE_UINTPTR_T,  # instance : JET_INSTANCE
    Fiddle::TYPE_VOIDP,  # szBackupPath : WORD*
    -Fiddle::TYPE_INT,  # grbit : DWORD
    Fiddle::TYPE_VOIDP,  # pfnStatus : JET_PFNSTATUS optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "esent")]
extern "system" {
    fn JetBackupInstanceW(
        instance: usize,  // JET_INSTANCE
        szBackupPath: *mut u16,  // WORD*
        grbit: u32,  // DWORD
        pfnStatus: *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 JetBackupInstanceW(UIntPtr instance, ref ushort szBackupPath, uint grbit, IntPtr pfnStatus);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetBackupInstanceW' -Namespace Win32 -PassThru
# $api::JetBackupInstanceW(instance, szBackupPath, grbit, pfnStatus)

#uselib "ESENT.dll"
#func global JetBackupInstanceW "JetBackupInstanceW" wptr, wptr, wptr, wptr
; JetBackupInstanceW instance, varptr(szBackupPath), grbit, pfnStatus   ; 戻り値は stat
; instance : JET_INSTANCE -> "wptr"
; szBackupPath : WORD* -> "wptr"
; grbit : DWORD -> "wptr"
; pfnStatus : 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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetBackupInstanceW = esent.NewProc("JetBackupInstanceW")
)

// instance (JET_INSTANCE), szBackupPath (WORD*), grbit (DWORD), pfnStatus (JET_PFNSTATUS optional)
r1, _, err := procJetBackupInstanceW.Call(
	uintptr(instance),
	uintptr(szBackupPath),
	uintptr(grbit),
	uintptr(pfnStatus),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetBackupInstanceW(
  instance: NativeUInt;   // JET_INSTANCE
  szBackupPath: Pointer;   // WORD*
  grbit: DWORD;   // DWORD
  pfnStatus: Pointer   // JET_PFNSTATUS optional
): Integer; stdcall;
  external 'ESENT.dll' name 'JetBackupInstanceW';

result := DllCall("ESENT\JetBackupInstanceW"
    , "UPtr", instance   ; JET_INSTANCE
    , "Ptr", szBackupPath   ; WORD*
    , "UInt", grbit   ; DWORD
    , "Ptr", pfnStatus   ; JET_PFNSTATUS optional
    , "Int")   ; return: INT

●JetBackupInstanceW(instance, szBackupPath, grbit, pfnStatus) = DLL("ESENT.dll", "int JetBackupInstanceW(int, void*, dword, void*)")
# 呼び出し: JetBackupInstanceW(instance, szBackupPath, grbit, pfnStatus)
# instance : JET_INSTANCE -> "int"
# szBackupPath : WORD* -> "void*"
# grbit : DWORD -> "dword"
# pfnStatus : 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。

const std = @import("std");

extern "esent" fn JetBackupInstanceW(
    instance: usize, // JET_INSTANCE
    szBackupPath: [*c]u16, // WORD*
    grbit: u32, // DWORD
    pfnStatus: ?*anyopaque // JET_PFNSTATUS optional
) callconv(std.os.windows.WINAPI) i32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc JetBackupInstanceW(
    instance: uint,  # JET_INSTANCE
    szBackupPath: ptr uint16,  # WORD*
    grbit: uint32,  # DWORD
    pfnStatus: pointer  # JET_PFNSTATUS optional
): int32 {.importc: "JetBackupInstanceW", stdcall, dynlib: "ESENT.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "esent");
extern(Windows)
int JetBackupInstanceW(
    size_t instance,   // JET_INSTANCE
    ushort* szBackupPath,   // WORD*
    uint grbit,   // DWORD
    void* pfnStatus   // JET_PFNSTATUS optional
);

ccall((:JetBackupInstanceW, "ESENT.dll"), stdcall, Int32,
      (Csize_t, Ptr{UInt16}, UInt32, Ptr{Cvoid}),
      instance, szBackupPath, grbit, pfnStatus)
# instance : JET_INSTANCE -> Csize_t
# szBackupPath : WORD* -> Ptr{UInt16}
# grbit : DWORD -> UInt32
# pfnStatus : JET_PFNSTATUS optional -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
int32_t JetBackupInstanceW(
    uintptr_t instance,
    uint16_t* szBackupPath,
    uint32_t grbit,
    void* pfnStatus);
]]
local esent = ffi.load("esent")
-- esent.JetBackupInstanceW(instance, szBackupPath, grbit, pfnStatus)
-- instance : JET_INSTANCE
-- szBackupPath : WORD*
-- grbit : DWORD
-- pfnStatus : JET_PFNSTATUS optional
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('ESENT.dll');
const JetBackupInstanceW = lib.func('__stdcall', 'JetBackupInstanceW', 'int32_t', ['uintptr_t', 'uint16_t *', 'uint32_t', 'void *']);
// JetBackupInstanceW(instance, szBackupPath, grbit, pfnStatus)
// instance : JET_INSTANCE -> 'uintptr_t'
// szBackupPath : WORD* -> 'uint16_t *'
// grbit : DWORD -> 'uint32_t'
// pfnStatus : JET_PFNSTATUS optional -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
// コールバック(関数ポインタ)は koffi.proto/koffi.register で型を定義して渡す(素の void* では JS 関数を渡せない)。

const lib = Deno.dlopen("ESENT.dll", {
  JetBackupInstanceW: { parameters: ["usize", "pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.JetBackupInstanceW(instance, szBackupPath, grbit, pfnStatus)
// instance : JET_INSTANCE -> "usize"
// szBackupPath : WORD* -> "pointer"
// grbit : DWORD -> "u32"
// pfnStatus : JET_PFNSTATUS optional -> "pointer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t JetBackupInstanceW(
    size_t instance,
    uint16_t* szBackupPath,
    uint32_t grbit,
    void* pfnStatus);
C, "ESENT.dll");
// $ffi->JetBackupInstanceW(instance, szBackupPath, grbit, pfnStatus);
// instance : JET_INSTANCE
// szBackupPath : WORD*
// grbit : DWORD
// pfnStatus : JET_PFNSTATUS optional
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Esent extends StdCallLibrary {
    Esent INSTANCE = Native.load("esent", Esent.class, W32APIOptions.UNICODE_OPTIONS);
    int JetBackupInstanceW(
        long instance,   // JET_INSTANCE
        ShortByReference szBackupPath,   // WORD*
        int grbit,   // DWORD
        Callback pfnStatus   // JET_PFNSTATUS optional
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("esent")]
lib LibESENT
  fun JetBackupInstanceW = JetBackupInstanceW(
    instance : LibC::SizeT,   # JET_INSTANCE
    szBackupPath : UInt16*,   # WORD*
    grbit : UInt32,   # DWORD
    pfnStatus : Void*   # JET_PFNSTATUS optional
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef JetBackupInstanceWNative = Int32 Function(UintPtr, Pointer<Uint16>, Uint32, Pointer<Void>);
typedef JetBackupInstanceWDart = int Function(int, Pointer<Uint16>, int, Pointer<Void>);
final JetBackupInstanceW = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetBackupInstanceWNative, JetBackupInstanceWDart>('JetBackupInstanceW');
// instance : JET_INSTANCE -> UintPtr
// szBackupPath : WORD* -> Pointer<Uint16>
// grbit : DWORD -> Uint32
// pfnStatus : JET_PFNSTATUS optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function JetBackupInstanceW(
  instance: NativeUInt;   // JET_INSTANCE
  szBackupPath: Pointer;   // WORD*
  grbit: DWORD;   // DWORD
  pfnStatus: Pointer   // JET_PFNSTATUS optional
): Integer; stdcall;
  external 'ESENT.dll' name 'JetBackupInstanceW';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "JetBackupInstanceW"
  c_JetBackupInstanceW :: CUIntPtr -> Ptr Word16 -> Word32 -> Ptr () -> IO Int32
-- instance : JET_INSTANCE -> CUIntPtr
-- szBackupPath : WORD* -> Ptr Word16
-- grbit : DWORD -> Word32
-- pfnStatus : JET_PFNSTATUS optional -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let jetbackupinstancew =
  foreign "JetBackupInstanceW"
    (size_t @-> (ptr uint16_t) @-> uint32_t @-> (ptr void) @-> returning int32_t)
(* instance : JET_INSTANCE -> size_t *)
(* szBackupPath : WORD* -> (ptr uint16_t) *)
(* grbit : DWORD -> uint32_t *)
(* pfnStatus : JET_PFNSTATUS optional -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library esent (t "ESENT.dll"))
(cffi:use-foreign-library esent)

(cffi:defcfun ("JetBackupInstanceW" jet-backup-instance-w :convention :stdcall) :int32
  (instance :uint64)   ; JET_INSTANCE
  (sz-backup-path :pointer)   ; WORD*
  (grbit :uint32)   ; DWORD
  (pfn-status :pointer))   ; JET_PFNSTATUS optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $JetBackupInstanceW = Win32::API::More->new('ESENT',
    'int JetBackupInstanceW(WPARAM instance, LPVOID szBackupPath, DWORD grbit, LPVOID pfnStatus)');
# my $ret = $JetBackupInstanceW->Call($instance, $szBackupPath, $grbit, $pfnStatus);
# instance : JET_INSTANCE -> WPARAM
# szBackupPath : WORD* -> LPVOID
# grbit : DWORD -> DWORD
# pfnStatus : JET_PFNSTATUS optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# コールバック(関数ポインタ)は Perl sub を直接渡せません。Win32::API::Callback を使用してください。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。