JetOpenDatabaseW

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

INT JetOpenDatabaseW(
    JET_SESID sesid,
    WORD* szFilename,
    WORD* szConnect,   // optional
    DWORD* pdbid,
    DWORD grbit
);

<DllImport("ESENT.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function JetOpenDatabaseW(
    sesid As UIntPtr,   ' JET_SESID
    ByRef szFilename As UShort,   ' WORD*
    szConnect As IntPtr,   ' WORD* optional
    <Out> ByRef pdbid As UInteger,   ' DWORD* out
    grbit As UInteger   ' DWORD
) As Integer
End Function

' sesid : JET_SESID
' szFilename : WORD*
' szConnect : WORD* optional
' pdbid : DWORD* out
' grbit : DWORD
Declare PtrSafe Function JetOpenDatabaseW Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByRef szFilename As Integer, _
    ByVal szConnect As LongPtr, _
    ByRef pdbid As Long, _
    ByVal grbit As Long) 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

JetOpenDatabaseW = ctypes.windll.esent.JetOpenDatabaseW
JetOpenDatabaseW.restype = ctypes.c_int
JetOpenDatabaseW.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.POINTER(ctypes.c_ushort),  # szFilename : WORD*
    ctypes.POINTER(ctypes.c_ushort),  # szConnect : WORD* optional
    ctypes.POINTER(wintypes.DWORD),  # pdbid : DWORD* out
    wintypes.DWORD,  # grbit : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetOpenDatabaseW = Fiddle::Function.new(
  lib['JetOpenDatabaseW'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_VOIDP,  # szFilename : WORD*
    Fiddle::TYPE_VOIDP,  # szConnect : WORD* optional
    Fiddle::TYPE_VOIDP,  # pdbid : DWORD* out
    -Fiddle::TYPE_INT,  # grbit : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "esent")]
extern "system" {
    fn JetOpenDatabaseW(
        sesid: usize,  // JET_SESID
        szFilename: *mut u16,  // WORD*
        szConnect: *mut u16,  // WORD* optional
        pdbid: *mut u32,  // DWORD* out
        grbit: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Unicode)]
public static extern int JetOpenDatabaseW(UIntPtr sesid, ref ushort szFilename, IntPtr szConnect, out uint pdbid, uint grbit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetOpenDatabaseW' -Namespace Win32 -PassThru
# $api::JetOpenDatabaseW(sesid, szFilename, szConnect, pdbid, grbit)

#uselib "ESENT.dll"
#func global JetOpenDatabaseW "JetOpenDatabaseW" wptr, wptr, wptr, wptr, wptr
; JetOpenDatabaseW sesid, varptr(szFilename), varptr(szConnect), varptr(pdbid), grbit   ; 戻り値は stat
; sesid : JET_SESID -> "wptr"
; szFilename : WORD* -> "wptr"
; szConnect : WORD* optional -> "wptr"
; pdbid : DWORD* out -> "wptr"
; grbit : DWORD -> "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 JetOpenDatabaseW "JetOpenDatabaseW" sptr, var, var, var, int
; res = JetOpenDatabaseW(sesid, szFilename, szConnect, pdbid, grbit)
; sesid : JET_SESID -> "sptr"
; szFilename : WORD* -> "var"
; szConnect : WORD* optional -> "var"
; pdbid : DWORD* out -> "var"
; grbit : DWORD -> "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。

; INT JetOpenDatabaseW(JET_SESID sesid, WORD* szFilename, WORD* szConnect, DWORD* pdbid, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetOpenDatabaseW "JetOpenDatabaseW" intptr, var, var, var, int
; res = JetOpenDatabaseW(sesid, szFilename, szConnect, pdbid, grbit)
; sesid : JET_SESID -> "intptr"
; szFilename : WORD* -> "var"
; szConnect : WORD* optional -> "var"
; pdbid : DWORD* out -> "var"
; grbit : DWORD -> "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 (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetOpenDatabaseW = esent.NewProc("JetOpenDatabaseW")
)

// sesid (JET_SESID), szFilename (WORD*), szConnect (WORD* optional), pdbid (DWORD* out), grbit (DWORD)
r1, _, err := procJetOpenDatabaseW.Call(
	uintptr(sesid),
	uintptr(szFilename),
	uintptr(szConnect),
	uintptr(pdbid),
	uintptr(grbit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetOpenDatabaseW(
  sesid: NativeUInt;   // JET_SESID
  szFilename: Pointer;   // WORD*
  szConnect: Pointer;   // WORD* optional
  pdbid: Pointer;   // DWORD* out
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetOpenDatabaseW';

result := DllCall("ESENT\JetOpenDatabaseW"
    , "UPtr", sesid   ; JET_SESID
    , "Ptr", szFilename   ; WORD*
    , "Ptr", szConnect   ; WORD* optional
    , "Ptr", pdbid   ; DWORD* out
    , "UInt", grbit   ; DWORD
    , "Int")   ; return: INT

●JetOpenDatabaseW(sesid, szFilename, szConnect, pdbid, grbit) = DLL("ESENT.dll", "int JetOpenDatabaseW(int, void*, void*, void*, dword)")
# 呼び出し: JetOpenDatabaseW(sesid, szFilename, szConnect, pdbid, grbit)
# sesid : JET_SESID -> "int"
# szFilename : WORD* -> "void*"
# szConnect : WORD* optional -> "void*"
# pdbid : DWORD* out -> "void*"
# grbit : DWORD -> "dword"
# 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。