JetSetSystemParameterW

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

INT JetSetSystemParameterW(
    JET_INSTANCE* pinstance,   // optional
    JET_SESID sesid,   // optional
    DWORD paramid,
    JET_API_PTR lParam,   // optional
    WORD* szParam   // optional
);

<DllImport("ESENT.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function JetSetSystemParameterW(
    pinstance As IntPtr,   ' JET_INSTANCE* optional, in/out
    sesid As UIntPtr,   ' JET_SESID optional
    paramid As UInteger,   ' DWORD
    lParam As UIntPtr,   ' JET_API_PTR optional
    szParam As IntPtr   ' WORD* optional
) As Integer
End Function

' pinstance : JET_INSTANCE* optional, in/out
' sesid : JET_SESID optional
' paramid : DWORD
' lParam : JET_API_PTR optional
' szParam : WORD* optional
Declare PtrSafe Function JetSetSystemParameterW Lib "esent" ( _
    ByVal pinstance As LongPtr, _
    ByVal sesid As LongPtr, _
    ByVal paramid As Long, _
    ByVal lParam As LongPtr, _
    ByVal szParam 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

JetSetSystemParameterW = ctypes.windll.esent.JetSetSystemParameterW
JetSetSystemParameterW.restype = ctypes.c_int
JetSetSystemParameterW.argtypes = [
    ctypes.c_void_p,  # pinstance : JET_INSTANCE* optional, in/out
    ctypes.c_size_t,  # sesid : JET_SESID optional
    wintypes.DWORD,  # paramid : DWORD
    ctypes.c_size_t,  # lParam : JET_API_PTR optional
    ctypes.POINTER(ctypes.c_ushort),  # szParam : WORD* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetSetSystemParameterW = Fiddle::Function.new(
  lib['JetSetSystemParameterW'],
  [
    Fiddle::TYPE_VOIDP,  # pinstance : JET_INSTANCE* optional, in/out
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID optional
    -Fiddle::TYPE_INT,  # paramid : DWORD
    Fiddle::TYPE_UINTPTR_T,  # lParam : JET_API_PTR optional
    Fiddle::TYPE_VOIDP,  # szParam : WORD* optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "esent")]
extern "system" {
    fn JetSetSystemParameterW(
        pinstance: *mut usize,  // JET_INSTANCE* optional, in/out
        sesid: usize,  // JET_SESID optional
        paramid: u32,  // DWORD
        lParam: usize,  // JET_API_PTR optional
        szParam: *mut u16  // WORD* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Unicode)]
public static extern int JetSetSystemParameterW(IntPtr pinstance, UIntPtr sesid, uint paramid, UIntPtr lParam, IntPtr szParam);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetSetSystemParameterW' -Namespace Win32 -PassThru
# $api::JetSetSystemParameterW(pinstance, sesid, paramid, lParam, szParam)

#uselib "ESENT.dll"
#func global JetSetSystemParameterW "JetSetSystemParameterW" wptr, wptr, wptr, wptr, wptr
; JetSetSystemParameterW pinstance, sesid, paramid, lParam, varptr(szParam)   ; 戻り値は stat
; pinstance : JET_INSTANCE* optional, in/out -> "wptr"
; sesid : JET_SESID optional -> "wptr"
; paramid : DWORD -> "wptr"
; lParam : JET_API_PTR optional -> "wptr"
; szParam : WORD* 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 JetSetSystemParameterW "JetSetSystemParameterW" int, sptr, int, sptr, var
; res = JetSetSystemParameterW(pinstance, sesid, paramid, lParam, szParam)
; pinstance : JET_INSTANCE* optional, in/out -> "int"
; sesid : JET_SESID optional -> "sptr"
; paramid : DWORD -> "int"
; lParam : JET_API_PTR optional -> "sptr"
; szParam : WORD* optional -> "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。

; INT JetSetSystemParameterW(JET_INSTANCE* pinstance, JET_SESID sesid, DWORD paramid, JET_API_PTR lParam, WORD* szParam)
#uselib "ESENT.dll"
#cfunc global JetSetSystemParameterW "JetSetSystemParameterW" int, intptr, int, intptr, var
; res = JetSetSystemParameterW(pinstance, sesid, paramid, lParam, szParam)
; pinstance : JET_INSTANCE* optional, in/out -> "int"
; sesid : JET_SESID optional -> "intptr"
; paramid : DWORD -> "int"
; lParam : JET_API_PTR optional -> "intptr"
; szParam : WORD* optional -> "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 (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetSetSystemParameterW = esent.NewProc("JetSetSystemParameterW")
)

// pinstance (JET_INSTANCE* optional, in/out), sesid (JET_SESID optional), paramid (DWORD), lParam (JET_API_PTR optional), szParam (WORD* optional)
r1, _, err := procJetSetSystemParameterW.Call(
	uintptr(pinstance),
	uintptr(sesid),
	uintptr(paramid),
	uintptr(lParam),
	uintptr(szParam),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetSetSystemParameterW(
  pinstance: Pointer;   // JET_INSTANCE* optional, in/out
  sesid: NativeUInt;   // JET_SESID optional
  paramid: DWORD;   // DWORD
  lParam: NativeUInt;   // JET_API_PTR optional
  szParam: Pointer   // WORD* optional
): Integer; stdcall;
  external 'ESENT.dll' name 'JetSetSystemParameterW';

result := DllCall("ESENT\JetSetSystemParameterW"
    , "Ptr", pinstance   ; JET_INSTANCE* optional, in/out
    , "UPtr", sesid   ; JET_SESID optional
    , "UInt", paramid   ; DWORD
    , "UPtr", lParam   ; JET_API_PTR optional
    , "Ptr", szParam   ; WORD* optional
    , "Int")   ; return: INT

●JetSetSystemParameterW(pinstance, sesid, paramid, lParam, szParam) = DLL("ESENT.dll", "int JetSetSystemParameterW(void*, int, dword, int, void*)")
# 呼び出し: JetSetSystemParameterW(pinstance, sesid, paramid, lParam, szParam)
# pinstance : JET_INSTANCE* optional, in/out -> "void*"
# sesid : JET_SESID optional -> "int"
# paramid : DWORD -> "dword"
# lParam : JET_API_PTR optional -> "int"
# szParam : WORD* 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。