JetSetDatabaseSizeW

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

INT JetSetDatabaseSizeW(
    JET_SESID sesid,
    WORD* szDatabaseName,
    DWORD cpg,
    DWORD* pcpgReal
);

<DllImport("ESENT.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function JetSetDatabaseSizeW(
    sesid As UIntPtr,   ' JET_SESID
    ByRef szDatabaseName As UShort,   ' WORD*
    cpg As UInteger,   ' DWORD
    <Out> ByRef pcpgReal As UInteger   ' DWORD* out
) As Integer
End Function

' sesid : JET_SESID
' szDatabaseName : WORD*
' cpg : DWORD
' pcpgReal : DWORD* out
Declare PtrSafe Function JetSetDatabaseSizeW Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByRef szDatabaseName As Integer, _
    ByVal cpg As Long, _
    ByRef pcpgReal 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

JetSetDatabaseSizeW = ctypes.windll.esent.JetSetDatabaseSizeW
JetSetDatabaseSizeW.restype = ctypes.c_int
JetSetDatabaseSizeW.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.POINTER(ctypes.c_ushort),  # szDatabaseName : WORD*
    wintypes.DWORD,  # cpg : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcpgReal : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetSetDatabaseSizeW = Fiddle::Function.new(
  lib['JetSetDatabaseSizeW'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_VOIDP,  # szDatabaseName : WORD*
    -Fiddle::TYPE_INT,  # cpg : DWORD
    Fiddle::TYPE_VOIDP,  # pcpgReal : DWORD* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

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

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Unicode)]
public static extern int JetSetDatabaseSizeW(UIntPtr sesid, ref ushort szDatabaseName, uint cpg, out uint pcpgReal);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetSetDatabaseSizeW' -Namespace Win32 -PassThru
# $api::JetSetDatabaseSizeW(sesid, szDatabaseName, cpg, pcpgReal)

#uselib "ESENT.dll"
#func global JetSetDatabaseSizeW "JetSetDatabaseSizeW" wptr, wptr, wptr, wptr
; JetSetDatabaseSizeW sesid, varptr(szDatabaseName), cpg, varptr(pcpgReal)   ; 戻り値は stat
; sesid : JET_SESID -> "wptr"
; szDatabaseName : WORD* -> "wptr"
; cpg : DWORD -> "wptr"
; pcpgReal : DWORD* out -> "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 JetSetDatabaseSizeW "JetSetDatabaseSizeW" sptr, var, int, var
; res = JetSetDatabaseSizeW(sesid, szDatabaseName, cpg, pcpgReal)
; sesid : JET_SESID -> "sptr"
; szDatabaseName : WORD* -> "var"
; cpg : DWORD -> "int"
; pcpgReal : DWORD* 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。

; INT JetSetDatabaseSizeW(JET_SESID sesid, WORD* szDatabaseName, DWORD cpg, DWORD* pcpgReal)
#uselib "ESENT.dll"
#cfunc global JetSetDatabaseSizeW "JetSetDatabaseSizeW" intptr, var, int, var
; res = JetSetDatabaseSizeW(sesid, szDatabaseName, cpg, pcpgReal)
; sesid : JET_SESID -> "intptr"
; szDatabaseName : WORD* -> "var"
; cpg : DWORD -> "int"
; pcpgReal : DWORD* 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 (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetSetDatabaseSizeW = esent.NewProc("JetSetDatabaseSizeW")
)

// sesid (JET_SESID), szDatabaseName (WORD*), cpg (DWORD), pcpgReal (DWORD* out)
r1, _, err := procJetSetDatabaseSizeW.Call(
	uintptr(sesid),
	uintptr(szDatabaseName),
	uintptr(cpg),
	uintptr(pcpgReal),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetSetDatabaseSizeW(
  sesid: NativeUInt;   // JET_SESID
  szDatabaseName: Pointer;   // WORD*
  cpg: DWORD;   // DWORD
  pcpgReal: Pointer   // DWORD* out
): Integer; stdcall;
  external 'ESENT.dll' name 'JetSetDatabaseSizeW';

result := DllCall("ESENT\JetSetDatabaseSizeW"
    , "UPtr", sesid   ; JET_SESID
    , "Ptr", szDatabaseName   ; WORD*
    , "UInt", cpg   ; DWORD
    , "Ptr", pcpgReal   ; DWORD* out
    , "Int")   ; return: INT

●JetSetDatabaseSizeW(sesid, szDatabaseName, cpg, pcpgReal) = DLL("ESENT.dll", "int JetSetDatabaseSizeW(int, void*, dword, void*)")
# 呼び出し: JetSetDatabaseSizeW(sesid, szDatabaseName, cpg, pcpgReal)
# sesid : JET_SESID -> "int"
# szDatabaseName : WORD* -> "void*"
# cpg : DWORD -> "dword"
# pcpgReal : DWORD* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。