JetOSSnapshotFreezeA

// ESENT.dll  (ANSI / -A)
#include <windows.h>

INT JetOSSnapshotFreezeA(
    JET_OSSNAPID snapId,
    DWORD* pcInstanceInfo,
    JET_INSTANCE_INFO_A** paInstanceInfo,
    DWORD grbit
);

<DllImport("ESENT.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function JetOSSnapshotFreezeA(
    snapId As UIntPtr,   ' JET_OSSNAPID
    <Out> ByRef pcInstanceInfo As UInteger,   ' DWORD* out
    paInstanceInfo As IntPtr,   ' JET_INSTANCE_INFO_A** out
    grbit As UInteger   ' DWORD
) As Integer
End Function

' snapId : JET_OSSNAPID
' pcInstanceInfo : DWORD* out
' paInstanceInfo : JET_INSTANCE_INFO_A** out
' grbit : DWORD
Declare PtrSafe Function JetOSSnapshotFreezeA Lib "esent" ( _
    ByVal snapId As LongPtr, _
    ByRef pcInstanceInfo As Long, _
    ByVal paInstanceInfo As LongPtr, _
    ByVal grbit As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

JetOSSnapshotFreezeA = ctypes.windll.esent.JetOSSnapshotFreezeA
JetOSSnapshotFreezeA.restype = ctypes.c_int
JetOSSnapshotFreezeA.argtypes = [
    ctypes.c_size_t,  # snapId : JET_OSSNAPID
    ctypes.POINTER(wintypes.DWORD),  # pcInstanceInfo : DWORD* out
    ctypes.c_void_p,  # paInstanceInfo : JET_INSTANCE_INFO_A** out
    wintypes.DWORD,  # grbit : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetOSSnapshotFreezeA = Fiddle::Function.new(
  lib['JetOSSnapshotFreezeA'],
  [
    Fiddle::TYPE_UINTPTR_T,  # snapId : JET_OSSNAPID
    Fiddle::TYPE_VOIDP,  # pcInstanceInfo : DWORD* out
    Fiddle::TYPE_VOIDP,  # paInstanceInfo : JET_INSTANCE_INFO_A** out
    -Fiddle::TYPE_INT,  # grbit : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "esent")]
extern "system" {
    fn JetOSSnapshotFreezeA(
        snapId: usize,  // JET_OSSNAPID
        pcInstanceInfo: *mut u32,  // DWORD* out
        paInstanceInfo: *mut *mut JET_INSTANCE_INFO_A,  // JET_INSTANCE_INFO_A** out
        grbit: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Ansi)]
public static extern int JetOSSnapshotFreezeA(UIntPtr snapId, out uint pcInstanceInfo, IntPtr paInstanceInfo, uint grbit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetOSSnapshotFreezeA' -Namespace Win32 -PassThru
# $api::JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)

#uselib "ESENT.dll"
#func global JetOSSnapshotFreezeA "JetOSSnapshotFreezeA" sptr, sptr, sptr, sptr
; JetOSSnapshotFreezeA snapId, varptr(pcInstanceInfo), varptr(paInstanceInfo), grbit   ; 戻り値は stat
; snapId : JET_OSSNAPID -> "sptr"
; pcInstanceInfo : DWORD* out -> "sptr"
; paInstanceInfo : JET_INSTANCE_INFO_A** out -> "sptr"
; grbit : DWORD -> "sptr"
; ※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 JetOSSnapshotFreezeA "JetOSSnapshotFreezeA" sptr, var, var, int
; res = JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
; snapId : JET_OSSNAPID -> "sptr"
; pcInstanceInfo : DWORD* out -> "var"
; paInstanceInfo : JET_INSTANCE_INFO_A** 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 JetOSSnapshotFreezeA(JET_OSSNAPID snapId, DWORD* pcInstanceInfo, JET_INSTANCE_INFO_A** paInstanceInfo, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetOSSnapshotFreezeA "JetOSSnapshotFreezeA" intptr, var, var, int
; res = JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
; snapId : JET_OSSNAPID -> "intptr"
; pcInstanceInfo : DWORD* out -> "var"
; paInstanceInfo : JET_INSTANCE_INFO_A** 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")
	procJetOSSnapshotFreezeA = esent.NewProc("JetOSSnapshotFreezeA")
)

// snapId (JET_OSSNAPID), pcInstanceInfo (DWORD* out), paInstanceInfo (JET_INSTANCE_INFO_A** out), grbit (DWORD)
r1, _, err := procJetOSSnapshotFreezeA.Call(
	uintptr(snapId),
	uintptr(pcInstanceInfo),
	uintptr(paInstanceInfo),
	uintptr(grbit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetOSSnapshotFreezeA(
  snapId: NativeUInt;   // JET_OSSNAPID
  pcInstanceInfo: Pointer;   // DWORD* out
  paInstanceInfo: Pointer;   // JET_INSTANCE_INFO_A** out
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetOSSnapshotFreezeA';

result := DllCall("ESENT\JetOSSnapshotFreezeA"
    , "UPtr", snapId   ; JET_OSSNAPID
    , "Ptr", pcInstanceInfo   ; DWORD* out
    , "Ptr", paInstanceInfo   ; JET_INSTANCE_INFO_A** out
    , "UInt", grbit   ; DWORD
    , "Int")   ; return: INT

●JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit) = DLL("ESENT.dll", "int JetOSSnapshotFreezeA(int, void*, void*, dword)")
# 呼び出し: JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
# snapId : JET_OSSNAPID -> "int"
# pcInstanceInfo : DWORD* out -> "void*"
# paInstanceInfo : JET_INSTANCE_INFO_A** 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)。