JetIndexRecordCount

// ESENT.dll
#include <windows.h>

INT JetIndexRecordCount(
    JET_SESID sesid,
    JET_TABLEID tableid,
    DWORD* pcrec,
    DWORD crecMax
);

<DllImport("ESENT.dll", ExactSpelling:=True)>
Public Shared Function JetIndexRecordCount(
    sesid As UIntPtr,   ' JET_SESID
    tableid As UIntPtr,   ' JET_TABLEID
    <Out> ByRef pcrec As UInteger,   ' DWORD* out
    crecMax As UInteger   ' DWORD
) As Integer
End Function

' sesid : JET_SESID
' tableid : JET_TABLEID
' pcrec : DWORD* out
' crecMax : DWORD
Declare PtrSafe Function JetIndexRecordCount Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByVal tableid As LongPtr, _
    ByRef pcrec As Long, _
    ByVal crecMax 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

JetIndexRecordCount = ctypes.windll.esent.JetIndexRecordCount
JetIndexRecordCount.restype = ctypes.c_int
JetIndexRecordCount.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.c_size_t,  # tableid : JET_TABLEID
    ctypes.POINTER(wintypes.DWORD),  # pcrec : DWORD* out
    wintypes.DWORD,  # crecMax : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetIndexRecordCount = Fiddle::Function.new(
  lib['JetIndexRecordCount'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_UINTPTR_T,  # tableid : JET_TABLEID
    Fiddle::TYPE_VOIDP,  # pcrec : DWORD* out
    -Fiddle::TYPE_INT,  # crecMax : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "esent")]
extern "system" {
    fn JetIndexRecordCount(
        sesid: usize,  // JET_SESID
        tableid: usize,  // JET_TABLEID
        pcrec: *mut u32,  // DWORD* out
        crecMax: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll")]
public static extern int JetIndexRecordCount(UIntPtr sesid, UIntPtr tableid, out uint pcrec, uint crecMax);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetIndexRecordCount' -Namespace Win32 -PassThru
# $api::JetIndexRecordCount(sesid, tableid, pcrec, crecMax)

#uselib "ESENT.dll"
#func global JetIndexRecordCount "JetIndexRecordCount" sptr, sptr, sptr, sptr
; JetIndexRecordCount sesid, tableid, varptr(pcrec), crecMax   ; 戻り値は stat
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; pcrec : DWORD* out -> "sptr"
; crecMax : 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 JetIndexRecordCount "JetIndexRecordCount" sptr, sptr, var, int
; res = JetIndexRecordCount(sesid, tableid, pcrec, crecMax)
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; pcrec : DWORD* out -> "var"
; crecMax : 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 JetIndexRecordCount(JET_SESID sesid, JET_TABLEID tableid, DWORD* pcrec, DWORD crecMax)
#uselib "ESENT.dll"
#cfunc global JetIndexRecordCount "JetIndexRecordCount" intptr, intptr, var, int
; res = JetIndexRecordCount(sesid, tableid, pcrec, crecMax)
; sesid : JET_SESID -> "intptr"
; tableid : JET_TABLEID -> "intptr"
; pcrec : DWORD* out -> "var"
; crecMax : 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")
	procJetIndexRecordCount = esent.NewProc("JetIndexRecordCount")
)

// sesid (JET_SESID), tableid (JET_TABLEID), pcrec (DWORD* out), crecMax (DWORD)
r1, _, err := procJetIndexRecordCount.Call(
	uintptr(sesid),
	uintptr(tableid),
	uintptr(pcrec),
	uintptr(crecMax),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetIndexRecordCount(
  sesid: NativeUInt;   // JET_SESID
  tableid: NativeUInt;   // JET_TABLEID
  pcrec: Pointer;   // DWORD* out
  crecMax: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetIndexRecordCount';

result := DllCall("ESENT\JetIndexRecordCount"
    , "UPtr", sesid   ; JET_SESID
    , "UPtr", tableid   ; JET_TABLEID
    , "Ptr", pcrec   ; DWORD* out
    , "UInt", crecMax   ; DWORD
    , "Int")   ; return: INT

●JetIndexRecordCount(sesid, tableid, pcrec, crecMax) = DLL("ESENT.dll", "int JetIndexRecordCount(int, int, void*, dword)")
# 呼び出し: JetIndexRecordCount(sesid, tableid, pcrec, crecMax)
# sesid : JET_SESID -> "int"
# tableid : JET_TABLEID -> "int"
# pcrec : DWORD* out -> "void*"
# crecMax : 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)。