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JetIndexRecordCount
関数現在のインデックス範囲内のレコード数を数える。
シグネチャ
// ESENT.dll
#include <windows.h>
INT JetIndexRecordCount(
JET_SESID sesid,
JET_TABLEID tableid,
DWORD* pcrec,
DWORD crecMax
);パラメーター
| 名前 | 型 | 方向 | 説明 |
|---|---|---|---|
| sesid | JET_SESID | in | レコード数計数を行うセッションのJET_SESIDハンドル。 |
| tableid | JET_TABLEID | in | 計数対象のテーブルカーソルハンドル。現在のインデックス範囲内が対象となる。 |
| pcrec | DWORD* | out | 計数されたレコード数を受け取る出力ポインタ。 |
| crecMax | DWORD | in | 計数する最大レコード数。0で全件を数える上限なしとなる。 |
戻り値の型: INT
各言語での呼び出し定義
// ESENT.dll
#include <windows.h>
INT JetIndexRecordCount(
JET_SESID sesid,
JET_TABLEID tableid,
DWORD* pcrec,
DWORD crecMax
);[DllImport("ESENT.dll", ExactSpelling = true)]
static extern int JetIndexRecordCount(
UIntPtr sesid, // JET_SESID
UIntPtr tableid, // JET_TABLEID
out uint pcrec, // DWORD* out
uint crecMax // DWORD
);<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。出力引数:
#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。#uselib "ESENT.dll" #cfunc global JetIndexRecordCount "JetIndexRecordCount" sptr, sptr, sptr, int ; res = JetIndexRecordCount(sesid, tableid, varptr(pcrec), crecMax) ; sesid : JET_SESID -> "sptr" ; tableid : JET_TABLEID -> "sptr" ; pcrec : DWORD* out -> "sptr" ; crecMax : DWORD -> "int" ; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。
出力引数:
; 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。; INT JetIndexRecordCount(JET_SESID sesid, JET_TABLEID tableid, DWORD* pcrec, DWORD crecMax) #uselib "ESENT.dll" #cfunc global JetIndexRecordCount "JetIndexRecordCount" intptr, intptr, intptr, int ; res = JetIndexRecordCount(sesid, tableid, varptr(pcrec), crecMax) ; sesid : JET_SESID -> "intptr" ; tableid : JET_TABLEID -> "intptr" ; pcrec : DWORD* out -> "intptr" ; crecMax : DWORD -> "int" ; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。
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 // INTfunction 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)。const std = @import("std");
extern "esent" fn JetIndexRecordCount(
sesid: usize, // JET_SESID
tableid: usize, // JET_TABLEID
pcrec: [*c]u32, // DWORD* out
crecMax: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;proc JetIndexRecordCount(
sesid: uint, # JET_SESID
tableid: uint, # JET_TABLEID
pcrec: ptr uint32, # DWORD* out
crecMax: uint32 # DWORD
): int32 {.importc: "JetIndexRecordCount", stdcall, dynlib: "ESENT.dll".}pragma(lib, "esent");
extern(Windows)
int JetIndexRecordCount(
size_t sesid, // JET_SESID
size_t tableid, // JET_TABLEID
uint* pcrec, // DWORD* out
uint crecMax // DWORD
);ccall((:JetIndexRecordCount, "ESENT.dll"), stdcall, Int32,
(Csize_t, Csize_t, Ptr{UInt32}, UInt32),
sesid, tableid, pcrec, crecMax)
# sesid : JET_SESID -> Csize_t
# tableid : JET_TABLEID -> Csize_t
# pcrec : DWORD* out -> Ptr{UInt32}
# crecMax : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。local ffi = require("ffi")
ffi.cdef[[
int32_t JetIndexRecordCount(
uintptr_t sesid,
uintptr_t tableid,
uint32_t* pcrec,
uint32_t crecMax);
]]
local esent = ffi.load("esent")
-- esent.JetIndexRecordCount(sesid, tableid, pcrec, crecMax)
-- sesid : JET_SESID
-- tableid : JET_TABLEID
-- pcrec : DWORD* out
-- crecMax : DWORD
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。const koffi = require('koffi');
const lib = koffi.load('ESENT.dll');
const JetIndexRecordCount = lib.func('__stdcall', 'JetIndexRecordCount', 'int32_t', ['uintptr_t', 'uintptr_t', 'uint32_t *', 'uint32_t']);
// JetIndexRecordCount(sesid, tableid, pcrec, crecMax)
// sesid : JET_SESID -> 'uintptr_t'
// tableid : JET_TABLEID -> 'uintptr_t'
// pcrec : DWORD* out -> 'uint32_t *'
// crecMax : DWORD -> 'uint32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。const lib = Deno.dlopen("ESENT.dll", {
JetIndexRecordCount: { parameters: ["usize", "usize", "pointer", "u32"], result: "i32" },
});
// lib.symbols.JetIndexRecordCount(sesid, tableid, pcrec, crecMax)
// sesid : JET_SESID -> "usize"
// tableid : JET_TABLEID -> "usize"
// pcrec : DWORD* out -> "pointer"
// crecMax : DWORD -> "u32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。<?php
$ffi = FFI::cdef(<<<C
int32_t JetIndexRecordCount(
size_t sesid,
size_t tableid,
uint32_t* pcrec,
uint32_t crecMax);
C, "ESENT.dll");
// $ffi->JetIndexRecordCount(sesid, tableid, pcrec, crecMax);
// sesid : JET_SESID
// tableid : JET_TABLEID
// pcrec : DWORD* out
// crecMax : DWORD
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;
public interface Esent extends StdCallLibrary {
Esent INSTANCE = Native.load("esent", Esent.class);
int JetIndexRecordCount(
long sesid, // JET_SESID
long tableid, // JET_TABLEID
IntByReference pcrec, // DWORD* out
int crecMax // DWORD
);
}@[Link("esent")]
lib LibESENT
fun JetIndexRecordCount = JetIndexRecordCount(
sesid : LibC::SizeT, # JET_SESID
tableid : LibC::SizeT, # JET_TABLEID
pcrec : UInt32*, # DWORD* out
crecMax : UInt32 # DWORD
) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。import 'dart:ffi';
import 'package:ffi/ffi.dart';
typedef JetIndexRecordCountNative = Int32 Function(UintPtr, UintPtr, Pointer<Uint32>, Uint32);
typedef JetIndexRecordCountDart = int Function(int, int, Pointer<Uint32>, int);
final JetIndexRecordCount = DynamicLibrary.open('ESENT.dll')
.lookupFunction<JetIndexRecordCountNative, JetIndexRecordCountDart>('JetIndexRecordCount');
// sesid : JET_SESID -> UintPtr
// tableid : JET_TABLEID -> UintPtr
// pcrec : DWORD* out -> Pointer<Uint32>
// crecMax : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。{$mode objfpc}{$H+}
function JetIndexRecordCount(
sesid: NativeUInt; // JET_SESID
tableid: NativeUInt; // JET_TABLEID
pcrec: Pointer; // DWORD* out
crecMax: DWORD // DWORD
): Integer; stdcall;
external 'ESENT.dll' name 'JetIndexRecordCount';import Foreign
import Foreign.C.Types
import Foreign.C.String
foreign import stdcall safe "JetIndexRecordCount"
c_JetIndexRecordCount :: CUIntPtr -> CUIntPtr -> Ptr Word32 -> Word32 -> IO Int32
-- sesid : JET_SESID -> CUIntPtr
-- tableid : JET_TABLEID -> CUIntPtr
-- pcrec : DWORD* out -> Ptr Word32
-- crecMax : DWORD -> Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。open Ctypes
open Foreign
let jetindexrecordcount =
foreign "JetIndexRecordCount"
(size_t @-> size_t @-> (ptr uint32_t) @-> uint32_t @-> returning int32_t)
(* sesid : JET_SESID -> size_t *)
(* tableid : JET_TABLEID -> size_t *)
(* pcrec : DWORD* out -> (ptr uint32_t) *)
(* crecMax : DWORD -> uint32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)(cffi:define-foreign-library esent (t "ESENT.dll"))
(cffi:use-foreign-library esent)
(cffi:defcfun ("JetIndexRecordCount" jet-index-record-count :convention :stdcall) :int32
(sesid :uint64) ; JET_SESID
(tableid :uint64) ; JET_TABLEID
(pcrec :pointer) ; DWORD* out
(crec-max :uint32)) ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。use Win32::API;
my $JetIndexRecordCount = Win32::API::More->new('ESENT',
'int JetIndexRecordCount(WPARAM sesid, WPARAM tableid, LPVOID pcrec, DWORD crecMax)');
# my $ret = $JetIndexRecordCount->Call($sesid, $tableid, $pcrec, $crecMax);
# sesid : JET_SESID -> WPARAM
# tableid : JET_TABLEID -> WPARAM
# pcrec : DWORD* out -> LPVOID
# crecMax : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。