JetRetrieveColumn

関数

現在のレコードから指定した列の値を取得する。

DLLESENT.dll呼出規約winapi

シグネチャ

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

INT JetRetrieveColumn(
    JET_SESID sesid,
    JET_TABLEID tableid,
    DWORD columnid,
    void* pvData,   // optional
    DWORD cbData,
    DWORD* pcbActual,   // optional
    DWORD grbit,
    JET_RETINFO* pretinfo   // optional
);

パラメーター

名前	型	方向
sesid	JET_SESID	in
tableid	JET_TABLEID	in
columnid	DWORD	in
pvData	void*	outoptional
cbData	DWORD	in
pcbActual	DWORD*	outoptional
grbit	DWORD	in
pretinfo	JET_RETINFO*	inoutoptional

戻り値の型: INT

各言語での呼び出し定義

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

INT JetRetrieveColumn(
    JET_SESID sesid,
    JET_TABLEID tableid,
    DWORD columnid,
    void* pvData,   // optional
    DWORD cbData,
    DWORD* pcbActual,   // optional
    DWORD grbit,
    JET_RETINFO* pretinfo   // optional
);

[DllImport("ESENT.dll", ExactSpelling = true)]
static extern int JetRetrieveColumn(
    UIntPtr sesid,   // JET_SESID
    UIntPtr tableid,   // JET_TABLEID
    uint columnid,   // DWORD
    IntPtr pvData,   // void* optional, out
    uint cbData,   // DWORD
    IntPtr pcbActual,   // DWORD* optional, out
    uint grbit,   // DWORD
    IntPtr pretinfo   // JET_RETINFO* optional, in/out
);

<DllImport("ESENT.dll", ExactSpelling:=True)>
Public Shared Function JetRetrieveColumn(
    sesid As UIntPtr,   ' JET_SESID
    tableid As UIntPtr,   ' JET_TABLEID
    columnid As UInteger,   ' DWORD
    pvData As IntPtr,   ' void* optional, out
    cbData As UInteger,   ' DWORD
    pcbActual As IntPtr,   ' DWORD* optional, out
    grbit As UInteger,   ' DWORD
    pretinfo As IntPtr   ' JET_RETINFO* optional, in/out
) As Integer
End Function

' sesid : JET_SESID
' tableid : JET_TABLEID
' columnid : DWORD
' pvData : void* optional, out
' cbData : DWORD
' pcbActual : DWORD* optional, out
' grbit : DWORD
' pretinfo : JET_RETINFO* optional, in/out
Declare PtrSafe Function JetRetrieveColumn Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByVal tableid As LongPtr, _
    ByVal columnid As Long, _
    ByVal pvData As LongPtr, _
    ByVal cbData As Long, _
    ByVal pcbActual As LongPtr, _
    ByVal grbit As Long, _
    ByVal pretinfo As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

JetRetrieveColumn = ctypes.windll.esent.JetRetrieveColumn
JetRetrieveColumn.restype = ctypes.c_int
JetRetrieveColumn.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.c_size_t,  # tableid : JET_TABLEID
    wintypes.DWORD,  # columnid : DWORD
    ctypes.POINTER(None),  # pvData : void* optional, out
    wintypes.DWORD,  # cbData : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcbActual : DWORD* optional, out
    wintypes.DWORD,  # grbit : DWORD
    ctypes.c_void_p,  # pretinfo : JET_RETINFO* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetRetrieveColumn = Fiddle::Function.new(
  lib['JetRetrieveColumn'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_UINTPTR_T,  # tableid : JET_TABLEID
    -Fiddle::TYPE_INT,  # columnid : DWORD
    Fiddle::TYPE_VOIDP,  # pvData : void* optional, out
    -Fiddle::TYPE_INT,  # cbData : DWORD
    Fiddle::TYPE_VOIDP,  # pcbActual : DWORD* optional, out
    -Fiddle::TYPE_INT,  # grbit : DWORD
    Fiddle::TYPE_VOIDP,  # pretinfo : JET_RETINFO* optional, in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "esent")]
extern "system" {
    fn JetRetrieveColumn(
        sesid: usize,  // JET_SESID
        tableid: usize,  // JET_TABLEID
        columnid: u32,  // DWORD
        pvData: *mut (),  // void* optional, out
        cbData: u32,  // DWORD
        pcbActual: *mut u32,  // DWORD* optional, out
        grbit: u32,  // DWORD
        pretinfo: *mut JET_RETINFO  // JET_RETINFO* optional, in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll")]
public static extern int JetRetrieveColumn(UIntPtr sesid, UIntPtr tableid, uint columnid, IntPtr pvData, uint cbData, IntPtr pcbActual, uint grbit, IntPtr pretinfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetRetrieveColumn' -Namespace Win32 -PassThru
# $api::JetRetrieveColumn(sesid, tableid, columnid, pvData, cbData, pcbActual, grbit, pretinfo)

#uselib "ESENT.dll"
#func global JetRetrieveColumn "JetRetrieveColumn" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; JetRetrieveColumn sesid, tableid, columnid, pvData, cbData, varptr(pcbActual), grbit, varptr(pretinfo)   ; 戻り値は stat
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; columnid : DWORD -> "sptr"
; pvData : void* optional, out -> "sptr"
; cbData : DWORD -> "sptr"
; pcbActual : DWORD* optional, out -> "sptr"
; grbit : DWORD -> "sptr"
; pretinfo : JET_RETINFO* optional, in/out -> "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 JetRetrieveColumn "JetRetrieveColumn" sptr, sptr, int, sptr, int, var, int, var
; res = JetRetrieveColumn(sesid, tableid, columnid, pvData, cbData, pcbActual, grbit, pretinfo)
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; columnid : DWORD -> "int"
; pvData : void* optional, out -> "sptr"
; cbData : DWORD -> "int"
; pcbActual : DWORD* optional, out -> "var"
; grbit : DWORD -> "int"
; pretinfo : JET_RETINFO* optional, in/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。#uselib "ESENT.dll"
#cfunc global JetRetrieveColumn "JetRetrieveColumn" sptr, sptr, int, sptr, int, sptr, int, sptr
; res = JetRetrieveColumn(sesid, tableid, columnid, pvData, cbData, varptr(pcbActual), grbit, varptr(pretinfo))
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; columnid : DWORD -> "int"
; pvData : void* optional, out -> "sptr"
; cbData : DWORD -> "int"
; pcbActual : DWORD* optional, out -> "sptr"
; grbit : DWORD -> "int"
; pretinfo : JET_RETINFO* optional, in/out -> "sptr"
; ※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 JetRetrieveColumn(JET_SESID sesid, JET_TABLEID tableid, DWORD columnid, void* pvData, DWORD cbData, DWORD* pcbActual, DWORD grbit, JET_RETINFO* pretinfo)
#uselib "ESENT.dll"
#cfunc global JetRetrieveColumn "JetRetrieveColumn" intptr, intptr, int, intptr, int, var, int, var
; res = JetRetrieveColumn(sesid, tableid, columnid, pvData, cbData, pcbActual, grbit, pretinfo)
; sesid : JET_SESID -> "intptr"
; tableid : JET_TABLEID -> "intptr"
; columnid : DWORD -> "int"
; pvData : void* optional, out -> "intptr"
; cbData : DWORD -> "int"
; pcbActual : DWORD* optional, out -> "var"
; grbit : DWORD -> "int"
; pretinfo : JET_RETINFO* optional, in/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 JetRetrieveColumn(JET_SESID sesid, JET_TABLEID tableid, DWORD columnid, void* pvData, DWORD cbData, DWORD* pcbActual, DWORD grbit, JET_RETINFO* pretinfo)
#uselib "ESENT.dll"
#cfunc global JetRetrieveColumn "JetRetrieveColumn" intptr, intptr, int, intptr, int, intptr, int, intptr
; res = JetRetrieveColumn(sesid, tableid, columnid, pvData, cbData, varptr(pcbActual), grbit, varptr(pretinfo))
; sesid : JET_SESID -> "intptr"
; tableid : JET_TABLEID -> "intptr"
; columnid : DWORD -> "int"
; pvData : void* optional, out -> "intptr"
; cbData : DWORD -> "int"
; pcbActual : DWORD* optional, out -> "intptr"
; grbit : DWORD -> "int"
; pretinfo : JET_RETINFO* optional, in/out -> "intptr"
; ※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")
	procJetRetrieveColumn = esent.NewProc("JetRetrieveColumn")
)

// sesid (JET_SESID), tableid (JET_TABLEID), columnid (DWORD), pvData (void* optional, out), cbData (DWORD), pcbActual (DWORD* optional, out), grbit (DWORD), pretinfo (JET_RETINFO* optional, in/out)
r1, _, err := procJetRetrieveColumn.Call(
	uintptr(sesid),
	uintptr(tableid),
	uintptr(columnid),
	uintptr(pvData),
	uintptr(cbData),
	uintptr(pcbActual),
	uintptr(grbit),
	uintptr(pretinfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetRetrieveColumn(
  sesid: NativeUInt;   // JET_SESID
  tableid: NativeUInt;   // JET_TABLEID
  columnid: DWORD;   // DWORD
  pvData: Pointer;   // void* optional, out
  cbData: DWORD;   // DWORD
  pcbActual: Pointer;   // DWORD* optional, out
  grbit: DWORD;   // DWORD
  pretinfo: Pointer   // JET_RETINFO* optional, in/out
): Integer; stdcall;
  external 'ESENT.dll' name 'JetRetrieveColumn';

result := DllCall("ESENT\JetRetrieveColumn"
    , "UPtr", sesid   ; JET_SESID
    , "UPtr", tableid   ; JET_TABLEID
    , "UInt", columnid   ; DWORD
    , "Ptr", pvData   ; void* optional, out
    , "UInt", cbData   ; DWORD
    , "Ptr", pcbActual   ; DWORD* optional, out
    , "UInt", grbit   ; DWORD
    , "Ptr", pretinfo   ; JET_RETINFO* optional, in/out
    , "Int")   ; return: INT

●JetRetrieveColumn(sesid, tableid, columnid, pvData, cbData, pcbActual, grbit, pretinfo) = DLL("ESENT.dll", "int JetRetrieveColumn(int, int, dword, void*, dword, void*, dword, void*)")
# 呼び出し: JetRetrieveColumn(sesid, tableid, columnid, pvData, cbData, pcbActual, grbit, pretinfo)
# sesid : JET_SESID -> "int"
# tableid : JET_TABLEID -> "int"
# columnid : DWORD -> "dword"
# pvData : void* optional, out -> "void*"
# cbData : DWORD -> "dword"
# pcbActual : DWORD* optional, out -> "void*"
# grbit : DWORD -> "dword"
# pretinfo : JET_RETINFO* optional, in/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)。