SQLColAttributeW

関数

結果セット列の指定フィールド属性を取得する(Unicode)。

DLLODBC32.dll文字セットUnicode (-W)呼出規約winapi

シグネチャ

// ODBC32.dll  (Unicode / -W)
#include <windows.h>

SHORT SQLColAttributeW(
    void* hstmt,
    WORD iCol,
    WORD iField,
    void* pCharAttr,   // optional
    SHORT cbDescMax,
    SHORT* pcbCharAttr,   // optional
    void* pNumAttr   // optional
);

パラメーター

名前	型	方向
hstmt	void*	inout
iCol	WORD	in
iField	WORD	in
pCharAttr	void*	outoptional
cbDescMax	SHORT	in
pcbCharAttr	SHORT*	outoptional
pNumAttr	void*	outoptional

戻り値の型: SHORT

各言語での呼び出し定義

// ODBC32.dll  (Unicode / -W)
#include <windows.h>

SHORT SQLColAttributeW(
    void* hstmt,
    WORD iCol,
    WORD iField,
    void* pCharAttr,   // optional
    SHORT cbDescMax,
    SHORT* pcbCharAttr,   // optional
    void* pNumAttr   // optional
);

[DllImport("ODBC32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern short SQLColAttributeW(
    IntPtr hstmt,   // void* in/out
    ushort iCol,   // WORD
    ushort iField,   // WORD
    IntPtr pCharAttr,   // void* optional, out
    short cbDescMax,   // SHORT
    IntPtr pcbCharAttr,   // SHORT* optional, out
    IntPtr pNumAttr   // void* optional, out
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SQLColAttributeW(
    hstmt As IntPtr,   ' void* in/out
    iCol As UShort,   ' WORD
    iField As UShort,   ' WORD
    pCharAttr As IntPtr,   ' void* optional, out
    cbDescMax As Short,   ' SHORT
    pcbCharAttr As IntPtr,   ' SHORT* optional, out
    pNumAttr As IntPtr   ' void* optional, out
) As Short
End Function

' hstmt : void* in/out
' iCol : WORD
' iField : WORD
' pCharAttr : void* optional, out
' cbDescMax : SHORT
' pcbCharAttr : SHORT* optional, out
' pNumAttr : void* optional, out
Declare PtrSafe Function SQLColAttributeW Lib "odbc32" ( _
    ByVal hstmt As LongPtr, _
    ByVal iCol As Integer, _
    ByVal iField As Integer, _
    ByVal pCharAttr As LongPtr, _
    ByVal cbDescMax As Integer, _
    ByVal pcbCharAttr As LongPtr, _
    ByVal pNumAttr As LongPtr) As Integer
' 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

SQLColAttributeW = ctypes.windll.odbc32.SQLColAttributeW
SQLColAttributeW.restype = ctypes.c_short
SQLColAttributeW.argtypes = [
    ctypes.POINTER(None),  # hstmt : void* in/out
    ctypes.c_ushort,  # iCol : WORD
    ctypes.c_ushort,  # iField : WORD
    ctypes.POINTER(None),  # pCharAttr : void* optional, out
    ctypes.c_short,  # cbDescMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcbCharAttr : SHORT* optional, out
    ctypes.POINTER(None),  # pNumAttr : void* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLColAttributeW = Fiddle::Function.new(
  lib['SQLColAttributeW'],
  [
    Fiddle::TYPE_VOIDP,  # hstmt : void* in/out
    -Fiddle::TYPE_SHORT,  # iCol : WORD
    -Fiddle::TYPE_SHORT,  # iField : WORD
    Fiddle::TYPE_VOIDP,  # pCharAttr : void* optional, out
    Fiddle::TYPE_SHORT,  # cbDescMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcbCharAttr : SHORT* optional, out
    Fiddle::TYPE_VOIDP,  # pNumAttr : void* optional, out
  ],
  Fiddle::TYPE_SHORT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "odbc32")]
extern "system" {
    fn SQLColAttributeW(
        hstmt: *mut (),  // void* in/out
        iCol: u16,  // WORD
        iField: u16,  // WORD
        pCharAttr: *mut (),  // void* optional, out
        cbDescMax: i16,  // SHORT
        pcbCharAttr: *mut i16,  // SHORT* optional, out
        pNumAttr: *mut ()  // void* optional, out
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Unicode)]
public static extern short SQLColAttributeW(IntPtr hstmt, ushort iCol, ushort iField, IntPtr pCharAttr, short cbDescMax, IntPtr pcbCharAttr, IntPtr pNumAttr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLColAttributeW' -Namespace Win32 -PassThru
# $api::SQLColAttributeW(hstmt, iCol, iField, pCharAttr, cbDescMax, pcbCharAttr, pNumAttr)

#uselib "ODBC32.dll"
#func global SQLColAttributeW "SQLColAttributeW" wptr, wptr, wptr, wptr, wptr, wptr, wptr
; SQLColAttributeW hstmt, iCol, iField, pCharAttr, cbDescMax, varptr(pcbCharAttr), pNumAttr   ; 戻り値は stat
; hstmt : void* in/out -> "wptr"
; iCol : WORD -> "wptr"
; iField : WORD -> "wptr"
; pCharAttr : void* optional, out -> "wptr"
; cbDescMax : SHORT -> "wptr"
; pcbCharAttr : SHORT* optional, out -> "wptr"
; pNumAttr : void* optional, 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。

出力引数:

#uselib "ODBC32.dll"
#cfunc global SQLColAttributeW "SQLColAttributeW" sptr, int, int, sptr, int, var, sptr
; res = SQLColAttributeW(hstmt, iCol, iField, pCharAttr, cbDescMax, pcbCharAttr, pNumAttr)
; hstmt : void* in/out -> "sptr"
; iCol : WORD -> "int"
; iField : WORD -> "int"
; pCharAttr : void* optional, out -> "sptr"
; cbDescMax : SHORT -> "int"
; pcbCharAttr : SHORT* optional, out -> "var"
; pNumAttr : void* optional, out -> "sptr"
; ※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 "ODBC32.dll"
#cfunc global SQLColAttributeW "SQLColAttributeW" sptr, int, int, sptr, int, sptr, sptr
; res = SQLColAttributeW(hstmt, iCol, iField, pCharAttr, cbDescMax, varptr(pcbCharAttr), pNumAttr)
; hstmt : void* in/out -> "sptr"
; iCol : WORD -> "int"
; iField : WORD -> "int"
; pCharAttr : void* optional, out -> "sptr"
; cbDescMax : SHORT -> "int"
; pcbCharAttr : SHORT* optional, out -> "sptr"
; pNumAttr : void* optional, 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:

; SHORT SQLColAttributeW(void* hstmt, WORD iCol, WORD iField, void* pCharAttr, SHORT cbDescMax, SHORT* pcbCharAttr, void* pNumAttr)
#uselib "ODBC32.dll"
#cfunc global SQLColAttributeW "SQLColAttributeW" intptr, int, int, intptr, int, var, intptr
; res = SQLColAttributeW(hstmt, iCol, iField, pCharAttr, cbDescMax, pcbCharAttr, pNumAttr)
; hstmt : void* in/out -> "intptr"
; iCol : WORD -> "int"
; iField : WORD -> "int"
; pCharAttr : void* optional, out -> "intptr"
; cbDescMax : SHORT -> "int"
; pcbCharAttr : SHORT* optional, out -> "var"
; pNumAttr : void* optional, out -> "intptr"
; ※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。; SHORT SQLColAttributeW(void* hstmt, WORD iCol, WORD iField, void* pCharAttr, SHORT cbDescMax, SHORT* pcbCharAttr, void* pNumAttr)
#uselib "ODBC32.dll"
#cfunc global SQLColAttributeW "SQLColAttributeW" intptr, int, int, intptr, int, intptr, intptr
; res = SQLColAttributeW(hstmt, iCol, iField, pCharAttr, cbDescMax, varptr(pcbCharAttr), pNumAttr)
; hstmt : void* in/out -> "intptr"
; iCol : WORD -> "int"
; iField : WORD -> "int"
; pCharAttr : void* optional, out -> "intptr"
; cbDescMax : SHORT -> "int"
; pcbCharAttr : SHORT* optional, out -> "intptr"
; pNumAttr : void* optional, 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 (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLColAttributeW = odbc32.NewProc("SQLColAttributeW")
)

// hstmt (void* in/out), iCol (WORD), iField (WORD), pCharAttr (void* optional, out), cbDescMax (SHORT), pcbCharAttr (SHORT* optional, out), pNumAttr (void* optional, out)
r1, _, err := procSQLColAttributeW.Call(
	uintptr(hstmt),
	uintptr(iCol),
	uintptr(iField),
	uintptr(pCharAttr),
	uintptr(cbDescMax),
	uintptr(pcbCharAttr),
	uintptr(pNumAttr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLColAttributeW(
  hstmt: Pointer;   // void* in/out
  iCol: Word;   // WORD
  iField: Word;   // WORD
  pCharAttr: Pointer;   // void* optional, out
  cbDescMax: Smallint;   // SHORT
  pcbCharAttr: Pointer;   // SHORT* optional, out
  pNumAttr: Pointer   // void* optional, out
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLColAttributeW';

result := DllCall("ODBC32\SQLColAttributeW"
    , "Ptr", hstmt   ; void* in/out
    , "UShort", iCol   ; WORD
    , "UShort", iField   ; WORD
    , "Ptr", pCharAttr   ; void* optional, out
    , "Short", cbDescMax   ; SHORT
    , "Ptr", pcbCharAttr   ; SHORT* optional, out
    , "Ptr", pNumAttr   ; void* optional, out
    , "Short")   ; return: SHORT

●SQLColAttributeW(hstmt, iCol, iField, pCharAttr, cbDescMax, pcbCharAttr, pNumAttr) = DLL("ODBC32.dll", "int SQLColAttributeW(void*, int, int, void*, int, void*, void*)")
# 呼び出し: SQLColAttributeW(hstmt, iCol, iField, pCharAttr, cbDescMax, pcbCharAttr, pNumAttr)
# hstmt : void* in/out -> "void*"
# iCol : WORD -> "int"
# iField : WORD -> "int"
# pCharAttr : void* optional, out -> "void*"
# cbDescMax : SHORT -> "int"
# pcbCharAttr : SHORT* optional, out -> "void*"
# pNumAttr : void* optional, 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。