SQLColAttributesW

関数

結果セット列の記述属性を取得する(Unicode・非推奨)。

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 SQLColAttributesW(
    void* hstmt,
    WORD icol,
    WORD fDescType,
    void* rgbDesc,   // optional
    SHORT cbDescMax,
    SHORT* pcbDesc,   // optional
    INT* pfDesc   // optional
);

パラメーター

名前	型	方向
hstmt	void*	inout
icol	WORD	in
fDescType	WORD	in
rgbDesc	void*	outoptional
cbDescMax	SHORT	in
pcbDesc	SHORT*	outoptional
pfDesc	INT*	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 SQLColAttributesW(
    void* hstmt,
    WORD icol,
    WORD fDescType,
    void* rgbDesc,   // optional
    SHORT cbDescMax,
    SHORT* pcbDesc,   // optional
    INT* pfDesc   // optional
);

[DllImport("ODBC32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern short SQLColAttributesW(
    IntPtr hstmt,   // void* in/out
    ushort icol,   // WORD
    ushort fDescType,   // WORD
    IntPtr rgbDesc,   // void* optional, out
    short cbDescMax,   // SHORT
    IntPtr pcbDesc,   // SHORT* optional, out
    IntPtr pfDesc   // INT* optional, out
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SQLColAttributesW(
    hstmt As IntPtr,   ' void* in/out
    icol As UShort,   ' WORD
    fDescType As UShort,   ' WORD
    rgbDesc As IntPtr,   ' void* optional, out
    cbDescMax As Short,   ' SHORT
    pcbDesc As IntPtr,   ' SHORT* optional, out
    pfDesc As IntPtr   ' INT* optional, out
) As Short
End Function

' hstmt : void* in/out
' icol : WORD
' fDescType : WORD
' rgbDesc : void* optional, out
' cbDescMax : SHORT
' pcbDesc : SHORT* optional, out
' pfDesc : INT* optional, out
Declare PtrSafe Function SQLColAttributesW Lib "odbc32" ( _
    ByVal hstmt As LongPtr, _
    ByVal icol As Integer, _
    ByVal fDescType As Integer, _
    ByVal rgbDesc As LongPtr, _
    ByVal cbDescMax As Integer, _
    ByVal pcbDesc As LongPtr, _
    ByVal pfDesc 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

SQLColAttributesW = ctypes.windll.odbc32.SQLColAttributesW
SQLColAttributesW.restype = ctypes.c_short
SQLColAttributesW.argtypes = [
    ctypes.POINTER(None),  # hstmt : void* in/out
    ctypes.c_ushort,  # icol : WORD
    ctypes.c_ushort,  # fDescType : WORD
    ctypes.POINTER(None),  # rgbDesc : void* optional, out
    ctypes.c_short,  # cbDescMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcbDesc : SHORT* optional, out
    ctypes.POINTER(ctypes.c_int),  # pfDesc : INT* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLColAttributesW = Fiddle::Function.new(
  lib['SQLColAttributesW'],
  [
    Fiddle::TYPE_VOIDP,  # hstmt : void* in/out
    -Fiddle::TYPE_SHORT,  # icol : WORD
    -Fiddle::TYPE_SHORT,  # fDescType : WORD
    Fiddle::TYPE_VOIDP,  # rgbDesc : void* optional, out
    Fiddle::TYPE_SHORT,  # cbDescMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcbDesc : SHORT* optional, out
    Fiddle::TYPE_VOIDP,  # pfDesc : INT* optional, out
  ],
  Fiddle::TYPE_SHORT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "odbc32")]
extern "system" {
    fn SQLColAttributesW(
        hstmt: *mut (),  // void* in/out
        icol: u16,  // WORD
        fDescType: u16,  // WORD
        rgbDesc: *mut (),  // void* optional, out
        cbDescMax: i16,  // SHORT
        pcbDesc: *mut i16,  // SHORT* optional, out
        pfDesc: *mut i32  // INT* optional, out
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Unicode)]
public static extern short SQLColAttributesW(IntPtr hstmt, ushort icol, ushort fDescType, IntPtr rgbDesc, short cbDescMax, IntPtr pcbDesc, IntPtr pfDesc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLColAttributesW' -Namespace Win32 -PassThru
# $api::SQLColAttributesW(hstmt, icol, fDescType, rgbDesc, cbDescMax, pcbDesc, pfDesc)

#uselib "ODBC32.dll"
#func global SQLColAttributesW "SQLColAttributesW" wptr, wptr, wptr, wptr, wptr, wptr, wptr
; SQLColAttributesW hstmt, icol, fDescType, rgbDesc, cbDescMax, varptr(pcbDesc), varptr(pfDesc)   ; 戻り値は stat
; hstmt : void* in/out -> "wptr"
; icol : WORD -> "wptr"
; fDescType : WORD -> "wptr"
; rgbDesc : void* optional, out -> "wptr"
; cbDescMax : SHORT -> "wptr"
; pcbDesc : SHORT* optional, out -> "wptr"
; pfDesc : INT* 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 SQLColAttributesW "SQLColAttributesW" sptr, int, int, sptr, int, var, var
; res = SQLColAttributesW(hstmt, icol, fDescType, rgbDesc, cbDescMax, pcbDesc, pfDesc)
; hstmt : void* in/out -> "sptr"
; icol : WORD -> "int"
; fDescType : WORD -> "int"
; rgbDesc : void* optional, out -> "sptr"
; cbDescMax : SHORT -> "int"
; pcbDesc : SHORT* optional, out -> "var"
; pfDesc : INT* optional, 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 "ODBC32.dll"
#cfunc global SQLColAttributesW "SQLColAttributesW" sptr, int, int, sptr, int, sptr, sptr
; res = SQLColAttributesW(hstmt, icol, fDescType, rgbDesc, cbDescMax, varptr(pcbDesc), varptr(pfDesc))
; hstmt : void* in/out -> "sptr"
; icol : WORD -> "int"
; fDescType : WORD -> "int"
; rgbDesc : void* optional, out -> "sptr"
; cbDescMax : SHORT -> "int"
; pcbDesc : SHORT* optional, out -> "sptr"
; pfDesc : INT* 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 SQLColAttributesW(void* hstmt, WORD icol, WORD fDescType, void* rgbDesc, SHORT cbDescMax, SHORT* pcbDesc, INT* pfDesc)
#uselib "ODBC32.dll"
#cfunc global SQLColAttributesW "SQLColAttributesW" intptr, int, int, intptr, int, var, var
; res = SQLColAttributesW(hstmt, icol, fDescType, rgbDesc, cbDescMax, pcbDesc, pfDesc)
; hstmt : void* in/out -> "intptr"
; icol : WORD -> "int"
; fDescType : WORD -> "int"
; rgbDesc : void* optional, out -> "intptr"
; cbDescMax : SHORT -> "int"
; pcbDesc : SHORT* optional, out -> "var"
; pfDesc : INT* optional, 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。; SHORT SQLColAttributesW(void* hstmt, WORD icol, WORD fDescType, void* rgbDesc, SHORT cbDescMax, SHORT* pcbDesc, INT* pfDesc)
#uselib "ODBC32.dll"
#cfunc global SQLColAttributesW "SQLColAttributesW" intptr, int, int, intptr, int, intptr, intptr
; res = SQLColAttributesW(hstmt, icol, fDescType, rgbDesc, cbDescMax, varptr(pcbDesc), varptr(pfDesc))
; hstmt : void* in/out -> "intptr"
; icol : WORD -> "int"
; fDescType : WORD -> "int"
; rgbDesc : void* optional, out -> "intptr"
; cbDescMax : SHORT -> "int"
; pcbDesc : SHORT* optional, out -> "intptr"
; pfDesc : INT* 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")
	procSQLColAttributesW = odbc32.NewProc("SQLColAttributesW")
)

// hstmt (void* in/out), icol (WORD), fDescType (WORD), rgbDesc (void* optional, out), cbDescMax (SHORT), pcbDesc (SHORT* optional, out), pfDesc (INT* optional, out)
r1, _, err := procSQLColAttributesW.Call(
	uintptr(hstmt),
	uintptr(icol),
	uintptr(fDescType),
	uintptr(rgbDesc),
	uintptr(cbDescMax),
	uintptr(pcbDesc),
	uintptr(pfDesc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLColAttributesW(
  hstmt: Pointer;   // void* in/out
  icol: Word;   // WORD
  fDescType: Word;   // WORD
  rgbDesc: Pointer;   // void* optional, out
  cbDescMax: Smallint;   // SHORT
  pcbDesc: Pointer;   // SHORT* optional, out
  pfDesc: Pointer   // INT* optional, out
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLColAttributesW';

result := DllCall("ODBC32\SQLColAttributesW"
    , "Ptr", hstmt   ; void* in/out
    , "UShort", icol   ; WORD
    , "UShort", fDescType   ; WORD
    , "Ptr", rgbDesc   ; void* optional, out
    , "Short", cbDescMax   ; SHORT
    , "Ptr", pcbDesc   ; SHORT* optional, out
    , "Ptr", pfDesc   ; INT* optional, out
    , "Short")   ; return: SHORT

●SQLColAttributesW(hstmt, icol, fDescType, rgbDesc, cbDescMax, pcbDesc, pfDesc) = DLL("ODBC32.dll", "int SQLColAttributesW(void*, int, int, void*, int, void*, void*)")
# 呼び出し: SQLColAttributesW(hstmt, icol, fDescType, rgbDesc, cbDescMax, pcbDesc, pfDesc)
# hstmt : void* in/out -> "void*"
# icol : WORD -> "int"
# fDescType : WORD -> "int"
# rgbDesc : void* optional, out -> "void*"
# cbDescMax : SHORT -> "int"
# pcbDesc : SHORT* optional, out -> "void*"
# pfDesc : INT* 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。