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SQLProcedureColumnsW

関数

ストアドプロシージャの引数や戻り値列の情報を返す(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 SQLProcedureColumnsW(
    void* hstmt,
    WORD* szCatalogName,   // optional
    SHORT cchCatalogName,
    WORD* szSchemaName,   // optional
    SHORT cchSchemaName,
    WORD* szProcName,   // optional
    SHORT cchProcName,
    WORD* szColumnName,   // optional
    SHORT cchColumnName
);

パラメーター

名前	型	方向	説明
hstmt	void*	inout	ODBCのステートメントハンドル。結果セットがこのハンドルに生成される。
szCatalogName	WORD*	inoptional	検索対象のカタログ名。NULLまたはパターンを指定でき、検索条件として絞り込む。
cchCatalogName	SHORT	in	szCatalogNameの文字数。SQL_NTSを指定するとNUL終端文字列として扱われる。
szSchemaName	WORD*	inoptional	検索対象のスキーマ名。NULLやパターン文字を指定して絞り込める。
cchSchemaName	SHORT	in	szSchemaNameの文字数。SQL_NTSでNUL終端文字列として扱う。
szProcName	WORD*	inoptional	検索対象のプロシージャ名。NULLやパターンで絞り込み可能。
cchProcName	SHORT	in	szProcNameの文字数。SQL_NTSでNUL終端文字列とみなす。
szColumnName	WORD*	inoptional	検索対象の列名。NULLやパターンで絞り込む。
cchColumnName	SHORT	in	szColumnNameの文字数。SQL_NTSでNUL終端文字列とみなす。

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 SQLProcedureColumnsW(
    void* hstmt,
    WORD* szCatalogName,   // optional
    SHORT cchCatalogName,
    WORD* szSchemaName,   // optional
    SHORT cchSchemaName,
    WORD* szProcName,   // optional
    SHORT cchProcName,
    WORD* szColumnName,   // optional
    SHORT cchColumnName
);

[DllImport("ODBC32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern short SQLProcedureColumnsW(
    IntPtr hstmt,   // void* in/out
    IntPtr szCatalogName,   // WORD* optional
    short cchCatalogName,   // SHORT
    IntPtr szSchemaName,   // WORD* optional
    short cchSchemaName,   // SHORT
    IntPtr szProcName,   // WORD* optional
    short cchProcName,   // SHORT
    IntPtr szColumnName,   // WORD* optional
    short cchColumnName   // SHORT
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SQLProcedureColumnsW(
    hstmt As IntPtr,   ' void* in/out
    szCatalogName As IntPtr,   ' WORD* optional
    cchCatalogName As Short,   ' SHORT
    szSchemaName As IntPtr,   ' WORD* optional
    cchSchemaName As Short,   ' SHORT
    szProcName As IntPtr,   ' WORD* optional
    cchProcName As Short,   ' SHORT
    szColumnName As IntPtr,   ' WORD* optional
    cchColumnName As Short   ' SHORT
) As Short
End Function

' hstmt : void* in/out
' szCatalogName : WORD* optional
' cchCatalogName : SHORT
' szSchemaName : WORD* optional
' cchSchemaName : SHORT
' szProcName : WORD* optional
' cchProcName : SHORT
' szColumnName : WORD* optional
' cchColumnName : SHORT
Declare PtrSafe Function SQLProcedureColumnsW Lib "odbc32" ( _
    ByVal hstmt As LongPtr, _
    ByVal szCatalogName As LongPtr, _
    ByVal cchCatalogName As Integer, _
    ByVal szSchemaName As LongPtr, _
    ByVal cchSchemaName As Integer, _
    ByVal szProcName As LongPtr, _
    ByVal cchProcName As Integer, _
    ByVal szColumnName As LongPtr, _
    ByVal cchColumnName As Integer) 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

SQLProcedureColumnsW = ctypes.windll.odbc32.SQLProcedureColumnsW
SQLProcedureColumnsW.restype = ctypes.c_short
SQLProcedureColumnsW.argtypes = [
    ctypes.POINTER(None),  # hstmt : void* in/out
    ctypes.POINTER(ctypes.c_ushort),  # szCatalogName : WORD* optional
    ctypes.c_short,  # cchCatalogName : SHORT
    ctypes.POINTER(ctypes.c_ushort),  # szSchemaName : WORD* optional
    ctypes.c_short,  # cchSchemaName : SHORT
    ctypes.POINTER(ctypes.c_ushort),  # szProcName : WORD* optional
    ctypes.c_short,  # cchProcName : SHORT
    ctypes.POINTER(ctypes.c_ushort),  # szColumnName : WORD* optional
    ctypes.c_short,  # cchColumnName : SHORT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLProcedureColumnsW = Fiddle::Function.new(
  lib['SQLProcedureColumnsW'],
  [
    Fiddle::TYPE_VOIDP,  # hstmt : void* in/out
    Fiddle::TYPE_VOIDP,  # szCatalogName : WORD* optional
    Fiddle::TYPE_SHORT,  # cchCatalogName : SHORT
    Fiddle::TYPE_VOIDP,  # szSchemaName : WORD* optional
    Fiddle::TYPE_SHORT,  # cchSchemaName : SHORT
    Fiddle::TYPE_VOIDP,  # szProcName : WORD* optional
    Fiddle::TYPE_SHORT,  # cchProcName : SHORT
    Fiddle::TYPE_VOIDP,  # szColumnName : WORD* optional
    Fiddle::TYPE_SHORT,  # cchColumnName : SHORT
  ],
  Fiddle::TYPE_SHORT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "odbc32")]
extern "system" {
    fn SQLProcedureColumnsW(
        hstmt: *mut (),  // void* in/out
        szCatalogName: *mut u16,  // WORD* optional
        cchCatalogName: i16,  // SHORT
        szSchemaName: *mut u16,  // WORD* optional
        cchSchemaName: i16,  // SHORT
        szProcName: *mut u16,  // WORD* optional
        cchProcName: i16,  // SHORT
        szColumnName: *mut u16,  // WORD* optional
        cchColumnName: i16  // SHORT
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Unicode)]
public static extern short SQLProcedureColumnsW(IntPtr hstmt, IntPtr szCatalogName, short cchCatalogName, IntPtr szSchemaName, short cchSchemaName, IntPtr szProcName, short cchProcName, IntPtr szColumnName, short cchColumnName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLProcedureColumnsW' -Namespace Win32 -PassThru
# $api::SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)

#uselib "ODBC32.dll"
#func global SQLProcedureColumnsW "SQLProcedureColumnsW" wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr
; SQLProcedureColumnsW hstmt, varptr(szCatalogName), cchCatalogName, varptr(szSchemaName), cchSchemaName, varptr(szProcName), cchProcName, varptr(szColumnName), cchColumnName   ; 戻り値は stat
; hstmt : void* in/out -> "wptr"
; szCatalogName : WORD* optional -> "wptr"
; cchCatalogName : SHORT -> "wptr"
; szSchemaName : WORD* optional -> "wptr"
; cchSchemaName : SHORT -> "wptr"
; szProcName : WORD* optional -> "wptr"
; cchProcName : SHORT -> "wptr"
; szColumnName : WORD* optional -> "wptr"
; cchColumnName : SHORT -> "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 SQLProcedureColumnsW "SQLProcedureColumnsW" sptr, var, int, var, int, var, int, var, int
; res = SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)
; hstmt : void* in/out -> "sptr"
; szCatalogName : WORD* optional -> "var"
; cchCatalogName : SHORT -> "int"
; szSchemaName : WORD* optional -> "var"
; cchSchemaName : SHORT -> "int"
; szProcName : WORD* optional -> "var"
; cchProcName : SHORT -> "int"
; szColumnName : WORD* optional -> "var"
; cchColumnName : SHORT -> "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 "ODBC32.dll"
#cfunc global SQLProcedureColumnsW "SQLProcedureColumnsW" sptr, sptr, int, sptr, int, sptr, int, sptr, int
; res = SQLProcedureColumnsW(hstmt, varptr(szCatalogName), cchCatalogName, varptr(szSchemaName), cchSchemaName, varptr(szProcName), cchProcName, varptr(szColumnName), cchColumnName)
; hstmt : void* in/out -> "sptr"
; szCatalogName : WORD* optional -> "sptr"
; cchCatalogName : SHORT -> "int"
; szSchemaName : WORD* optional -> "sptr"
; cchSchemaName : SHORT -> "int"
; szProcName : WORD* optional -> "sptr"
; cchProcName : SHORT -> "int"
; szColumnName : WORD* optional -> "sptr"
; cchColumnName : SHORT -> "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:

; SHORT SQLProcedureColumnsW(void* hstmt, WORD* szCatalogName, SHORT cchCatalogName, WORD* szSchemaName, SHORT cchSchemaName, WORD* szProcName, SHORT cchProcName, WORD* szColumnName, SHORT cchColumnName)
#uselib "ODBC32.dll"
#cfunc global SQLProcedureColumnsW "SQLProcedureColumnsW" intptr, var, int, var, int, var, int, var, int
; res = SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)
; hstmt : void* in/out -> "intptr"
; szCatalogName : WORD* optional -> "var"
; cchCatalogName : SHORT -> "int"
; szSchemaName : WORD* optional -> "var"
; cchSchemaName : SHORT -> "int"
; szProcName : WORD* optional -> "var"
; cchProcName : SHORT -> "int"
; szColumnName : WORD* optional -> "var"
; cchColumnName : SHORT -> "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。; SHORT SQLProcedureColumnsW(void* hstmt, WORD* szCatalogName, SHORT cchCatalogName, WORD* szSchemaName, SHORT cchSchemaName, WORD* szProcName, SHORT cchProcName, WORD* szColumnName, SHORT cchColumnName)
#uselib "ODBC32.dll"
#cfunc global SQLProcedureColumnsW "SQLProcedureColumnsW" intptr, intptr, int, intptr, int, intptr, int, intptr, int
; res = SQLProcedureColumnsW(hstmt, varptr(szCatalogName), cchCatalogName, varptr(szSchemaName), cchSchemaName, varptr(szProcName), cchProcName, varptr(szColumnName), cchColumnName)
; hstmt : void* in/out -> "intptr"
; szCatalogName : WORD* optional -> "intptr"
; cchCatalogName : SHORT -> "int"
; szSchemaName : WORD* optional -> "intptr"
; cchSchemaName : SHORT -> "int"
; szProcName : WORD* optional -> "intptr"
; cchProcName : SHORT -> "int"
; szColumnName : WORD* optional -> "intptr"
; cchColumnName : SHORT -> "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 (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLProcedureColumnsW = odbc32.NewProc("SQLProcedureColumnsW")
)

// hstmt (void* in/out), szCatalogName (WORD* optional), cchCatalogName (SHORT), szSchemaName (WORD* optional), cchSchemaName (SHORT), szProcName (WORD* optional), cchProcName (SHORT), szColumnName (WORD* optional), cchColumnName (SHORT)
r1, _, err := procSQLProcedureColumnsW.Call(
	uintptr(hstmt),
	uintptr(szCatalogName),
	uintptr(cchCatalogName),
	uintptr(szSchemaName),
	uintptr(cchSchemaName),
	uintptr(szProcName),
	uintptr(cchProcName),
	uintptr(szColumnName),
	uintptr(cchColumnName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLProcedureColumnsW(
  hstmt: Pointer;   // void* in/out
  szCatalogName: Pointer;   // WORD* optional
  cchCatalogName: Smallint;   // SHORT
  szSchemaName: Pointer;   // WORD* optional
  cchSchemaName: Smallint;   // SHORT
  szProcName: Pointer;   // WORD* optional
  cchProcName: Smallint;   // SHORT
  szColumnName: Pointer;   // WORD* optional
  cchColumnName: Smallint   // SHORT
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLProcedureColumnsW';

result := DllCall("ODBC32\SQLProcedureColumnsW"
    , "Ptr", hstmt   ; void* in/out
    , "Ptr", szCatalogName   ; WORD* optional
    , "Short", cchCatalogName   ; SHORT
    , "Ptr", szSchemaName   ; WORD* optional
    , "Short", cchSchemaName   ; SHORT
    , "Ptr", szProcName   ; WORD* optional
    , "Short", cchProcName   ; SHORT
    , "Ptr", szColumnName   ; WORD* optional
    , "Short", cchColumnName   ; SHORT
    , "Short")   ; return: SHORT

●SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName) = DLL("ODBC32.dll", "int SQLProcedureColumnsW(void*, void*, int, void*, int, void*, int, void*, int)")
# 呼び出し: SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)
# hstmt : void* in/out -> "void*"
# szCatalogName : WORD* optional -> "void*"
# cchCatalogName : SHORT -> "int"
# szSchemaName : WORD* optional -> "void*"
# cchSchemaName : SHORT -> "int"
# szProcName : WORD* optional -> "void*"
# cchProcName : SHORT -> "int"
# szColumnName : WORD* optional -> "void*"
# cchColumnName : SHORT -> "int"
# 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。

const std = @import("std");

extern "odbc32" fn SQLProcedureColumnsW(
    hstmt: ?*anyopaque, // void* in/out
    szCatalogName: [*c]u16, // WORD* optional
    cchCatalogName: i16, // SHORT
    szSchemaName: [*c]u16, // WORD* optional
    cchSchemaName: i16, // SHORT
    szProcName: [*c]u16, // WORD* optional
    cchProcName: i16, // SHORT
    szColumnName: [*c]u16, // WORD* optional
    cchColumnName: i16 // SHORT
) callconv(std.os.windows.WINAPI) i16;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc SQLProcedureColumnsW(
    hstmt: pointer,  # void* in/out
    szCatalogName: ptr uint16,  # WORD* optional
    cchCatalogName: int16,  # SHORT
    szSchemaName: ptr uint16,  # WORD* optional
    cchSchemaName: int16,  # SHORT
    szProcName: ptr uint16,  # WORD* optional
    cchProcName: int16,  # SHORT
    szColumnName: ptr uint16,  # WORD* optional
    cchColumnName: int16  # SHORT
): int16 {.importc: "SQLProcedureColumnsW", stdcall, dynlib: "ODBC32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "odbc32");
extern(Windows)
short SQLProcedureColumnsW(
    void* hstmt,   // void* in/out
    ushort* szCatalogName,   // WORD* optional
    short cchCatalogName,   // SHORT
    ushort* szSchemaName,   // WORD* optional
    short cchSchemaName,   // SHORT
    ushort* szProcName,   // WORD* optional
    short cchProcName,   // SHORT
    ushort* szColumnName,   // WORD* optional
    short cchColumnName   // SHORT
);

ccall((:SQLProcedureColumnsW, "ODBC32.dll"), stdcall, Int16,
      (Ptr{Cvoid}, Ptr{UInt16}, Int16, Ptr{UInt16}, Int16, Ptr{UInt16}, Int16, Ptr{UInt16}, Int16),
      hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)
# hstmt : void* in/out -> Ptr{Cvoid}
# szCatalogName : WORD* optional -> Ptr{UInt16}
# cchCatalogName : SHORT -> Int16
# szSchemaName : WORD* optional -> Ptr{UInt16}
# cchSchemaName : SHORT -> Int16
# szProcName : WORD* optional -> Ptr{UInt16}
# cchProcName : SHORT -> Int16
# szColumnName : WORD* optional -> Ptr{UInt16}
# cchColumnName : SHORT -> Int16
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
int16_t SQLProcedureColumnsW(
    void* hstmt,
    uint16_t* szCatalogName,
    int16_t cchCatalogName,
    uint16_t* szSchemaName,
    int16_t cchSchemaName,
    uint16_t* szProcName,
    int16_t cchProcName,
    uint16_t* szColumnName,
    int16_t cchColumnName);
]]
local odbc32 = ffi.load("odbc32")
-- odbc32.SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)
-- hstmt : void* in/out
-- szCatalogName : WORD* optional
-- cchCatalogName : SHORT
-- szSchemaName : WORD* optional
-- cchSchemaName : SHORT
-- szProcName : WORD* optional
-- cchProcName : SHORT
-- szColumnName : WORD* optional
-- cchColumnName : SHORT
-- 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('ODBC32.dll');
const SQLProcedureColumnsW = lib.func('__stdcall', 'SQLProcedureColumnsW', 'int16_t', ['void *', 'uint16_t *', 'int16_t', 'uint16_t *', 'int16_t', 'uint16_t *', 'int16_t', 'uint16_t *', 'int16_t']);
// SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)
// hstmt : void* in/out -> 'void *'
// szCatalogName : WORD* optional -> 'uint16_t *'
// cchCatalogName : SHORT -> 'int16_t'
// szSchemaName : WORD* optional -> 'uint16_t *'
// cchSchemaName : SHORT -> 'int16_t'
// szProcName : WORD* optional -> 'uint16_t *'
// cchProcName : SHORT -> 'int16_t'
// szColumnName : WORD* optional -> 'uint16_t *'
// cchColumnName : SHORT -> 'int16_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("ODBC32.dll", {
  SQLProcedureColumnsW: { parameters: ["pointer", "pointer", "i16", "pointer", "i16", "pointer", "i16", "pointer", "i16"], result: "i16" },
});
// lib.symbols.SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName)
// hstmt : void* in/out -> "pointer"
// szCatalogName : WORD* optional -> "pointer"
// cchCatalogName : SHORT -> "i16"
// szSchemaName : WORD* optional -> "pointer"
// cchSchemaName : SHORT -> "i16"
// szProcName : WORD* optional -> "pointer"
// cchProcName : SHORT -> "i16"
// szColumnName : WORD* optional -> "pointer"
// cchColumnName : SHORT -> "i16"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int16_t SQLProcedureColumnsW(
    void* hstmt,
    uint16_t* szCatalogName,
    int16_t cchCatalogName,
    uint16_t* szSchemaName,
    int16_t cchSchemaName,
    uint16_t* szProcName,
    int16_t cchProcName,
    uint16_t* szColumnName,
    int16_t cchColumnName);
C, "ODBC32.dll");
// $ffi->SQLProcedureColumnsW(hstmt, szCatalogName, cchCatalogName, szSchemaName, cchSchemaName, szProcName, cchProcName, szColumnName, cchColumnName);
// hstmt : void* in/out
// szCatalogName : WORD* optional
// cchCatalogName : SHORT
// szSchemaName : WORD* optional
// cchSchemaName : SHORT
// szProcName : WORD* optional
// cchProcName : SHORT
// szColumnName : WORD* optional
// cchColumnName : SHORT
// 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 Odbc32 extends StdCallLibrary {
    Odbc32 INSTANCE = Native.load("odbc32", Odbc32.class, W32APIOptions.UNICODE_OPTIONS);
    short SQLProcedureColumnsW(
        Pointer hstmt,   // void* in/out
        ShortByReference szCatalogName,   // WORD* optional
        short cchCatalogName,   // SHORT
        ShortByReference szSchemaName,   // WORD* optional
        short cchSchemaName,   // SHORT
        ShortByReference szProcName,   // WORD* optional
        short cchProcName,   // SHORT
        ShortByReference szColumnName,   // WORD* optional
        short cchColumnName   // SHORT
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("odbc32")]
lib LibODBC32
  fun SQLProcedureColumnsW = SQLProcedureColumnsW(
    hstmt : Void*,   # void* in/out
    szCatalogName : UInt16*,   # WORD* optional
    cchCatalogName : Int16,   # SHORT
    szSchemaName : UInt16*,   # WORD* optional
    cchSchemaName : Int16,   # SHORT
    szProcName : UInt16*,   # WORD* optional
    cchProcName : Int16,   # SHORT
    szColumnName : UInt16*,   # WORD* optional
    cchColumnName : Int16   # SHORT
  ) : Int16
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 SQLProcedureColumnsWNative = Int16 Function(Pointer<Void>, Pointer<Uint16>, Int16, Pointer<Uint16>, Int16, Pointer<Uint16>, Int16, Pointer<Uint16>, Int16);
typedef SQLProcedureColumnsWDart = int Function(Pointer<Void>, Pointer<Uint16>, int, Pointer<Uint16>, int, Pointer<Uint16>, int, Pointer<Uint16>, int);
final SQLProcedureColumnsW = DynamicLibrary.open('ODBC32.dll')
    .lookupFunction<SQLProcedureColumnsWNative, SQLProcedureColumnsWDart>('SQLProcedureColumnsW');
// hstmt : void* in/out -> Pointer<Void>
// szCatalogName : WORD* optional -> Pointer<Uint16>
// cchCatalogName : SHORT -> Int16
// szSchemaName : WORD* optional -> Pointer<Uint16>
// cchSchemaName : SHORT -> Int16
// szProcName : WORD* optional -> Pointer<Uint16>
// cchProcName : SHORT -> Int16
// szColumnName : WORD* optional -> Pointer<Uint16>
// cchColumnName : SHORT -> Int16
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SQLProcedureColumnsW(
  hstmt: Pointer;   // void* in/out
  szCatalogName: Pointer;   // WORD* optional
  cchCatalogName: Smallint;   // SHORT
  szSchemaName: Pointer;   // WORD* optional
  cchSchemaName: Smallint;   // SHORT
  szProcName: Pointer;   // WORD* optional
  cchProcName: Smallint;   // SHORT
  szColumnName: Pointer;   // WORD* optional
  cchColumnName: Smallint   // SHORT
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLProcedureColumnsW';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SQLProcedureColumnsW"
  c_SQLProcedureColumnsW :: Ptr () -> Ptr Word16 -> Int16 -> Ptr Word16 -> Int16 -> Ptr Word16 -> Int16 -> Ptr Word16 -> Int16 -> IO Int16
-- hstmt : void* in/out -> Ptr ()
-- szCatalogName : WORD* optional -> Ptr Word16
-- cchCatalogName : SHORT -> Int16
-- szSchemaName : WORD* optional -> Ptr Word16
-- cchSchemaName : SHORT -> Int16
-- szProcName : WORD* optional -> Ptr Word16
-- cchProcName : SHORT -> Int16
-- szColumnName : WORD* optional -> Ptr Word16
-- cchColumnName : SHORT -> Int16
-- 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 sqlprocedurecolumnsw =
  foreign "SQLProcedureColumnsW"
    ((ptr void) @-> (ptr uint16_t) @-> int16_t @-> (ptr uint16_t) @-> int16_t @-> (ptr uint16_t) @-> int16_t @-> (ptr uint16_t) @-> int16_t @-> returning int16_t)
(* hstmt : void* in/out -> (ptr void) *)
(* szCatalogName : WORD* optional -> (ptr uint16_t) *)
(* cchCatalogName : SHORT -> int16_t *)
(* szSchemaName : WORD* optional -> (ptr uint16_t) *)
(* cchSchemaName : SHORT -> int16_t *)
(* szProcName : WORD* optional -> (ptr uint16_t) *)
(* cchProcName : SHORT -> int16_t *)
(* szColumnName : WORD* optional -> (ptr uint16_t) *)
(* cchColumnName : SHORT -> int16_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 odbc32 (t "ODBC32.dll"))
(cffi:use-foreign-library odbc32)

(cffi:defcfun ("SQLProcedureColumnsW" sqlprocedure-columns-w :convention :stdcall) :int16
  (hstmt :pointer)   ; void* in/out
  (sz-catalog-name :pointer)   ; WORD* optional
  (cch-catalog-name :int16)   ; SHORT
  (sz-schema-name :pointer)   ; WORD* optional
  (cch-schema-name :int16)   ; SHORT
  (sz-proc-name :pointer)   ; WORD* optional
  (cch-proc-name :int16)   ; SHORT
  (sz-column-name :pointer)   ; WORD* optional
  (cch-column-name :int16))   ; SHORT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SQLProcedureColumnsW = Win32::API::More->new('ODBC32',
    'short SQLProcedureColumnsW(LPVOID hstmt, LPVOID szCatalogName, short cchCatalogName, LPVOID szSchemaName, short cchSchemaName, LPVOID szProcName, short cchProcName, LPVOID szColumnName, short cchColumnName)');
# my $ret = $SQLProcedureColumnsW->Call($hstmt, $szCatalogName, $cchCatalogName, $szSchemaName, $cchSchemaName, $szProcName, $cchProcName, $szColumnName, $cchColumnName);
# hstmt : void* in/out -> LPVOID
# szCatalogName : WORD* optional -> LPVOID
# cchCatalogName : SHORT -> short
# szSchemaName : WORD* optional -> LPVOID
# cchSchemaName : SHORT -> short
# szProcName : WORD* optional -> LPVOID
# cchProcName : SHORT -> short
# szColumnName : WORD* optional -> LPVOID
# cchColumnName : SHORT -> short
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。

SQLProcedureColumnsW

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