SQLNumResultCols

// ODBC32.dll
#include <windows.h>

SHORT SQLNumResultCols(
    void* StatementHandle,
    SHORT* ColumnCount
);

<DllImport("ODBC32.dll", ExactSpelling:=True)>
Public Shared Function SQLNumResultCols(
    StatementHandle As IntPtr,   ' void* in/out
    <Out> ByRef ColumnCount As Short   ' SHORT* out
) As Short
End Function

' StatementHandle : void* in/out
' ColumnCount : SHORT* out
Declare PtrSafe Function SQLNumResultCols Lib "odbc32" ( _
    ByVal StatementHandle As LongPtr, _
    ByRef ColumnCount As Integer) As Integer
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SQLNumResultCols = ctypes.windll.odbc32.SQLNumResultCols
SQLNumResultCols.restype = ctypes.c_short
SQLNumResultCols.argtypes = [
    ctypes.POINTER(None),  # StatementHandle : void* in/out
    ctypes.POINTER(ctypes.c_short),  # ColumnCount : SHORT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLNumResultCols = Fiddle::Function.new(
  lib['SQLNumResultCols'],
  [
    Fiddle::TYPE_VOIDP,  # StatementHandle : void* in/out
    Fiddle::TYPE_VOIDP,  # ColumnCount : SHORT* out
  ],
  Fiddle::TYPE_SHORT)

#[link(name = "odbc32")]
extern "system" {
    fn SQLNumResultCols(
        StatementHandle: *mut (),  // void* in/out
        ColumnCount: *mut i16  // SHORT* out
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll")]
public static extern short SQLNumResultCols(IntPtr StatementHandle, out short ColumnCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLNumResultCols' -Namespace Win32 -PassThru
# $api::SQLNumResultCols(StatementHandle, ColumnCount)

#uselib "ODBC32.dll"
#func global SQLNumResultCols "SQLNumResultCols" sptr, sptr
; SQLNumResultCols StatementHandle, varptr(ColumnCount)   ; 戻り値は stat
; StatementHandle : void* in/out -> "sptr"
; ColumnCount : SHORT* 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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLNumResultCols = odbc32.NewProc("SQLNumResultCols")
)

// StatementHandle (void* in/out), ColumnCount (SHORT* out)
r1, _, err := procSQLNumResultCols.Call(
	uintptr(StatementHandle),
	uintptr(ColumnCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLNumResultCols(
  StatementHandle: Pointer;   // void* in/out
  ColumnCount: Pointer   // SHORT* out
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLNumResultCols';

result := DllCall("ODBC32\SQLNumResultCols"
    , "Ptr", StatementHandle   ; void* in/out
    , "Ptr", ColumnCount   ; SHORT* out
    , "Short")   ; return: SHORT

●SQLNumResultCols(StatementHandle, ColumnCount) = DLL("ODBC32.dll", "int SQLNumResultCols(void*, void*)")
# 呼び出し: SQLNumResultCols(StatementHandle, ColumnCount)
# StatementHandle : void* in/out -> "void*"
# ColumnCount : SHORT* 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)。

const std = @import("std");

extern "odbc32" fn SQLNumResultCols(
    StatementHandle: ?*anyopaque, // void* in/out
    ColumnCount: [*c]i16 // SHORT* out
) callconv(std.os.windows.WINAPI) i16;

proc SQLNumResultCols(
    StatementHandle: pointer,  # void* in/out
    ColumnCount: ptr int16  # SHORT* out
): int16 {.importc: "SQLNumResultCols", stdcall, dynlib: "ODBC32.dll".}

pragma(lib, "odbc32");
extern(Windows)
short SQLNumResultCols(
    void* StatementHandle,   // void* in/out
    short* ColumnCount   // SHORT* out
);

ccall((:SQLNumResultCols, "ODBC32.dll"), stdcall, Int16,
      (Ptr{Cvoid}, Ptr{Int16}),
      StatementHandle, ColumnCount)
# StatementHandle : void* in/out -> Ptr{Cvoid}
# ColumnCount : SHORT* out -> Ptr{Int16}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int16_t SQLNumResultCols(
    void* StatementHandle,
    int16_t* ColumnCount);
]]
local odbc32 = ffi.load("odbc32")
-- odbc32.SQLNumResultCols(StatementHandle, ColumnCount)
-- StatementHandle : void* in/out
-- ColumnCount : SHORT* out
-- 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('ODBC32.dll');
const SQLNumResultCols = lib.func('__stdcall', 'SQLNumResultCols', 'int16_t', ['void *', 'int16_t *']);
// SQLNumResultCols(StatementHandle, ColumnCount)
// StatementHandle : void* in/out -> 'void *'
// ColumnCount : SHORT* out -> '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", {
  SQLNumResultCols: { parameters: ["pointer", "pointer"], result: "i16" },
});
// lib.symbols.SQLNumResultCols(StatementHandle, ColumnCount)
// StatementHandle : void* in/out -> "pointer"
// ColumnCount : SHORT* out -> "pointer"
// 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
int16_t SQLNumResultCols(
    void* StatementHandle,
    int16_t* ColumnCount);
C, "ODBC32.dll");
// $ffi->SQLNumResultCols(StatementHandle, ColumnCount);
// StatementHandle : void* in/out
// ColumnCount : SHORT* out
// 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);
    short SQLNumResultCols(
        Pointer StatementHandle,   // void* in/out
        ShortByReference ColumnCount   // SHORT* out
    );
}

@[Link("odbc32")]
lib LibODBC32
  fun SQLNumResultCols = SQLNumResultCols(
    StatementHandle : Void*,   # void* in/out
    ColumnCount : Int16*   # SHORT* out
  ) : 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 SQLNumResultColsNative = Int16 Function(Pointer<Void>, Pointer<Int16>);
typedef SQLNumResultColsDart = int Function(Pointer<Void>, Pointer<Int16>);
final SQLNumResultCols = DynamicLibrary.open('ODBC32.dll')
    .lookupFunction<SQLNumResultColsNative, SQLNumResultColsDart>('SQLNumResultCols');
// StatementHandle : void* in/out -> Pointer<Void>
// ColumnCount : SHORT* out -> Pointer<Int16>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SQLNumResultCols(
  StatementHandle: Pointer;   // void* in/out
  ColumnCount: Pointer   // SHORT* out
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLNumResultCols';

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

foreign import stdcall safe "SQLNumResultCols"
  c_SQLNumResultCols :: Ptr () -> Ptr Int16 -> IO Int16
-- StatementHandle : void* in/out -> Ptr ()
-- ColumnCount : SHORT* out -> Ptr 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 sqlnumresultcols =
  foreign "SQLNumResultCols"
    ((ptr void) @-> (ptr int16_t) @-> returning int16_t)
(* StatementHandle : void* in/out -> (ptr void) *)
(* ColumnCount : SHORT* out -> (ptr 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 ("SQLNumResultCols" sqlnum-result-cols :convention :stdcall) :int16
  (statement-handle :pointer)   ; void* in/out
  (column-count :pointer))   ; SHORT* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SQLNumResultCols = Win32::API::More->new('ODBC32',
    'short SQLNumResultCols(LPVOID StatementHandle, LPVOID ColumnCount)');
# my $ret = $SQLNumResultCols->Call($StatementHandle, $ColumnCount);
# StatementHandle : void* in/out -> LPVOID
# ColumnCount : SHORT* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。