SQLSetDescField

// ODBC32.dll  (ANSI / -A)
#include <windows.h>

SHORT SQLSetDescField(
    void* DescriptorHandle,
    SHORT RecNumber,
    SHORT FieldIdentifier,
    void* Value,
    INT BufferLength
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function SQLSetDescField(
    DescriptorHandle As IntPtr,   ' void* in/out
    RecNumber As Short,   ' SHORT
    FieldIdentifier As Short,   ' SHORT
    Value As IntPtr,   ' void*
    BufferLength As Integer   ' INT
) As Short
End Function

' DescriptorHandle : void* in/out
' RecNumber : SHORT
' FieldIdentifier : SHORT
' Value : void*
' BufferLength : INT
Declare PtrSafe Function SQLSetDescField Lib "odbc32" ( _
    ByVal DescriptorHandle As LongPtr, _
    ByVal RecNumber As Integer, _
    ByVal FieldIdentifier As Integer, _
    ByVal Value As LongPtr, _
    ByVal BufferLength As Long) As Integer
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SQLSetDescField = ctypes.windll.odbc32.SQLSetDescField
SQLSetDescField.restype = ctypes.c_short
SQLSetDescField.argtypes = [
    ctypes.POINTER(None),  # DescriptorHandle : void* in/out
    ctypes.c_short,  # RecNumber : SHORT
    ctypes.c_short,  # FieldIdentifier : SHORT
    ctypes.POINTER(None),  # Value : void*
    ctypes.c_int,  # BufferLength : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLSetDescField = Fiddle::Function.new(
  lib['SQLSetDescField'],
  [
    Fiddle::TYPE_VOIDP,  # DescriptorHandle : void* in/out
    Fiddle::TYPE_SHORT,  # RecNumber : SHORT
    Fiddle::TYPE_SHORT,  # FieldIdentifier : SHORT
    Fiddle::TYPE_VOIDP,  # Value : void*
    Fiddle::TYPE_INT,  # BufferLength : INT
  ],
  Fiddle::TYPE_SHORT)

#[link(name = "odbc32")]
extern "system" {
    fn SQLSetDescField(
        DescriptorHandle: *mut (),  // void* in/out
        RecNumber: i16,  // SHORT
        FieldIdentifier: i16,  // SHORT
        Value: *mut (),  // void*
        BufferLength: i32  // INT
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Ansi)]
public static extern short SQLSetDescField(IntPtr DescriptorHandle, short RecNumber, short FieldIdentifier, IntPtr Value, int BufferLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLSetDescField' -Namespace Win32 -PassThru
# $api::SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)

#uselib "ODBC32.dll"
#func global SQLSetDescField "SQLSetDescField" sptr, sptr, sptr, sptr, sptr
; SQLSetDescField DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength   ; 戻り値は stat
; DescriptorHandle : void* in/out -> "sptr"
; RecNumber : SHORT -> "sptr"
; FieldIdentifier : SHORT -> "sptr"
; Value : void* -> "sptr"
; BufferLength : INT -> "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。

#uselib "ODBC32.dll"
#cfunc global SQLSetDescField "SQLSetDescField" sptr, int, int, sptr, int
; res = SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)
; DescriptorHandle : void* in/out -> "sptr"
; RecNumber : SHORT -> "int"
; FieldIdentifier : SHORT -> "int"
; Value : void* -> "sptr"
; BufferLength : INT -> "int"

; SHORT SQLSetDescField(void* DescriptorHandle, SHORT RecNumber, SHORT FieldIdentifier, void* Value, INT BufferLength)
#uselib "ODBC32.dll"
#cfunc global SQLSetDescField "SQLSetDescField" intptr, int, int, intptr, int
; res = SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)
; DescriptorHandle : void* in/out -> "intptr"
; RecNumber : SHORT -> "int"
; FieldIdentifier : SHORT -> "int"
; Value : void* -> "intptr"
; BufferLength : INT -> "int"

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

var (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLSetDescField = odbc32.NewProc("SQLSetDescField")
)

// DescriptorHandle (void* in/out), RecNumber (SHORT), FieldIdentifier (SHORT), Value (void*), BufferLength (INT)
r1, _, err := procSQLSetDescField.Call(
	uintptr(DescriptorHandle),
	uintptr(RecNumber),
	uintptr(FieldIdentifier),
	uintptr(Value),
	uintptr(BufferLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLSetDescField(
  DescriptorHandle: Pointer;   // void* in/out
  RecNumber: Smallint;   // SHORT
  FieldIdentifier: Smallint;   // SHORT
  Value: Pointer;   // void*
  BufferLength: Integer   // INT
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLSetDescField';

result := DllCall("ODBC32\SQLSetDescField"
    , "Ptr", DescriptorHandle   ; void* in/out
    , "Short", RecNumber   ; SHORT
    , "Short", FieldIdentifier   ; SHORT
    , "Ptr", Value   ; void*
    , "Int", BufferLength   ; INT
    , "Short")   ; return: SHORT

●SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength) = DLL("ODBC32.dll", "int SQLSetDescField(void*, int, int, void*, int)")
# 呼び出し: SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)
# DescriptorHandle : void* in/out -> "void*"
# RecNumber : SHORT -> "int"
# FieldIdentifier : SHORT -> "int"
# Value : void* -> "void*"
# BufferLength : INT -> "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)。

const std = @import("std");

extern "odbc32" fn SQLSetDescField(
    DescriptorHandle: ?*anyopaque, // void* in/out
    RecNumber: i16, // SHORT
    FieldIdentifier: i16, // SHORT
    Value: ?*anyopaque, // void*
    BufferLength: i32 // INT
) callconv(std.os.windows.WINAPI) i16;

proc SQLSetDescField(
    DescriptorHandle: pointer,  # void* in/out
    RecNumber: int16,  # SHORT
    FieldIdentifier: int16,  # SHORT
    Value: pointer,  # void*
    BufferLength: int32  # INT
): int16 {.importc: "SQLSetDescField", stdcall, dynlib: "ODBC32.dll".}

pragma(lib, "odbc32");
extern(Windows)
short SQLSetDescField(
    void* DescriptorHandle,   // void* in/out
    short RecNumber,   // SHORT
    short FieldIdentifier,   // SHORT
    void* Value,   // void*
    int BufferLength   // INT
);

ccall((:SQLSetDescField, "ODBC32.dll"), stdcall, Int16,
      (Ptr{Cvoid}, Int16, Int16, Ptr{Cvoid}, Int32),
      DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)
# DescriptorHandle : void* in/out -> Ptr{Cvoid}
# RecNumber : SHORT -> Int16
# FieldIdentifier : SHORT -> Int16
# Value : void* -> Ptr{Cvoid}
# BufferLength : INT -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int16_t SQLSetDescField(
    void* DescriptorHandle,
    int16_t RecNumber,
    int16_t FieldIdentifier,
    void* Value,
    int32_t BufferLength);
]]
local odbc32 = ffi.load("odbc32")
-- odbc32.SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)
-- DescriptorHandle : void* in/out
-- RecNumber : SHORT
-- FieldIdentifier : SHORT
-- Value : void*
-- BufferLength : INT
-- 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 SQLSetDescField = lib.func('__stdcall', 'SQLSetDescField', 'int16_t', ['void *', 'int16_t', 'int16_t', 'void *', 'int32_t']);
// SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)
// DescriptorHandle : void* in/out -> 'void *'
// RecNumber : SHORT -> 'int16_t'
// FieldIdentifier : SHORT -> 'int16_t'
// Value : void* -> 'void *'
// BufferLength : INT -> 'int32_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", {
  SQLSetDescField: { parameters: ["pointer", "i16", "i16", "pointer", "i32"], result: "i16" },
});
// lib.symbols.SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength)
// DescriptorHandle : void* in/out -> "pointer"
// RecNumber : SHORT -> "i16"
// FieldIdentifier : SHORT -> "i16"
// Value : void* -> "pointer"
// BufferLength : INT -> "i32"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int16_t SQLSetDescField(
    void* DescriptorHandle,
    int16_t RecNumber,
    int16_t FieldIdentifier,
    void* Value,
    int32_t BufferLength);
C, "ODBC32.dll");
// $ffi->SQLSetDescField(DescriptorHandle, RecNumber, FieldIdentifier, Value, BufferLength);
// DescriptorHandle : void* in/out
// RecNumber : SHORT
// FieldIdentifier : SHORT
// Value : void*
// BufferLength : INT
// 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.ASCII_OPTIONS);
    short SQLSetDescField(
        Pointer DescriptorHandle,   // void* in/out
        short RecNumber,   // SHORT
        short FieldIdentifier,   // SHORT
        Pointer Value,   // void*
        int BufferLength   // INT
    );
}

@[Link("odbc32")]
lib LibODBC32
  fun SQLSetDescField = SQLSetDescField(
    DescriptorHandle : Void*,   # void* in/out
    RecNumber : Int16,   # SHORT
    FieldIdentifier : Int16,   # SHORT
    Value : Void*,   # void*
    BufferLength : Int32   # INT
  ) : 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 SQLSetDescFieldNative = Int16 Function(Pointer<Void>, Int16, Int16, Pointer<Void>, Int32);
typedef SQLSetDescFieldDart = int Function(Pointer<Void>, int, int, Pointer<Void>, int);
final SQLSetDescField = DynamicLibrary.open('ODBC32.dll')
    .lookupFunction<SQLSetDescFieldNative, SQLSetDescFieldDart>('SQLSetDescField');
// DescriptorHandle : void* in/out -> Pointer<Void>
// RecNumber : SHORT -> Int16
// FieldIdentifier : SHORT -> Int16
// Value : void* -> Pointer<Void>
// BufferLength : INT -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SQLSetDescField(
  DescriptorHandle: Pointer;   // void* in/out
  RecNumber: Smallint;   // SHORT
  FieldIdentifier: Smallint;   // SHORT
  Value: Pointer;   // void*
  BufferLength: Integer   // INT
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLSetDescField';

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

foreign import stdcall safe "SQLSetDescField"
  c_SQLSetDescField :: Ptr () -> Int16 -> Int16 -> Ptr () -> Int32 -> IO Int16
-- DescriptorHandle : void* in/out -> Ptr ()
-- RecNumber : SHORT -> Int16
-- FieldIdentifier : SHORT -> Int16
-- Value : void* -> Ptr ()
-- BufferLength : INT -> Int32
-- 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 sqlsetdescfield =
  foreign "SQLSetDescField"
    ((ptr void) @-> int16_t @-> int16_t @-> (ptr void) @-> int32_t @-> returning int16_t)
(* DescriptorHandle : void* in/out -> (ptr void) *)
(* RecNumber : SHORT -> int16_t *)
(* FieldIdentifier : SHORT -> int16_t *)
(* Value : void* -> (ptr void) *)
(* BufferLength : INT -> int32_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 ("SQLSetDescField" sqlset-desc-field :convention :stdcall) :int16
  (descriptor-handle :pointer)   ; void* in/out
  (rec-number :int16)   ; SHORT
  (field-identifier :int16)   ; SHORT
  (value :pointer)   ; void*
  (buffer-length :int32))   ; INT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

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