SQLSetConnectAttrW

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

SHORT SQLSetConnectAttrW(
    void* hdbc,
    INT fAttribute,
    void* rgbValue,   // optional
    INT cbValue
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SQLSetConnectAttrW(
    hdbc As IntPtr,   ' void* in/out
    fAttribute As Integer,   ' INT
    rgbValue As IntPtr,   ' void* optional
    cbValue As Integer   ' INT
) As Short
End Function

' hdbc : void* in/out
' fAttribute : INT
' rgbValue : void* optional
' cbValue : INT
Declare PtrSafe Function SQLSetConnectAttrW Lib "odbc32" ( _
    ByVal hdbc As LongPtr, _
    ByVal fAttribute As Long, _
    ByVal rgbValue As LongPtr, _
    ByVal cbValue As Long) 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

SQLSetConnectAttrW = ctypes.windll.odbc32.SQLSetConnectAttrW
SQLSetConnectAttrW.restype = ctypes.c_short
SQLSetConnectAttrW.argtypes = [
    ctypes.POINTER(None),  # hdbc : void* in/out
    ctypes.c_int,  # fAttribute : INT
    ctypes.POINTER(None),  # rgbValue : void* optional
    ctypes.c_int,  # cbValue : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLSetConnectAttrW = Fiddle::Function.new(
  lib['SQLSetConnectAttrW'],
  [
    Fiddle::TYPE_VOIDP,  # hdbc : void* in/out
    Fiddle::TYPE_INT,  # fAttribute : INT
    Fiddle::TYPE_VOIDP,  # rgbValue : void* optional
    Fiddle::TYPE_INT,  # cbValue : INT
  ],
  Fiddle::TYPE_SHORT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "odbc32")]
extern "system" {
    fn SQLSetConnectAttrW(
        hdbc: *mut (),  // void* in/out
        fAttribute: i32,  // INT
        rgbValue: *mut (),  // void* optional
        cbValue: i32  // INT
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Unicode)]
public static extern short SQLSetConnectAttrW(IntPtr hdbc, int fAttribute, IntPtr rgbValue, int cbValue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLSetConnectAttrW' -Namespace Win32 -PassThru
# $api::SQLSetConnectAttrW(hdbc, fAttribute, rgbValue, cbValue)

#uselib "ODBC32.dll"
#func global SQLSetConnectAttrW "SQLSetConnectAttrW" wptr, wptr, wptr, wptr
; SQLSetConnectAttrW hdbc, fAttribute, rgbValue, cbValue   ; 戻り値は stat
; hdbc : void* in/out -> "wptr"
; fAttribute : INT -> "wptr"
; rgbValue : void* optional -> "wptr"
; cbValue : INT -> "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。

#uselib "ODBC32.dll"
#cfunc global SQLSetConnectAttrW "SQLSetConnectAttrW" sptr, int, sptr, int
; res = SQLSetConnectAttrW(hdbc, fAttribute, rgbValue, cbValue)
; hdbc : void* in/out -> "sptr"
; fAttribute : INT -> "int"
; rgbValue : void* optional -> "sptr"
; cbValue : INT -> "int"

; SHORT SQLSetConnectAttrW(void* hdbc, INT fAttribute, void* rgbValue, INT cbValue)
#uselib "ODBC32.dll"
#cfunc global SQLSetConnectAttrW "SQLSetConnectAttrW" intptr, int, intptr, int
; res = SQLSetConnectAttrW(hdbc, fAttribute, rgbValue, cbValue)
; hdbc : void* in/out -> "intptr"
; fAttribute : INT -> "int"
; rgbValue : void* optional -> "intptr"
; cbValue : INT -> "int"

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

var (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLSetConnectAttrW = odbc32.NewProc("SQLSetConnectAttrW")
)

// hdbc (void* in/out), fAttribute (INT), rgbValue (void* optional), cbValue (INT)
r1, _, err := procSQLSetConnectAttrW.Call(
	uintptr(hdbc),
	uintptr(fAttribute),
	uintptr(rgbValue),
	uintptr(cbValue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLSetConnectAttrW(
  hdbc: Pointer;   // void* in/out
  fAttribute: Integer;   // INT
  rgbValue: Pointer;   // void* optional
  cbValue: Integer   // INT
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLSetConnectAttrW';

result := DllCall("ODBC32\SQLSetConnectAttrW"
    , "Ptr", hdbc   ; void* in/out
    , "Int", fAttribute   ; INT
    , "Ptr", rgbValue   ; void* optional
    , "Int", cbValue   ; INT
    , "Short")   ; return: SHORT

●SQLSetConnectAttrW(hdbc, fAttribute, rgbValue, cbValue) = DLL("ODBC32.dll", "int SQLSetConnectAttrW(void*, int, void*, int)")
# 呼び出し: SQLSetConnectAttrW(hdbc, fAttribute, rgbValue, cbValue)
# hdbc : void* in/out -> "void*"
# fAttribute : INT -> "int"
# rgbValue : void* optional -> "void*"
# cbValue : 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。