SQLPrepareW

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

SHORT SQLPrepareW(
    void* hstmt,
    WORD* szSqlStr,
    INT cchSqlStr
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SQLPrepareW(
    hstmt As IntPtr,   ' void* in/out
    ByRef szSqlStr As UShort,   ' WORD*
    cchSqlStr As Integer   ' INT
) As Short
End Function

' hstmt : void* in/out
' szSqlStr : WORD*
' cchSqlStr : INT
Declare PtrSafe Function SQLPrepareW Lib "odbc32" ( _
    ByVal hstmt As LongPtr, _
    ByRef szSqlStr As Integer, _
    ByVal cchSqlStr 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

SQLPrepareW = ctypes.windll.odbc32.SQLPrepareW
SQLPrepareW.restype = ctypes.c_short
SQLPrepareW.argtypes = [
    ctypes.POINTER(None),  # hstmt : void* in/out
    ctypes.POINTER(ctypes.c_ushort),  # szSqlStr : WORD*
    ctypes.c_int,  # cchSqlStr : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLPrepareW = Fiddle::Function.new(
  lib['SQLPrepareW'],
  [
    Fiddle::TYPE_VOIDP,  # hstmt : void* in/out
    Fiddle::TYPE_VOIDP,  # szSqlStr : WORD*
    Fiddle::TYPE_INT,  # cchSqlStr : INT
  ],
  Fiddle::TYPE_SHORT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "odbc32")]
extern "system" {
    fn SQLPrepareW(
        hstmt: *mut (),  // void* in/out
        szSqlStr: *mut u16,  // WORD*
        cchSqlStr: i32  // INT
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Unicode)]
public static extern short SQLPrepareW(IntPtr hstmt, ref ushort szSqlStr, int cchSqlStr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLPrepareW' -Namespace Win32 -PassThru
# $api::SQLPrepareW(hstmt, szSqlStr, cchSqlStr)

#uselib "ODBC32.dll"
#func global SQLPrepareW "SQLPrepareW" wptr, wptr, wptr
; SQLPrepareW hstmt, varptr(szSqlStr), cchSqlStr   ; 戻り値は stat
; hstmt : void* in/out -> "wptr"
; szSqlStr : WORD* -> "wptr"
; cchSqlStr : 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 SQLPrepareW "SQLPrepareW" sptr, var, int
; res = SQLPrepareW(hstmt, szSqlStr, cchSqlStr)
; hstmt : void* in/out -> "sptr"
; szSqlStr : WORD* -> "var"
; cchSqlStr : INT -> "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 SQLPrepareW(void* hstmt, WORD* szSqlStr, INT cchSqlStr)
#uselib "ODBC32.dll"
#cfunc global SQLPrepareW "SQLPrepareW" intptr, var, int
; res = SQLPrepareW(hstmt, szSqlStr, cchSqlStr)
; hstmt : void* in/out -> "intptr"
; szSqlStr : WORD* -> "var"
; cchSqlStr : INT -> "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。

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

var (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLPrepareW = odbc32.NewProc("SQLPrepareW")
)

// hstmt (void* in/out), szSqlStr (WORD*), cchSqlStr (INT)
r1, _, err := procSQLPrepareW.Call(
	uintptr(hstmt),
	uintptr(szSqlStr),
	uintptr(cchSqlStr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLPrepareW(
  hstmt: Pointer;   // void* in/out
  szSqlStr: Pointer;   // WORD*
  cchSqlStr: Integer   // INT
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLPrepareW';

result := DllCall("ODBC32\SQLPrepareW"
    , "Ptr", hstmt   ; void* in/out
    , "Ptr", szSqlStr   ; WORD*
    , "Int", cchSqlStr   ; INT
    , "Short")   ; return: SHORT

●SQLPrepareW(hstmt, szSqlStr, cchSqlStr) = DLL("ODBC32.dll", "int SQLPrepareW(void*, void*, int)")
# 呼び出し: SQLPrepareW(hstmt, szSqlStr, cchSqlStr)
# hstmt : void* in/out -> "void*"
# szSqlStr : WORD* -> "void*"
# cchSqlStr : 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。