DdeQueryStringW

// USER32.dll  (Unicode / -W)
#include <windows.h>

DWORD DdeQueryStringW(
    DWORD idInst,
    HSZ hsz,
    LPWSTR psz,   // optional
    DWORD cchMax,
    INT iCodePage
);

<DllImport("USER32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function DdeQueryStringW(
    idInst As UInteger,   ' DWORD
    hsz As IntPtr,   ' HSZ
    <MarshalAs(UnmanagedType.LPWStr)> psz As System.Text.StringBuilder,   ' LPWSTR optional, out
    cchMax As UInteger,   ' DWORD
    iCodePage As Integer   ' INT
) As UInteger
End Function

' idInst : DWORD
' hsz : HSZ
' psz : LPWSTR optional, out
' cchMax : DWORD
' iCodePage : INT
Declare PtrSafe Function DdeQueryStringW Lib "user32" ( _
    ByVal idInst As Long, _
    ByVal hsz As LongPtr, _
    ByVal psz As LongPtr, _
    ByVal cchMax As Long, _
    ByVal iCodePage As Long) As Long
' 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

DdeQueryStringW = ctypes.windll.user32.DdeQueryStringW
DdeQueryStringW.restype = wintypes.DWORD
DdeQueryStringW.argtypes = [
    wintypes.DWORD,  # idInst : DWORD
    wintypes.HANDLE,  # hsz : HSZ
    wintypes.LPWSTR,  # psz : LPWSTR optional, out
    wintypes.DWORD,  # cchMax : DWORD
    ctypes.c_int,  # iCodePage : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DdeQueryStringW = Fiddle::Function.new(
  lib['DdeQueryStringW'],
  [
    -Fiddle::TYPE_INT,  # idInst : DWORD
    Fiddle::TYPE_VOIDP,  # hsz : HSZ
    Fiddle::TYPE_VOIDP,  # psz : LPWSTR optional, out
    -Fiddle::TYPE_INT,  # cchMax : DWORD
    Fiddle::TYPE_INT,  # iCodePage : INT
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "user32")]
extern "system" {
    fn DdeQueryStringW(
        idInst: u32,  // DWORD
        hsz: *mut core::ffi::c_void,  // HSZ
        psz: *mut u16,  // LPWSTR optional, out
        cchMax: u32,  // DWORD
        iCodePage: i32  // INT
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", CharSet = CharSet.Unicode)]
public static extern uint DdeQueryStringW(uint idInst, IntPtr hsz, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder psz, uint cchMax, int iCodePage);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DdeQueryStringW' -Namespace Win32 -PassThru
# $api::DdeQueryStringW(idInst, hsz, psz, cchMax, iCodePage)

#uselib "USER32.dll"
#func global DdeQueryStringW "DdeQueryStringW" wptr, wptr, wptr, wptr, wptr
; DdeQueryStringW idInst, hsz, varptr(psz), cchMax, iCodePage   ; 戻り値は stat
; idInst : DWORD -> "wptr"
; hsz : HSZ -> "wptr"
; psz : LPWSTR optional, out -> "wptr"
; cchMax : DWORD -> "wptr"
; iCodePage : 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 "USER32.dll"
#cfunc global DdeQueryStringW "DdeQueryStringW" int, sptr, var, int, int
; res = DdeQueryStringW(idInst, hsz, psz, cchMax, iCodePage)
; idInst : DWORD -> "int"
; hsz : HSZ -> "sptr"
; psz : LPWSTR optional, out -> "var"
; cchMax : DWORD -> "int"
; iCodePage : 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。

; DWORD DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
#uselib "USER32.dll"
#cfunc global DdeQueryStringW "DdeQueryStringW" int, intptr, var, int, int
; res = DdeQueryStringW(idInst, hsz, psz, cchMax, iCodePage)
; idInst : DWORD -> "int"
; hsz : HSZ -> "intptr"
; psz : LPWSTR optional, out -> "var"
; cchMax : DWORD -> "int"
; iCodePage : 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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDdeQueryStringW = user32.NewProc("DdeQueryStringW")
)

// idInst (DWORD), hsz (HSZ), psz (LPWSTR optional, out), cchMax (DWORD), iCodePage (INT)
r1, _, err := procDdeQueryStringW.Call(
	uintptr(idInst),
	uintptr(hsz),
	uintptr(psz),
	uintptr(cchMax),
	uintptr(iCodePage),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DdeQueryStringW(
  idInst: DWORD;   // DWORD
  hsz: THandle;   // HSZ
  psz: PWideChar;   // LPWSTR optional, out
  cchMax: DWORD;   // DWORD
  iCodePage: Integer   // INT
): DWORD; stdcall;
  external 'USER32.dll' name 'DdeQueryStringW';

result := DllCall("USER32\DdeQueryStringW"
    , "UInt", idInst   ; DWORD
    , "Ptr", hsz   ; HSZ
    , "Ptr", psz   ; LPWSTR optional, out
    , "UInt", cchMax   ; DWORD
    , "Int", iCodePage   ; INT
    , "UInt")   ; return: DWORD

●DdeQueryStringW(idInst, hsz, psz, cchMax, iCodePage) = DLL("USER32.dll", "dword DdeQueryStringW(dword, void*, char*, dword, int)")
# 呼び出し: DdeQueryStringW(idInst, hsz, psz, cchMax, iCodePage)
# idInst : DWORD -> "dword"
# hsz : HSZ -> "void*"
# psz : LPWSTR optional, out -> "char*"
# cchMax : DWORD -> "dword"
# iCodePage : 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。