DdeNameService

// USER32.dll
#include <windows.h>

HDDEDATA DdeNameService(
    DWORD idInst,
    HSZ hsz1,   // optional
    HSZ hsz2,   // optional
    DDE_NAME_SERVICE_CMD afCmd
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function DdeNameService(
    idInst As UInteger,   ' DWORD
    hsz1 As IntPtr,   ' HSZ optional
    hsz2 As IntPtr,   ' HSZ optional
    afCmd As UInteger   ' DDE_NAME_SERVICE_CMD
) As IntPtr
End Function

' idInst : DWORD
' hsz1 : HSZ optional
' hsz2 : HSZ optional
' afCmd : DDE_NAME_SERVICE_CMD
Declare PtrSafe Function DdeNameService Lib "user32" ( _
    ByVal idInst As Long, _
    ByVal hsz1 As LongPtr, _
    ByVal hsz2 As LongPtr, _
    ByVal afCmd As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DdeNameService = ctypes.windll.user32.DdeNameService
DdeNameService.restype = ctypes.c_void_p
DdeNameService.argtypes = [
    wintypes.DWORD,  # idInst : DWORD
    wintypes.HANDLE,  # hsz1 : HSZ optional
    wintypes.HANDLE,  # hsz2 : HSZ optional
    wintypes.DWORD,  # afCmd : DDE_NAME_SERVICE_CMD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DdeNameService = Fiddle::Function.new(
  lib['DdeNameService'],
  [
    -Fiddle::TYPE_INT,  # idInst : DWORD
    Fiddle::TYPE_VOIDP,  # hsz1 : HSZ optional
    Fiddle::TYPE_VOIDP,  # hsz2 : HSZ optional
    -Fiddle::TYPE_INT,  # afCmd : DDE_NAME_SERVICE_CMD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "user32")]
extern "system" {
    fn DdeNameService(
        idInst: u32,  // DWORD
        hsz1: *mut core::ffi::c_void,  // HSZ optional
        hsz2: *mut core::ffi::c_void,  // HSZ optional
        afCmd: u32  // DDE_NAME_SERVICE_CMD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll")]
public static extern IntPtr DdeNameService(uint idInst, IntPtr hsz1, IntPtr hsz2, uint afCmd);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DdeNameService' -Namespace Win32 -PassThru
# $api::DdeNameService(idInst, hsz1, hsz2, afCmd)

#uselib "USER32.dll"
#func global DdeNameService "DdeNameService" sptr, sptr, sptr, sptr
; DdeNameService idInst, hsz1, hsz2, afCmd   ; 戻り値は stat
; idInst : DWORD -> "sptr"
; hsz1 : HSZ optional -> "sptr"
; hsz2 : HSZ optional -> "sptr"
; afCmd : DDE_NAME_SERVICE_CMD -> "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 "USER32.dll"
#cfunc global DdeNameService "DdeNameService" int, sptr, sptr, int
; res = DdeNameService(idInst, hsz1, hsz2, afCmd)
; idInst : DWORD -> "int"
; hsz1 : HSZ optional -> "sptr"
; hsz2 : HSZ optional -> "sptr"
; afCmd : DDE_NAME_SERVICE_CMD -> "int"

; HDDEDATA DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, DDE_NAME_SERVICE_CMD afCmd)
#uselib "USER32.dll"
#cfunc global DdeNameService "DdeNameService" int, intptr, intptr, int
; res = DdeNameService(idInst, hsz1, hsz2, afCmd)
; idInst : DWORD -> "int"
; hsz1 : HSZ optional -> "intptr"
; hsz2 : HSZ optional -> "intptr"
; afCmd : DDE_NAME_SERVICE_CMD -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDdeNameService = user32.NewProc("DdeNameService")
)

// idInst (DWORD), hsz1 (HSZ optional), hsz2 (HSZ optional), afCmd (DDE_NAME_SERVICE_CMD)
r1, _, err := procDdeNameService.Call(
	uintptr(idInst),
	uintptr(hsz1),
	uintptr(hsz2),
	uintptr(afCmd),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HDDEDATA

function DdeNameService(
  idInst: DWORD;   // DWORD
  hsz1: THandle;   // HSZ optional
  hsz2: THandle;   // HSZ optional
  afCmd: DWORD   // DDE_NAME_SERVICE_CMD
): THandle; stdcall;
  external 'USER32.dll' name 'DdeNameService';

result := DllCall("USER32\DdeNameService"
    , "UInt", idInst   ; DWORD
    , "Ptr", hsz1   ; HSZ optional
    , "Ptr", hsz2   ; HSZ optional
    , "UInt", afCmd   ; DDE_NAME_SERVICE_CMD
    , "Ptr")   ; return: HDDEDATA

●DdeNameService(idInst, hsz1, hsz2, afCmd) = DLL("USER32.dll", "void* DdeNameService(dword, void*, void*, dword)")
# 呼び出し: DdeNameService(idInst, hsz1, hsz2, afCmd)
# idInst : DWORD -> "dword"
# hsz1 : HSZ optional -> "void*"
# hsz2 : HSZ optional -> "void*"
# afCmd : DDE_NAME_SERVICE_CMD -> "dword"
# 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)。