AddMonitorW

// winspool.drv  (Unicode / -W)
#include <windows.h>

BOOL AddMonitorW(
    LPCWSTR pName,   // optional
    DWORD Level,
    BYTE* pMonitors   // optional
);

<DllImport("winspool.drv", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function AddMonitorW(
    <MarshalAs(UnmanagedType.LPWStr)> pName As String,   ' LPCWSTR optional
    Level As UInteger,   ' DWORD
    pMonitors As IntPtr   ' BYTE* optional
) As Boolean
End Function

' pName : LPCWSTR optional
' Level : DWORD
' pMonitors : BYTE* optional
Declare PtrSafe Function AddMonitorW Lib "winspool.drv" ( _
    ByVal pName As LongPtr, _
    ByVal Level As Long, _
    ByVal pMonitors As LongPtr) 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

AddMonitorW = ctypes.windll.LoadLibrary("winspool.drv").AddMonitorW
AddMonitorW.restype = wintypes.BOOL
AddMonitorW.argtypes = [
    wintypes.LPCWSTR,  # pName : LPCWSTR optional
    wintypes.DWORD,  # Level : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pMonitors : BYTE* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
AddMonitorW = Fiddle::Function.new(
  lib['AddMonitorW'],
  [
    Fiddle::TYPE_VOIDP,  # pName : LPCWSTR optional
    -Fiddle::TYPE_INT,  # Level : DWORD
    Fiddle::TYPE_VOIDP,  # pMonitors : BYTE* optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winspool.drv")]
extern "system" {
    fn AddMonitorW(
        pName: *const u16,  // LPCWSTR optional
        Level: u32,  // DWORD
        pMonitors: *mut u8  // BYTE* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("winspool.drv", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool AddMonitorW([MarshalAs(UnmanagedType.LPWStr)] string pName, uint Level, IntPtr pMonitors);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_AddMonitorW' -Namespace Win32 -PassThru
# $api::AddMonitorW(pName, Level, pMonitors)

#uselib "winspool.drv"
#func global AddMonitorW "AddMonitorW" wptr, wptr, wptr
; AddMonitorW pName, Level, varptr(pMonitors)   ; 戻り値は stat
; pName : LPCWSTR optional -> "wptr"
; Level : DWORD -> "wptr"
; pMonitors : BYTE* optional -> "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 "winspool.drv"
#cfunc global AddMonitorW "AddMonitorW" wstr, int, var
; res = AddMonitorW(pName, Level, pMonitors)
; pName : LPCWSTR optional -> "wstr"
; Level : DWORD -> "int"
; pMonitors : BYTE* optional -> "var"
; ※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。

; BOOL AddMonitorW(LPCWSTR pName, DWORD Level, BYTE* pMonitors)
#uselib "winspool.drv"
#cfunc global AddMonitorW "AddMonitorW" wstr, int, var
; res = AddMonitorW(pName, Level, pMonitors)
; pName : LPCWSTR optional -> "wstr"
; Level : DWORD -> "int"
; pMonitors : BYTE* optional -> "var"
; ※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 (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procAddMonitorW = winspool_drv.NewProc("AddMonitorW")
)

// pName (LPCWSTR optional), Level (DWORD), pMonitors (BYTE* optional)
r1, _, err := procAddMonitorW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pName))),
	uintptr(Level),
	uintptr(pMonitors),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function AddMonitorW(
  pName: PWideChar;   // LPCWSTR optional
  Level: DWORD;   // DWORD
  pMonitors: Pointer   // BYTE* optional
): BOOL; stdcall;
  external 'winspool.drv' name 'AddMonitorW';

result := DllCall("winspool.drv\AddMonitorW"
    , "WStr", pName   ; LPCWSTR optional
    , "UInt", Level   ; DWORD
    , "Ptr", pMonitors   ; BYTE* optional
    , "Int")   ; return: BOOL

●AddMonitorW(pName, Level, pMonitors) = DLL("winspool.drv", "bool AddMonitorW(char*, dword, void*)")
# 呼び出し: AddMonitorW(pName, Level, pMonitors)
# pName : LPCWSTR optional -> "char*"
# Level : DWORD -> "dword"
# pMonitors : BYTE* optional -> "void*"
# 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。