WTSOpenServerExW

// WTSAPI32.dll  (Unicode / -W)
#include <windows.h>

HANDLE WTSOpenServerExW(
    LPWSTR pServerName
);

<DllImport("WTSAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function WTSOpenServerExW(
    <MarshalAs(UnmanagedType.LPWStr)> pServerName As String   ' LPWSTR
) As IntPtr
End Function

' pServerName : LPWSTR
Declare PtrSafe Function WTSOpenServerExW Lib "wtsapi32" ( _
    ByVal pServerName As LongPtr) As LongPtr
' 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

WTSOpenServerExW = ctypes.windll.wtsapi32.WTSOpenServerExW
WTSOpenServerExW.restype = ctypes.c_void_p
WTSOpenServerExW.argtypes = [
    wintypes.LPCWSTR,  # pServerName : LPWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WTSAPI32.dll')
WTSOpenServerExW = Fiddle::Function.new(
  lib['WTSOpenServerExW'],
  [
    Fiddle::TYPE_VOIDP,  # pServerName : LPWSTR
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wtsapi32")]
extern "system" {
    fn WTSOpenServerExW(
        pServerName: *mut u16  // LPWSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WTSAPI32.dll", CharSet = CharSet.Unicode)]
public static extern IntPtr WTSOpenServerExW([MarshalAs(UnmanagedType.LPWStr)] string pServerName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WTSAPI32_WTSOpenServerExW' -Namespace Win32 -PassThru
# $api::WTSOpenServerExW(pServerName)

#uselib "WTSAPI32.dll"
#func global WTSOpenServerExW "WTSOpenServerExW" wptr
; WTSOpenServerExW pServerName   ; 戻り値は stat
; pServerName : LPWSTR -> "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 "WTSAPI32.dll"
#cfunc global WTSOpenServerExW "WTSOpenServerExW" wstr
; res = WTSOpenServerExW(pServerName)
; pServerName : LPWSTR -> "wstr"

; HANDLE WTSOpenServerExW(LPWSTR pServerName)
#uselib "WTSAPI32.dll"
#cfunc global WTSOpenServerExW "WTSOpenServerExW" wstr
; res = WTSOpenServerExW(pServerName)
; pServerName : LPWSTR -> "wstr"

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

var (
	wtsapi32 = windows.NewLazySystemDLL("WTSAPI32.dll")
	procWTSOpenServerExW = wtsapi32.NewProc("WTSOpenServerExW")
)

// pServerName (LPWSTR)
r1, _, err := procWTSOpenServerExW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pServerName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function WTSOpenServerExW(
  pServerName: PWideChar   // LPWSTR
): THandle; stdcall;
  external 'WTSAPI32.dll' name 'WTSOpenServerExW';

result := DllCall("WTSAPI32\WTSOpenServerExW"
    , "WStr", pServerName   ; LPWSTR
    , "Ptr")   ; return: HANDLE

●WTSOpenServerExW(pServerName) = DLL("WTSAPI32.dll", "void* WTSOpenServerExW(char*)")
# 呼び出し: WTSOpenServerExW(pServerName)
# pServerName : LPWSTR -> "char*"
# 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。