lstrcmpW

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

INT lstrcmpW(
    LPCWSTR lpString1,
    LPCWSTR lpString2
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function lstrcmpW(
    <MarshalAs(UnmanagedType.LPWStr)> lpString1 As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpString2 As String   ' LPCWSTR
) As Integer
End Function

' lpString1 : LPCWSTR
' lpString2 : LPCWSTR
Declare PtrSafe Function lstrcmpW Lib "kernel32" ( _
    ByVal lpString1 As LongPtr, _
    ByVal lpString2 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

lstrcmpW = ctypes.windll.kernel32.lstrcmpW
lstrcmpW.restype = ctypes.c_int
lstrcmpW.argtypes = [
    wintypes.LPCWSTR,  # lpString1 : LPCWSTR
    wintypes.LPCWSTR,  # lpString2 : LPCWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
lstrcmpW = Fiddle::Function.new(
  lib['lstrcmpW'],
  [
    Fiddle::TYPE_VOIDP,  # lpString1 : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpString2 : LPCWSTR
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "kernel32")]
extern "system" {
    fn lstrcmpW(
        lpString1: *const u16,  // LPCWSTR
        lpString2: *const u16  // LPCWSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode)]
public static extern int lstrcmpW([MarshalAs(UnmanagedType.LPWStr)] string lpString1, [MarshalAs(UnmanagedType.LPWStr)] string lpString2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_lstrcmpW' -Namespace Win32 -PassThru
# $api::lstrcmpW(lpString1, lpString2)

#uselib "KERNEL32.dll"
#func global lstrcmpW "lstrcmpW" wptr, wptr
; lstrcmpW lpString1, lpString2   ; 戻り値は stat
; lpString1 : LPCWSTR -> "wptr"
; lpString2 : LPCWSTR -> "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 "KERNEL32.dll"
#cfunc global lstrcmpW "lstrcmpW" wstr, wstr
; res = lstrcmpW(lpString1, lpString2)
; lpString1 : LPCWSTR -> "wstr"
; lpString2 : LPCWSTR -> "wstr"

; INT lstrcmpW(LPCWSTR lpString1, LPCWSTR lpString2)
#uselib "KERNEL32.dll"
#cfunc global lstrcmpW "lstrcmpW" wstr, wstr
; res = lstrcmpW(lpString1, lpString2)
; lpString1 : LPCWSTR -> "wstr"
; lpString2 : LPCWSTR -> "wstr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	proclstrcmpW = kernel32.NewProc("lstrcmpW")
)

// lpString1 (LPCWSTR), lpString2 (LPCWSTR)
r1, _, err := proclstrcmpW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpString1))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpString2))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function lstrcmpW(
  lpString1: PWideChar;   // LPCWSTR
  lpString2: PWideChar   // LPCWSTR
): Integer; stdcall;
  external 'KERNEL32.dll' name 'lstrcmpW';

result := DllCall("KERNEL32\lstrcmpW"
    , "WStr", lpString1   ; LPCWSTR
    , "WStr", lpString2   ; LPCWSTR
    , "Int")   ; return: INT

●lstrcmpW(lpString1, lpString2) = DLL("KERNEL32.dll", "int lstrcmpW(char*, char*)")
# 呼び出し: lstrcmpW(lpString1, lpString2)
# lpString1 : LPCWSTR -> "char*"
# lpString2 : LPCWSTR -> "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。