LoadCursorFromFileW

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

HCURSOR LoadCursorFromFileW(
    LPCWSTR lpFileName
);

<DllImport("USER32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function LoadCursorFromFileW(
    <MarshalAs(UnmanagedType.LPWStr)> lpFileName As String   ' LPCWSTR
) As IntPtr
End Function

' lpFileName : LPCWSTR
Declare PtrSafe Function LoadCursorFromFileW Lib "user32" ( _
    ByVal lpFileName 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

LoadCursorFromFileW = ctypes.windll.user32.LoadCursorFromFileW
LoadCursorFromFileW.restype = ctypes.c_void_p
LoadCursorFromFileW.argtypes = [
    wintypes.LPCWSTR,  # lpFileName : LPCWSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
LoadCursorFromFileW = Fiddle::Function.new(
  lib['LoadCursorFromFileW'],
  [
    Fiddle::TYPE_VOIDP,  # lpFileName : LPCWSTR
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "user32")]
extern "system" {
    fn LoadCursorFromFileW(
        lpFileName: *const u16  // LPCWSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr LoadCursorFromFileW([MarshalAs(UnmanagedType.LPWStr)] string lpFileName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_LoadCursorFromFileW' -Namespace Win32 -PassThru
# $api::LoadCursorFromFileW(lpFileName)

#uselib "USER32.dll"
#func global LoadCursorFromFileW "LoadCursorFromFileW" wptr
; LoadCursorFromFileW lpFileName   ; 戻り値は stat
; lpFileName : 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 "USER32.dll"
#cfunc global LoadCursorFromFileW "LoadCursorFromFileW" wstr
; res = LoadCursorFromFileW(lpFileName)
; lpFileName : LPCWSTR -> "wstr"

; HCURSOR LoadCursorFromFileW(LPCWSTR lpFileName)
#uselib "USER32.dll"
#cfunc global LoadCursorFromFileW "LoadCursorFromFileW" wstr
; res = LoadCursorFromFileW(lpFileName)
; lpFileName : LPCWSTR -> "wstr"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procLoadCursorFromFileW = user32.NewProc("LoadCursorFromFileW")
)

// lpFileName (LPCWSTR)
r1, _, err := procLoadCursorFromFileW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFileName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HCURSOR

function LoadCursorFromFileW(
  lpFileName: PWideChar   // LPCWSTR
): THandle; stdcall;
  external 'USER32.dll' name 'LoadCursorFromFileW';

result := DllCall("USER32\LoadCursorFromFileW"
    , "WStr", lpFileName   ; LPCWSTR
    , "Ptr")   ; return: HCURSOR

●LoadCursorFromFileW(lpFileName) = DLL("USER32.dll", "void* LoadCursorFromFileW(char*)")
# 呼び出し: LoadCursorFromFileW(lpFileName)
# lpFileName : 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。