GopherGetAttributeW

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

BOOL GopherGetAttributeW(
    void* hConnect,
    LPCWSTR lpszLocator,
    LPCWSTR lpszAttributeName,   // optional
    BYTE* lpBuffer,
    DWORD dwBufferLength,
    DWORD* lpdwCharactersReturned,
    GOPHER_ATTRIBUTE_ENUMERATOR lpfnEnumerator,   // optional
    UINT_PTR dwContext   // optional
);

<DllImport("WININET.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GopherGetAttributeW(
    hConnect As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> lpszLocator As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpszAttributeName As String,   ' LPCWSTR optional
    lpBuffer As IntPtr,   ' BYTE* out
    dwBufferLength As UInteger,   ' DWORD
    <Out> ByRef lpdwCharactersReturned As UInteger,   ' DWORD* out
    lpfnEnumerator As IntPtr,   ' GOPHER_ATTRIBUTE_ENUMERATOR optional
    dwContext As UIntPtr   ' UINT_PTR optional
) As Boolean
End Function

' hConnect : void*
' lpszLocator : LPCWSTR
' lpszAttributeName : LPCWSTR optional
' lpBuffer : BYTE* out
' dwBufferLength : DWORD
' lpdwCharactersReturned : DWORD* out
' lpfnEnumerator : GOPHER_ATTRIBUTE_ENUMERATOR optional
' dwContext : UINT_PTR optional
Declare PtrSafe Function GopherGetAttributeW Lib "wininet" ( _
    ByVal hConnect As LongPtr, _
    ByVal lpszLocator As LongPtr, _
    ByVal lpszAttributeName As LongPtr, _
    ByVal lpBuffer As LongPtr, _
    ByVal dwBufferLength As Long, _
    ByRef lpdwCharactersReturned As Long, _
    ByVal lpfnEnumerator As LongPtr, _
    ByVal dwContext 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

GopherGetAttributeW = ctypes.windll.wininet.GopherGetAttributeW
GopherGetAttributeW.restype = wintypes.BOOL
GopherGetAttributeW.argtypes = [
    ctypes.POINTER(None),  # hConnect : void*
    wintypes.LPCWSTR,  # lpszLocator : LPCWSTR
    wintypes.LPCWSTR,  # lpszAttributeName : LPCWSTR optional
    ctypes.POINTER(ctypes.c_ubyte),  # lpBuffer : BYTE* out
    wintypes.DWORD,  # dwBufferLength : DWORD
    ctypes.POINTER(wintypes.DWORD),  # lpdwCharactersReturned : DWORD* out
    ctypes.c_void_p,  # lpfnEnumerator : GOPHER_ATTRIBUTE_ENUMERATOR optional
    ctypes.c_size_t,  # dwContext : UINT_PTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
GopherGetAttributeW = Fiddle::Function.new(
  lib['GopherGetAttributeW'],
  [
    Fiddle::TYPE_VOIDP,  # hConnect : void*
    Fiddle::TYPE_VOIDP,  # lpszLocator : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpszAttributeName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpBuffer : BYTE* out
    -Fiddle::TYPE_INT,  # dwBufferLength : DWORD
    Fiddle::TYPE_VOIDP,  # lpdwCharactersReturned : DWORD* out
    Fiddle::TYPE_VOIDP,  # lpfnEnumerator : GOPHER_ATTRIBUTE_ENUMERATOR optional
    Fiddle::TYPE_UINTPTR_T,  # dwContext : UINT_PTR optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wininet")]
extern "system" {
    fn GopherGetAttributeW(
        hConnect: *mut (),  // void*
        lpszLocator: *const u16,  // LPCWSTR
        lpszAttributeName: *const u16,  // LPCWSTR optional
        lpBuffer: *mut u8,  // BYTE* out
        dwBufferLength: u32,  // DWORD
        lpdwCharactersReturned: *mut u32,  // DWORD* out
        lpfnEnumerator: *const core::ffi::c_void,  // GOPHER_ATTRIBUTE_ENUMERATOR optional
        dwContext: usize  // UINT_PTR optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WININET.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool GopherGetAttributeW(IntPtr hConnect, [MarshalAs(UnmanagedType.LPWStr)] string lpszLocator, [MarshalAs(UnmanagedType.LPWStr)] string lpszAttributeName, IntPtr lpBuffer, uint dwBufferLength, out uint lpdwCharactersReturned, IntPtr lpfnEnumerator, UIntPtr dwContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_GopherGetAttributeW' -Namespace Win32 -PassThru
# $api::GopherGetAttributeW(hConnect, lpszLocator, lpszAttributeName, lpBuffer, dwBufferLength, lpdwCharactersReturned, lpfnEnumerator, dwContext)

#uselib "WININET.dll"
#func global GopherGetAttributeW "GopherGetAttributeW" wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr
; GopherGetAttributeW hConnect, lpszLocator, lpszAttributeName, varptr(lpBuffer), dwBufferLength, varptr(lpdwCharactersReturned), lpfnEnumerator, dwContext   ; 戻り値は stat
; hConnect : void* -> "wptr"
; lpszLocator : LPCWSTR -> "wptr"
; lpszAttributeName : LPCWSTR optional -> "wptr"
; lpBuffer : BYTE* out -> "wptr"
; dwBufferLength : DWORD -> "wptr"
; lpdwCharactersReturned : DWORD* out -> "wptr"
; lpfnEnumerator : GOPHER_ATTRIBUTE_ENUMERATOR optional -> "wptr"
; dwContext : UINT_PTR 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 "WININET.dll"
#cfunc global GopherGetAttributeW "GopherGetAttributeW" sptr, wstr, wstr, var, int, var, sptr, sptr
; res = GopherGetAttributeW(hConnect, lpszLocator, lpszAttributeName, lpBuffer, dwBufferLength, lpdwCharactersReturned, lpfnEnumerator, dwContext)
; hConnect : void* -> "sptr"
; lpszLocator : LPCWSTR -> "wstr"
; lpszAttributeName : LPCWSTR optional -> "wstr"
; lpBuffer : BYTE* out -> "var"
; dwBufferLength : DWORD -> "int"
; lpdwCharactersReturned : DWORD* out -> "var"
; lpfnEnumerator : GOPHER_ATTRIBUTE_ENUMERATOR optional -> "sptr"
; dwContext : UINT_PTR optional -> "sptr"
; ※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 GopherGetAttributeW(void* hConnect, LPCWSTR lpszLocator, LPCWSTR lpszAttributeName, BYTE* lpBuffer, DWORD dwBufferLength, DWORD* lpdwCharactersReturned, GOPHER_ATTRIBUTE_ENUMERATOR lpfnEnumerator, UINT_PTR dwContext)
#uselib "WININET.dll"
#cfunc global GopherGetAttributeW "GopherGetAttributeW" intptr, wstr, wstr, var, int, var, intptr, intptr
; res = GopherGetAttributeW(hConnect, lpszLocator, lpszAttributeName, lpBuffer, dwBufferLength, lpdwCharactersReturned, lpfnEnumerator, dwContext)
; hConnect : void* -> "intptr"
; lpszLocator : LPCWSTR -> "wstr"
; lpszAttributeName : LPCWSTR optional -> "wstr"
; lpBuffer : BYTE* out -> "var"
; dwBufferLength : DWORD -> "int"
; lpdwCharactersReturned : DWORD* out -> "var"
; lpfnEnumerator : GOPHER_ATTRIBUTE_ENUMERATOR optional -> "intptr"
; dwContext : UINT_PTR optional -> "intptr"
; ※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 (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procGopherGetAttributeW = wininet.NewProc("GopherGetAttributeW")
)

// hConnect (void*), lpszLocator (LPCWSTR), lpszAttributeName (LPCWSTR optional), lpBuffer (BYTE* out), dwBufferLength (DWORD), lpdwCharactersReturned (DWORD* out), lpfnEnumerator (GOPHER_ATTRIBUTE_ENUMERATOR optional), dwContext (UINT_PTR optional)
r1, _, err := procGopherGetAttributeW.Call(
	uintptr(hConnect),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszLocator))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszAttributeName))),
	uintptr(lpBuffer),
	uintptr(dwBufferLength),
	uintptr(lpdwCharactersReturned),
	uintptr(lpfnEnumerator),
	uintptr(dwContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GopherGetAttributeW(
  hConnect: Pointer;   // void*
  lpszLocator: PWideChar;   // LPCWSTR
  lpszAttributeName: PWideChar;   // LPCWSTR optional
  lpBuffer: Pointer;   // BYTE* out
  dwBufferLength: DWORD;   // DWORD
  lpdwCharactersReturned: Pointer;   // DWORD* out
  lpfnEnumerator: Pointer;   // GOPHER_ATTRIBUTE_ENUMERATOR optional
  dwContext: NativeUInt   // UINT_PTR optional
): BOOL; stdcall;
  external 'WININET.dll' name 'GopherGetAttributeW';

result := DllCall("WININET\GopherGetAttributeW"
    , "Ptr", hConnect   ; void*
    , "WStr", lpszLocator   ; LPCWSTR
    , "WStr", lpszAttributeName   ; LPCWSTR optional
    , "Ptr", lpBuffer   ; BYTE* out
    , "UInt", dwBufferLength   ; DWORD
    , "Ptr", lpdwCharactersReturned   ; DWORD* out
    , "Ptr", lpfnEnumerator   ; GOPHER_ATTRIBUTE_ENUMERATOR optional
    , "UPtr", dwContext   ; UINT_PTR optional
    , "Int")   ; return: BOOL

●GopherGetAttributeW(hConnect, lpszLocator, lpszAttributeName, lpBuffer, dwBufferLength, lpdwCharactersReturned, lpfnEnumerator, dwContext) = DLL("WININET.dll", "bool GopherGetAttributeW(void*, char*, char*, void*, dword, void*, void*, int)")
# 呼び出し: GopherGetAttributeW(hConnect, lpszLocator, lpszAttributeName, lpBuffer, dwBufferLength, lpdwCharactersReturned, lpfnEnumerator, dwContext)
# hConnect : void* -> "void*"
# lpszLocator : LPCWSTR -> "char*"
# lpszAttributeName : LPCWSTR optional -> "char*"
# lpBuffer : BYTE* out -> "void*"
# dwBufferLength : DWORD -> "dword"
# lpdwCharactersReturned : DWORD* out -> "void*"
# lpfnEnumerator : GOPHER_ATTRIBUTE_ENUMERATOR optional -> "void*"
# dwContext : UINT_PTR optional -> "int"
# 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。