AppCacheLookup

// WININET.dll
#include <windows.h>

DWORD AppCacheLookup(
    LPCWSTR pwszUrl,
    DWORD dwFlags,
    void** phAppCache
);

<DllImport("WININET.dll", ExactSpelling:=True)>
Public Shared Function AppCacheLookup(
    <MarshalAs(UnmanagedType.LPWStr)> pwszUrl As String,   ' LPCWSTR
    dwFlags As UInteger,   ' DWORD
    phAppCache As IntPtr   ' void** out
) As UInteger
End Function

' pwszUrl : LPCWSTR
' dwFlags : DWORD
' phAppCache : void** out
Declare PtrSafe Function AppCacheLookup Lib "wininet" ( _
    ByVal pwszUrl As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal phAppCache As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

AppCacheLookup = ctypes.windll.wininet.AppCacheLookup
AppCacheLookup.restype = wintypes.DWORD
AppCacheLookup.argtypes = [
    wintypes.LPCWSTR,  # pwszUrl : LPCWSTR
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_void_p,  # phAppCache : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
AppCacheLookup = Fiddle::Function.new(
  lib['AppCacheLookup'],
  [
    Fiddle::TYPE_VOIDP,  # pwszUrl : LPCWSTR
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # phAppCache : void** out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wininet")]
extern "system" {
    fn AppCacheLookup(
        pwszUrl: *const u16,  // LPCWSTR
        dwFlags: u32,  // DWORD
        phAppCache: *mut *mut ()  // void** out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WININET.dll")]
public static extern uint AppCacheLookup([MarshalAs(UnmanagedType.LPWStr)] string pwszUrl, uint dwFlags, IntPtr phAppCache);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_AppCacheLookup' -Namespace Win32 -PassThru
# $api::AppCacheLookup(pwszUrl, dwFlags, phAppCache)

#uselib "WININET.dll"
#func global AppCacheLookup "AppCacheLookup" sptr, sptr, sptr
; AppCacheLookup pwszUrl, dwFlags, phAppCache   ; 戻り値は stat
; pwszUrl : LPCWSTR -> "sptr"
; dwFlags : DWORD -> "sptr"
; phAppCache : void** out -> "sptr"
; ※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 AppCacheLookup "AppCacheLookup" wstr, int, sptr
; res = AppCacheLookup(pwszUrl, dwFlags, phAppCache)
; pwszUrl : LPCWSTR -> "wstr"
; dwFlags : DWORD -> "int"
; phAppCache : void** out -> "sptr"

; DWORD AppCacheLookup(LPCWSTR pwszUrl, DWORD dwFlags, void** phAppCache)
#uselib "WININET.dll"
#cfunc global AppCacheLookup "AppCacheLookup" wstr, int, intptr
; res = AppCacheLookup(pwszUrl, dwFlags, phAppCache)
; pwszUrl : LPCWSTR -> "wstr"
; dwFlags : DWORD -> "int"
; phAppCache : void** out -> "intptr"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procAppCacheLookup = wininet.NewProc("AppCacheLookup")
)

// pwszUrl (LPCWSTR), dwFlags (DWORD), phAppCache (void** out)
r1, _, err := procAppCacheLookup.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszUrl))),
	uintptr(dwFlags),
	uintptr(phAppCache),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function AppCacheLookup(
  pwszUrl: PWideChar;   // LPCWSTR
  dwFlags: DWORD;   // DWORD
  phAppCache: Pointer   // void** out
): DWORD; stdcall;
  external 'WININET.dll' name 'AppCacheLookup';

result := DllCall("WININET\AppCacheLookup"
    , "WStr", pwszUrl   ; LPCWSTR
    , "UInt", dwFlags   ; DWORD
    , "Ptr", phAppCache   ; void** out
    , "UInt")   ; return: DWORD

●AppCacheLookup(pwszUrl, dwFlags, phAppCache) = DLL("WININET.dll", "dword AppCacheLookup(char*, dword, void*)")
# 呼び出し: AppCacheLookup(pwszUrl, dwFlags, phAppCache)
# pwszUrl : LPCWSTR -> "char*"
# dwFlags : DWORD -> "dword"
# phAppCache : void** out -> "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)。