AppCacheGetDownloadList

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

DWORD AppCacheGetDownloadList(
    void* hAppCache,
    APP_CACHE_DOWNLOAD_LIST* pDownloadList
);

<DllImport("WININET.dll", ExactSpelling:=True)>
Public Shared Function AppCacheGetDownloadList(
    hAppCache As IntPtr,   ' void*
    pDownloadList As IntPtr   ' APP_CACHE_DOWNLOAD_LIST* out
) As UInteger
End Function

' hAppCache : void*
' pDownloadList : APP_CACHE_DOWNLOAD_LIST* out
Declare PtrSafe Function AppCacheGetDownloadList Lib "wininet" ( _
    ByVal hAppCache As LongPtr, _
    ByVal pDownloadList 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

AppCacheGetDownloadList = ctypes.windll.wininet.AppCacheGetDownloadList
AppCacheGetDownloadList.restype = wintypes.DWORD
AppCacheGetDownloadList.argtypes = [
    ctypes.POINTER(None),  # hAppCache : void*
    ctypes.c_void_p,  # pDownloadList : APP_CACHE_DOWNLOAD_LIST* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
AppCacheGetDownloadList = Fiddle::Function.new(
  lib['AppCacheGetDownloadList'],
  [
    Fiddle::TYPE_VOIDP,  # hAppCache : void*
    Fiddle::TYPE_VOIDP,  # pDownloadList : APP_CACHE_DOWNLOAD_LIST* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wininet")]
extern "system" {
    fn AppCacheGetDownloadList(
        hAppCache: *mut (),  // void*
        pDownloadList: *mut APP_CACHE_DOWNLOAD_LIST  // APP_CACHE_DOWNLOAD_LIST* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WININET.dll")]
public static extern uint AppCacheGetDownloadList(IntPtr hAppCache, IntPtr pDownloadList);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_AppCacheGetDownloadList' -Namespace Win32 -PassThru
# $api::AppCacheGetDownloadList(hAppCache, pDownloadList)

#uselib "WININET.dll"
#func global AppCacheGetDownloadList "AppCacheGetDownloadList" sptr, sptr
; AppCacheGetDownloadList hAppCache, varptr(pDownloadList)   ; 戻り値は stat
; hAppCache : void* -> "sptr"
; pDownloadList : APP_CACHE_DOWNLOAD_LIST* 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 AppCacheGetDownloadList "AppCacheGetDownloadList" sptr, var
; res = AppCacheGetDownloadList(hAppCache, pDownloadList)
; hAppCache : void* -> "sptr"
; pDownloadList : APP_CACHE_DOWNLOAD_LIST* out -> "var"
; ※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。

; DWORD AppCacheGetDownloadList(void* hAppCache, APP_CACHE_DOWNLOAD_LIST* pDownloadList)
#uselib "WININET.dll"
#cfunc global AppCacheGetDownloadList "AppCacheGetDownloadList" intptr, var
; res = AppCacheGetDownloadList(hAppCache, pDownloadList)
; hAppCache : void* -> "intptr"
; pDownloadList : APP_CACHE_DOWNLOAD_LIST* out -> "var"
; ※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")
	procAppCacheGetDownloadList = wininet.NewProc("AppCacheGetDownloadList")
)

// hAppCache (void*), pDownloadList (APP_CACHE_DOWNLOAD_LIST* out)
r1, _, err := procAppCacheGetDownloadList.Call(
	uintptr(hAppCache),
	uintptr(pDownloadList),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function AppCacheGetDownloadList(
  hAppCache: Pointer;   // void*
  pDownloadList: Pointer   // APP_CACHE_DOWNLOAD_LIST* out
): DWORD; stdcall;
  external 'WININET.dll' name 'AppCacheGetDownloadList';

result := DllCall("WININET\AppCacheGetDownloadList"
    , "Ptr", hAppCache   ; void*
    , "Ptr", pDownloadList   ; APP_CACHE_DOWNLOAD_LIST* out
    , "UInt")   ; return: DWORD

●AppCacheGetDownloadList(hAppCache, pDownloadList) = DLL("WININET.dll", "dword AppCacheGetDownloadList(void*, void*)")
# 呼び出し: AppCacheGetDownloadList(hAppCache, pDownloadList)
# hAppCache : void* -> "void*"
# pDownloadList : APP_CACHE_DOWNLOAD_LIST* 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)。