CreateUrlCacheGroup

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

LONGLONG CreateUrlCacheGroup(
    DWORD dwFlags,
    void* lpReserved   // optional
);

<DllImport("WININET.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CreateUrlCacheGroup(
    dwFlags As UInteger,   ' DWORD
    lpReserved As IntPtr   ' void* optional
) As Long
End Function

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

import ctypes
from ctypes import wintypes

CreateUrlCacheGroup = ctypes.windll.wininet.CreateUrlCacheGroup
CreateUrlCacheGroup.restype = ctypes.c_longlong
CreateUrlCacheGroup.argtypes = [
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.POINTER(None),  # lpReserved : void* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
CreateUrlCacheGroup = Fiddle::Function.new(
  lib['CreateUrlCacheGroup'],
  [
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # lpReserved : void* optional
  ],
  Fiddle::TYPE_LONG_LONG)

#[link(name = "wininet")]
extern "system" {
    fn CreateUrlCacheGroup(
        dwFlags: u32,  // DWORD
        lpReserved: *mut ()  // void* optional
    ) -> i64;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WININET.dll", SetLastError = true)]
public static extern long CreateUrlCacheGroup(uint dwFlags, IntPtr lpReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_CreateUrlCacheGroup' -Namespace Win32 -PassThru
# $api::CreateUrlCacheGroup(dwFlags, lpReserved)

#uselib "WININET.dll"
#func global CreateUrlCacheGroup "CreateUrlCacheGroup" sptr, sptr
; CreateUrlCacheGroup dwFlags, lpReserved   ; 戻り値は stat
; dwFlags : DWORD -> "sptr"
; lpReserved : void* optional -> "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 CreateUrlCacheGroup "CreateUrlCacheGroup" int, sptr
; res = CreateUrlCacheGroup(dwFlags, lpReserved)
; dwFlags : DWORD -> "int"
; lpReserved : void* optional -> "sptr"

; LONGLONG CreateUrlCacheGroup(DWORD dwFlags, void* lpReserved)
#uselib "WININET.dll"
#cfunc global CreateUrlCacheGroup "CreateUrlCacheGroup" int, intptr
; res = CreateUrlCacheGroup(dwFlags, lpReserved)
; dwFlags : DWORD -> "int"
; lpReserved : void* optional -> "intptr"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procCreateUrlCacheGroup = wininet.NewProc("CreateUrlCacheGroup")
)

// dwFlags (DWORD), lpReserved (void* optional)
r1, _, err := procCreateUrlCacheGroup.Call(
	uintptr(dwFlags),
	uintptr(lpReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LONGLONG

function CreateUrlCacheGroup(
  dwFlags: DWORD;   // DWORD
  lpReserved: Pointer   // void* optional
): Int64; stdcall;
  external 'WININET.dll' name 'CreateUrlCacheGroup';

result := DllCall("WININET\CreateUrlCacheGroup"
    , "UInt", dwFlags   ; DWORD
    , "Ptr", lpReserved   ; void* optional
    , "Int64")   ; return: LONGLONG

●CreateUrlCacheGroup(dwFlags, lpReserved) = DLL("WININET.dll", "int64 CreateUrlCacheGroup(dword, void*)")
# 呼び出し: CreateUrlCacheGroup(dwFlags, lpReserved)
# dwFlags : DWORD -> "dword"
# lpReserved : void* optional -> "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)。