HttpFlushResponseCache

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

DWORD HttpFlushResponseCache(
    HANDLE RequestQueueHandle,
    LPCWSTR UrlPrefix,
    DWORD Flags,
    OVERLAPPED* Overlapped   // optional
);

<DllImport("HTTPAPI.dll", ExactSpelling:=True)>
Public Shared Function HttpFlushResponseCache(
    RequestQueueHandle As IntPtr,   ' HANDLE
    <MarshalAs(UnmanagedType.LPWStr)> UrlPrefix As String,   ' LPCWSTR
    Flags As UInteger,   ' DWORD
    Overlapped As IntPtr   ' OVERLAPPED* optional, in/out
) As UInteger
End Function

' RequestQueueHandle : HANDLE
' UrlPrefix : LPCWSTR
' Flags : DWORD
' Overlapped : OVERLAPPED* optional, in/out
Declare PtrSafe Function HttpFlushResponseCache Lib "httpapi" ( _
    ByVal RequestQueueHandle As LongPtr, _
    ByVal UrlPrefix As LongPtr, _
    ByVal Flags As Long, _
    ByVal Overlapped 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

HttpFlushResponseCache = ctypes.windll.httpapi.HttpFlushResponseCache
HttpFlushResponseCache.restype = wintypes.DWORD
HttpFlushResponseCache.argtypes = [
    wintypes.HANDLE,  # RequestQueueHandle : HANDLE
    wintypes.LPCWSTR,  # UrlPrefix : LPCWSTR
    wintypes.DWORD,  # Flags : DWORD
    ctypes.c_void_p,  # Overlapped : OVERLAPPED* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('HTTPAPI.dll')
HttpFlushResponseCache = Fiddle::Function.new(
  lib['HttpFlushResponseCache'],
  [
    Fiddle::TYPE_VOIDP,  # RequestQueueHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # UrlPrefix : LPCWSTR
    -Fiddle::TYPE_INT,  # Flags : DWORD
    Fiddle::TYPE_VOIDP,  # Overlapped : OVERLAPPED* optional, in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "httpapi")]
extern "system" {
    fn HttpFlushResponseCache(
        RequestQueueHandle: *mut core::ffi::c_void,  // HANDLE
        UrlPrefix: *const u16,  // LPCWSTR
        Flags: u32,  // DWORD
        Overlapped: *mut OVERLAPPED  // OVERLAPPED* optional, in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("HTTPAPI.dll")]
public static extern uint HttpFlushResponseCache(IntPtr RequestQueueHandle, [MarshalAs(UnmanagedType.LPWStr)] string UrlPrefix, uint Flags, IntPtr Overlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'HTTPAPI_HttpFlushResponseCache' -Namespace Win32 -PassThru
# $api::HttpFlushResponseCache(RequestQueueHandle, UrlPrefix, Flags, Overlapped)

#uselib "HTTPAPI.dll"
#func global HttpFlushResponseCache "HttpFlushResponseCache" sptr, sptr, sptr, sptr
; HttpFlushResponseCache RequestQueueHandle, UrlPrefix, Flags, varptr(Overlapped)   ; 戻り値は stat
; RequestQueueHandle : HANDLE -> "sptr"
; UrlPrefix : LPCWSTR -> "sptr"
; Flags : DWORD -> "sptr"
; Overlapped : OVERLAPPED* optional, in/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 "HTTPAPI.dll"
#cfunc global HttpFlushResponseCache "HttpFlushResponseCache" sptr, wstr, int, var
; res = HttpFlushResponseCache(RequestQueueHandle, UrlPrefix, Flags, Overlapped)
; RequestQueueHandle : HANDLE -> "sptr"
; UrlPrefix : LPCWSTR -> "wstr"
; Flags : DWORD -> "int"
; Overlapped : OVERLAPPED* optional, in/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 HttpFlushResponseCache(HANDLE RequestQueueHandle, LPCWSTR UrlPrefix, DWORD Flags, OVERLAPPED* Overlapped)
#uselib "HTTPAPI.dll"
#cfunc global HttpFlushResponseCache "HttpFlushResponseCache" intptr, wstr, int, var
; res = HttpFlushResponseCache(RequestQueueHandle, UrlPrefix, Flags, Overlapped)
; RequestQueueHandle : HANDLE -> "intptr"
; UrlPrefix : LPCWSTR -> "wstr"
; Flags : DWORD -> "int"
; Overlapped : OVERLAPPED* optional, in/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 (
	httpapi = windows.NewLazySystemDLL("HTTPAPI.dll")
	procHttpFlushResponseCache = httpapi.NewProc("HttpFlushResponseCache")
)

// RequestQueueHandle (HANDLE), UrlPrefix (LPCWSTR), Flags (DWORD), Overlapped (OVERLAPPED* optional, in/out)
r1, _, err := procHttpFlushResponseCache.Call(
	uintptr(RequestQueueHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(UrlPrefix))),
	uintptr(Flags),
	uintptr(Overlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function HttpFlushResponseCache(
  RequestQueueHandle: THandle;   // HANDLE
  UrlPrefix: PWideChar;   // LPCWSTR
  Flags: DWORD;   // DWORD
  Overlapped: Pointer   // OVERLAPPED* optional, in/out
): DWORD; stdcall;
  external 'HTTPAPI.dll' name 'HttpFlushResponseCache';

result := DllCall("HTTPAPI\HttpFlushResponseCache"
    , "Ptr", RequestQueueHandle   ; HANDLE
    , "WStr", UrlPrefix   ; LPCWSTR
    , "UInt", Flags   ; DWORD
    , "Ptr", Overlapped   ; OVERLAPPED* optional, in/out
    , "UInt")   ; return: DWORD

●HttpFlushResponseCache(RequestQueueHandle, UrlPrefix, Flags, Overlapped) = DLL("HTTPAPI.dll", "dword HttpFlushResponseCache(void*, char*, dword, void*)")
# 呼び出し: HttpFlushResponseCache(RequestQueueHandle, UrlPrefix, Flags, Overlapped)
# RequestQueueHandle : HANDLE -> "void*"
# UrlPrefix : LPCWSTR -> "char*"
# Flags : DWORD -> "dword"
# Overlapped : OVERLAPPED* optional, in/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)。