WinHttpSetStatusCallback

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

WINHTTP_STATUS_CALLBACK WinHttpSetStatusCallback(
    void* hInternet,
    WINHTTP_STATUS_CALLBACK lpfnInternetCallback,
    DWORD dwNotificationFlags,
    UINT_PTR dwReserved
);

<DllImport("WINHTTP.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WinHttpSetStatusCallback(
    hInternet As IntPtr,   ' void* in/out
    lpfnInternetCallback As IntPtr,   ' WINHTTP_STATUS_CALLBACK
    dwNotificationFlags As UInteger,   ' DWORD
    dwReserved As UIntPtr   ' UINT_PTR
) As IntPtr
End Function

' hInternet : void* in/out
' lpfnInternetCallback : WINHTTP_STATUS_CALLBACK
' dwNotificationFlags : DWORD
' dwReserved : UINT_PTR
Declare PtrSafe Function WinHttpSetStatusCallback Lib "winhttp" ( _
    ByVal hInternet As LongPtr, _
    ByVal lpfnInternetCallback As LongPtr, _
    ByVal dwNotificationFlags As Long, _
    ByVal dwReserved As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WinHttpSetStatusCallback = ctypes.windll.winhttp.WinHttpSetStatusCallback
WinHttpSetStatusCallback.restype = ctypes.c_void_p
WinHttpSetStatusCallback.argtypes = [
    ctypes.POINTER(None),  # hInternet : void* in/out
    ctypes.c_void_p,  # lpfnInternetCallback : WINHTTP_STATUS_CALLBACK
    wintypes.DWORD,  # dwNotificationFlags : DWORD
    ctypes.c_size_t,  # dwReserved : UINT_PTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINHTTP.dll')
WinHttpSetStatusCallback = Fiddle::Function.new(
  lib['WinHttpSetStatusCallback'],
  [
    Fiddle::TYPE_VOIDP,  # hInternet : void* in/out
    Fiddle::TYPE_VOIDP,  # lpfnInternetCallback : WINHTTP_STATUS_CALLBACK
    -Fiddle::TYPE_INT,  # dwNotificationFlags : DWORD
    Fiddle::TYPE_UINTPTR_T,  # dwReserved : UINT_PTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "winhttp")]
extern "system" {
    fn WinHttpSetStatusCallback(
        hInternet: *mut (),  // void* in/out
        lpfnInternetCallback: *const core::ffi::c_void,  // WINHTTP_STATUS_CALLBACK
        dwNotificationFlags: u32,  // DWORD
        dwReserved: usize  // UINT_PTR
    ) -> *const core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINHTTP.dll", SetLastError = true)]
public static extern IntPtr WinHttpSetStatusCallback(IntPtr hInternet, IntPtr lpfnInternetCallback, uint dwNotificationFlags, UIntPtr dwReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINHTTP_WinHttpSetStatusCallback' -Namespace Win32 -PassThru
# $api::WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)

#uselib "WINHTTP.dll"
#func global WinHttpSetStatusCallback "WinHttpSetStatusCallback" sptr, sptr, sptr, sptr
; WinHttpSetStatusCallback hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved   ; 戻り値は stat
; hInternet : void* in/out -> "sptr"
; lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> "sptr"
; dwNotificationFlags : DWORD -> "sptr"
; dwReserved : UINT_PTR -> "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 "WINHTTP.dll"
#cfunc global WinHttpSetStatusCallback "WinHttpSetStatusCallback" sptr, sptr, int, sptr
; res = WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)
; hInternet : void* in/out -> "sptr"
; lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> "sptr"
; dwNotificationFlags : DWORD -> "int"
; dwReserved : UINT_PTR -> "sptr"

; WINHTTP_STATUS_CALLBACK WinHttpSetStatusCallback(void* hInternet, WINHTTP_STATUS_CALLBACK lpfnInternetCallback, DWORD dwNotificationFlags, UINT_PTR dwReserved)
#uselib "WINHTTP.dll"
#cfunc global WinHttpSetStatusCallback "WinHttpSetStatusCallback" intptr, intptr, int, intptr
; res = WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)
; hInternet : void* in/out -> "intptr"
; lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> "intptr"
; dwNotificationFlags : DWORD -> "int"
; dwReserved : UINT_PTR -> "intptr"

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

var (
	winhttp = windows.NewLazySystemDLL("WINHTTP.dll")
	procWinHttpSetStatusCallback = winhttp.NewProc("WinHttpSetStatusCallback")
)

// hInternet (void* in/out), lpfnInternetCallback (WINHTTP_STATUS_CALLBACK), dwNotificationFlags (DWORD), dwReserved (UINT_PTR)
r1, _, err := procWinHttpSetStatusCallback.Call(
	uintptr(hInternet),
	uintptr(lpfnInternetCallback),
	uintptr(dwNotificationFlags),
	uintptr(dwReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WINHTTP_STATUS_CALLBACK

function WinHttpSetStatusCallback(
  hInternet: Pointer;   // void* in/out
  lpfnInternetCallback: Pointer;   // WINHTTP_STATUS_CALLBACK
  dwNotificationFlags: DWORD;   // DWORD
  dwReserved: NativeUInt   // UINT_PTR
): Pointer; stdcall;
  external 'WINHTTP.dll' name 'WinHttpSetStatusCallback';

result := DllCall("WINHTTP\WinHttpSetStatusCallback"
    , "Ptr", hInternet   ; void* in/out
    , "Ptr", lpfnInternetCallback   ; WINHTTP_STATUS_CALLBACK
    , "UInt", dwNotificationFlags   ; DWORD
    , "UPtr", dwReserved   ; UINT_PTR
    , "Ptr")   ; return: WINHTTP_STATUS_CALLBACK

●WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved) = DLL("WINHTTP.dll", "void* WinHttpSetStatusCallback(void*, void*, dword, int)")
# 呼び出し: WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)
# hInternet : void* in/out -> "void*"
# lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> "void*"
# dwNotificationFlags : DWORD -> "dword"
# dwReserved : UINT_PTR -> "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)。

const std = @import("std");

extern "winhttp" fn WinHttpSetStatusCallback(
    hInternet: ?*anyopaque, // void* in/out
    lpfnInternetCallback: ?*anyopaque, // WINHTTP_STATUS_CALLBACK
    dwNotificationFlags: u32, // DWORD
    dwReserved: usize // UINT_PTR
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc WinHttpSetStatusCallback(
    hInternet: pointer,  # void* in/out
    lpfnInternetCallback: pointer,  # WINHTTP_STATUS_CALLBACK
    dwNotificationFlags: uint32,  # DWORD
    dwReserved: uint  # UINT_PTR
): pointer {.importc: "WinHttpSetStatusCallback", stdcall, dynlib: "WINHTTP.dll".}

pragma(lib, "winhttp");
extern(Windows)
void* WinHttpSetStatusCallback(
    void* hInternet,   // void* in/out
    void* lpfnInternetCallback,   // WINHTTP_STATUS_CALLBACK
    uint dwNotificationFlags,   // DWORD
    size_t dwReserved   // UINT_PTR
);

ccall((:WinHttpSetStatusCallback, "WINHTTP.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, Ptr{Cvoid}, UInt32, Csize_t),
      hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)
# hInternet : void* in/out -> Ptr{Cvoid}
# lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> Ptr{Cvoid}
# dwNotificationFlags : DWORD -> UInt32
# dwReserved : UINT_PTR -> Csize_t
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* WinHttpSetStatusCallback(
    void* hInternet,
    void* lpfnInternetCallback,
    uint32_t dwNotificationFlags,
    uintptr_t dwReserved);
]]
local winhttp = ffi.load("winhttp")
-- winhttp.WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)
-- hInternet : void* in/out
-- lpfnInternetCallback : WINHTTP_STATUS_CALLBACK
-- dwNotificationFlags : DWORD
-- dwReserved : UINT_PTR
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('WINHTTP.dll');
const WinHttpSetStatusCallback = lib.func('__stdcall', 'WinHttpSetStatusCallback', 'void *', ['void *', 'void *', 'uint32_t', 'uintptr_t']);
// WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)
// hInternet : void* in/out -> 'void *'
// lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> 'void *'
// dwNotificationFlags : DWORD -> 'uint32_t'
// dwReserved : UINT_PTR -> 'uintptr_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
// コールバック(関数ポインタ)は koffi.proto/koffi.register で型を定義して渡す(素の void* では JS 関数を渡せない)。

const lib = Deno.dlopen("WINHTTP.dll", {
  WinHttpSetStatusCallback: { parameters: ["pointer", "pointer", "u32", "usize"], result: "pointer" },
});
// lib.symbols.WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved)
// hInternet : void* in/out -> "pointer"
// lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> "pointer"
// dwNotificationFlags : DWORD -> "u32"
// dwReserved : UINT_PTR -> "usize"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void* WinHttpSetStatusCallback(
    void* hInternet,
    void* lpfnInternetCallback,
    uint32_t dwNotificationFlags,
    size_t dwReserved);
C, "WINHTTP.dll");
// $ffi->WinHttpSetStatusCallback(hInternet, lpfnInternetCallback, dwNotificationFlags, dwReserved);
// hInternet : void* in/out
// lpfnInternetCallback : WINHTTP_STATUS_CALLBACK
// dwNotificationFlags : DWORD
// dwReserved : UINT_PTR
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Winhttp extends StdCallLibrary {
    Winhttp INSTANCE = Native.load("winhttp", Winhttp.class);
    Pointer WinHttpSetStatusCallback(
        Pointer hInternet,   // void* in/out
        Callback lpfnInternetCallback,   // WINHTTP_STATUS_CALLBACK
        int dwNotificationFlags,   // DWORD
        long dwReserved   // UINT_PTR
    );
}

@[Link("winhttp")]
lib LibWINHTTP
  fun WinHttpSetStatusCallback = WinHttpSetStatusCallback(
    hInternet : Void*,   # void* in/out
    lpfnInternetCallback : Void*,   # WINHTTP_STATUS_CALLBACK
    dwNotificationFlags : UInt32,   # DWORD
    dwReserved : LibC::SizeT   # UINT_PTR
  ) : Void*
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef WinHttpSetStatusCallbackNative = Pointer<Void> Function(Pointer<Void>, Pointer<Void>, Uint32, UintPtr);
typedef WinHttpSetStatusCallbackDart = Pointer<Void> Function(Pointer<Void>, Pointer<Void>, int, int);
final WinHttpSetStatusCallback = DynamicLibrary.open('WINHTTP.dll')
    .lookupFunction<WinHttpSetStatusCallbackNative, WinHttpSetStatusCallbackDart>('WinHttpSetStatusCallback');
// hInternet : void* in/out -> Pointer<Void>
// lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> Pointer<Void>
// dwNotificationFlags : DWORD -> Uint32
// dwReserved : UINT_PTR -> UintPtr
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WinHttpSetStatusCallback(
  hInternet: Pointer;   // void* in/out
  lpfnInternetCallback: Pointer;   // WINHTTP_STATUS_CALLBACK
  dwNotificationFlags: DWORD;   // DWORD
  dwReserved: NativeUInt   // UINT_PTR
): Pointer; stdcall;
  external 'WINHTTP.dll' name 'WinHttpSetStatusCallback';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "WinHttpSetStatusCallback"
  c_WinHttpSetStatusCallback :: Ptr () -> Ptr () -> Word32 -> CUIntPtr -> IO (Ptr ())
-- hInternet : void* in/out -> Ptr ()
-- lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> Ptr ()
-- dwNotificationFlags : DWORD -> Word32
-- dwReserved : UINT_PTR -> CUIntPtr
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let winhttpsetstatuscallback =
  foreign "WinHttpSetStatusCallback"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> size_t @-> returning (ptr void))
(* hInternet : void* in/out -> (ptr void) *)
(* lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> (ptr void) *)
(* dwNotificationFlags : DWORD -> uint32_t *)
(* dwReserved : UINT_PTR -> size_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library winhttp (t "WINHTTP.dll"))
(cffi:use-foreign-library winhttp)

(cffi:defcfun ("WinHttpSetStatusCallback" win-http-set-status-callback :convention :stdcall) :pointer
  (h-internet :pointer)   ; void* in/out
  (lpfn-internet-callback :pointer)   ; WINHTTP_STATUS_CALLBACK
  (dw-notification-flags :uint32)   ; DWORD
  (dw-reserved :uint64))   ; UINT_PTR
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WinHttpSetStatusCallback = Win32::API::More->new('WINHTTP',
    'LPVOID WinHttpSetStatusCallback(LPVOID hInternet, LPVOID lpfnInternetCallback, DWORD dwNotificationFlags, WPARAM dwReserved)');
# my $ret = $WinHttpSetStatusCallback->Call($hInternet, $lpfnInternetCallback, $dwNotificationFlags, $dwReserved);
# hInternet : void* in/out -> LPVOID
# lpfnInternetCallback : WINHTTP_STATUS_CALLBACK -> LPVOID
# dwNotificationFlags : DWORD -> DWORD
# dwReserved : UINT_PTR -> WPARAM
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# コールバック(関数ポインタ)は Perl sub を直接渡せません。Win32::API::Callback を使用してください。