InternetSetStatusCallbackW

// WININET.dll  (Unicode / -W)
#include <windows.h>

LPINTERNET_STATUS_CALLBACK InternetSetStatusCallbackW(
    void* hInternet,
    LPINTERNET_STATUS_CALLBACK lpfnInternetCallback   // optional
);

<DllImport("WININET.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function InternetSetStatusCallbackW(
    hInternet As IntPtr,   ' void*
    lpfnInternetCallback As IntPtr   ' LPINTERNET_STATUS_CALLBACK optional
) As IntPtr
End Function

' hInternet : void*
' lpfnInternetCallback : LPINTERNET_STATUS_CALLBACK optional
Declare PtrSafe Function InternetSetStatusCallbackW Lib "wininet" ( _
    ByVal hInternet As LongPtr, _
    ByVal lpfnInternetCallback As LongPtr) As LongPtr
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

InternetSetStatusCallbackW = ctypes.windll.wininet.InternetSetStatusCallbackW
InternetSetStatusCallbackW.restype = ctypes.c_void_p
InternetSetStatusCallbackW.argtypes = [
    ctypes.POINTER(None),  # hInternet : void*
    ctypes.c_void_p,  # lpfnInternetCallback : LPINTERNET_STATUS_CALLBACK optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
InternetSetStatusCallbackW = Fiddle::Function.new(
  lib['InternetSetStatusCallbackW'],
  [
    Fiddle::TYPE_VOIDP,  # hInternet : void*
    Fiddle::TYPE_VOIDP,  # lpfnInternetCallback : LPINTERNET_STATUS_CALLBACK optional
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wininet")]
extern "system" {
    fn InternetSetStatusCallbackW(
        hInternet: *mut (),  // void*
        lpfnInternetCallback: *const core::ffi::c_void  // LPINTERNET_STATUS_CALLBACK optional
    ) -> *const core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WININET.dll", CharSet = CharSet.Unicode)]
public static extern IntPtr InternetSetStatusCallbackW(IntPtr hInternet, IntPtr lpfnInternetCallback);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_InternetSetStatusCallbackW' -Namespace Win32 -PassThru
# $api::InternetSetStatusCallbackW(hInternet, lpfnInternetCallback)

#uselib "WININET.dll"
#func global InternetSetStatusCallbackW "InternetSetStatusCallbackW" wptr, wptr
; InternetSetStatusCallbackW hInternet, lpfnInternetCallback   ; 戻り値は stat
; hInternet : void* -> "wptr"
; lpfnInternetCallback : LPINTERNET_STATUS_CALLBACK optional -> "wptr"
; ※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 InternetSetStatusCallbackW "InternetSetStatusCallbackW" sptr, sptr
; res = InternetSetStatusCallbackW(hInternet, lpfnInternetCallback)
; hInternet : void* -> "sptr"
; lpfnInternetCallback : LPINTERNET_STATUS_CALLBACK optional -> "sptr"

; LPINTERNET_STATUS_CALLBACK InternetSetStatusCallbackW(void* hInternet, LPINTERNET_STATUS_CALLBACK lpfnInternetCallback)
#uselib "WININET.dll"
#cfunc global InternetSetStatusCallbackW "InternetSetStatusCallbackW" intptr, intptr
; res = InternetSetStatusCallbackW(hInternet, lpfnInternetCallback)
; hInternet : void* -> "intptr"
; lpfnInternetCallback : LPINTERNET_STATUS_CALLBACK optional -> "intptr"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procInternetSetStatusCallbackW = wininet.NewProc("InternetSetStatusCallbackW")
)

// hInternet (void*), lpfnInternetCallback (LPINTERNET_STATUS_CALLBACK optional)
r1, _, err := procInternetSetStatusCallbackW.Call(
	uintptr(hInternet),
	uintptr(lpfnInternetCallback),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPINTERNET_STATUS_CALLBACK

function InternetSetStatusCallbackW(
  hInternet: Pointer;   // void*
  lpfnInternetCallback: Pointer   // LPINTERNET_STATUS_CALLBACK optional
): Pointer; stdcall;
  external 'WININET.dll' name 'InternetSetStatusCallbackW';

result := DllCall("WININET\InternetSetStatusCallbackW"
    , "Ptr", hInternet   ; void*
    , "Ptr", lpfnInternetCallback   ; LPINTERNET_STATUS_CALLBACK optional
    , "Ptr")   ; return: LPINTERNET_STATUS_CALLBACK

●InternetSetStatusCallbackW(hInternet, lpfnInternetCallback) = DLL("WININET.dll", "void* InternetSetStatusCallbackW(void*, void*)")
# 呼び出し: InternetSetStatusCallbackW(hInternet, lpfnInternetCallback)
# hInternet : void* -> "void*"
# lpfnInternetCallback : LPINTERNET_STATUS_CALLBACK 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。