WinHttpFreeProxySettingsEx

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

DWORD WinHttpFreeProxySettingsEx(
    WINHTTP_PROXY_SETTINGS_TYPE ProxySettingsType,
    void* pProxySettingsEx
);

<DllImport("WINHTTP.dll", ExactSpelling:=True)>
Public Shared Function WinHttpFreeProxySettingsEx(
    ProxySettingsType As Integer,   ' WINHTTP_PROXY_SETTINGS_TYPE
    pProxySettingsEx As IntPtr   ' void*
) As UInteger
End Function

' ProxySettingsType : WINHTTP_PROXY_SETTINGS_TYPE
' pProxySettingsEx : void*
Declare PtrSafe Function WinHttpFreeProxySettingsEx Lib "winhttp" ( _
    ByVal ProxySettingsType As Long, _
    ByVal pProxySettingsEx 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

WinHttpFreeProxySettingsEx = ctypes.windll.winhttp.WinHttpFreeProxySettingsEx
WinHttpFreeProxySettingsEx.restype = wintypes.DWORD
WinHttpFreeProxySettingsEx.argtypes = [
    ctypes.c_int,  # ProxySettingsType : WINHTTP_PROXY_SETTINGS_TYPE
    ctypes.POINTER(None),  # pProxySettingsEx : void*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINHTTP.dll')
WinHttpFreeProxySettingsEx = Fiddle::Function.new(
  lib['WinHttpFreeProxySettingsEx'],
  [
    Fiddle::TYPE_INT,  # ProxySettingsType : WINHTTP_PROXY_SETTINGS_TYPE
    Fiddle::TYPE_VOIDP,  # pProxySettingsEx : void*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winhttp")]
extern "system" {
    fn WinHttpFreeProxySettingsEx(
        ProxySettingsType: i32,  // WINHTTP_PROXY_SETTINGS_TYPE
        pProxySettingsEx: *mut ()  // void*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINHTTP.dll")]
public static extern uint WinHttpFreeProxySettingsEx(int ProxySettingsType, IntPtr pProxySettingsEx);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINHTTP_WinHttpFreeProxySettingsEx' -Namespace Win32 -PassThru
# $api::WinHttpFreeProxySettingsEx(ProxySettingsType, pProxySettingsEx)

#uselib "WINHTTP.dll"
#func global WinHttpFreeProxySettingsEx "WinHttpFreeProxySettingsEx" sptr, sptr
; WinHttpFreeProxySettingsEx ProxySettingsType, pProxySettingsEx   ; 戻り値は stat
; ProxySettingsType : WINHTTP_PROXY_SETTINGS_TYPE -> "sptr"
; pProxySettingsEx : void* -> "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 WinHttpFreeProxySettingsEx "WinHttpFreeProxySettingsEx" int, sptr
; res = WinHttpFreeProxySettingsEx(ProxySettingsType, pProxySettingsEx)
; ProxySettingsType : WINHTTP_PROXY_SETTINGS_TYPE -> "int"
; pProxySettingsEx : void* -> "sptr"

; DWORD WinHttpFreeProxySettingsEx(WINHTTP_PROXY_SETTINGS_TYPE ProxySettingsType, void* pProxySettingsEx)
#uselib "WINHTTP.dll"
#cfunc global WinHttpFreeProxySettingsEx "WinHttpFreeProxySettingsEx" int, intptr
; res = WinHttpFreeProxySettingsEx(ProxySettingsType, pProxySettingsEx)
; ProxySettingsType : WINHTTP_PROXY_SETTINGS_TYPE -> "int"
; pProxySettingsEx : void* -> "intptr"

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

var (
	winhttp = windows.NewLazySystemDLL("WINHTTP.dll")
	procWinHttpFreeProxySettingsEx = winhttp.NewProc("WinHttpFreeProxySettingsEx")
)

// ProxySettingsType (WINHTTP_PROXY_SETTINGS_TYPE), pProxySettingsEx (void*)
r1, _, err := procWinHttpFreeProxySettingsEx.Call(
	uintptr(ProxySettingsType),
	uintptr(pProxySettingsEx),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function WinHttpFreeProxySettingsEx(
  ProxySettingsType: Integer;   // WINHTTP_PROXY_SETTINGS_TYPE
  pProxySettingsEx: Pointer   // void*
): DWORD; stdcall;
  external 'WINHTTP.dll' name 'WinHttpFreeProxySettingsEx';

result := DllCall("WINHTTP\WinHttpFreeProxySettingsEx"
    , "Int", ProxySettingsType   ; WINHTTP_PROXY_SETTINGS_TYPE
    , "Ptr", pProxySettingsEx   ; void*
    , "UInt")   ; return: DWORD

●WinHttpFreeProxySettingsEx(ProxySettingsType, pProxySettingsEx) = DLL("WINHTTP.dll", "dword WinHttpFreeProxySettingsEx(int, void*)")
# 呼び出し: WinHttpFreeProxySettingsEx(ProxySettingsType, pProxySettingsEx)
# ProxySettingsType : WINHTTP_PROXY_SETTINGS_TYPE -> "int"
# pProxySettingsEx : void* -> "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)。