WinHttpWriteProxySettings

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

DWORD WinHttpWriteProxySettings(
    void* hSession,
    BOOL fForceUpdate,
    WINHTTP_PROXY_SETTINGS* pWinHttpProxySettings
);

<DllImport("WINHTTP.dll", ExactSpelling:=True)>
Public Shared Function WinHttpWriteProxySettings(
    hSession As IntPtr,   ' void*
    fForceUpdate As Boolean,   ' BOOL
    pWinHttpProxySettings As IntPtr   ' WINHTTP_PROXY_SETTINGS*
) As UInteger
End Function

' hSession : void*
' fForceUpdate : BOOL
' pWinHttpProxySettings : WINHTTP_PROXY_SETTINGS*
Declare PtrSafe Function WinHttpWriteProxySettings Lib "winhttp" ( _
    ByVal hSession As LongPtr, _
    ByVal fForceUpdate As Long, _
    ByVal pWinHttpProxySettings 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

WinHttpWriteProxySettings = ctypes.windll.winhttp.WinHttpWriteProxySettings
WinHttpWriteProxySettings.restype = wintypes.DWORD
WinHttpWriteProxySettings.argtypes = [
    ctypes.POINTER(None),  # hSession : void*
    wintypes.BOOL,  # fForceUpdate : BOOL
    ctypes.c_void_p,  # pWinHttpProxySettings : WINHTTP_PROXY_SETTINGS*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINHTTP.dll')
WinHttpWriteProxySettings = Fiddle::Function.new(
  lib['WinHttpWriteProxySettings'],
  [
    Fiddle::TYPE_VOIDP,  # hSession : void*
    Fiddle::TYPE_INT,  # fForceUpdate : BOOL
    Fiddle::TYPE_VOIDP,  # pWinHttpProxySettings : WINHTTP_PROXY_SETTINGS*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winhttp")]
extern "system" {
    fn WinHttpWriteProxySettings(
        hSession: *mut (),  // void*
        fForceUpdate: i32,  // BOOL
        pWinHttpProxySettings: *mut WINHTTP_PROXY_SETTINGS  // WINHTTP_PROXY_SETTINGS*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINHTTP.dll")]
public static extern uint WinHttpWriteProxySettings(IntPtr hSession, bool fForceUpdate, IntPtr pWinHttpProxySettings);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINHTTP_WinHttpWriteProxySettings' -Namespace Win32 -PassThru
# $api::WinHttpWriteProxySettings(hSession, fForceUpdate, pWinHttpProxySettings)

#uselib "WINHTTP.dll"
#func global WinHttpWriteProxySettings "WinHttpWriteProxySettings" sptr, sptr, sptr
; WinHttpWriteProxySettings hSession, fForceUpdate, varptr(pWinHttpProxySettings)   ; 戻り値は stat
; hSession : void* -> "sptr"
; fForceUpdate : BOOL -> "sptr"
; pWinHttpProxySettings : WINHTTP_PROXY_SETTINGS* -> "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 WinHttpWriteProxySettings "WinHttpWriteProxySettings" sptr, int, var
; res = WinHttpWriteProxySettings(hSession, fForceUpdate, pWinHttpProxySettings)
; hSession : void* -> "sptr"
; fForceUpdate : BOOL -> "int"
; pWinHttpProxySettings : WINHTTP_PROXY_SETTINGS* -> "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 WinHttpWriteProxySettings(void* hSession, BOOL fForceUpdate, WINHTTP_PROXY_SETTINGS* pWinHttpProxySettings)
#uselib "WINHTTP.dll"
#cfunc global WinHttpWriteProxySettings "WinHttpWriteProxySettings" intptr, int, var
; res = WinHttpWriteProxySettings(hSession, fForceUpdate, pWinHttpProxySettings)
; hSession : void* -> "intptr"
; fForceUpdate : BOOL -> "int"
; pWinHttpProxySettings : WINHTTP_PROXY_SETTINGS* -> "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 (
	winhttp = windows.NewLazySystemDLL("WINHTTP.dll")
	procWinHttpWriteProxySettings = winhttp.NewProc("WinHttpWriteProxySettings")
)

// hSession (void*), fForceUpdate (BOOL), pWinHttpProxySettings (WINHTTP_PROXY_SETTINGS*)
r1, _, err := procWinHttpWriteProxySettings.Call(
	uintptr(hSession),
	uintptr(fForceUpdate),
	uintptr(pWinHttpProxySettings),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function WinHttpWriteProxySettings(
  hSession: Pointer;   // void*
  fForceUpdate: BOOL;   // BOOL
  pWinHttpProxySettings: Pointer   // WINHTTP_PROXY_SETTINGS*
): DWORD; stdcall;
  external 'WINHTTP.dll' name 'WinHttpWriteProxySettings';

result := DllCall("WINHTTP\WinHttpWriteProxySettings"
    , "Ptr", hSession   ; void*
    , "Int", fForceUpdate   ; BOOL
    , "Ptr", pWinHttpProxySettings   ; WINHTTP_PROXY_SETTINGS*
    , "UInt")   ; return: DWORD

●WinHttpWriteProxySettings(hSession, fForceUpdate, pWinHttpProxySettings) = DLL("WINHTTP.dll", "dword WinHttpWriteProxySettings(void*, bool, void*)")
# 呼び出し: WinHttpWriteProxySettings(hSession, fForceUpdate, pWinHttpProxySettings)
# hSession : void* -> "void*"
# fForceUpdate : BOOL -> "bool"
# pWinHttpProxySettings : WINHTTP_PROXY_SETTINGS* -> "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)。