HttpSetRequestProperty

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

DWORD HttpSetRequestProperty(
    HANDLE RequestQueueHandle,
    ULONGLONG Id,
    HTTP_REQUEST_PROPERTY PropertyId,
    void* Input,   // optional
    DWORD InputPropertySize,
    OVERLAPPED* Overlapped
);

<DllImport("HTTPAPI.dll", ExactSpelling:=True)>
Public Shared Function HttpSetRequestProperty(
    RequestQueueHandle As IntPtr,   ' HANDLE
    Id As ULong,   ' ULONGLONG
    PropertyId As Integer,   ' HTTP_REQUEST_PROPERTY
    Input As IntPtr,   ' void* optional
    InputPropertySize As UInteger,   ' DWORD
    Overlapped As IntPtr   ' OVERLAPPED*
) As UInteger
End Function

' RequestQueueHandle : HANDLE
' Id : ULONGLONG
' PropertyId : HTTP_REQUEST_PROPERTY
' Input : void* optional
' InputPropertySize : DWORD
' Overlapped : OVERLAPPED*
Declare PtrSafe Function HttpSetRequestProperty Lib "httpapi" ( _
    ByVal RequestQueueHandle As LongPtr, _
    ByVal Id As LongLong, _
    ByVal PropertyId As Long, _
    ByVal Input As LongPtr, _
    ByVal InputPropertySize 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

HttpSetRequestProperty = ctypes.windll.httpapi.HttpSetRequestProperty
HttpSetRequestProperty.restype = wintypes.DWORD
HttpSetRequestProperty.argtypes = [
    wintypes.HANDLE,  # RequestQueueHandle : HANDLE
    ctypes.c_ulonglong,  # Id : ULONGLONG
    ctypes.c_int,  # PropertyId : HTTP_REQUEST_PROPERTY
    ctypes.POINTER(None),  # Input : void* optional
    wintypes.DWORD,  # InputPropertySize : DWORD
    ctypes.c_void_p,  # Overlapped : OVERLAPPED*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('HTTPAPI.dll')
HttpSetRequestProperty = Fiddle::Function.new(
  lib['HttpSetRequestProperty'],
  [
    Fiddle::TYPE_VOIDP,  # RequestQueueHandle : HANDLE
    -Fiddle::TYPE_LONG_LONG,  # Id : ULONGLONG
    Fiddle::TYPE_INT,  # PropertyId : HTTP_REQUEST_PROPERTY
    Fiddle::TYPE_VOIDP,  # Input : void* optional
    -Fiddle::TYPE_INT,  # InputPropertySize : DWORD
    Fiddle::TYPE_VOIDP,  # Overlapped : OVERLAPPED*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "httpapi")]
extern "system" {
    fn HttpSetRequestProperty(
        RequestQueueHandle: *mut core::ffi::c_void,  // HANDLE
        Id: u64,  // ULONGLONG
        PropertyId: i32,  // HTTP_REQUEST_PROPERTY
        Input: *mut (),  // void* optional
        InputPropertySize: u32,  // DWORD
        Overlapped: *mut OVERLAPPED  // OVERLAPPED*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("HTTPAPI.dll")]
public static extern uint HttpSetRequestProperty(IntPtr RequestQueueHandle, ulong Id, int PropertyId, IntPtr Input, uint InputPropertySize, IntPtr Overlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'HTTPAPI_HttpSetRequestProperty' -Namespace Win32 -PassThru
# $api::HttpSetRequestProperty(RequestQueueHandle, Id, PropertyId, Input, InputPropertySize, Overlapped)

#uselib "HTTPAPI.dll"
#func global HttpSetRequestProperty "HttpSetRequestProperty" sptr, sptr, sptr, sptr, sptr, sptr
; HttpSetRequestProperty RequestQueueHandle, Id, PropertyId, Input, InputPropertySize, varptr(Overlapped)   ; 戻り値は stat
; RequestQueueHandle : HANDLE -> "sptr"
; Id : ULONGLONG -> "sptr"
; PropertyId : HTTP_REQUEST_PROPERTY -> "sptr"
; Input : void* optional -> "sptr"
; InputPropertySize : DWORD -> "sptr"
; Overlapped : OVERLAPPED* -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 HttpSetRequestProperty "HttpSetRequestProperty" sptr, int64, int, sptr, int, var
; res = HttpSetRequestProperty(RequestQueueHandle, Id, PropertyId, Input, InputPropertySize, Overlapped)
; RequestQueueHandle : HANDLE -> "sptr"
; Id : ULONGLONG -> "int64"
; PropertyId : HTTP_REQUEST_PROPERTY -> "int"
; Input : void* optional -> "sptr"
; InputPropertySize : DWORD -> "int"
; Overlapped : OVERLAPPED* -> "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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; DWORD HttpSetRequestProperty(HANDLE RequestQueueHandle, ULONGLONG Id, HTTP_REQUEST_PROPERTY PropertyId, void* Input, DWORD InputPropertySize, OVERLAPPED* Overlapped)
#uselib "HTTPAPI.dll"
#cfunc global HttpSetRequestProperty "HttpSetRequestProperty" intptr, int64, int, intptr, int, var
; res = HttpSetRequestProperty(RequestQueueHandle, Id, PropertyId, Input, InputPropertySize, Overlapped)
; RequestQueueHandle : HANDLE -> "intptr"
; Id : ULONGLONG -> "int64"
; PropertyId : HTTP_REQUEST_PROPERTY -> "int"
; Input : void* optional -> "intptr"
; InputPropertySize : DWORD -> "int"
; Overlapped : OVERLAPPED* -> "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")
	procHttpSetRequestProperty = httpapi.NewProc("HttpSetRequestProperty")
)

// RequestQueueHandle (HANDLE), Id (ULONGLONG), PropertyId (HTTP_REQUEST_PROPERTY), Input (void* optional), InputPropertySize (DWORD), Overlapped (OVERLAPPED*)
r1, _, err := procHttpSetRequestProperty.Call(
	uintptr(RequestQueueHandle),
	uintptr(Id),
	uintptr(PropertyId),
	uintptr(Input),
	uintptr(InputPropertySize),
	uintptr(Overlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function HttpSetRequestProperty(
  RequestQueueHandle: THandle;   // HANDLE
  Id: UInt64;   // ULONGLONG
  PropertyId: Integer;   // HTTP_REQUEST_PROPERTY
  Input: Pointer;   // void* optional
  InputPropertySize: DWORD;   // DWORD
  Overlapped: Pointer   // OVERLAPPED*
): DWORD; stdcall;
  external 'HTTPAPI.dll' name 'HttpSetRequestProperty';

result := DllCall("HTTPAPI\HttpSetRequestProperty"
    , "Ptr", RequestQueueHandle   ; HANDLE
    , "Int64", Id   ; ULONGLONG
    , "Int", PropertyId   ; HTTP_REQUEST_PROPERTY
    , "Ptr", Input   ; void* optional
    , "UInt", InputPropertySize   ; DWORD
    , "Ptr", Overlapped   ; OVERLAPPED*
    , "UInt")   ; return: DWORD

●HttpSetRequestProperty(RequestQueueHandle, Id, PropertyId, Input, InputPropertySize, Overlapped) = DLL("HTTPAPI.dll", "dword HttpSetRequestProperty(void*, qword, int, void*, dword, void*)")
# 呼び出し: HttpSetRequestProperty(RequestQueueHandle, Id, PropertyId, Input, InputPropertySize, Overlapped)
# RequestQueueHandle : HANDLE -> "void*"
# Id : ULONGLONG -> "qword"
# PropertyId : HTTP_REQUEST_PROPERTY -> "int"
# Input : void* optional -> "void*"
# InputPropertySize : DWORD -> "dword"
# Overlapped : OVERLAPPED* -> "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)。