HttpCreateHttpHandle

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

DWORD HttpCreateHttpHandle(
    HANDLE* RequestQueueHandle,
    DWORD Reserved   // optional
);

<DllImport("HTTPAPI.dll", ExactSpelling:=True)>
Public Shared Function HttpCreateHttpHandle(
    RequestQueueHandle As IntPtr,   ' HANDLE* out
    Reserved As UInteger   ' DWORD optional
) As UInteger
End Function

' RequestQueueHandle : HANDLE* out
' Reserved : DWORD optional
Declare PtrSafe Function HttpCreateHttpHandle Lib "httpapi" ( _
    ByVal RequestQueueHandle As LongPtr, _
    ByVal Reserved As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

HttpCreateHttpHandle = ctypes.windll.httpapi.HttpCreateHttpHandle
HttpCreateHttpHandle.restype = wintypes.DWORD
HttpCreateHttpHandle.argtypes = [
    ctypes.c_void_p,  # RequestQueueHandle : HANDLE* out
    wintypes.DWORD,  # Reserved : DWORD optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('HTTPAPI.dll')
HttpCreateHttpHandle = Fiddle::Function.new(
  lib['HttpCreateHttpHandle'],
  [
    Fiddle::TYPE_VOIDP,  # RequestQueueHandle : HANDLE* out
    -Fiddle::TYPE_INT,  # Reserved : DWORD optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "httpapi")]
extern "system" {
    fn HttpCreateHttpHandle(
        RequestQueueHandle: *mut *mut core::ffi::c_void,  // HANDLE* out
        Reserved: u32  // DWORD optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("HTTPAPI.dll")]
public static extern uint HttpCreateHttpHandle(IntPtr RequestQueueHandle, uint Reserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'HTTPAPI_HttpCreateHttpHandle' -Namespace Win32 -PassThru
# $api::HttpCreateHttpHandle(RequestQueueHandle, Reserved)

#uselib "HTTPAPI.dll"
#func global HttpCreateHttpHandle "HttpCreateHttpHandle" sptr, sptr
; HttpCreateHttpHandle RequestQueueHandle, Reserved   ; 戻り値は stat
; RequestQueueHandle : HANDLE* out -> "sptr"
; Reserved : DWORD optional -> "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 "HTTPAPI.dll"
#cfunc global HttpCreateHttpHandle "HttpCreateHttpHandle" sptr, int
; res = HttpCreateHttpHandle(RequestQueueHandle, Reserved)
; RequestQueueHandle : HANDLE* out -> "sptr"
; Reserved : DWORD optional -> "int"

; DWORD HttpCreateHttpHandle(HANDLE* RequestQueueHandle, DWORD Reserved)
#uselib "HTTPAPI.dll"
#cfunc global HttpCreateHttpHandle "HttpCreateHttpHandle" intptr, int
; res = HttpCreateHttpHandle(RequestQueueHandle, Reserved)
; RequestQueueHandle : HANDLE* out -> "intptr"
; Reserved : DWORD optional -> "int"

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

var (
	httpapi = windows.NewLazySystemDLL("HTTPAPI.dll")
	procHttpCreateHttpHandle = httpapi.NewProc("HttpCreateHttpHandle")
)

// RequestQueueHandle (HANDLE* out), Reserved (DWORD optional)
r1, _, err := procHttpCreateHttpHandle.Call(
	uintptr(RequestQueueHandle),
	uintptr(Reserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function HttpCreateHttpHandle(
  RequestQueueHandle: Pointer;   // HANDLE* out
  Reserved: DWORD   // DWORD optional
): DWORD; stdcall;
  external 'HTTPAPI.dll' name 'HttpCreateHttpHandle';

result := DllCall("HTTPAPI\HttpCreateHttpHandle"
    , "Ptr", RequestQueueHandle   ; HANDLE* out
    , "UInt", Reserved   ; DWORD optional
    , "UInt")   ; return: DWORD

●HttpCreateHttpHandle(RequestQueueHandle, Reserved) = DLL("HTTPAPI.dll", "dword HttpCreateHttpHandle(void*, dword)")
# 呼び出し: HttpCreateHttpHandle(RequestQueueHandle, Reserved)
# RequestQueueHandle : HANDLE* out -> "void*"
# Reserved : DWORD optional -> "dword"
# 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)。