HttpCancelHttpRequest

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

DWORD HttpCancelHttpRequest(
    HANDLE RequestQueueHandle,
    ULONGLONG RequestId,
    OVERLAPPED* Overlapped   // optional
);

<DllImport("HTTPAPI.dll", ExactSpelling:=True)>
Public Shared Function HttpCancelHttpRequest(
    RequestQueueHandle As IntPtr,   ' HANDLE
    RequestId As ULong,   ' ULONGLONG
    Overlapped As IntPtr   ' OVERLAPPED* optional, in/out
) As UInteger
End Function

' RequestQueueHandle : HANDLE
' RequestId : ULONGLONG
' Overlapped : OVERLAPPED* optional, in/out
Declare PtrSafe Function HttpCancelHttpRequest Lib "httpapi" ( _
    ByVal RequestQueueHandle As LongPtr, _
    ByVal RequestId As LongLong, _
    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

HttpCancelHttpRequest = ctypes.windll.httpapi.HttpCancelHttpRequest
HttpCancelHttpRequest.restype = wintypes.DWORD
HttpCancelHttpRequest.argtypes = [
    wintypes.HANDLE,  # RequestQueueHandle : HANDLE
    ctypes.c_ulonglong,  # RequestId : ULONGLONG
    ctypes.c_void_p,  # Overlapped : OVERLAPPED* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('HTTPAPI.dll')
HttpCancelHttpRequest = Fiddle::Function.new(
  lib['HttpCancelHttpRequest'],
  [
    Fiddle::TYPE_VOIDP,  # RequestQueueHandle : HANDLE
    -Fiddle::TYPE_LONG_LONG,  # RequestId : ULONGLONG
    Fiddle::TYPE_VOIDP,  # Overlapped : OVERLAPPED* optional, in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "httpapi")]
extern "system" {
    fn HttpCancelHttpRequest(
        RequestQueueHandle: *mut core::ffi::c_void,  // HANDLE
        RequestId: u64,  // ULONGLONG
        Overlapped: *mut OVERLAPPED  // OVERLAPPED* optional, in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "HTTPAPI.dll"
#func global HttpCancelHttpRequest "HttpCancelHttpRequest" sptr, sptr, sptr
; HttpCancelHttpRequest RequestQueueHandle, RequestId, varptr(Overlapped)   ; 戻り値は stat
; RequestQueueHandle : HANDLE -> "sptr"
; RequestId : ULONGLONG -> "sptr"
; Overlapped : OVERLAPPED* optional, in/out -> "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 HttpCancelHttpRequest "HttpCancelHttpRequest" sptr, int64, var
; res = HttpCancelHttpRequest(RequestQueueHandle, RequestId, Overlapped)
; RequestQueueHandle : HANDLE -> "sptr"
; RequestId : ULONGLONG -> "int64"
; Overlapped : OVERLAPPED* optional, in/out -> "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 HttpCancelHttpRequest(HANDLE RequestQueueHandle, ULONGLONG RequestId, OVERLAPPED* Overlapped)
#uselib "HTTPAPI.dll"
#cfunc global HttpCancelHttpRequest "HttpCancelHttpRequest" intptr, int64, var
; res = HttpCancelHttpRequest(RequestQueueHandle, RequestId, Overlapped)
; RequestQueueHandle : HANDLE -> "intptr"
; RequestId : ULONGLONG -> "int64"
; Overlapped : OVERLAPPED* optional, in/out -> "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")
	procHttpCancelHttpRequest = httpapi.NewProc("HttpCancelHttpRequest")
)

// RequestQueueHandle (HANDLE), RequestId (ULONGLONG), Overlapped (OVERLAPPED* optional, in/out)
r1, _, err := procHttpCancelHttpRequest.Call(
	uintptr(RequestQueueHandle),
	uintptr(RequestId),
	uintptr(Overlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function HttpCancelHttpRequest(
  RequestQueueHandle: THandle;   // HANDLE
  RequestId: UInt64;   // ULONGLONG
  Overlapped: Pointer   // OVERLAPPED* optional, in/out
): DWORD; stdcall;
  external 'HTTPAPI.dll' name 'HttpCancelHttpRequest';

result := DllCall("HTTPAPI\HttpCancelHttpRequest"
    , "Ptr", RequestQueueHandle   ; HANDLE
    , "Int64", RequestId   ; ULONGLONG
    , "Ptr", Overlapped   ; OVERLAPPED* optional, in/out
    , "UInt")   ; return: DWORD

●HttpCancelHttpRequest(RequestQueueHandle, RequestId, Overlapped) = DLL("HTTPAPI.dll", "dword HttpCancelHttpRequest(void*, qword, void*)")
# 呼び出し: HttpCancelHttpRequest(RequestQueueHandle, RequestId, Overlapped)
# RequestQueueHandle : HANDLE -> "void*"
# RequestId : ULONGLONG -> "qword"
# Overlapped : OVERLAPPED* optional, in/out -> "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)。