InternetOpenUrlA

// WININET.dll  (ANSI / -A)
#include <windows.h>

void* InternetOpenUrlA(
    void* hInternet,
    LPCSTR lpszUrl,
    LPCSTR lpszHeaders,   // optional
    DWORD dwHeadersLength,
    DWORD dwFlags,
    UINT_PTR dwContext   // optional
);

<DllImport("WININET.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function InternetOpenUrlA(
    hInternet As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPStr)> lpszUrl As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> lpszHeaders As String,   ' LPCSTR optional
    dwHeadersLength As UInteger,   ' DWORD
    dwFlags As UInteger,   ' DWORD
    dwContext As UIntPtr   ' UINT_PTR optional
) As IntPtr
End Function

' hInternet : void*
' lpszUrl : LPCSTR
' lpszHeaders : LPCSTR optional
' dwHeadersLength : DWORD
' dwFlags : DWORD
' dwContext : UINT_PTR optional
Declare PtrSafe Function InternetOpenUrlA Lib "wininet" ( _
    ByVal hInternet As LongPtr, _
    ByVal lpszUrl As String, _
    ByVal lpszHeaders As String, _
    ByVal dwHeadersLength As Long, _
    ByVal dwFlags As Long, _
    ByVal dwContext As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

InternetOpenUrlA = ctypes.windll.wininet.InternetOpenUrlA
InternetOpenUrlA.restype = ctypes.c_void_p
InternetOpenUrlA.argtypes = [
    ctypes.POINTER(None),  # hInternet : void*
    wintypes.LPCSTR,  # lpszUrl : LPCSTR
    wintypes.LPCSTR,  # lpszHeaders : LPCSTR optional
    wintypes.DWORD,  # dwHeadersLength : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_size_t,  # dwContext : UINT_PTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
InternetOpenUrlA = Fiddle::Function.new(
  lib['InternetOpenUrlA'],
  [
    Fiddle::TYPE_VOIDP,  # hInternet : void*
    Fiddle::TYPE_VOIDP,  # lpszUrl : LPCSTR
    Fiddle::TYPE_VOIDP,  # lpszHeaders : LPCSTR optional
    -Fiddle::TYPE_INT,  # dwHeadersLength : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_UINTPTR_T,  # dwContext : UINT_PTR optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "wininet")]
extern "system" {
    fn InternetOpenUrlA(
        hInternet: *mut (),  // void*
        lpszUrl: *const u8,  // LPCSTR
        lpszHeaders: *const u8,  // LPCSTR optional
        dwHeadersLength: u32,  // DWORD
        dwFlags: u32,  // DWORD
        dwContext: usize  // UINT_PTR optional
    ) -> *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WININET.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern IntPtr InternetOpenUrlA(IntPtr hInternet, [MarshalAs(UnmanagedType.LPStr)] string lpszUrl, [MarshalAs(UnmanagedType.LPStr)] string lpszHeaders, uint dwHeadersLength, uint dwFlags, UIntPtr dwContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_InternetOpenUrlA' -Namespace Win32 -PassThru
# $api::InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)

#uselib "WININET.dll"
#func global InternetOpenUrlA "InternetOpenUrlA" sptr, sptr, sptr, sptr, sptr, sptr
; InternetOpenUrlA hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext   ; 戻り値は stat
; hInternet : void* -> "sptr"
; lpszUrl : LPCSTR -> "sptr"
; lpszHeaders : LPCSTR optional -> "sptr"
; dwHeadersLength : DWORD -> "sptr"
; dwFlags : DWORD -> "sptr"
; dwContext : UINT_PTR 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 "WININET.dll"
#cfunc global InternetOpenUrlA "InternetOpenUrlA" sptr, str, str, int, int, sptr
; res = InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)
; hInternet : void* -> "sptr"
; lpszUrl : LPCSTR -> "str"
; lpszHeaders : LPCSTR optional -> "str"
; dwHeadersLength : DWORD -> "int"
; dwFlags : DWORD -> "int"
; dwContext : UINT_PTR optional -> "sptr"

; void* InternetOpenUrlA(void* hInternet, LPCSTR lpszUrl, LPCSTR lpszHeaders, DWORD dwHeadersLength, DWORD dwFlags, UINT_PTR dwContext)
#uselib "WININET.dll"
#cfunc global InternetOpenUrlA "InternetOpenUrlA" intptr, str, str, int, int, intptr
; res = InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)
; hInternet : void* -> "intptr"
; lpszUrl : LPCSTR -> "str"
; lpszHeaders : LPCSTR optional -> "str"
; dwHeadersLength : DWORD -> "int"
; dwFlags : DWORD -> "int"
; dwContext : UINT_PTR optional -> "intptr"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procInternetOpenUrlA = wininet.NewProc("InternetOpenUrlA")
)

// hInternet (void*), lpszUrl (LPCSTR), lpszHeaders (LPCSTR optional), dwHeadersLength (DWORD), dwFlags (DWORD), dwContext (UINT_PTR optional)
r1, _, err := procInternetOpenUrlA.Call(
	uintptr(hInternet),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpszUrl))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpszHeaders))),
	uintptr(dwHeadersLength),
	uintptr(dwFlags),
	uintptr(dwContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function InternetOpenUrlA(
  hInternet: Pointer;   // void*
  lpszUrl: PAnsiChar;   // LPCSTR
  lpszHeaders: PAnsiChar;   // LPCSTR optional
  dwHeadersLength: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  dwContext: NativeUInt   // UINT_PTR optional
): Pointer; stdcall;
  external 'WININET.dll' name 'InternetOpenUrlA';

result := DllCall("WININET\InternetOpenUrlA"
    , "Ptr", hInternet   ; void*
    , "AStr", lpszUrl   ; LPCSTR
    , "AStr", lpszHeaders   ; LPCSTR optional
    , "UInt", dwHeadersLength   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "UPtr", dwContext   ; UINT_PTR optional
    , "Ptr")   ; return: void*

●InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext) = DLL("WININET.dll", "void* InternetOpenUrlA(void*, char*, char*, dword, dword, int)")
# 呼び出し: InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)
# hInternet : void* -> "void*"
# lpszUrl : LPCSTR -> "char*"
# lpszHeaders : LPCSTR optional -> "char*"
# dwHeadersLength : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# dwContext : UINT_PTR optional -> "int"
# 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)。

const std = @import("std");

extern "wininet" fn InternetOpenUrlA(
    hInternet: ?*anyopaque, // void*
    lpszUrl: [*c]const u8, // LPCSTR
    lpszHeaders: [*c]const u8, // LPCSTR optional
    dwHeadersLength: u32, // DWORD
    dwFlags: u32, // DWORD
    dwContext: usize // UINT_PTR optional
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc InternetOpenUrlA(
    hInternet: pointer,  # void*
    lpszUrl: cstring,  # LPCSTR
    lpszHeaders: cstring,  # LPCSTR optional
    dwHeadersLength: uint32,  # DWORD
    dwFlags: uint32,  # DWORD
    dwContext: uint  # UINT_PTR optional
): pointer {.importc: "InternetOpenUrlA", stdcall, dynlib: "WININET.dll".}

pragma(lib, "wininet");
extern(Windows)
void* InternetOpenUrlA(
    void* hInternet,   // void*
    const(char)* lpszUrl,   // LPCSTR
    const(char)* lpszHeaders,   // LPCSTR optional
    uint dwHeadersLength,   // DWORD
    uint dwFlags,   // DWORD
    size_t dwContext   // UINT_PTR optional
);

ccall((:InternetOpenUrlA, "WININET.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, Cstring, Cstring, UInt32, UInt32, Csize_t),
      hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)
# hInternet : void* -> Ptr{Cvoid}
# lpszUrl : LPCSTR -> Cstring
# lpszHeaders : LPCSTR optional -> Cstring
# dwHeadersLength : DWORD -> UInt32
# dwFlags : DWORD -> UInt32
# dwContext : UINT_PTR optional -> Csize_t
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* InternetOpenUrlA(
    void* hInternet,
    const char* lpszUrl,
    const char* lpszHeaders,
    uint32_t dwHeadersLength,
    uint32_t dwFlags,
    uintptr_t dwContext);
]]
local wininet = ffi.load("wininet")
-- wininet.InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)
-- hInternet : void*
-- lpszUrl : LPCSTR
-- lpszHeaders : LPCSTR optional
-- dwHeadersLength : DWORD
-- dwFlags : DWORD
-- dwContext : UINT_PTR optional
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('WININET.dll');
const InternetOpenUrlA = lib.func('__stdcall', 'InternetOpenUrlA', 'void *', ['void *', 'str', 'str', 'uint32_t', 'uint32_t', 'uintptr_t']);
// InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)
// hInternet : void* -> 'void *'
// lpszUrl : LPCSTR -> 'str'
// lpszHeaders : LPCSTR optional -> 'str'
// dwHeadersLength : DWORD -> 'uint32_t'
// dwFlags : DWORD -> 'uint32_t'
// dwContext : UINT_PTR optional -> 'uintptr_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("WININET.dll", {
  InternetOpenUrlA: { parameters: ["pointer", "buffer", "buffer", "u32", "u32", "usize"], result: "pointer" },
});
// lib.symbols.InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext)
// hInternet : void* -> "pointer"
// lpszUrl : LPCSTR -> "buffer"
// lpszHeaders : LPCSTR optional -> "buffer"
// dwHeadersLength : DWORD -> "u32"
// dwFlags : DWORD -> "u32"
// dwContext : UINT_PTR optional -> "usize"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void* InternetOpenUrlA(
    void* hInternet,
    const char* lpszUrl,
    const char* lpszHeaders,
    uint32_t dwHeadersLength,
    uint32_t dwFlags,
    size_t dwContext);
C, "WININET.dll");
// $ffi->InternetOpenUrlA(hInternet, lpszUrl, lpszHeaders, dwHeadersLength, dwFlags, dwContext);
// hInternet : void*
// lpszUrl : LPCSTR
// lpszHeaders : LPCSTR optional
// dwHeadersLength : DWORD
// dwFlags : DWORD
// dwContext : UINT_PTR optional
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Wininet extends StdCallLibrary {
    Wininet INSTANCE = Native.load("wininet", Wininet.class, W32APIOptions.ASCII_OPTIONS);
    Pointer InternetOpenUrlA(
        Pointer hInternet,   // void*
        String lpszUrl,   // LPCSTR
        String lpszHeaders,   // LPCSTR optional
        int dwHeadersLength,   // DWORD
        int dwFlags,   // DWORD
        long dwContext   // UINT_PTR optional
    );
}

@[Link("wininet")]
lib LibWININET
  fun InternetOpenUrlA = InternetOpenUrlA(
    hInternet : Void*,   # void*
    lpszUrl : UInt8*,   # LPCSTR
    lpszHeaders : UInt8*,   # LPCSTR optional
    dwHeadersLength : UInt32,   # DWORD
    dwFlags : UInt32,   # DWORD
    dwContext : LibC::SizeT   # UINT_PTR optional
  ) : Void*
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef InternetOpenUrlANative = Pointer<Void> Function(Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, Uint32, Uint32, UintPtr);
typedef InternetOpenUrlADart = Pointer<Void> Function(Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, int, int, int);
final InternetOpenUrlA = DynamicLibrary.open('WININET.dll')
    .lookupFunction<InternetOpenUrlANative, InternetOpenUrlADart>('InternetOpenUrlA');
// hInternet : void* -> Pointer<Void>
// lpszUrl : LPCSTR -> Pointer<Utf8>
// lpszHeaders : LPCSTR optional -> Pointer<Utf8>
// dwHeadersLength : DWORD -> Uint32
// dwFlags : DWORD -> Uint32
// dwContext : UINT_PTR optional -> UintPtr
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function InternetOpenUrlA(
  hInternet: Pointer;   // void*
  lpszUrl: PAnsiChar;   // LPCSTR
  lpszHeaders: PAnsiChar;   // LPCSTR optional
  dwHeadersLength: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  dwContext: NativeUInt   // UINT_PTR optional
): Pointer; stdcall;
  external 'WININET.dll' name 'InternetOpenUrlA';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "InternetOpenUrlA"
  c_InternetOpenUrlA :: Ptr () -> CString -> CString -> Word32 -> Word32 -> CUIntPtr -> IO (Ptr ())
-- hInternet : void* -> Ptr ()
-- lpszUrl : LPCSTR -> CString
-- lpszHeaders : LPCSTR optional -> CString
-- dwHeadersLength : DWORD -> Word32
-- dwFlags : DWORD -> Word32
-- dwContext : UINT_PTR optional -> CUIntPtr
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let internetopenurla =
  foreign "InternetOpenUrlA"
    ((ptr void) @-> string @-> string @-> uint32_t @-> uint32_t @-> size_t @-> returning (ptr void))
(* hInternet : void* -> (ptr void) *)
(* lpszUrl : LPCSTR -> string *)
(* lpszHeaders : LPCSTR optional -> string *)
(* dwHeadersLength : DWORD -> uint32_t *)
(* dwFlags : DWORD -> uint32_t *)
(* dwContext : UINT_PTR optional -> size_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library wininet (t "WININET.dll"))
(cffi:use-foreign-library wininet)

(cffi:defcfun ("InternetOpenUrlA" internet-open-url-a :convention :stdcall) :pointer
  (h-internet :pointer)   ; void*
  (lpsz-url :string)   ; LPCSTR
  (lpsz-headers :string)   ; LPCSTR optional
  (dw-headers-length :uint32)   ; DWORD
  (dw-flags :uint32)   ; DWORD
  (dw-context :uint64))   ; UINT_PTR optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $InternetOpenUrlA = Win32::API::More->new('WININET',
    'LPVOID InternetOpenUrlA(LPVOID hInternet, LPCSTR lpszUrl, LPCSTR lpszHeaders, DWORD dwHeadersLength, DWORD dwFlags, WPARAM dwContext)');
# my $ret = $InternetOpenUrlA->Call($hInternet, $lpszUrl, $lpszHeaders, $dwHeadersLength, $dwFlags, $dwContext);
# hInternet : void* -> LPVOID
# lpszUrl : LPCSTR -> LPCSTR
# lpszHeaders : LPCSTR optional -> LPCSTR
# dwHeadersLength : DWORD -> DWORD
# dwFlags : DWORD -> DWORD
# dwContext : UINT_PTR optional -> WPARAM
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。