InternetDialA

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

DWORD InternetDialA(
    HWND hwndParent,
    LPSTR lpszConnectoid,   // optional
    DWORD dwFlags,
    UINT_PTR* lpdwConnection,
    DWORD dwReserved   // optional
);

<DllImport("WININET.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function InternetDialA(
    hwndParent As IntPtr,   ' HWND
    <MarshalAs(UnmanagedType.LPStr)> lpszConnectoid As String,   ' LPSTR optional
    dwFlags As UInteger,   ' DWORD
    <Out> ByRef lpdwConnection As UIntPtr,   ' UINT_PTR* out
    dwReserved As UInteger   ' DWORD optional
) As UInteger
End Function

' hwndParent : HWND
' lpszConnectoid : LPSTR optional
' dwFlags : DWORD
' lpdwConnection : UINT_PTR* out
' dwReserved : DWORD optional
Declare PtrSafe Function InternetDialA Lib "wininet" ( _
    ByVal hwndParent As LongPtr, _
    ByVal lpszConnectoid As String, _
    ByVal dwFlags As Long, _
    ByRef lpdwConnection As LongPtr, _
    ByVal dwReserved 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

InternetDialA = ctypes.windll.wininet.InternetDialA
InternetDialA.restype = wintypes.DWORD
InternetDialA.argtypes = [
    wintypes.HANDLE,  # hwndParent : HWND
    wintypes.LPCSTR,  # lpszConnectoid : LPSTR optional
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.POINTER(ctypes.c_size_t),  # lpdwConnection : UINT_PTR* out
    wintypes.DWORD,  # dwReserved : DWORD optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
InternetDialA = Fiddle::Function.new(
  lib['InternetDialA'],
  [
    Fiddle::TYPE_VOIDP,  # hwndParent : HWND
    Fiddle::TYPE_VOIDP,  # lpszConnectoid : LPSTR optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # lpdwConnection : UINT_PTR* out
    -Fiddle::TYPE_INT,  # dwReserved : DWORD optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wininet")]
extern "system" {
    fn InternetDialA(
        hwndParent: *mut core::ffi::c_void,  // HWND
        lpszConnectoid: *mut u8,  // LPSTR optional
        dwFlags: u32,  // DWORD
        lpdwConnection: *mut usize,  // UINT_PTR* out
        dwReserved: u32  // DWORD optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WININET.dll", CharSet = CharSet.Ansi)]
public static extern uint InternetDialA(IntPtr hwndParent, [MarshalAs(UnmanagedType.LPStr)] string lpszConnectoid, uint dwFlags, out UIntPtr lpdwConnection, uint dwReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_InternetDialA' -Namespace Win32 -PassThru
# $api::InternetDialA(hwndParent, lpszConnectoid, dwFlags, lpdwConnection, dwReserved)

#uselib "WININET.dll"
#func global InternetDialA "InternetDialA" sptr, sptr, sptr, sptr, sptr
; InternetDialA hwndParent, lpszConnectoid, dwFlags, varptr(lpdwConnection), dwReserved   ; 戻り値は stat
; hwndParent : HWND -> "sptr"
; lpszConnectoid : LPSTR optional -> "sptr"
; dwFlags : DWORD -> "sptr"
; lpdwConnection : UINT_PTR* out -> "sptr"
; dwReserved : 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 "WININET.dll"
#cfunc global InternetDialA "InternetDialA" sptr, str, int, var, int
; res = InternetDialA(hwndParent, lpszConnectoid, dwFlags, lpdwConnection, dwReserved)
; hwndParent : HWND -> "sptr"
; lpszConnectoid : LPSTR optional -> "str"
; dwFlags : DWORD -> "int"
; lpdwConnection : UINT_PTR* out -> "var"
; dwReserved : DWORD optional -> "int"
; ※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 InternetDialA(HWND hwndParent, LPSTR lpszConnectoid, DWORD dwFlags, UINT_PTR* lpdwConnection, DWORD dwReserved)
#uselib "WININET.dll"
#cfunc global InternetDialA "InternetDialA" intptr, str, int, var, int
; res = InternetDialA(hwndParent, lpszConnectoid, dwFlags, lpdwConnection, dwReserved)
; hwndParent : HWND -> "intptr"
; lpszConnectoid : LPSTR optional -> "str"
; dwFlags : DWORD -> "int"
; lpdwConnection : UINT_PTR* out -> "var"
; dwReserved : DWORD optional -> "int"
; ※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 (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procInternetDialA = wininet.NewProc("InternetDialA")
)

// hwndParent (HWND), lpszConnectoid (LPSTR optional), dwFlags (DWORD), lpdwConnection (UINT_PTR* out), dwReserved (DWORD optional)
r1, _, err := procInternetDialA.Call(
	uintptr(hwndParent),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpszConnectoid))),
	uintptr(dwFlags),
	uintptr(lpdwConnection),
	uintptr(dwReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function InternetDialA(
  hwndParent: THandle;   // HWND
  lpszConnectoid: PAnsiChar;   // LPSTR optional
  dwFlags: DWORD;   // DWORD
  lpdwConnection: Pointer;   // UINT_PTR* out
  dwReserved: DWORD   // DWORD optional
): DWORD; stdcall;
  external 'WININET.dll' name 'InternetDialA';

result := DllCall("WININET\InternetDialA"
    , "Ptr", hwndParent   ; HWND
    , "AStr", lpszConnectoid   ; LPSTR optional
    , "UInt", dwFlags   ; DWORD
    , "Ptr", lpdwConnection   ; UINT_PTR* out
    , "UInt", dwReserved   ; DWORD optional
    , "UInt")   ; return: DWORD

●InternetDialA(hwndParent, lpszConnectoid, dwFlags, lpdwConnection, dwReserved) = DLL("WININET.dll", "dword InternetDialA(void*, char*, dword, void*, dword)")
# 呼び出し: InternetDialA(hwndParent, lpszConnectoid, dwFlags, lpdwConnection, dwReserved)
# hwndParent : HWND -> "void*"
# lpszConnectoid : LPSTR optional -> "char*"
# dwFlags : DWORD -> "dword"
# lpdwConnection : UINT_PTR* out -> "void*"
# dwReserved : 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)。