GopherOpenFileA

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

void* GopherOpenFileA(
    void* hConnect,
    LPCSTR lpszLocator,
    LPCSTR lpszView,   // optional
    DWORD dwFlags,
    UINT_PTR dwContext   // optional
);

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

' hConnect : void*
' lpszLocator : LPCSTR
' lpszView : LPCSTR optional
' dwFlags : DWORD
' dwContext : UINT_PTR optional
Declare PtrSafe Function GopherOpenFileA Lib "wininet" ( _
    ByVal hConnect As LongPtr, _
    ByVal lpszLocator As String, _
    ByVal lpszView As String, _
    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

GopherOpenFileA = ctypes.windll.wininet.GopherOpenFileA
GopherOpenFileA.restype = ctypes.c_void_p
GopherOpenFileA.argtypes = [
    ctypes.POINTER(None),  # hConnect : void*
    wintypes.LPCSTR,  # lpszLocator : LPCSTR
    wintypes.LPCSTR,  # lpszView : LPCSTR optional
    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')
GopherOpenFileA = Fiddle::Function.new(
  lib['GopherOpenFileA'],
  [
    Fiddle::TYPE_VOIDP,  # hConnect : void*
    Fiddle::TYPE_VOIDP,  # lpszLocator : LPCSTR
    Fiddle::TYPE_VOIDP,  # lpszView : LPCSTR optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_UINTPTR_T,  # dwContext : UINT_PTR optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "wininet")]
extern "system" {
    fn GopherOpenFileA(
        hConnect: *mut (),  // void*
        lpszLocator: *const u8,  // LPCSTR
        lpszView: *const u8,  // LPCSTR optional
        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 GopherOpenFileA(IntPtr hConnect, [MarshalAs(UnmanagedType.LPStr)] string lpszLocator, [MarshalAs(UnmanagedType.LPStr)] string lpszView, uint dwFlags, UIntPtr dwContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_GopherOpenFileA' -Namespace Win32 -PassThru
# $api::GopherOpenFileA(hConnect, lpszLocator, lpszView, dwFlags, dwContext)

#uselib "WININET.dll"
#func global GopherOpenFileA "GopherOpenFileA" sptr, sptr, sptr, sptr, sptr
; GopherOpenFileA hConnect, lpszLocator, lpszView, dwFlags, dwContext   ; 戻り値は stat
; hConnect : void* -> "sptr"
; lpszLocator : LPCSTR -> "sptr"
; lpszView : LPCSTR optional -> "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 GopherOpenFileA "GopherOpenFileA" sptr, str, str, int, sptr
; res = GopherOpenFileA(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
; hConnect : void* -> "sptr"
; lpszLocator : LPCSTR -> "str"
; lpszView : LPCSTR optional -> "str"
; dwFlags : DWORD -> "int"
; dwContext : UINT_PTR optional -> "sptr"

; void* GopherOpenFileA(void* hConnect, LPCSTR lpszLocator, LPCSTR lpszView, DWORD dwFlags, UINT_PTR dwContext)
#uselib "WININET.dll"
#cfunc global GopherOpenFileA "GopherOpenFileA" intptr, str, str, int, intptr
; res = GopherOpenFileA(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
; hConnect : void* -> "intptr"
; lpszLocator : LPCSTR -> "str"
; lpszView : LPCSTR optional -> "str"
; dwFlags : DWORD -> "int"
; dwContext : UINT_PTR optional -> "intptr"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procGopherOpenFileA = wininet.NewProc("GopherOpenFileA")
)

// hConnect (void*), lpszLocator (LPCSTR), lpszView (LPCSTR optional), dwFlags (DWORD), dwContext (UINT_PTR optional)
r1, _, err := procGopherOpenFileA.Call(
	uintptr(hConnect),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpszLocator))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpszView))),
	uintptr(dwFlags),
	uintptr(dwContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function GopherOpenFileA(
  hConnect: Pointer;   // void*
  lpszLocator: PAnsiChar;   // LPCSTR
  lpszView: PAnsiChar;   // LPCSTR optional
  dwFlags: DWORD;   // DWORD
  dwContext: NativeUInt   // UINT_PTR optional
): Pointer; stdcall;
  external 'WININET.dll' name 'GopherOpenFileA';

result := DllCall("WININET\GopherOpenFileA"
    , "Ptr", hConnect   ; void*
    , "AStr", lpszLocator   ; LPCSTR
    , "AStr", lpszView   ; LPCSTR optional
    , "UInt", dwFlags   ; DWORD
    , "UPtr", dwContext   ; UINT_PTR optional
    , "Ptr")   ; return: void*

●GopherOpenFileA(hConnect, lpszLocator, lpszView, dwFlags, dwContext) = DLL("WININET.dll", "void* GopherOpenFileA(void*, char*, char*, dword, int)")
# 呼び出し: GopherOpenFileA(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
# hConnect : void* -> "void*"
# lpszLocator : LPCSTR -> "char*"
# lpszView : LPCSTR optional -> "char*"
# 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)。