RasGetProjectionInfoA

// RASAPI32.dll  (ANSI / -A)
#include <windows.h>

DWORD RasGetProjectionInfoA(
    HRASCONN param0,
    RASPROJECTION param1,
    void* param2,
    DWORD* param3
);

<DllImport("RASAPI32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function RasGetProjectionInfoA(
    param0 As IntPtr,   ' HRASCONN
    param1 As Integer,   ' RASPROJECTION
    param2 As IntPtr,   ' void* out
    ByRef param3 As UInteger   ' DWORD* in/out
) As UInteger
End Function

' param0 : HRASCONN
' param1 : RASPROJECTION
' param2 : void* out
' param3 : DWORD* in/out
Declare PtrSafe Function RasGetProjectionInfoA Lib "rasapi32" ( _
    ByVal param0 As LongPtr, _
    ByVal param1 As Long, _
    ByVal param2 As LongPtr, _
    ByRef param3 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

RasGetProjectionInfoA = ctypes.windll.rasapi32.RasGetProjectionInfoA
RasGetProjectionInfoA.restype = wintypes.DWORD
RasGetProjectionInfoA.argtypes = [
    wintypes.HANDLE,  # param0 : HRASCONN
    ctypes.c_int,  # param1 : RASPROJECTION
    ctypes.POINTER(None),  # param2 : void* out
    ctypes.POINTER(wintypes.DWORD),  # param3 : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RASAPI32.dll')
RasGetProjectionInfoA = Fiddle::Function.new(
  lib['RasGetProjectionInfoA'],
  [
    Fiddle::TYPE_VOIDP,  # param0 : HRASCONN
    Fiddle::TYPE_INT,  # param1 : RASPROJECTION
    Fiddle::TYPE_VOIDP,  # param2 : void* out
    Fiddle::TYPE_VOIDP,  # param3 : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "rasapi32")]
extern "system" {
    fn RasGetProjectionInfoA(
        param0: *mut core::ffi::c_void,  // HRASCONN
        param1: i32,  // RASPROJECTION
        param2: *mut (),  // void* out
        param3: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("RASAPI32.dll", CharSet = CharSet.Ansi)]
public static extern uint RasGetProjectionInfoA(IntPtr param0, int param1, IntPtr param2, ref uint param3);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RASAPI32_RasGetProjectionInfoA' -Namespace Win32 -PassThru
# $api::RasGetProjectionInfoA(param0, param1, param2, param3)

#uselib "RASAPI32.dll"
#func global RasGetProjectionInfoA "RasGetProjectionInfoA" sptr, sptr, sptr, sptr
; RasGetProjectionInfoA param0, param1, param2, varptr(param3)   ; 戻り値は stat
; param0 : HRASCONN -> "sptr"
; param1 : RASPROJECTION -> "sptr"
; param2 : void* out -> "sptr"
; param3 : DWORD* in/out -> "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 "RASAPI32.dll"
#cfunc global RasGetProjectionInfoA "RasGetProjectionInfoA" sptr, int, sptr, var
; res = RasGetProjectionInfoA(param0, param1, param2, param3)
; param0 : HRASCONN -> "sptr"
; param1 : RASPROJECTION -> "int"
; param2 : void* out -> "sptr"
; param3 : DWORD* 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。

; DWORD RasGetProjectionInfoA(HRASCONN param0, RASPROJECTION param1, void* param2, DWORD* param3)
#uselib "RASAPI32.dll"
#cfunc global RasGetProjectionInfoA "RasGetProjectionInfoA" intptr, int, intptr, var
; res = RasGetProjectionInfoA(param0, param1, param2, param3)
; param0 : HRASCONN -> "intptr"
; param1 : RASPROJECTION -> "int"
; param2 : void* out -> "intptr"
; param3 : DWORD* 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 (
	rasapi32 = windows.NewLazySystemDLL("RASAPI32.dll")
	procRasGetProjectionInfoA = rasapi32.NewProc("RasGetProjectionInfoA")
)

// param0 (HRASCONN), param1 (RASPROJECTION), param2 (void* out), param3 (DWORD* in/out)
r1, _, err := procRasGetProjectionInfoA.Call(
	uintptr(param0),
	uintptr(param1),
	uintptr(param2),
	uintptr(param3),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function RasGetProjectionInfoA(
  param0: THandle;   // HRASCONN
  param1: Integer;   // RASPROJECTION
  param2: Pointer;   // void* out
  param3: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'RASAPI32.dll' name 'RasGetProjectionInfoA';

result := DllCall("RASAPI32\RasGetProjectionInfoA"
    , "Ptr", param0   ; HRASCONN
    , "Int", param1   ; RASPROJECTION
    , "Ptr", param2   ; void* out
    , "Ptr", param3   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●RasGetProjectionInfoA(param0, param1, param2, param3) = DLL("RASAPI32.dll", "dword RasGetProjectionInfoA(void*, int, void*, void*)")
# 呼び出し: RasGetProjectionInfoA(param0, param1, param2, param3)
# param0 : HRASCONN -> "void*"
# param1 : RASPROJECTION -> "int"
# param2 : void* out -> "void*"
# param3 : DWORD* 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)。