WNetGetNetworkInformationA

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

WIN32_ERROR WNetGetNetworkInformationA(
    LPCSTR lpProvider,
    NETINFOSTRUCT* lpNetInfoStruct
);

<DllImport("MPR.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function WNetGetNetworkInformationA(
    <MarshalAs(UnmanagedType.LPStr)> lpProvider As String,   ' LPCSTR
    lpNetInfoStruct As IntPtr   ' NETINFOSTRUCT* out
) As UInteger
End Function

' lpProvider : LPCSTR
' lpNetInfoStruct : NETINFOSTRUCT* out
Declare PtrSafe Function WNetGetNetworkInformationA Lib "mpr" ( _
    ByVal lpProvider As String, _
    ByVal lpNetInfoStruct 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

WNetGetNetworkInformationA = ctypes.windll.mpr.WNetGetNetworkInformationA
WNetGetNetworkInformationA.restype = wintypes.DWORD
WNetGetNetworkInformationA.argtypes = [
    wintypes.LPCSTR,  # lpProvider : LPCSTR
    ctypes.c_void_p,  # lpNetInfoStruct : NETINFOSTRUCT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MPR.dll')
WNetGetNetworkInformationA = Fiddle::Function.new(
  lib['WNetGetNetworkInformationA'],
  [
    Fiddle::TYPE_VOIDP,  # lpProvider : LPCSTR
    Fiddle::TYPE_VOIDP,  # lpNetInfoStruct : NETINFOSTRUCT* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "mpr")]
extern "system" {
    fn WNetGetNetworkInformationA(
        lpProvider: *const u8,  // LPCSTR
        lpNetInfoStruct: *mut NETINFOSTRUCT  // NETINFOSTRUCT* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MPR.dll", CharSet = CharSet.Ansi)]
public static extern uint WNetGetNetworkInformationA([MarshalAs(UnmanagedType.LPStr)] string lpProvider, IntPtr lpNetInfoStruct);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MPR_WNetGetNetworkInformationA' -Namespace Win32 -PassThru
# $api::WNetGetNetworkInformationA(lpProvider, lpNetInfoStruct)

#uselib "MPR.dll"
#func global WNetGetNetworkInformationA "WNetGetNetworkInformationA" sptr, sptr
; WNetGetNetworkInformationA lpProvider, varptr(lpNetInfoStruct)   ; 戻り値は stat
; lpProvider : LPCSTR -> "sptr"
; lpNetInfoStruct : NETINFOSTRUCT* 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 "MPR.dll"
#cfunc global WNetGetNetworkInformationA "WNetGetNetworkInformationA" str, var
; res = WNetGetNetworkInformationA(lpProvider, lpNetInfoStruct)
; lpProvider : LPCSTR -> "str"
; lpNetInfoStruct : NETINFOSTRUCT* 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。

; WIN32_ERROR WNetGetNetworkInformationA(LPCSTR lpProvider, NETINFOSTRUCT* lpNetInfoStruct)
#uselib "MPR.dll"
#cfunc global WNetGetNetworkInformationA "WNetGetNetworkInformationA" str, var
; res = WNetGetNetworkInformationA(lpProvider, lpNetInfoStruct)
; lpProvider : LPCSTR -> "str"
; lpNetInfoStruct : NETINFOSTRUCT* 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 (
	mpr = windows.NewLazySystemDLL("MPR.dll")
	procWNetGetNetworkInformationA = mpr.NewProc("WNetGetNetworkInformationA")
)

// lpProvider (LPCSTR), lpNetInfoStruct (NETINFOSTRUCT* out)
r1, _, err := procWNetGetNetworkInformationA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpProvider))),
	uintptr(lpNetInfoStruct),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function WNetGetNetworkInformationA(
  lpProvider: PAnsiChar;   // LPCSTR
  lpNetInfoStruct: Pointer   // NETINFOSTRUCT* out
): DWORD; stdcall;
  external 'MPR.dll' name 'WNetGetNetworkInformationA';

result := DllCall("MPR\WNetGetNetworkInformationA"
    , "AStr", lpProvider   ; LPCSTR
    , "Ptr", lpNetInfoStruct   ; NETINFOSTRUCT* out
    , "UInt")   ; return: WIN32_ERROR

●WNetGetNetworkInformationA(lpProvider, lpNetInfoStruct) = DLL("MPR.dll", "dword WNetGetNetworkInformationA(char*, void*)")
# 呼び出し: WNetGetNetworkInformationA(lpProvider, lpNetInfoStruct)
# lpProvider : LPCSTR -> "char*"
# lpNetInfoStruct : NETINFOSTRUCT* 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)。