cldap_openA

// WLDAP32.dll  (ANSI / -A)
#include <windows.h>

LDAP* cldap_openA(
    LPSTR HostName,
    DWORD PortNumber
);

<DllImport("WLDAP32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function cldap_openA(
    <MarshalAs(UnmanagedType.LPStr)> HostName As String,   ' LPSTR
    PortNumber As UInteger   ' DWORD
) As IntPtr
End Function

' HostName : LPSTR
' PortNumber : DWORD
Declare PtrSafe Function cldap_openA Lib "wldap32" ( _
    ByVal HostName As String, _
    ByVal PortNumber As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

cldap_openA = ctypes.cdll.wldap32.cldap_openA
cldap_openA.restype = ctypes.c_void_p
cldap_openA.argtypes = [
    wintypes.LPCSTR,  # HostName : LPSTR
    wintypes.DWORD,  # PortNumber : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WLDAP32.dll')
cldap_openA = Fiddle::Function.new(
  lib['cldap_openA'],
  [
    Fiddle::TYPE_VOIDP,  # HostName : LPSTR
    -Fiddle::TYPE_INT,  # PortNumber : DWORD
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "wldap32")]
extern "C" {
    fn cldap_openA(
        HostName: *mut u8,  // LPSTR
        PortNumber: u32  // DWORD
    ) -> *mut LDAP;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WLDAP32.dll", CharSet = CharSet.Ansi, SetLastError = true, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr cldap_openA([MarshalAs(UnmanagedType.LPStr)] string HostName, uint PortNumber);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WLDAP32_cldap_openA' -Namespace Win32 -PassThru
# $api::cldap_openA(HostName, PortNumber)

#uselib "WLDAP32.dll"
#func global cldap_openA "cldap_openA" sptr, sptr
; cldap_openA HostName, PortNumber   ; 戻り値は stat
; HostName : LPSTR -> "sptr"
; PortNumber : DWORD -> "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 "WLDAP32.dll"
#cfunc global cldap_openA "cldap_openA" str, int
; res = cldap_openA(HostName, PortNumber)
; HostName : LPSTR -> "str"
; PortNumber : DWORD -> "int"

; LDAP* cldap_openA(LPSTR HostName, DWORD PortNumber)
#uselib "WLDAP32.dll"
#cfunc global cldap_openA "cldap_openA" str, int
; res = cldap_openA(HostName, PortNumber)
; HostName : LPSTR -> "str"
; PortNumber : DWORD -> "int"

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

var (
	wldap32 = windows.NewLazySystemDLL("WLDAP32.dll")
	proccldap_openA = wldap32.NewProc("cldap_openA")
)

// HostName (LPSTR), PortNumber (DWORD)
r1, _, err := proccldap_openA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(HostName))),
	uintptr(PortNumber),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LDAP*

function cldap_openA(
  HostName: PAnsiChar;   // LPSTR
  PortNumber: DWORD   // DWORD
): Pointer; cdecl;
  external 'WLDAP32.dll' name 'cldap_openA';

result := DllCall("WLDAP32\cldap_openA"
    , "AStr", HostName   ; LPSTR
    , "UInt", PortNumber   ; DWORD
    , "Cdecl Ptr")   ; return: LDAP*

●cldap_openA(HostName, PortNumber) = DLL("WLDAP32.dll", "void* cldap_openA(char*, dword)")
# 呼び出し: cldap_openA(HostName, PortNumber)
# HostName : LPSTR -> "char*"
# PortNumber : DWORD -> "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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。