CredMarshalCredentialA

// ADVAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL CredMarshalCredentialA(
    CRED_MARSHAL_TYPE CredType,
    void* Credential,
    LPSTR* MarshaledCredential
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CredMarshalCredentialA(
    CredType As Integer,   ' CRED_MARSHAL_TYPE
    Credential As IntPtr,   ' void*
    MarshaledCredential As IntPtr   ' LPSTR* out
) As Boolean
End Function

' CredType : CRED_MARSHAL_TYPE
' Credential : void*
' MarshaledCredential : LPSTR* out
Declare PtrSafe Function CredMarshalCredentialA Lib "advapi32" ( _
    ByVal CredType As Long, _
    ByVal Credential As LongPtr, _
    ByVal MarshaledCredential 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

CredMarshalCredentialA = ctypes.windll.advapi32.CredMarshalCredentialA
CredMarshalCredentialA.restype = wintypes.BOOL
CredMarshalCredentialA.argtypes = [
    ctypes.c_int,  # CredType : CRED_MARSHAL_TYPE
    ctypes.POINTER(None),  # Credential : void*
    ctypes.c_void_p,  # MarshaledCredential : LPSTR* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CredMarshalCredentialA = Fiddle::Function.new(
  lib['CredMarshalCredentialA'],
  [
    Fiddle::TYPE_INT,  # CredType : CRED_MARSHAL_TYPE
    Fiddle::TYPE_VOIDP,  # Credential : void*
    Fiddle::TYPE_VOIDP,  # MarshaledCredential : LPSTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn CredMarshalCredentialA(
        CredType: i32,  // CRED_MARSHAL_TYPE
        Credential: *mut (),  // void*
        MarshaledCredential: *mut *mut u8  // LPSTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool CredMarshalCredentialA(int CredType, IntPtr Credential, IntPtr MarshaledCredential);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CredMarshalCredentialA' -Namespace Win32 -PassThru
# $api::CredMarshalCredentialA(CredType, Credential, MarshaledCredential)

#uselib "ADVAPI32.dll"
#func global CredMarshalCredentialA "CredMarshalCredentialA" sptr, sptr, sptr
; CredMarshalCredentialA CredType, Credential, varptr(MarshaledCredential)   ; 戻り値は stat
; CredType : CRED_MARSHAL_TYPE -> "sptr"
; Credential : void* -> "sptr"
; MarshaledCredential : LPSTR* 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 "ADVAPI32.dll"
#cfunc global CredMarshalCredentialA "CredMarshalCredentialA" int, sptr, var
; res = CredMarshalCredentialA(CredType, Credential, MarshaledCredential)
; CredType : CRED_MARSHAL_TYPE -> "int"
; Credential : void* -> "sptr"
; MarshaledCredential : LPSTR* 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。

; BOOL CredMarshalCredentialA(CRED_MARSHAL_TYPE CredType, void* Credential, LPSTR* MarshaledCredential)
#uselib "ADVAPI32.dll"
#cfunc global CredMarshalCredentialA "CredMarshalCredentialA" int, intptr, var
; res = CredMarshalCredentialA(CredType, Credential, MarshaledCredential)
; CredType : CRED_MARSHAL_TYPE -> "int"
; Credential : void* -> "intptr"
; MarshaledCredential : LPSTR* 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 (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCredMarshalCredentialA = advapi32.NewProc("CredMarshalCredentialA")
)

// CredType (CRED_MARSHAL_TYPE), Credential (void*), MarshaledCredential (LPSTR* out)
r1, _, err := procCredMarshalCredentialA.Call(
	uintptr(CredType),
	uintptr(Credential),
	uintptr(MarshaledCredential),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CredMarshalCredentialA(
  CredType: Integer;   // CRED_MARSHAL_TYPE
  Credential: Pointer;   // void*
  MarshaledCredential: PPAnsiChar   // LPSTR* out
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'CredMarshalCredentialA';

result := DllCall("ADVAPI32\CredMarshalCredentialA"
    , "Int", CredType   ; CRED_MARSHAL_TYPE
    , "Ptr", Credential   ; void*
    , "Ptr", MarshaledCredential   ; LPSTR* out
    , "Int")   ; return: BOOL

●CredMarshalCredentialA(CredType, Credential, MarshaledCredential) = DLL("ADVAPI32.dll", "bool CredMarshalCredentialA(int, void*, void*)")
# 呼び出し: CredMarshalCredentialA(CredType, Credential, MarshaledCredential)
# CredType : CRED_MARSHAL_TYPE -> "int"
# Credential : void* -> "void*"
# MarshaledCredential : LPSTR* 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)。