RtlInitAnsiString

// ntdll.dll
#include <windows.h>

void RtlInitAnsiString(
    STRING* DestinationString,
    CHAR* SourceString
);

<DllImport("ntdll.dll", ExactSpelling:=True)>
Public Shared Sub RtlInitAnsiString(
    DestinationString As IntPtr,   ' STRING* in/out
    SourceString As IntPtr   ' CHAR* in/out
)
End Sub

' DestinationString : STRING* in/out
' SourceString : CHAR* in/out
Declare PtrSafe Sub RtlInitAnsiString Lib "ntdll" ( _
    ByVal DestinationString As LongPtr, _
    ByVal SourceString As LongPtr)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

RtlInitAnsiString = ctypes.windll.ntdll.RtlInitAnsiString
RtlInitAnsiString.restype = None
RtlInitAnsiString.argtypes = [
    ctypes.c_void_p,  # DestinationString : STRING* in/out
    ctypes.POINTER(ctypes.c_byte),  # SourceString : CHAR* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ntdll.dll')
RtlInitAnsiString = Fiddle::Function.new(
  lib['RtlInitAnsiString'],
  [
    Fiddle::TYPE_VOIDP,  # DestinationString : STRING* in/out
    Fiddle::TYPE_VOIDP,  # SourceString : CHAR* in/out
  ],
  Fiddle::TYPE_VOID)

#[link(name = "ntdll")]
extern "system" {
    fn RtlInitAnsiString(
        DestinationString: *mut STRING,  // STRING* in/out
        SourceString: *mut i8  // CHAR* in/out
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ntdll.dll")]
public static extern void RtlInitAnsiString(IntPtr DestinationString, IntPtr SourceString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ntdll_RtlInitAnsiString' -Namespace Win32 -PassThru
# $api::RtlInitAnsiString(DestinationString, SourceString)

#uselib "ntdll.dll"
#func global RtlInitAnsiString "RtlInitAnsiString" sptr, sptr
; RtlInitAnsiString varptr(DestinationString), varptr(SourceString)
; DestinationString : STRING* in/out -> "sptr"
; SourceString : CHAR* in/out -> "sptr"

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

var (
	ntdll = windows.NewLazySystemDLL("ntdll.dll")
	procRtlInitAnsiString = ntdll.NewProc("RtlInitAnsiString")
)

// DestinationString (STRING* in/out), SourceString (CHAR* in/out)
r1, _, err := procRtlInitAnsiString.Call(
	uintptr(DestinationString),
	uintptr(SourceString),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure RtlInitAnsiString(
  DestinationString: Pointer;   // STRING* in/out
  SourceString: Pointer   // CHAR* in/out
); stdcall;
  external 'ntdll.dll' name 'RtlInitAnsiString';

result := DllCall("ntdll\RtlInitAnsiString"
    , "Ptr", DestinationString   ; STRING* in/out
    , "Ptr", SourceString   ; CHAR* in/out
    , "Int")   ; return: void

●RtlInitAnsiString(DestinationString, SourceString) = DLL("ntdll.dll", "int RtlInitAnsiString(void*, void*)")
# 呼び出し: RtlInitAnsiString(DestinationString, SourceString)
# DestinationString : STRING* in/out -> "void*"
# SourceString : CHAR* 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)。

const std = @import("std");

extern "ntdll" fn RtlInitAnsiString(
    DestinationString: [*c]STRING, // STRING* in/out
    SourceString: [*c]i8 // CHAR* in/out
) callconv(std.os.windows.WINAPI) void;

proc RtlInitAnsiString(
    DestinationString: ptr STRING,  # STRING* in/out
    SourceString: ptr int8  # CHAR* in/out
) {.importc: "RtlInitAnsiString", stdcall, dynlib: "ntdll.dll".}

pragma(lib, "ntdll");
extern(Windows)
void RtlInitAnsiString(
    STRING* DestinationString,   // STRING* in/out
    byte* SourceString   // CHAR* in/out
);

ccall((:RtlInitAnsiString, "ntdll.dll"), stdcall, Cvoid,
      (Ptr{STRING}, Ptr{Int8}),
      DestinationString, SourceString)
# DestinationString : STRING* in/out -> Ptr{STRING}
# SourceString : CHAR* in/out -> Ptr{Int8}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void RtlInitAnsiString(
    void* DestinationString,
    int8_t* SourceString);
]]
local ntdll = ffi.load("ntdll")
-- ntdll.RtlInitAnsiString(DestinationString, SourceString)
-- DestinationString : STRING* in/out
-- SourceString : CHAR* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('ntdll.dll');
const RtlInitAnsiString = lib.func('__stdcall', 'RtlInitAnsiString', 'void', ['void *', 'int8_t *']);
// RtlInitAnsiString(DestinationString, SourceString)
// DestinationString : STRING* in/out -> 'void *'
// SourceString : CHAR* in/out -> 'int8_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("ntdll.dll", {
  RtlInitAnsiString: { parameters: ["pointer", "pointer"], result: "void" },
});
// lib.symbols.RtlInitAnsiString(DestinationString, SourceString)
// DestinationString : STRING* in/out -> "pointer"
// SourceString : CHAR* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void RtlInitAnsiString(
    void* DestinationString,
    int8_t* SourceString);
C, "ntdll.dll");
// $ffi->RtlInitAnsiString(DestinationString, SourceString);
// DestinationString : STRING* in/out
// SourceString : CHAR* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Ntdll extends StdCallLibrary {
    Ntdll INSTANCE = Native.load("ntdll", Ntdll.class);
    void RtlInitAnsiString(
        Pointer DestinationString,   // STRING* in/out
        byte[] SourceString   // CHAR* in/out
    );
}

@[Link("ntdll")]
lib Libntdll
  fun RtlInitAnsiString = RtlInitAnsiString(
    DestinationString : STRING*,   # STRING* in/out
    SourceString : Int8*   # CHAR* in/out
  ) : Void
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef RtlInitAnsiStringNative = Void Function(Pointer<Void>, Pointer<Int8>);
typedef RtlInitAnsiStringDart = void Function(Pointer<Void>, Pointer<Int8>);
final RtlInitAnsiString = DynamicLibrary.open('ntdll.dll')
    .lookupFunction<RtlInitAnsiStringNative, RtlInitAnsiStringDart>('RtlInitAnsiString');
// DestinationString : STRING* in/out -> Pointer<Void>
// SourceString : CHAR* in/out -> Pointer<Int8>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure RtlInitAnsiString(
  DestinationString: Pointer;   // STRING* in/out
  SourceString: Pointer   // CHAR* in/out
); stdcall;
  external 'ntdll.dll' name 'RtlInitAnsiString';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "RtlInitAnsiString"
  c_RtlInitAnsiString :: Ptr () -> Ptr Int8 -> IO ()
-- DestinationString : STRING* in/out -> Ptr ()
-- SourceString : CHAR* in/out -> Ptr Int8
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let rtlinitansistring =
  foreign "RtlInitAnsiString"
    ((ptr void) @-> (ptr int8_t) @-> returning void)
(* DestinationString : STRING* in/out -> (ptr void) *)
(* SourceString : CHAR* in/out -> (ptr int8_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library ntdll (t "ntdll.dll"))
(cffi:use-foreign-library ntdll)

(cffi:defcfun ("RtlInitAnsiString" rtl-init-ansi-string :convention :stdcall) :void
  (destination-string :pointer)   ; STRING* in/out
  (source-string :pointer))   ; CHAR* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $RtlInitAnsiString = Win32::API::More->new('ntdll',
    'void RtlInitAnsiString(LPVOID DestinationString, LPVOID SourceString)');
# my $ret = $RtlInitAnsiString->Call($DestinationString, $SourceString);
# DestinationString : STRING* in/out -> LPVOID
# SourceString : CHAR* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。