lstrcpynA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

LPSTR lstrcpynA(
    LPSTR lpString1,
    LPCSTR lpString2,
    INT iMaxLength
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function lstrcpynA(
    <MarshalAs(UnmanagedType.LPStr)> lpString1 As System.Text.StringBuilder,   ' LPSTR out
    <MarshalAs(UnmanagedType.LPStr)> lpString2 As String,   ' LPCSTR
    iMaxLength As Integer   ' INT
) As IntPtr
End Function

' lpString1 : LPSTR out
' lpString2 : LPCSTR
' iMaxLength : INT
Declare PtrSafe Function lstrcpynA Lib "kernel32" ( _
    ByVal lpString1 As String, _
    ByVal lpString2 As String, _
    ByVal iMaxLength 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

lstrcpynA = ctypes.windll.kernel32.lstrcpynA
lstrcpynA.restype = wintypes.LPSTR
lstrcpynA.argtypes = [
    wintypes.LPSTR,  # lpString1 : LPSTR out
    wintypes.LPCSTR,  # lpString2 : LPCSTR
    ctypes.c_int,  # iMaxLength : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
lstrcpynA = Fiddle::Function.new(
  lib['lstrcpynA'],
  [
    Fiddle::TYPE_VOIDP,  # lpString1 : LPSTR out
    Fiddle::TYPE_VOIDP,  # lpString2 : LPCSTR
    Fiddle::TYPE_INT,  # iMaxLength : INT
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn lstrcpynA(
        lpString1: *mut u8,  // LPSTR out
        lpString2: *const u8,  // LPCSTR
        iMaxLength: i32  // INT
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr lstrcpynA([MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpString1, [MarshalAs(UnmanagedType.LPStr)] string lpString2, int iMaxLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_lstrcpynA' -Namespace Win32 -PassThru
# $api::lstrcpynA(lpString1, lpString2, iMaxLength)

#uselib "KERNEL32.dll"
#func global lstrcpynA "lstrcpynA" sptr, sptr, sptr
; lstrcpynA varptr(lpString1), lpString2, iMaxLength   ; 戻り値は stat
; lpString1 : LPSTR out -> "sptr"
; lpString2 : LPCSTR -> "sptr"
; iMaxLength : INT -> "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 "KERNEL32.dll"
#cfunc global lstrcpynA "lstrcpynA" var, str, int
; res = lstrcpynA(lpString1, lpString2, iMaxLength)
; lpString1 : LPSTR out -> "var"
; lpString2 : LPCSTR -> "str"
; iMaxLength : INT -> "int"
; ※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。

; LPSTR lstrcpynA(LPSTR lpString1, LPCSTR lpString2, INT iMaxLength)
#uselib "KERNEL32.dll"
#cfunc global lstrcpynA "lstrcpynA" var, str, int
; res = lstrcpynA(lpString1, lpString2, iMaxLength)
; lpString1 : LPSTR out -> "var"
; lpString2 : LPCSTR -> "str"
; iMaxLength : INT -> "int"
; ※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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	proclstrcpynA = kernel32.NewProc("lstrcpynA")
)

// lpString1 (LPSTR out), lpString2 (LPCSTR), iMaxLength (INT)
r1, _, err := proclstrcpynA.Call(
	uintptr(lpString1),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpString2))),
	uintptr(iMaxLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function lstrcpynA(
  lpString1: PAnsiChar;   // LPSTR out
  lpString2: PAnsiChar;   // LPCSTR
  iMaxLength: Integer   // INT
): PAnsiChar; stdcall;
  external 'KERNEL32.dll' name 'lstrcpynA';

result := DllCall("KERNEL32\lstrcpynA"
    , "Ptr", lpString1   ; LPSTR out
    , "AStr", lpString2   ; LPCSTR
    , "Int", iMaxLength   ; INT
    , "Ptr")   ; return: LPSTR

●lstrcpynA(lpString1, lpString2, iMaxLength) = DLL("KERNEL32.dll", "char* lstrcpynA(char*, char*, int)")
# 呼び出し: lstrcpynA(lpString1, lpString2, iMaxLength)
# lpString1 : LPSTR out -> "char*"
# lpString2 : LPCSTR -> "char*"
# iMaxLength : INT -> "int"
# 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)。