SetPortA

// winspool.drv  (ANSI / -A)
#include <windows.h>

BOOL SetPortA(
    LPSTR pName,   // optional
    LPSTR pPortName,
    DWORD dwLevel,
    BYTE* pPortInfo
);

<DllImport("winspool.drv", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetPortA(
    <MarshalAs(UnmanagedType.LPStr)> pName As String,   ' LPSTR optional
    <MarshalAs(UnmanagedType.LPStr)> pPortName As String,   ' LPSTR
    dwLevel As UInteger,   ' DWORD
    pPortInfo As IntPtr   ' BYTE*
) As Boolean
End Function

' pName : LPSTR optional
' pPortName : LPSTR
' dwLevel : DWORD
' pPortInfo : BYTE*
Declare PtrSafe Function SetPortA Lib "winspool.drv" ( _
    ByVal pName As String, _
    ByVal pPortName As String, _
    ByVal dwLevel As Long, _
    ByVal pPortInfo 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

SetPortA = ctypes.windll.LoadLibrary("winspool.drv").SetPortA
SetPortA.restype = wintypes.BOOL
SetPortA.argtypes = [
    wintypes.LPCSTR,  # pName : LPSTR optional
    wintypes.LPCSTR,  # pPortName : LPSTR
    wintypes.DWORD,  # dwLevel : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pPortInfo : BYTE*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
SetPortA = Fiddle::Function.new(
  lib['SetPortA'],
  [
    Fiddle::TYPE_VOIDP,  # pName : LPSTR optional
    Fiddle::TYPE_VOIDP,  # pPortName : LPSTR
    -Fiddle::TYPE_INT,  # dwLevel : DWORD
    Fiddle::TYPE_VOIDP,  # pPortInfo : BYTE*
  ],
  Fiddle::TYPE_INT)

#[link(name = "winspool.drv")]
extern "system" {
    fn SetPortA(
        pName: *mut u8,  // LPSTR optional
        pPortName: *mut u8,  // LPSTR
        dwLevel: u32,  // DWORD
        pPortInfo: *mut u8  // BYTE*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("winspool.drv", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool SetPortA([MarshalAs(UnmanagedType.LPStr)] string pName, [MarshalAs(UnmanagedType.LPStr)] string pPortName, uint dwLevel, IntPtr pPortInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_SetPortA' -Namespace Win32 -PassThru
# $api::SetPortA(pName, pPortName, dwLevel, pPortInfo)

#uselib "winspool.drv"
#func global SetPortA "SetPortA" sptr, sptr, sptr, sptr
; SetPortA pName, pPortName, dwLevel, varptr(pPortInfo)   ; 戻り値は stat
; pName : LPSTR optional -> "sptr"
; pPortName : LPSTR -> "sptr"
; dwLevel : DWORD -> "sptr"
; pPortInfo : BYTE* -> "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 "winspool.drv"
#cfunc global SetPortA "SetPortA" str, str, int, var
; res = SetPortA(pName, pPortName, dwLevel, pPortInfo)
; pName : LPSTR optional -> "str"
; pPortName : LPSTR -> "str"
; dwLevel : DWORD -> "int"
; pPortInfo : BYTE* -> "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 SetPortA(LPSTR pName, LPSTR pPortName, DWORD dwLevel, BYTE* pPortInfo)
#uselib "winspool.drv"
#cfunc global SetPortA "SetPortA" str, str, int, var
; res = SetPortA(pName, pPortName, dwLevel, pPortInfo)
; pName : LPSTR optional -> "str"
; pPortName : LPSTR -> "str"
; dwLevel : DWORD -> "int"
; pPortInfo : BYTE* -> "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 (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procSetPortA = winspool_drv.NewProc("SetPortA")
)

// pName (LPSTR optional), pPortName (LPSTR), dwLevel (DWORD), pPortInfo (BYTE*)
r1, _, err := procSetPortA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pName))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pPortName))),
	uintptr(dwLevel),
	uintptr(pPortInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetPortA(
  pName: PAnsiChar;   // LPSTR optional
  pPortName: PAnsiChar;   // LPSTR
  dwLevel: DWORD;   // DWORD
  pPortInfo: Pointer   // BYTE*
): BOOL; stdcall;
  external 'winspool.drv' name 'SetPortA';

result := DllCall("winspool.drv\SetPortA"
    , "AStr", pName   ; LPSTR optional
    , "AStr", pPortName   ; LPSTR
    , "UInt", dwLevel   ; DWORD
    , "Ptr", pPortInfo   ; BYTE*
    , "Int")   ; return: BOOL

●SetPortA(pName, pPortName, dwLevel, pPortInfo) = DLL("winspool.drv", "bool SetPortA(char*, char*, dword, void*)")
# 呼び出し: SetPortA(pName, pPortName, dwLevel, pPortInfo)
# pName : LPSTR optional -> "char*"
# pPortName : LPSTR -> "char*"
# dwLevel : DWORD -> "dword"
# pPortInfo : BYTE* -> "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)。