SetPrinterW

// winspool.drv  (Unicode / -W)
#include <windows.h>

BOOL SetPrinterW(
    PRINTER_HANDLE hPrinter,
    DWORD Level,
    BYTE* pPrinter,   // optional
    DWORD Command
);

<DllImport("winspool.drv", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetPrinterW(
    hPrinter As PRINTER_HANDLE,   ' PRINTER_HANDLE
    Level As UInteger,   ' DWORD
    pPrinter As IntPtr,   ' BYTE* optional
    Command As UInteger   ' DWORD
) As Boolean
End Function

' hPrinter : PRINTER_HANDLE
' Level : DWORD
' pPrinter : BYTE* optional
' Command : DWORD
Declare PtrSafe Function SetPrinterW Lib "winspool.drv" ( _
    ByVal hPrinter As LongPtr, _
    ByVal Level As Long, _
    ByVal pPrinter As LongPtr, _
    ByVal Command As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetPrinterW = ctypes.windll.LoadLibrary("winspool.drv").SetPrinterW
SetPrinterW.restype = wintypes.BOOL
SetPrinterW.argtypes = [
    PRINTER_HANDLE,  # hPrinter : PRINTER_HANDLE
    wintypes.DWORD,  # Level : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pPrinter : BYTE* optional
    wintypes.DWORD,  # Command : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
SetPrinterW = Fiddle::Function.new(
  lib['SetPrinterW'],
  [
    Fiddle::TYPE_VOIDP,  # hPrinter : PRINTER_HANDLE
    -Fiddle::TYPE_INT,  # Level : DWORD
    Fiddle::TYPE_VOIDP,  # pPrinter : BYTE* optional
    -Fiddle::TYPE_INT,  # Command : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winspool.drv")]
extern "system" {
    fn SetPrinterW(
        hPrinter: PRINTER_HANDLE,  // PRINTER_HANDLE
        Level: u32,  // DWORD
        pPrinter: *mut u8,  // BYTE* optional
        Command: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("winspool.drv", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool SetPrinterW(PRINTER_HANDLE hPrinter, uint Level, IntPtr pPrinter, uint Command);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_SetPrinterW' -Namespace Win32 -PassThru
# $api::SetPrinterW(hPrinter, Level, pPrinter, Command)

#uselib "winspool.drv"
#func global SetPrinterW "SetPrinterW" wptr, wptr, wptr, wptr
; SetPrinterW hPrinter, Level, varptr(pPrinter), Command   ; 戻り値は stat
; hPrinter : PRINTER_HANDLE -> "wptr"
; Level : DWORD -> "wptr"
; pPrinter : BYTE* optional -> "wptr"
; Command : DWORD -> "wptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 SetPrinterW "SetPrinterW" int, int, var, int
; res = SetPrinterW(hPrinter, Level, pPrinter, Command)
; hPrinter : PRINTER_HANDLE -> "int"
; Level : DWORD -> "int"
; pPrinter : BYTE* optional -> "var"
; Command : DWORD -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 SetPrinterW(PRINTER_HANDLE hPrinter, DWORD Level, BYTE* pPrinter, DWORD Command)
#uselib "winspool.drv"
#cfunc global SetPrinterW "SetPrinterW" int, int, var, int
; res = SetPrinterW(hPrinter, Level, pPrinter, Command)
; hPrinter : PRINTER_HANDLE -> "int"
; Level : DWORD -> "int"
; pPrinter : BYTE* optional -> "var"
; Command : DWORD -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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")
	procSetPrinterW = winspool_drv.NewProc("SetPrinterW")
)

// hPrinter (PRINTER_HANDLE), Level (DWORD), pPrinter (BYTE* optional), Command (DWORD)
r1, _, err := procSetPrinterW.Call(
	uintptr(hPrinter),
	uintptr(Level),
	uintptr(pPrinter),
	uintptr(Command),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetPrinterW(
  hPrinter: PRINTER_HANDLE;   // PRINTER_HANDLE
  Level: DWORD;   // DWORD
  pPrinter: Pointer;   // BYTE* optional
  Command: DWORD   // DWORD
): BOOL; stdcall;
  external 'winspool.drv' name 'SetPrinterW';

result := DllCall("winspool.drv\SetPrinterW"
    , "Ptr", hPrinter   ; PRINTER_HANDLE
    , "UInt", Level   ; DWORD
    , "Ptr", pPrinter   ; BYTE* optional
    , "UInt", Command   ; DWORD
    , "Int")   ; return: BOOL

●SetPrinterW(hPrinter, Level, pPrinter, Command) = DLL("winspool.drv", "bool SetPrinterW(void*, dword, void*, dword)")
# 呼び出し: SetPrinterW(hPrinter, Level, pPrinter, Command)
# hPrinter : PRINTER_HANDLE -> "void*"
# Level : DWORD -> "dword"
# pPrinter : BYTE* optional -> "void*"
# Command : 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。