PrinterMessageBoxW

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

DWORD PrinterMessageBoxW(
    PRINTER_HANDLE hPrinter,
    DWORD Error,
    HWND hWnd,
    LPWSTR pText,
    LPWSTR pCaption,
    DWORD dwType
);

<DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function PrinterMessageBoxW(
    hPrinter As PRINTER_HANDLE,   ' PRINTER_HANDLE
    [Error] As UInteger,   ' DWORD
    hWnd As IntPtr,   ' HWND
    <MarshalAs(UnmanagedType.LPWStr)> pText As String,   ' LPWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pCaption As String,   ' LPWSTR
    dwType As UInteger   ' DWORD
) As UInteger
End Function

' hPrinter : PRINTER_HANDLE
' Error : DWORD
' hWnd : HWND
' pText : LPWSTR
' pCaption : LPWSTR
' dwType : DWORD
Declare PtrSafe Function PrinterMessageBoxW Lib "winspool.drv" ( _
    ByVal hPrinter As LongPtr, _
    ByVal Error As Long, _
    ByVal hWnd As LongPtr, _
    ByVal pText As LongPtr, _
    ByVal pCaption As LongPtr, _
    ByVal dwType 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

PrinterMessageBoxW = ctypes.windll.LoadLibrary("winspool.drv").PrinterMessageBoxW
PrinterMessageBoxW.restype = wintypes.DWORD
PrinterMessageBoxW.argtypes = [
    PRINTER_HANDLE,  # hPrinter : PRINTER_HANDLE
    wintypes.DWORD,  # Error : DWORD
    wintypes.HANDLE,  # hWnd : HWND
    wintypes.LPCWSTR,  # pText : LPWSTR
    wintypes.LPCWSTR,  # pCaption : LPWSTR
    wintypes.DWORD,  # dwType : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
PrinterMessageBoxW = Fiddle::Function.new(
  lib['PrinterMessageBoxW'],
  [
    Fiddle::TYPE_VOIDP,  # hPrinter : PRINTER_HANDLE
    -Fiddle::TYPE_INT,  # Error : DWORD
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_VOIDP,  # pText : LPWSTR
    Fiddle::TYPE_VOIDP,  # pCaption : LPWSTR
    -Fiddle::TYPE_INT,  # dwType : DWORD
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winspool.drv")]
extern "system" {
    fn PrinterMessageBoxW(
        hPrinter: PRINTER_HANDLE,  // PRINTER_HANDLE
        Error: u32,  // DWORD
        hWnd: *mut core::ffi::c_void,  // HWND
        pText: *mut u16,  // LPWSTR
        pCaption: *mut u16,  // LPWSTR
        dwType: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("winspool.drv", CharSet = CharSet.Unicode)]
public static extern uint PrinterMessageBoxW(PRINTER_HANDLE hPrinter, uint Error, IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)] string pText, [MarshalAs(UnmanagedType.LPWStr)] string pCaption, uint dwType);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_PrinterMessageBoxW' -Namespace Win32 -PassThru
# $api::PrinterMessageBoxW(hPrinter, Error, hWnd, pText, pCaption, dwType)

#uselib "winspool.drv"
#func global PrinterMessageBoxW "PrinterMessageBoxW" wptr, wptr, wptr, wptr, wptr, wptr
; PrinterMessageBoxW hPrinter, Error, hWnd, pText, pCaption, dwType   ; 戻り値は stat
; hPrinter : PRINTER_HANDLE -> "wptr"
; Error : DWORD -> "wptr"
; hWnd : HWND -> "wptr"
; pText : LPWSTR -> "wptr"
; pCaption : LPWSTR -> "wptr"
; dwType : 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 PrinterMessageBoxW "PrinterMessageBoxW" int, int, sptr, wstr, wstr, int
; res = PrinterMessageBoxW(hPrinter, Error, hWnd, pText, pCaption, dwType)
; hPrinter : PRINTER_HANDLE -> "int"
; Error : DWORD -> "int"
; hWnd : HWND -> "sptr"
; pText : LPWSTR -> "wstr"
; pCaption : LPWSTR -> "wstr"
; dwType : 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。

; DWORD PrinterMessageBoxW(PRINTER_HANDLE hPrinter, DWORD Error, HWND hWnd, LPWSTR pText, LPWSTR pCaption, DWORD dwType)
#uselib "winspool.drv"
#cfunc global PrinterMessageBoxW "PrinterMessageBoxW" int, int, intptr, wstr, wstr, int
; res = PrinterMessageBoxW(hPrinter, Error, hWnd, pText, pCaption, dwType)
; hPrinter : PRINTER_HANDLE -> "int"
; Error : DWORD -> "int"
; hWnd : HWND -> "intptr"
; pText : LPWSTR -> "wstr"
; pCaption : LPWSTR -> "wstr"
; dwType : 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。

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

var (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procPrinterMessageBoxW = winspool_drv.NewProc("PrinterMessageBoxW")
)

// hPrinter (PRINTER_HANDLE), Error (DWORD), hWnd (HWND), pText (LPWSTR), pCaption (LPWSTR), dwType (DWORD)
r1, _, err := procPrinterMessageBoxW.Call(
	uintptr(hPrinter),
	uintptr(Error),
	uintptr(hWnd),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pText))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pCaption))),
	uintptr(dwType),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PrinterMessageBoxW(
  hPrinter: PRINTER_HANDLE;   // PRINTER_HANDLE
  Error: DWORD;   // DWORD
  hWnd: THandle;   // HWND
  pText: PWideChar;   // LPWSTR
  pCaption: PWideChar;   // LPWSTR
  dwType: DWORD   // DWORD
): DWORD; stdcall;
  external 'winspool.drv' name 'PrinterMessageBoxW';

result := DllCall("winspool.drv\PrinterMessageBoxW"
    , "Ptr", hPrinter   ; PRINTER_HANDLE
    , "UInt", Error   ; DWORD
    , "Ptr", hWnd   ; HWND
    , "WStr", pText   ; LPWSTR
    , "WStr", pCaption   ; LPWSTR
    , "UInt", dwType   ; DWORD
    , "UInt")   ; return: DWORD

●PrinterMessageBoxW(hPrinter, Error, hWnd, pText, pCaption, dwType) = DLL("winspool.drv", "dword PrinterMessageBoxW(void*, dword, void*, char*, char*, dword)")
# 呼び出し: PrinterMessageBoxW(hPrinter, Error, hWnd, pText, pCaption, dwType)
# hPrinter : PRINTER_HANDLE -> "void*"
# Error : DWORD -> "dword"
# hWnd : HWND -> "void*"
# pText : LPWSTR -> "char*"
# pCaption : LPWSTR -> "char*"
# dwType : 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。