DeviceCapabilitiesW

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

INT DeviceCapabilitiesW(
    LPCWSTR pDevice,
    LPCWSTR pPort,   // optional
    PRINTER_DEVICE_CAPABILITIES fwCapability,
    LPWSTR pOutput,   // optional
    const DEVMODEW* pDevMode   // optional
);

<DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function DeviceCapabilitiesW(
    <MarshalAs(UnmanagedType.LPWStr)> pDevice As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pPort As String,   ' LPCWSTR optional
    fwCapability As UShort,   ' PRINTER_DEVICE_CAPABILITIES
    <MarshalAs(UnmanagedType.LPWStr)> pOutput As System.Text.StringBuilder,   ' LPWSTR optional, out
    pDevMode As IntPtr   ' DEVMODEW* optional
) As Integer
End Function

' pDevice : LPCWSTR
' pPort : LPCWSTR optional
' fwCapability : PRINTER_DEVICE_CAPABILITIES
' pOutput : LPWSTR optional, out
' pDevMode : DEVMODEW* optional
Declare PtrSafe Function DeviceCapabilitiesW Lib "winspool.drv" ( _
    ByVal pDevice As LongPtr, _
    ByVal pPort As LongPtr, _
    ByVal fwCapability As Integer, _
    ByVal pOutput As LongPtr, _
    ByVal pDevMode As LongPtr) 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

DeviceCapabilitiesW = ctypes.windll.LoadLibrary("winspool.drv").DeviceCapabilitiesW
DeviceCapabilitiesW.restype = ctypes.c_int
DeviceCapabilitiesW.argtypes = [
    wintypes.LPCWSTR,  # pDevice : LPCWSTR
    wintypes.LPCWSTR,  # pPort : LPCWSTR optional
    ctypes.c_ushort,  # fwCapability : PRINTER_DEVICE_CAPABILITIES
    wintypes.LPWSTR,  # pOutput : LPWSTR optional, out
    ctypes.c_void_p,  # pDevMode : DEVMODEW* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
DeviceCapabilitiesW = Fiddle::Function.new(
  lib['DeviceCapabilitiesW'],
  [
    Fiddle::TYPE_VOIDP,  # pDevice : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pPort : LPCWSTR optional
    -Fiddle::TYPE_SHORT,  # fwCapability : PRINTER_DEVICE_CAPABILITIES
    Fiddle::TYPE_VOIDP,  # pOutput : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # pDevMode : DEVMODEW* optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winspool.drv")]
extern "system" {
    fn DeviceCapabilitiesW(
        pDevice: *const u16,  // LPCWSTR
        pPort: *const u16,  // LPCWSTR optional
        fwCapability: u16,  // PRINTER_DEVICE_CAPABILITIES
        pOutput: *mut u16,  // LPWSTR optional, out
        pDevMode: *const DEVMODEW  // DEVMODEW* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("winspool.drv", CharSet = CharSet.Unicode)]
public static extern int DeviceCapabilitiesW([MarshalAs(UnmanagedType.LPWStr)] string pDevice, [MarshalAs(UnmanagedType.LPWStr)] string pPort, ushort fwCapability, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder pOutput, IntPtr pDevMode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_DeviceCapabilitiesW' -Namespace Win32 -PassThru
# $api::DeviceCapabilitiesW(pDevice, pPort, fwCapability, pOutput, pDevMode)

#uselib "winspool.drv"
#func global DeviceCapabilitiesW "DeviceCapabilitiesW" wptr, wptr, wptr, wptr, wptr
; DeviceCapabilitiesW pDevice, pPort, fwCapability, varptr(pOutput), varptr(pDevMode)   ; 戻り値は stat
; pDevice : LPCWSTR -> "wptr"
; pPort : LPCWSTR optional -> "wptr"
; fwCapability : PRINTER_DEVICE_CAPABILITIES -> "wptr"
; pOutput : LPWSTR optional, out -> "wptr"
; pDevMode : DEVMODEW* optional -> "wptr"
; ※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 DeviceCapabilitiesW "DeviceCapabilitiesW" wstr, wstr, int, var, var
; res = DeviceCapabilitiesW(pDevice, pPort, fwCapability, pOutput, pDevMode)
; pDevice : LPCWSTR -> "wstr"
; pPort : LPCWSTR optional -> "wstr"
; fwCapability : PRINTER_DEVICE_CAPABILITIES -> "int"
; pOutput : LPWSTR optional, out -> "var"
; pDevMode : DEVMODEW* optional -> "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。

; INT DeviceCapabilitiesW(LPCWSTR pDevice, LPCWSTR pPort, PRINTER_DEVICE_CAPABILITIES fwCapability, LPWSTR pOutput, DEVMODEW* pDevMode)
#uselib "winspool.drv"
#cfunc global DeviceCapabilitiesW "DeviceCapabilitiesW" wstr, wstr, int, var, var
; res = DeviceCapabilitiesW(pDevice, pPort, fwCapability, pOutput, pDevMode)
; pDevice : LPCWSTR -> "wstr"
; pPort : LPCWSTR optional -> "wstr"
; fwCapability : PRINTER_DEVICE_CAPABILITIES -> "int"
; pOutput : LPWSTR optional, out -> "var"
; pDevMode : DEVMODEW* optional -> "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")
	procDeviceCapabilitiesW = winspool_drv.NewProc("DeviceCapabilitiesW")
)

// pDevice (LPCWSTR), pPort (LPCWSTR optional), fwCapability (PRINTER_DEVICE_CAPABILITIES), pOutput (LPWSTR optional, out), pDevMode (DEVMODEW* optional)
r1, _, err := procDeviceCapabilitiesW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pDevice))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pPort))),
	uintptr(fwCapability),
	uintptr(pOutput),
	uintptr(pDevMode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function DeviceCapabilitiesW(
  pDevice: PWideChar;   // LPCWSTR
  pPort: PWideChar;   // LPCWSTR optional
  fwCapability: Word;   // PRINTER_DEVICE_CAPABILITIES
  pOutput: PWideChar;   // LPWSTR optional, out
  pDevMode: Pointer   // DEVMODEW* optional
): Integer; stdcall;
  external 'winspool.drv' name 'DeviceCapabilitiesW';

result := DllCall("winspool.drv\DeviceCapabilitiesW"
    , "WStr", pDevice   ; LPCWSTR
    , "WStr", pPort   ; LPCWSTR optional
    , "UShort", fwCapability   ; PRINTER_DEVICE_CAPABILITIES
    , "Ptr", pOutput   ; LPWSTR optional, out
    , "Ptr", pDevMode   ; DEVMODEW* optional
    , "Int")   ; return: INT

●DeviceCapabilitiesW(pDevice, pPort, fwCapability, pOutput, pDevMode) = DLL("winspool.drv", "int DeviceCapabilitiesW(char*, char*, int, char*, void*)")
# 呼び出し: DeviceCapabilitiesW(pDevice, pPort, fwCapability, pOutput, pDevMode)
# pDevice : LPCWSTR -> "char*"
# pPort : LPCWSTR optional -> "char*"
# fwCapability : PRINTER_DEVICE_CAPABILITIES -> "int"
# pOutput : LPWSTR optional, out -> "char*"
# pDevMode : DEVMODEW* optional -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。