GetPrinterDataA

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

DWORD GetPrinterDataA(
    PRINTER_HANDLE hPrinter,
    LPCSTR pValueName,
    DWORD* pType,   // optional
    BYTE* pData,   // optional
    DWORD nSize,
    DWORD* pcbNeeded
);

<DllImport("winspool.drv", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetPrinterDataA(
    hPrinter As PRINTER_HANDLE,   ' PRINTER_HANDLE
    <MarshalAs(UnmanagedType.LPStr)> pValueName As String,   ' LPCSTR
    pType As IntPtr,   ' DWORD* optional, out
    pData As IntPtr,   ' BYTE* optional, out
    nSize As UInteger,   ' DWORD
    <Out> ByRef pcbNeeded As UInteger   ' DWORD* out
) As UInteger
End Function

' hPrinter : PRINTER_HANDLE
' pValueName : LPCSTR
' pType : DWORD* optional, out
' pData : BYTE* optional, out
' nSize : DWORD
' pcbNeeded : DWORD* out
Declare PtrSafe Function GetPrinterDataA Lib "winspool.drv" ( _
    ByVal hPrinter As LongPtr, _
    ByVal pValueName As String, _
    ByVal pType As LongPtr, _
    ByVal pData As LongPtr, _
    ByVal nSize As Long, _
    ByRef pcbNeeded As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetPrinterDataA = ctypes.windll.LoadLibrary("winspool.drv").GetPrinterDataA
GetPrinterDataA.restype = wintypes.DWORD
GetPrinterDataA.argtypes = [
    PRINTER_HANDLE,  # hPrinter : PRINTER_HANDLE
    wintypes.LPCSTR,  # pValueName : LPCSTR
    ctypes.POINTER(wintypes.DWORD),  # pType : DWORD* optional, out
    ctypes.POINTER(ctypes.c_ubyte),  # pData : BYTE* optional, out
    wintypes.DWORD,  # nSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcbNeeded : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
GetPrinterDataA = Fiddle::Function.new(
  lib['GetPrinterDataA'],
  [
    Fiddle::TYPE_VOIDP,  # hPrinter : PRINTER_HANDLE
    Fiddle::TYPE_VOIDP,  # pValueName : LPCSTR
    Fiddle::TYPE_VOIDP,  # pType : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # pData : BYTE* optional, out
    -Fiddle::TYPE_INT,  # nSize : DWORD
    Fiddle::TYPE_VOIDP,  # pcbNeeded : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winspool.drv")]
extern "system" {
    fn GetPrinterDataA(
        hPrinter: PRINTER_HANDLE,  // PRINTER_HANDLE
        pValueName: *const u8,  // LPCSTR
        pType: *mut u32,  // DWORD* optional, out
        pData: *mut u8,  // BYTE* optional, out
        nSize: u32,  // DWORD
        pcbNeeded: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("winspool.drv", CharSet = CharSet.Ansi)]
public static extern uint GetPrinterDataA(PRINTER_HANDLE hPrinter, [MarshalAs(UnmanagedType.LPStr)] string pValueName, IntPtr pType, IntPtr pData, uint nSize, out uint pcbNeeded);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_GetPrinterDataA' -Namespace Win32 -PassThru
# $api::GetPrinterDataA(hPrinter, pValueName, pType, pData, nSize, pcbNeeded)

#uselib "winspool.drv"
#func global GetPrinterDataA "GetPrinterDataA" sptr, sptr, sptr, sptr, sptr, sptr
; GetPrinterDataA hPrinter, pValueName, varptr(pType), varptr(pData), nSize, varptr(pcbNeeded)   ; 戻り値は stat
; hPrinter : PRINTER_HANDLE -> "sptr"
; pValueName : LPCSTR -> "sptr"
; pType : DWORD* optional, out -> "sptr"
; pData : BYTE* optional, out -> "sptr"
; nSize : DWORD -> "sptr"
; pcbNeeded : DWORD* out -> "sptr"
; ※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 GetPrinterDataA "GetPrinterDataA" int, str, var, var, int, var
; res = GetPrinterDataA(hPrinter, pValueName, pType, pData, nSize, pcbNeeded)
; hPrinter : PRINTER_HANDLE -> "int"
; pValueName : LPCSTR -> "str"
; pType : DWORD* optional, out -> "var"
; pData : BYTE* optional, out -> "var"
; nSize : DWORD -> "int"
; pcbNeeded : DWORD* out -> "var"
; ※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。

; DWORD GetPrinterDataA(PRINTER_HANDLE hPrinter, LPCSTR pValueName, DWORD* pType, BYTE* pData, DWORD nSize, DWORD* pcbNeeded)
#uselib "winspool.drv"
#cfunc global GetPrinterDataA "GetPrinterDataA" int, str, var, var, int, var
; res = GetPrinterDataA(hPrinter, pValueName, pType, pData, nSize, pcbNeeded)
; hPrinter : PRINTER_HANDLE -> "int"
; pValueName : LPCSTR -> "str"
; pType : DWORD* optional, out -> "var"
; pData : BYTE* optional, out -> "var"
; nSize : DWORD -> "int"
; pcbNeeded : DWORD* out -> "var"
; ※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")
	procGetPrinterDataA = winspool_drv.NewProc("GetPrinterDataA")
)

// hPrinter (PRINTER_HANDLE), pValueName (LPCSTR), pType (DWORD* optional, out), pData (BYTE* optional, out), nSize (DWORD), pcbNeeded (DWORD* out)
r1, _, err := procGetPrinterDataA.Call(
	uintptr(hPrinter),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pValueName))),
	uintptr(pType),
	uintptr(pData),
	uintptr(nSize),
	uintptr(pcbNeeded),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetPrinterDataA(
  hPrinter: PRINTER_HANDLE;   // PRINTER_HANDLE
  pValueName: PAnsiChar;   // LPCSTR
  pType: Pointer;   // DWORD* optional, out
  pData: Pointer;   // BYTE* optional, out
  nSize: DWORD;   // DWORD
  pcbNeeded: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'winspool.drv' name 'GetPrinterDataA';

result := DllCall("winspool.drv\GetPrinterDataA"
    , "Ptr", hPrinter   ; PRINTER_HANDLE
    , "AStr", pValueName   ; LPCSTR
    , "Ptr", pType   ; DWORD* optional, out
    , "Ptr", pData   ; BYTE* optional, out
    , "UInt", nSize   ; DWORD
    , "Ptr", pcbNeeded   ; DWORD* out
    , "UInt")   ; return: DWORD

●GetPrinterDataA(hPrinter, pValueName, pType, pData, nSize, pcbNeeded) = DLL("winspool.drv", "dword GetPrinterDataA(void*, char*, void*, void*, dword, void*)")
# 呼び出し: GetPrinterDataA(hPrinter, pValueName, pType, pData, nSize, pcbNeeded)
# hPrinter : PRINTER_HANDLE -> "void*"
# pValueName : LPCSTR -> "char*"
# pType : DWORD* optional, out -> "void*"
# pData : BYTE* optional, out -> "void*"
# nSize : DWORD -> "dword"
# pcbNeeded : DWORD* out -> "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)。