RouterGetPrintClassObject

// SPOOLSS.dll
#include <windows.h>

HRESULT RouterGetPrintClassObject(
    LPCWSTR pPrinter,
    const GUID* riid,
    void** ppv
);

<DllImport("SPOOLSS.dll", ExactSpelling:=True)>
Public Shared Function RouterGetPrintClassObject(
    <MarshalAs(UnmanagedType.LPWStr)> pPrinter As String,   ' LPCWSTR
    ByRef riid As Guid,   ' GUID*
    ppv As IntPtr   ' void** out
) As Integer
End Function

' pPrinter : LPCWSTR
' riid : GUID*
' ppv : void** out
Declare PtrSafe Function RouterGetPrintClassObject Lib "spoolss" ( _
    ByVal pPrinter As LongPtr, _
    ByVal riid As LongPtr, _
    ByVal ppv 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

RouterGetPrintClassObject = ctypes.windll.spoolss.RouterGetPrintClassObject
RouterGetPrintClassObject.restype = ctypes.c_int
RouterGetPrintClassObject.argtypes = [
    wintypes.LPCWSTR,  # pPrinter : LPCWSTR
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppv : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SPOOLSS.dll')
RouterGetPrintClassObject = Fiddle::Function.new(
  lib['RouterGetPrintClassObject'],
  [
    Fiddle::TYPE_VOIDP,  # pPrinter : LPCWSTR
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppv : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "spoolss")]
extern "system" {
    fn RouterGetPrintClassObject(
        pPrinter: *const u16,  // LPCWSTR
        riid: *const GUID,  // GUID*
        ppv: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SPOOLSS.dll")]
public static extern int RouterGetPrintClassObject([MarshalAs(UnmanagedType.LPWStr)] string pPrinter, ref Guid riid, IntPtr ppv);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SPOOLSS_RouterGetPrintClassObject' -Namespace Win32 -PassThru
# $api::RouterGetPrintClassObject(pPrinter, riid, ppv)

#uselib "SPOOLSS.dll"
#func global RouterGetPrintClassObject "RouterGetPrintClassObject" sptr, sptr, sptr
; RouterGetPrintClassObject pPrinter, varptr(riid), ppv   ; 戻り値は stat
; pPrinter : LPCWSTR -> "sptr"
; riid : GUID* -> "sptr"
; ppv : void** out -> "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 "SPOOLSS.dll"
#cfunc global RouterGetPrintClassObject "RouterGetPrintClassObject" wstr, var, sptr
; res = RouterGetPrintClassObject(pPrinter, riid, ppv)
; pPrinter : LPCWSTR -> "wstr"
; riid : GUID* -> "var"
; ppv : void** out -> "sptr"
; ※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。

; HRESULT RouterGetPrintClassObject(LPCWSTR pPrinter, GUID* riid, void** ppv)
#uselib "SPOOLSS.dll"
#cfunc global RouterGetPrintClassObject "RouterGetPrintClassObject" wstr, var, intptr
; res = RouterGetPrintClassObject(pPrinter, riid, ppv)
; pPrinter : LPCWSTR -> "wstr"
; riid : GUID* -> "var"
; ppv : void** out -> "intptr"
; ※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 (
	spoolss = windows.NewLazySystemDLL("SPOOLSS.dll")
	procRouterGetPrintClassObject = spoolss.NewProc("RouterGetPrintClassObject")
)

// pPrinter (LPCWSTR), riid (GUID*), ppv (void** out)
r1, _, err := procRouterGetPrintClassObject.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pPrinter))),
	uintptr(riid),
	uintptr(ppv),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function RouterGetPrintClassObject(
  pPrinter: PWideChar;   // LPCWSTR
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'SPOOLSS.dll' name 'RouterGetPrintClassObject';

result := DllCall("SPOOLSS\RouterGetPrintClassObject"
    , "WStr", pPrinter   ; LPCWSTR
    , "Ptr", riid   ; GUID*
    , "Ptr", ppv   ; void** out
    , "Int")   ; return: HRESULT

●RouterGetPrintClassObject(pPrinter, riid, ppv) = DLL("SPOOLSS.dll", "int RouterGetPrintClassObject(char*, void*, void*)")
# 呼び出し: RouterGetPrintClassObject(pPrinter, riid, ppv)
# pPrinter : LPCWSTR -> "char*"
# riid : GUID* -> "void*"
# ppv : void** 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)。