DdeSetQualityOfService

// USER32.dll
#include <windows.h>

BOOL DdeSetQualityOfService(
    HWND hwndClient,
    const SECURITY_QUALITY_OF_SERVICE* pqosNew,
    SECURITY_QUALITY_OF_SERVICE* pqosPrev
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function DdeSetQualityOfService(
    hwndClient As IntPtr,   ' HWND
    pqosNew As IntPtr,   ' SECURITY_QUALITY_OF_SERVICE*
    pqosPrev As IntPtr   ' SECURITY_QUALITY_OF_SERVICE* in/out
) As Boolean
End Function

' hwndClient : HWND
' pqosNew : SECURITY_QUALITY_OF_SERVICE*
' pqosPrev : SECURITY_QUALITY_OF_SERVICE* in/out
Declare PtrSafe Function DdeSetQualityOfService Lib "user32" ( _
    ByVal hwndClient As LongPtr, _
    ByVal pqosNew As LongPtr, _
    ByVal pqosPrev 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

DdeSetQualityOfService = ctypes.windll.user32.DdeSetQualityOfService
DdeSetQualityOfService.restype = wintypes.BOOL
DdeSetQualityOfService.argtypes = [
    wintypes.HANDLE,  # hwndClient : HWND
    ctypes.c_void_p,  # pqosNew : SECURITY_QUALITY_OF_SERVICE*
    ctypes.c_void_p,  # pqosPrev : SECURITY_QUALITY_OF_SERVICE* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DdeSetQualityOfService = Fiddle::Function.new(
  lib['DdeSetQualityOfService'],
  [
    Fiddle::TYPE_VOIDP,  # hwndClient : HWND
    Fiddle::TYPE_VOIDP,  # pqosNew : SECURITY_QUALITY_OF_SERVICE*
    Fiddle::TYPE_VOIDP,  # pqosPrev : SECURITY_QUALITY_OF_SERVICE* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn DdeSetQualityOfService(
        hwndClient: *mut core::ffi::c_void,  // HWND
        pqosNew: *const SECURITY_QUALITY_OF_SERVICE,  // SECURITY_QUALITY_OF_SERVICE*
        pqosPrev: *mut SECURITY_QUALITY_OF_SERVICE  // SECURITY_QUALITY_OF_SERVICE* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool DdeSetQualityOfService(IntPtr hwndClient, IntPtr pqosNew, IntPtr pqosPrev);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DdeSetQualityOfService' -Namespace Win32 -PassThru
# $api::DdeSetQualityOfService(hwndClient, pqosNew, pqosPrev)

#uselib "USER32.dll"
#func global DdeSetQualityOfService "DdeSetQualityOfService" sptr, sptr, sptr
; DdeSetQualityOfService hwndClient, varptr(pqosNew), varptr(pqosPrev)   ; 戻り値は stat
; hwndClient : HWND -> "sptr"
; pqosNew : SECURITY_QUALITY_OF_SERVICE* -> "sptr"
; pqosPrev : SECURITY_QUALITY_OF_SERVICE* in/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 "USER32.dll"
#cfunc global DdeSetQualityOfService "DdeSetQualityOfService" sptr, var, var
; res = DdeSetQualityOfService(hwndClient, pqosNew, pqosPrev)
; hwndClient : HWND -> "sptr"
; pqosNew : SECURITY_QUALITY_OF_SERVICE* -> "var"
; pqosPrev : SECURITY_QUALITY_OF_SERVICE* in/out -> "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。

; BOOL DdeSetQualityOfService(HWND hwndClient, SECURITY_QUALITY_OF_SERVICE* pqosNew, SECURITY_QUALITY_OF_SERVICE* pqosPrev)
#uselib "USER32.dll"
#cfunc global DdeSetQualityOfService "DdeSetQualityOfService" intptr, var, var
; res = DdeSetQualityOfService(hwndClient, pqosNew, pqosPrev)
; hwndClient : HWND -> "intptr"
; pqosNew : SECURITY_QUALITY_OF_SERVICE* -> "var"
; pqosPrev : SECURITY_QUALITY_OF_SERVICE* in/out -> "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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDdeSetQualityOfService = user32.NewProc("DdeSetQualityOfService")
)

// hwndClient (HWND), pqosNew (SECURITY_QUALITY_OF_SERVICE*), pqosPrev (SECURITY_QUALITY_OF_SERVICE* in/out)
r1, _, err := procDdeSetQualityOfService.Call(
	uintptr(hwndClient),
	uintptr(pqosNew),
	uintptr(pqosPrev),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function DdeSetQualityOfService(
  hwndClient: THandle;   // HWND
  pqosNew: Pointer;   // SECURITY_QUALITY_OF_SERVICE*
  pqosPrev: Pointer   // SECURITY_QUALITY_OF_SERVICE* in/out
): BOOL; stdcall;
  external 'USER32.dll' name 'DdeSetQualityOfService';

result := DllCall("USER32\DdeSetQualityOfService"
    , "Ptr", hwndClient   ; HWND
    , "Ptr", pqosNew   ; SECURITY_QUALITY_OF_SERVICE*
    , "Ptr", pqosPrev   ; SECURITY_QUALITY_OF_SERVICE* in/out
    , "Int")   ; return: BOOL

●DdeSetQualityOfService(hwndClient, pqosNew, pqosPrev) = DLL("USER32.dll", "bool DdeSetQualityOfService(void*, void*, void*)")
# 呼び出し: DdeSetQualityOfService(hwndClient, pqosNew, pqosPrev)
# hwndClient : HWND -> "void*"
# pqosNew : SECURITY_QUALITY_OF_SERVICE* -> "void*"
# pqosPrev : SECURITY_QUALITY_OF_SERVICE* in/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)。