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GetSystemRegistryQuota

関数

システムレジストリのクォータ上限と使用量を取得する。

DLLKERNEL32.dll呼出規約winapiSetLastErrorあり対応OSWindows Vista 以降

シグネチャ

// KERNEL32.dll
#include <windows.h>

BOOL GetSystemRegistryQuota(
    DWORD* pdwQuotaAllowed,   // optional
    DWORD* pdwQuotaUsed   // optional
);

パラメーター

名前	型	方向
pdwQuotaAllowed	DWORD*	outoptional
pdwQuotaUsed	DWORD*	outoptional

戻り値の型: BOOL

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

BOOL GetSystemRegistryQuota(
    DWORD* pdwQuotaAllowed,   // optional
    DWORD* pdwQuotaUsed   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool GetSystemRegistryQuota(
    IntPtr pdwQuotaAllowed,   // DWORD* optional, out
    IntPtr pdwQuotaUsed   // DWORD* optional, out
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetSystemRegistryQuota(
    pdwQuotaAllowed As IntPtr,   ' DWORD* optional, out
    pdwQuotaUsed As IntPtr   ' DWORD* optional, out
) As Boolean
End Function

' pdwQuotaAllowed : DWORD* optional, out
' pdwQuotaUsed : DWORD* optional, out
Declare PtrSafe Function GetSystemRegistryQuota Lib "kernel32" ( _
    ByVal pdwQuotaAllowed As LongPtr, _
    ByVal pdwQuotaUsed 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

GetSystemRegistryQuota = ctypes.windll.kernel32.GetSystemRegistryQuota
GetSystemRegistryQuota.restype = wintypes.BOOL
GetSystemRegistryQuota.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # pdwQuotaAllowed : DWORD* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pdwQuotaUsed : DWORD* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetSystemRegistryQuota = Fiddle::Function.new(
  lib['GetSystemRegistryQuota'],
  [
    Fiddle::TYPE_VOIDP,  # pdwQuotaAllowed : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # pdwQuotaUsed : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetSystemRegistryQuota(
        pdwQuotaAllowed: *mut u32,  // DWORD* optional, out
        pdwQuotaUsed: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool GetSystemRegistryQuota(IntPtr pdwQuotaAllowed, IntPtr pdwQuotaUsed);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetSystemRegistryQuota' -Namespace Win32 -PassThru
# $api::GetSystemRegistryQuota(pdwQuotaAllowed, pdwQuotaUsed)

#uselib "KERNEL32.dll"
#func global GetSystemRegistryQuota "GetSystemRegistryQuota" sptr, sptr
; GetSystemRegistryQuota varptr(pdwQuotaAllowed), varptr(pdwQuotaUsed)   ; 戻り値は stat
; pdwQuotaAllowed : DWORD* optional, out -> "sptr"
; pdwQuotaUsed : DWORD* optional, 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。

出力引数:

#uselib "KERNEL32.dll"
#cfunc global GetSystemRegistryQuota "GetSystemRegistryQuota" var, var
; res = GetSystemRegistryQuota(pdwQuotaAllowed, pdwQuotaUsed)
; pdwQuotaAllowed : DWORD* optional, out -> "var"
; pdwQuotaUsed : DWORD* optional, 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。#uselib "KERNEL32.dll"
#cfunc global GetSystemRegistryQuota "GetSystemRegistryQuota" sptr, sptr
; res = GetSystemRegistryQuota(varptr(pdwQuotaAllowed), varptr(pdwQuotaUsed))
; pdwQuotaAllowed : DWORD* optional, out -> "sptr"
; pdwQuotaUsed : DWORD* optional, out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL GetSystemRegistryQuota(DWORD* pdwQuotaAllowed, DWORD* pdwQuotaUsed)
#uselib "KERNEL32.dll"
#cfunc global GetSystemRegistryQuota "GetSystemRegistryQuota" var, var
; res = GetSystemRegistryQuota(pdwQuotaAllowed, pdwQuotaUsed)
; pdwQuotaAllowed : DWORD* optional, out -> "var"
; pdwQuotaUsed : DWORD* optional, 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 GetSystemRegistryQuota(DWORD* pdwQuotaAllowed, DWORD* pdwQuotaUsed)
#uselib "KERNEL32.dll"
#cfunc global GetSystemRegistryQuota "GetSystemRegistryQuota" intptr, intptr
; res = GetSystemRegistryQuota(varptr(pdwQuotaAllowed), varptr(pdwQuotaUsed))
; pdwQuotaAllowed : DWORD* optional, out -> "intptr"
; pdwQuotaUsed : DWORD* optional, out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetSystemRegistryQuota = kernel32.NewProc("GetSystemRegistryQuota")
)

// pdwQuotaAllowed (DWORD* optional, out), pdwQuotaUsed (DWORD* optional, out)
r1, _, err := procGetSystemRegistryQuota.Call(
	uintptr(pdwQuotaAllowed),
	uintptr(pdwQuotaUsed),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetSystemRegistryQuota(
  pdwQuotaAllowed: Pointer;   // DWORD* optional, out
  pdwQuotaUsed: Pointer   // DWORD* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetSystemRegistryQuota';

result := DllCall("KERNEL32\GetSystemRegistryQuota"
    , "Ptr", pdwQuotaAllowed   ; DWORD* optional, out
    , "Ptr", pdwQuotaUsed   ; DWORD* optional, out
    , "Int")   ; return: BOOL

●GetSystemRegistryQuota(pdwQuotaAllowed, pdwQuotaUsed) = DLL("KERNEL32.dll", "bool GetSystemRegistryQuota(void*, void*)")
# 呼び出し: GetSystemRegistryQuota(pdwQuotaAllowed, pdwQuotaUsed)
# pdwQuotaAllowed : DWORD* optional, out -> "void*"
# pdwQuotaUsed : DWORD* optional, 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)。