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GetWsChangesEx

関数

ワーキングセットのページフォルト情報を拡張形式で取得する。

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

シグネチャ

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

BOOL GetWsChangesEx(
    HANDLE hProcess,
    PSAPI_WS_WATCH_INFORMATION_EX* lpWatchInfoEx,
    DWORD* cb
);

パラメーター

名前	型	方向
hProcess	HANDLE	in
lpWatchInfoEx	PSAPI_WS_WATCH_INFORMATION_EX*	out
cb	DWORD*	inout

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL GetWsChangesEx(
    HANDLE hProcess,
    PSAPI_WS_WATCH_INFORMATION_EX* lpWatchInfoEx,
    DWORD* cb
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("PSAPI.dll", SetLastError = true, ExactSpelling = true)]
static extern bool GetWsChangesEx(
    IntPtr hProcess,   // HANDLE
    IntPtr lpWatchInfoEx,   // PSAPI_WS_WATCH_INFORMATION_EX* out
    ref uint cb   // DWORD* in/out
);

<DllImport("PSAPI.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetWsChangesEx(
    hProcess As IntPtr,   ' HANDLE
    lpWatchInfoEx As IntPtr,   ' PSAPI_WS_WATCH_INFORMATION_EX* out
    ByRef cb As UInteger   ' DWORD* in/out
) As Boolean
End Function

' hProcess : HANDLE
' lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out
' cb : DWORD* in/out
Declare PtrSafe Function GetWsChangesEx Lib "psapi" ( _
    ByVal hProcess As LongPtr, _
    ByVal lpWatchInfoEx As LongPtr, _
    ByRef cb 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

GetWsChangesEx = ctypes.windll.psapi.GetWsChangesEx
GetWsChangesEx.restype = wintypes.BOOL
GetWsChangesEx.argtypes = [
    wintypes.HANDLE,  # hProcess : HANDLE
    ctypes.c_void_p,  # lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out
    ctypes.POINTER(wintypes.DWORD),  # cb : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PSAPI.dll')
GetWsChangesEx = Fiddle::Function.new(
  lib['GetWsChangesEx'],
  [
    Fiddle::TYPE_VOIDP,  # hProcess : HANDLE
    Fiddle::TYPE_VOIDP,  # lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out
    Fiddle::TYPE_VOIDP,  # cb : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "psapi")]
extern "system" {
    fn GetWsChangesEx(
        hProcess: *mut core::ffi::c_void,  // HANDLE
        lpWatchInfoEx: *mut PSAPI_WS_WATCH_INFORMATION_EX,  // PSAPI_WS_WATCH_INFORMATION_EX* out
        cb: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("PSAPI.dll", SetLastError = true)]
public static extern bool GetWsChangesEx(IntPtr hProcess, IntPtr lpWatchInfoEx, ref uint cb);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PSAPI_GetWsChangesEx' -Namespace Win32 -PassThru
# $api::GetWsChangesEx(hProcess, lpWatchInfoEx, cb)

#uselib "PSAPI.dll"
#func global GetWsChangesEx "GetWsChangesEx" sptr, sptr, sptr
; GetWsChangesEx hProcess, varptr(lpWatchInfoEx), varptr(cb)   ; 戻り値は stat
; hProcess : HANDLE -> "sptr"
; lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out -> "sptr"
; cb : DWORD* 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。

出力引数:

#uselib "PSAPI.dll"
#cfunc global GetWsChangesEx "GetWsChangesEx" sptr, var, var
; res = GetWsChangesEx(hProcess, lpWatchInfoEx, cb)
; hProcess : HANDLE -> "sptr"
; lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out -> "var"
; cb : DWORD* 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。#uselib "PSAPI.dll"
#cfunc global GetWsChangesEx "GetWsChangesEx" sptr, sptr, sptr
; res = GetWsChangesEx(hProcess, varptr(lpWatchInfoEx), varptr(cb))
; hProcess : HANDLE -> "sptr"
; lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out -> "sptr"
; cb : DWORD* in/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 GetWsChangesEx(HANDLE hProcess, PSAPI_WS_WATCH_INFORMATION_EX* lpWatchInfoEx, DWORD* cb)
#uselib "PSAPI.dll"
#cfunc global GetWsChangesEx "GetWsChangesEx" intptr, var, var
; res = GetWsChangesEx(hProcess, lpWatchInfoEx, cb)
; hProcess : HANDLE -> "intptr"
; lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out -> "var"
; cb : DWORD* 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 GetWsChangesEx(HANDLE hProcess, PSAPI_WS_WATCH_INFORMATION_EX* lpWatchInfoEx, DWORD* cb)
#uselib "PSAPI.dll"
#cfunc global GetWsChangesEx "GetWsChangesEx" intptr, intptr, intptr
; res = GetWsChangesEx(hProcess, varptr(lpWatchInfoEx), varptr(cb))
; hProcess : HANDLE -> "intptr"
; lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out -> "intptr"
; cb : DWORD* in/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 (
	psapi = windows.NewLazySystemDLL("PSAPI.dll")
	procGetWsChangesEx = psapi.NewProc("GetWsChangesEx")
)

// hProcess (HANDLE), lpWatchInfoEx (PSAPI_WS_WATCH_INFORMATION_EX* out), cb (DWORD* in/out)
r1, _, err := procGetWsChangesEx.Call(
	uintptr(hProcess),
	uintptr(lpWatchInfoEx),
	uintptr(cb),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetWsChangesEx(
  hProcess: THandle;   // HANDLE
  lpWatchInfoEx: Pointer;   // PSAPI_WS_WATCH_INFORMATION_EX* out
  cb: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'PSAPI.dll' name 'GetWsChangesEx';

result := DllCall("PSAPI\GetWsChangesEx"
    , "Ptr", hProcess   ; HANDLE
    , "Ptr", lpWatchInfoEx   ; PSAPI_WS_WATCH_INFORMATION_EX* out
    , "Ptr", cb   ; DWORD* in/out
    , "Int")   ; return: BOOL

●GetWsChangesEx(hProcess, lpWatchInfoEx, cb) = DLL("PSAPI.dll", "bool GetWsChangesEx(void*, void*, void*)")
# 呼び出し: GetWsChangesEx(hProcess, lpWatchInfoEx, cb)
# hProcess : HANDLE -> "void*"
# lpWatchInfoEx : PSAPI_WS_WATCH_INFORMATION_EX* out -> "void*"
# cb : DWORD* 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)。