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WTSFreeMemoryExA

関数
WTS関数が割り当てた型付きメモリを解放する。
DLLWTSAPI32.dll文字セットANSI (-A)呼出規約winapiSetLastErrorあり対応OSWindows 7 以降

シグネチャ

// WTSAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL WTSFreeMemoryExA(
    WTS_TYPE_CLASS WTSTypeClass,
    void* pMemory,
    DWORD NumberOfEntries
);

パラメーター

名前方向説明
WTSTypeClassWTS_TYPE_CLASSin解放するメモリの型を示すWTS_TYPE_CLASS列挙値。
pMemoryvoid*in解放対象のメモリブロックへのポインタ。
NumberOfEntriesDWORDinpMemory内のエントリ(要素)数。

戻り値の型: BOOL

各言語での呼び出し定義

// WTSAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL WTSFreeMemoryExA(
    WTS_TYPE_CLASS WTSTypeClass,
    void* pMemory,
    DWORD NumberOfEntries
);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WTSAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool WTSFreeMemoryExA(
    int WTSTypeClass,   // WTS_TYPE_CLASS
    IntPtr pMemory,   // void*
    uint NumberOfEntries   // DWORD
);
<DllImport("WTSAPI32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WTSFreeMemoryExA(
    WTSTypeClass As Integer,   ' WTS_TYPE_CLASS
    pMemory As IntPtr,   ' void*
    NumberOfEntries As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function
' WTSTypeClass : WTS_TYPE_CLASS
' pMemory : void*
' NumberOfEntries : DWORD
Declare PtrSafe Function WTSFreeMemoryExA Lib "wtsapi32" ( _
    ByVal WTSTypeClass As Long, _
    ByVal pMemory As LongPtr, _
    ByVal NumberOfEntries 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

WTSFreeMemoryExA = ctypes.windll.wtsapi32.WTSFreeMemoryExA
WTSFreeMemoryExA.restype = wintypes.BOOL
WTSFreeMemoryExA.argtypes = [
    ctypes.c_int,  # WTSTypeClass : WTS_TYPE_CLASS
    ctypes.POINTER(None),  # pMemory : void*
    wintypes.DWORD,  # NumberOfEntries : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WTSAPI32.dll')
WTSFreeMemoryExA = Fiddle::Function.new(
  lib['WTSFreeMemoryExA'],
  [
    Fiddle::TYPE_INT,  # WTSTypeClass : WTS_TYPE_CLASS
    Fiddle::TYPE_VOIDP,  # pMemory : void*
    -Fiddle::TYPE_INT,  # NumberOfEntries : DWORD
  ],
  Fiddle::TYPE_INT)
#[link(name = "wtsapi32")]
extern "system" {
    fn WTSFreeMemoryExA(
        WTSTypeClass: i32,  // WTS_TYPE_CLASS
        pMemory: *mut (),  // void*
        NumberOfEntries: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WTSAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool WTSFreeMemoryExA(int WTSTypeClass, IntPtr pMemory, uint NumberOfEntries);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WTSAPI32_WTSFreeMemoryExA' -Namespace Win32 -PassThru
# $api::WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries)
#uselib "WTSAPI32.dll"
#func global WTSFreeMemoryExA "WTSFreeMemoryExA" sptr, sptr, sptr
; WTSFreeMemoryExA WTSTypeClass, pMemory, NumberOfEntries   ; 戻り値は stat
; WTSTypeClass : WTS_TYPE_CLASS -> "sptr"
; pMemory : void* -> "sptr"
; NumberOfEntries : DWORD -> "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 "WTSAPI32.dll"
#cfunc global WTSFreeMemoryExA "WTSFreeMemoryExA" int, sptr, int
; res = WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries)
; WTSTypeClass : WTS_TYPE_CLASS -> "int"
; pMemory : void* -> "sptr"
; NumberOfEntries : DWORD -> "int"
; BOOL WTSFreeMemoryExA(WTS_TYPE_CLASS WTSTypeClass, void* pMemory, DWORD NumberOfEntries)
#uselib "WTSAPI32.dll"
#cfunc global WTSFreeMemoryExA "WTSFreeMemoryExA" int, intptr, int
; res = WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries)
; WTSTypeClass : WTS_TYPE_CLASS -> "int"
; pMemory : void* -> "intptr"
; NumberOfEntries : DWORD -> "int"
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	wtsapi32 = windows.NewLazySystemDLL("WTSAPI32.dll")
	procWTSFreeMemoryExA = wtsapi32.NewProc("WTSFreeMemoryExA")
)

// WTSTypeClass (WTS_TYPE_CLASS), pMemory (void*), NumberOfEntries (DWORD)
r1, _, err := procWTSFreeMemoryExA.Call(
	uintptr(WTSTypeClass),
	uintptr(pMemory),
	uintptr(NumberOfEntries),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL
function WTSFreeMemoryExA(
  WTSTypeClass: Integer;   // WTS_TYPE_CLASS
  pMemory: Pointer;   // void*
  NumberOfEntries: DWORD   // DWORD
): BOOL; stdcall;
  external 'WTSAPI32.dll' name 'WTSFreeMemoryExA';
result := DllCall("WTSAPI32\WTSFreeMemoryExA"
    , "Int", WTSTypeClass   ; WTS_TYPE_CLASS
    , "Ptr", pMemory   ; void*
    , "UInt", NumberOfEntries   ; DWORD
    , "Int")   ; return: BOOL
●WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries) = DLL("WTSAPI32.dll", "bool WTSFreeMemoryExA(int, void*, dword)")
# 呼び出し: WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries)
# WTSTypeClass : WTS_TYPE_CLASS -> "int"
# pMemory : void* -> "void*"
# NumberOfEntries : DWORD -> "dword"
# 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)。
const std = @import("std");

extern "wtsapi32" fn WTSFreeMemoryExA(
    WTSTypeClass: i32, // WTS_TYPE_CLASS
    pMemory: ?*anyopaque, // void*
    NumberOfEntries: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;
proc WTSFreeMemoryExA(
    WTSTypeClass: int32,  # WTS_TYPE_CLASS
    pMemory: pointer,  # void*
    NumberOfEntries: uint32  # DWORD
): int32 {.importc: "WTSFreeMemoryExA", stdcall, dynlib: "WTSAPI32.dll".}
pragma(lib, "wtsapi32");
extern(Windows)
int WTSFreeMemoryExA(
    int WTSTypeClass,   // WTS_TYPE_CLASS
    void* pMemory,   // void*
    uint NumberOfEntries   // DWORD
);
ccall((:WTSFreeMemoryExA, "WTSAPI32.dll"), stdcall, Int32,
      (Int32, Ptr{Cvoid}, UInt32),
      WTSTypeClass, pMemory, NumberOfEntries)
# WTSTypeClass : WTS_TYPE_CLASS -> Int32
# pMemory : void* -> Ptr{Cvoid}
# NumberOfEntries : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t WTSFreeMemoryExA(
    int32_t WTSTypeClass,
    void* pMemory,
    uint32_t NumberOfEntries);
]]
local wtsapi32 = ffi.load("wtsapi32")
-- wtsapi32.WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries)
-- WTSTypeClass : WTS_TYPE_CLASS
-- pMemory : void*
-- NumberOfEntries : DWORD
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
const koffi = require('koffi');
const lib = koffi.load('WTSAPI32.dll');
const WTSFreeMemoryExA = lib.func('__stdcall', 'WTSFreeMemoryExA', 'int32_t', ['int32_t', 'void *', 'uint32_t']);
// WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries)
// WTSTypeClass : WTS_TYPE_CLASS -> 'int32_t'
// pMemory : void* -> 'void *'
// NumberOfEntries : DWORD -> 'uint32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
const lib = Deno.dlopen("WTSAPI32.dll", {
  WTSFreeMemoryExA: { parameters: ["i32", "pointer", "u32"], result: "i32" },
});
// lib.symbols.WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries)
// WTSTypeClass : WTS_TYPE_CLASS -> "i32"
// pMemory : void* -> "pointer"
// NumberOfEntries : DWORD -> "u32"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
int32_t WTSFreeMemoryExA(
    int32_t WTSTypeClass,
    void* pMemory,
    uint32_t NumberOfEntries);
C, "WTSAPI32.dll");
// $ffi->WTSFreeMemoryExA(WTSTypeClass, pMemory, NumberOfEntries);
// WTSTypeClass : WTS_TYPE_CLASS
// pMemory : void*
// NumberOfEntries : DWORD
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。
import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Wtsapi32 extends StdCallLibrary {
    Wtsapi32 INSTANCE = Native.load("wtsapi32", Wtsapi32.class, W32APIOptions.ASCII_OPTIONS);
    boolean WTSFreeMemoryExA(
        int WTSTypeClass,   // WTS_TYPE_CLASS
        Pointer pMemory,   // void*
        int NumberOfEntries   // DWORD
    );
}
@[Link("wtsapi32")]
lib LibWTSAPI32
  fun WTSFreeMemoryExA = WTSFreeMemoryExA(
    WTSTypeClass : Int32,   # WTS_TYPE_CLASS
    pMemory : Void*,   # void*
    NumberOfEntries : UInt32   # DWORD
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。
import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef WTSFreeMemoryExANative = Int32 Function(Int32, Pointer<Void>, Uint32);
typedef WTSFreeMemoryExADart = int Function(int, Pointer<Void>, int);
final WTSFreeMemoryExA = DynamicLibrary.open('WTSAPI32.dll')
    .lookupFunction<WTSFreeMemoryExANative, WTSFreeMemoryExADart>('WTSFreeMemoryExA');
// WTSTypeClass : WTS_TYPE_CLASS -> Int32
// pMemory : void* -> Pointer<Void>
// NumberOfEntries : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function WTSFreeMemoryExA(
  WTSTypeClass: Integer;   // WTS_TYPE_CLASS
  pMemory: Pointer;   // void*
  NumberOfEntries: DWORD   // DWORD
): BOOL; stdcall;
  external 'WTSAPI32.dll' name 'WTSFreeMemoryExA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "WTSFreeMemoryExA"
  c_WTSFreeMemoryExA :: Int32 -> Ptr () -> Word32 -> IO CInt
-- WTSTypeClass : WTS_TYPE_CLASS -> Int32
-- pMemory : void* -> Ptr ()
-- NumberOfEntries : DWORD -> Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。
open Ctypes
open Foreign

let wtsfreememoryexa =
  foreign "WTSFreeMemoryExA"
    (int32_t @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* WTSTypeClass : WTS_TYPE_CLASS -> int32_t *)
(* pMemory : void* -> (ptr void) *)
(* NumberOfEntries : DWORD -> uint32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)
(cffi:define-foreign-library wtsapi32 (t "WTSAPI32.dll"))
(cffi:use-foreign-library wtsapi32)

(cffi:defcfun ("WTSFreeMemoryExA" wtsfree-memory-ex-a :convention :stdcall) :int32
  (wtstype-class :int32)   ; WTS_TYPE_CLASS
  (p-memory :pointer)   ; void*
  (number-of-entries :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $WTSFreeMemoryExA = Win32::API::More->new('WTSAPI32',
    'BOOL WTSFreeMemoryExA(int WTSTypeClass, LPVOID pMemory, DWORD NumberOfEntries)');
# my $ret = $WTSFreeMemoryExA->Call($WTSTypeClass, $pMemory, $NumberOfEntries);
# WTSTypeClass : WTS_TYPE_CLASS -> int
# pMemory : void* -> LPVOID
# NumberOfEntries : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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