LocalFree

関数

ローカルメモリオブジェクトを解放する。

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

シグネチャ

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

HLOCAL LocalFree(
    HLOCAL hMem   // optional
);

パラメーター

名前	型	方向
hMem	HLOCAL	inoptional

戻り値の型: HLOCAL

各言語での呼び出し定義

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

HLOCAL LocalFree(
    HLOCAL hMem   // optional
);

[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern IntPtr LocalFree(
    IntPtr hMem   // HLOCAL optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function LocalFree(
    hMem As IntPtr   ' HLOCAL optional
) As IntPtr
End Function

' hMem : HLOCAL optional
Declare PtrSafe Function LocalFree Lib "kernel32" ( _
    ByVal hMem As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

LocalFree = ctypes.windll.kernel32.LocalFree
LocalFree.restype = ctypes.c_void_p
LocalFree.argtypes = [
    wintypes.HANDLE,  # hMem : HLOCAL optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
LocalFree = Fiddle::Function.new(
  lib['LocalFree'],
  [
    Fiddle::TYPE_VOIDP,  # hMem : HLOCAL optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn LocalFree(
        hMem: *mut core::ffi::c_void  // HLOCAL optional
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern IntPtr LocalFree(IntPtr hMem);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_LocalFree' -Namespace Win32 -PassThru
# $api::LocalFree(hMem)

#uselib "KERNEL32.dll"
#func global LocalFree "LocalFree" sptr
; LocalFree hMem   ; 戻り値は stat
; hMem : HLOCAL optional -> "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 "KERNEL32.dll"
#cfunc global LocalFree "LocalFree" sptr
; res = LocalFree(hMem)
; hMem : HLOCAL optional -> "sptr"

; HLOCAL LocalFree(HLOCAL hMem)
#uselib "KERNEL32.dll"
#cfunc global LocalFree "LocalFree" intptr
; res = LocalFree(hMem)
; hMem : HLOCAL optional -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procLocalFree = kernel32.NewProc("LocalFree")
)

// hMem (HLOCAL optional)
r1, _, err := procLocalFree.Call(
	uintptr(hMem),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HLOCAL

function LocalFree(
  hMem: THandle   // HLOCAL optional
): THandle; stdcall;
  external 'KERNEL32.dll' name 'LocalFree';

result := DllCall("KERNEL32\LocalFree"
    , "Ptr", hMem   ; HLOCAL optional
    , "Ptr")   ; return: HLOCAL

●LocalFree(hMem) = DLL("KERNEL32.dll", "void* LocalFree(void*)")
# 呼び出し: LocalFree(hMem)
# hMem : HLOCAL optional -> "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)。