DnsFree

関数

DNS APIが割り当てたメモリを解放する。

DLLDNSAPI.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

void DnsFree(
    void* pData,   // optional
    DNS_FREE_TYPE FreeType
);

パラメーター

名前	型	方向
pData	void*	inoptional
FreeType	DNS_FREE_TYPE	in

戻り値の型: void

各言語での呼び出し定義

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

void DnsFree(
    void* pData,   // optional
    DNS_FREE_TYPE FreeType
);

[DllImport("DNSAPI.dll", ExactSpelling = true)]
static extern void DnsFree(
    IntPtr pData,   // void* optional
    int FreeType   // DNS_FREE_TYPE
);

<DllImport("DNSAPI.dll", ExactSpelling:=True)>
Public Shared Sub DnsFree(
    pData As IntPtr,   ' void* optional
    FreeType As Integer   ' DNS_FREE_TYPE
)
End Sub

' pData : void* optional
' FreeType : DNS_FREE_TYPE
Declare PtrSafe Sub DnsFree Lib "dnsapi" ( _
    ByVal pData As LongPtr, _
    ByVal FreeType As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DnsFree = ctypes.windll.dnsapi.DnsFree
DnsFree.restype = None
DnsFree.argtypes = [
    ctypes.POINTER(None),  # pData : void* optional
    ctypes.c_int,  # FreeType : DNS_FREE_TYPE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DNSAPI.dll')
DnsFree = Fiddle::Function.new(
  lib['DnsFree'],
  [
    Fiddle::TYPE_VOIDP,  # pData : void* optional
    Fiddle::TYPE_INT,  # FreeType : DNS_FREE_TYPE
  ],
  Fiddle::TYPE_VOID)

#[link(name = "dnsapi")]
extern "system" {
    fn DnsFree(
        pData: *mut (),  // void* optional
        FreeType: i32  // DNS_FREE_TYPE
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DNSAPI.dll")]
public static extern void DnsFree(IntPtr pData, int FreeType);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DNSAPI_DnsFree' -Namespace Win32 -PassThru
# $api::DnsFree(pData, FreeType)

#uselib "DNSAPI.dll"
#func global DnsFree "DnsFree" sptr, sptr
; DnsFree pData, FreeType
; pData : void* optional -> "sptr"
; FreeType : DNS_FREE_TYPE -> "sptr"

#uselib "DNSAPI.dll"
#func global DnsFree "DnsFree" sptr, int
; DnsFree pData, FreeType
; pData : void* optional -> "sptr"
; FreeType : DNS_FREE_TYPE -> "int"

; void DnsFree(void* pData, DNS_FREE_TYPE FreeType)
#uselib "DNSAPI.dll"
#func global DnsFree "DnsFree" intptr, int
; DnsFree pData, FreeType
; pData : void* optional -> "intptr"
; FreeType : DNS_FREE_TYPE -> "int"

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

var (
	dnsapi = windows.NewLazySystemDLL("DNSAPI.dll")
	procDnsFree = dnsapi.NewProc("DnsFree")
)

// pData (void* optional), FreeType (DNS_FREE_TYPE)
r1, _, err := procDnsFree.Call(
	uintptr(pData),
	uintptr(FreeType),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure DnsFree(
  pData: Pointer;   // void* optional
  FreeType: Integer   // DNS_FREE_TYPE
); stdcall;
  external 'DNSAPI.dll' name 'DnsFree';

result := DllCall("DNSAPI\DnsFree"
    , "Ptr", pData   ; void* optional
    , "Int", FreeType   ; DNS_FREE_TYPE
    , "Int")   ; return: void

●DnsFree(pData, FreeType) = DLL("DNSAPI.dll", "int DnsFree(void*, int)")
# 呼び出し: DnsFree(pData, FreeType)
# pData : void* optional -> "void*"
# FreeType : DNS_FREE_TYPE -> "int"
# 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)。