ホーム › Networking.WinInet › GetUrlCacheHeaderData

GetUrlCacheHeaderData

関数

URLキャッシュのヘッダーデータを取得する。

DLLWININET.dll呼出規約winapi

シグネチャ

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

BOOL GetUrlCacheHeaderData(
    DWORD nIdx,
    DWORD* lpdwData
);

パラメーター

名前	型	方向
nIdx	DWORD	in
lpdwData	DWORD*	out

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL GetUrlCacheHeaderData(
    DWORD nIdx,
    DWORD* lpdwData
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WININET.dll", ExactSpelling = true)]
static extern bool GetUrlCacheHeaderData(
    uint nIdx,   // DWORD
    out uint lpdwData   // DWORD* out
);

<DllImport("WININET.dll", ExactSpelling:=True)>
Public Shared Function GetUrlCacheHeaderData(
    nIdx As UInteger,   ' DWORD
    <Out> ByRef lpdwData As UInteger   ' DWORD* out
) As Boolean
End Function

' nIdx : DWORD
' lpdwData : DWORD* out
Declare PtrSafe Function GetUrlCacheHeaderData Lib "wininet" ( _
    ByVal nIdx As Long, _
    ByRef lpdwData 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

GetUrlCacheHeaderData = ctypes.windll.wininet.GetUrlCacheHeaderData
GetUrlCacheHeaderData.restype = wintypes.BOOL
GetUrlCacheHeaderData.argtypes = [
    wintypes.DWORD,  # nIdx : DWORD
    ctypes.POINTER(wintypes.DWORD),  # lpdwData : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
GetUrlCacheHeaderData = Fiddle::Function.new(
  lib['GetUrlCacheHeaderData'],
  [
    -Fiddle::TYPE_INT,  # nIdx : DWORD
    Fiddle::TYPE_VOIDP,  # lpdwData : DWORD* out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WININET.dll")]
public static extern bool GetUrlCacheHeaderData(uint nIdx, out uint lpdwData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_GetUrlCacheHeaderData' -Namespace Win32 -PassThru
# $api::GetUrlCacheHeaderData(nIdx, lpdwData)

#uselib "WININET.dll"
#func global GetUrlCacheHeaderData "GetUrlCacheHeaderData" sptr, sptr
; GetUrlCacheHeaderData nIdx, varptr(lpdwData)   ; 戻り値は stat
; nIdx : DWORD -> "sptr"
; lpdwData : DWORD* 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 "WININET.dll"
#cfunc global GetUrlCacheHeaderData "GetUrlCacheHeaderData" int, var
; res = GetUrlCacheHeaderData(nIdx, lpdwData)
; nIdx : DWORD -> "int"
; lpdwData : DWORD* 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 "WININET.dll"
#cfunc global GetUrlCacheHeaderData "GetUrlCacheHeaderData" int, sptr
; res = GetUrlCacheHeaderData(nIdx, varptr(lpdwData))
; nIdx : DWORD -> "int"
; lpdwData : DWORD* 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 GetUrlCacheHeaderData(DWORD nIdx, DWORD* lpdwData)
#uselib "WININET.dll"
#cfunc global GetUrlCacheHeaderData "GetUrlCacheHeaderData" int, var
; res = GetUrlCacheHeaderData(nIdx, lpdwData)
; nIdx : DWORD -> "int"
; lpdwData : DWORD* 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 GetUrlCacheHeaderData(DWORD nIdx, DWORD* lpdwData)
#uselib "WININET.dll"
#cfunc global GetUrlCacheHeaderData "GetUrlCacheHeaderData" int, intptr
; res = GetUrlCacheHeaderData(nIdx, varptr(lpdwData))
; nIdx : DWORD -> "int"
; lpdwData : DWORD* 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 (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procGetUrlCacheHeaderData = wininet.NewProc("GetUrlCacheHeaderData")
)

// nIdx (DWORD), lpdwData (DWORD* out)
r1, _, err := procGetUrlCacheHeaderData.Call(
	uintptr(nIdx),
	uintptr(lpdwData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetUrlCacheHeaderData(
  nIdx: DWORD;   // DWORD
  lpdwData: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'WININET.dll' name 'GetUrlCacheHeaderData';

result := DllCall("WININET\GetUrlCacheHeaderData"
    , "UInt", nIdx   ; DWORD
    , "Ptr", lpdwData   ; DWORD* out
    , "Int")   ; return: BOOL

●GetUrlCacheHeaderData(nIdx, lpdwData) = DLL("WININET.dll", "bool GetUrlCacheHeaderData(dword, void*)")
# 呼び出し: GetUrlCacheHeaderData(nIdx, lpdwData)
# nIdx : DWORD -> "dword"
# lpdwData : DWORD* 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)。