IStream_Reset

関数

ストリームの読み書き位置を先頭へ戻す。

DLLSHLWAPI.dll呼出規約winapi対応OSWindows 2000 以降

シグネチャ

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

HRESULT IStream_Reset(
    IStream* pstm
);

パラメーター

名前	型	方向
pstm	IStream*	in

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT IStream_Reset(
    IStream* pstm
);

[DllImport("SHLWAPI.dll", ExactSpelling = true)]
static extern int IStream_Reset(
    IntPtr pstm   // IStream*
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function IStream_Reset(
    pstm As IntPtr   ' IStream*
) As Integer
End Function

' pstm : IStream*
Declare PtrSafe Function IStream_Reset Lib "shlwapi" ( _
    ByVal pstm As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

IStream_Reset = ctypes.windll.shlwapi.IStream_Reset
IStream_Reset.restype = ctypes.c_int
IStream_Reset.argtypes = [
    ctypes.c_void_p,  # pstm : IStream*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
IStream_Reset = Fiddle::Function.new(
  lib['IStream_Reset'],
  [
    Fiddle::TYPE_VOIDP,  # pstm : IStream*
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn IStream_Reset(
        pstm: *mut core::ffi::c_void  // IStream*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int IStream_Reset(IntPtr pstm);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_IStream_Reset' -Namespace Win32 -PassThru
# $api::IStream_Reset(pstm)

#uselib "SHLWAPI.dll"
#func global IStream_Reset "IStream_Reset" sptr
; IStream_Reset pstm   ; 戻り値は stat
; pstm : IStream* -> "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 "SHLWAPI.dll"
#cfunc global IStream_Reset "IStream_Reset" sptr
; res = IStream_Reset(pstm)
; pstm : IStream* -> "sptr"

; HRESULT IStream_Reset(IStream* pstm)
#uselib "SHLWAPI.dll"
#cfunc global IStream_Reset "IStream_Reset" intptr
; res = IStream_Reset(pstm)
; pstm : IStream* -> "intptr"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procIStream_Reset = shlwapi.NewProc("IStream_Reset")
)

// pstm (IStream*)
r1, _, err := procIStream_Reset.Call(
	uintptr(pstm),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function IStream_Reset(
  pstm: Pointer   // IStream*
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'IStream_Reset';

result := DllCall("SHLWAPI\IStream_Reset"
    , "Ptr", pstm   ; IStream*
    , "Int")   ; return: HRESULT

●IStream_Reset(pstm) = DLL("SHLWAPI.dll", "int IStream_Reset(void*)")
# 呼び出し: IStream_Reset(pstm)
# pstm : IStream* -> "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)。