SysFreeString

関数

割り当てられたBSTR文字列を解放する。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

// OLEAUT32.dll
#include <windows.h>

void SysFreeString(
    LPWSTR bstrString   // optional
);

パラメーター

名前	型	方向
bstrString	LPWSTR	inoptional

戻り値の型: void

各言語での呼び出し定義

// OLEAUT32.dll
#include <windows.h>

void SysFreeString(
    LPWSTR bstrString   // optional
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern void SysFreeString(
    [MarshalAs(UnmanagedType.LPWStr)] string bstrString   // LPWSTR optional
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Sub SysFreeString(
    <MarshalAs(UnmanagedType.LPWStr)> bstrString As String   ' LPWSTR optional
)
End Sub

' bstrString : LPWSTR optional
Declare PtrSafe Sub SysFreeString Lib "oleaut32" ( _
    ByVal bstrString As LongPtr)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SysFreeString = ctypes.windll.oleaut32.SysFreeString
SysFreeString.restype = None
SysFreeString.argtypes = [
    wintypes.LPCWSTR,  # bstrString : LPWSTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
SysFreeString = Fiddle::Function.new(
  lib['SysFreeString'],
  [
    Fiddle::TYPE_VOIDP,  # bstrString : LPWSTR optional
  ],
  Fiddle::TYPE_VOID)

#[link(name = "oleaut32")]
extern "system" {
    fn SysFreeString(
        bstrString: *mut u16  // LPWSTR optional
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern void SysFreeString([MarshalAs(UnmanagedType.LPWStr)] string bstrString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_SysFreeString' -Namespace Win32 -PassThru
# $api::SysFreeString(bstrString)

#uselib "OLEAUT32.dll"
#func global SysFreeString "SysFreeString" sptr
; SysFreeString bstrString
; bstrString : LPWSTR optional -> "sptr"

#uselib "OLEAUT32.dll"
#func global SysFreeString "SysFreeString" wstr
; SysFreeString bstrString
; bstrString : LPWSTR optional -> "wstr"

; void SysFreeString(LPWSTR bstrString)
#uselib "OLEAUT32.dll"
#func global SysFreeString "SysFreeString" wstr
; SysFreeString bstrString
; bstrString : LPWSTR optional -> "wstr"

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

var (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procSysFreeString = oleaut32.NewProc("SysFreeString")
)

// bstrString (LPWSTR optional)
r1, _, err := procSysFreeString.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(bstrString))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure SysFreeString(
  bstrString: PWideChar   // LPWSTR optional
); stdcall;
  external 'OLEAUT32.dll' name 'SysFreeString';

result := DllCall("OLEAUT32\SysFreeString"
    , "WStr", bstrString   ; LPWSTR optional
    , "Int")   ; return: void

●SysFreeString(bstrString) = DLL("OLEAUT32.dll", "int SysFreeString(char*)")
# 呼び出し: SysFreeString(bstrString)
# bstrString : LPWSTR optional -> "char*"
# 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)。