VarI1FromStr

関数

ロケールを指定して文字列を符号付き1バイト整数に変換する。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

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

HRESULT VarI1FromStr(
    LPCWSTR strIn,
    DWORD lcid,
    DWORD dwFlags,
    LPSTR pcOut
);

パラメーター

名前	型	方向
strIn	LPCWSTR	in
lcid	DWORD	in
dwFlags	DWORD	in
pcOut	LPSTR	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT VarI1FromStr(
    LPCWSTR strIn,
    DWORD lcid,
    DWORD dwFlags,
    LPSTR pcOut
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int VarI1FromStr(
    [MarshalAs(UnmanagedType.LPWStr)] string strIn,   // LPCWSTR
    uint lcid,   // DWORD
    uint dwFlags,   // DWORD
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pcOut   // LPSTR out
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarI1FromStr(
    <MarshalAs(UnmanagedType.LPWStr)> strIn As String,   ' LPCWSTR
    lcid As UInteger,   ' DWORD
    dwFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> pcOut As System.Text.StringBuilder   ' LPSTR out
) As Integer
End Function

' strIn : LPCWSTR
' lcid : DWORD
' dwFlags : DWORD
' pcOut : LPSTR out
Declare PtrSafe Function VarI1FromStr Lib "oleaut32" ( _
    ByVal strIn As LongPtr, _
    ByVal lcid As Long, _
    ByVal dwFlags As Long, _
    ByVal pcOut As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VarI1FromStr = ctypes.windll.oleaut32.VarI1FromStr
VarI1FromStr.restype = ctypes.c_int
VarI1FromStr.argtypes = [
    wintypes.LPCWSTR,  # strIn : LPCWSTR
    wintypes.DWORD,  # lcid : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
    wintypes.LPSTR,  # pcOut : LPSTR out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarI1FromStr = Fiddle::Function.new(
  lib['VarI1FromStr'],
  [
    Fiddle::TYPE_VOIDP,  # strIn : LPCWSTR
    -Fiddle::TYPE_INT,  # lcid : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pcOut : LPSTR out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarI1FromStr(
        strIn: *const u16,  // LPCWSTR
        lcid: u32,  // DWORD
        dwFlags: u32,  // DWORD
        pcOut: *mut u8  // LPSTR out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarI1FromStr([MarshalAs(UnmanagedType.LPWStr)] string strIn, uint lcid, uint dwFlags, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pcOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarI1FromStr' -Namespace Win32 -PassThru
# $api::VarI1FromStr(strIn, lcid, dwFlags, pcOut)

#uselib "OLEAUT32.dll"
#func global VarI1FromStr "VarI1FromStr" sptr, sptr, sptr, sptr
; VarI1FromStr strIn, lcid, dwFlags, varptr(pcOut)   ; 戻り値は stat
; strIn : LPCWSTR -> "sptr"
; lcid : DWORD -> "sptr"
; dwFlags : DWORD -> "sptr"
; pcOut : LPSTR 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 "OLEAUT32.dll"
#cfunc global VarI1FromStr "VarI1FromStr" wstr, int, int, var
; res = VarI1FromStr(strIn, lcid, dwFlags, pcOut)
; strIn : LPCWSTR -> "wstr"
; lcid : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pcOut : LPSTR 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 "OLEAUT32.dll"
#cfunc global VarI1FromStr "VarI1FromStr" wstr, int, int, sptr
; res = VarI1FromStr(strIn, lcid, dwFlags, varptr(pcOut))
; strIn : LPCWSTR -> "wstr"
; lcid : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pcOut : LPSTR 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:

; HRESULT VarI1FromStr(LPCWSTR strIn, DWORD lcid, DWORD dwFlags, LPSTR pcOut)
#uselib "OLEAUT32.dll"
#cfunc global VarI1FromStr "VarI1FromStr" wstr, int, int, var
; res = VarI1FromStr(strIn, lcid, dwFlags, pcOut)
; strIn : LPCWSTR -> "wstr"
; lcid : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pcOut : LPSTR 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。; HRESULT VarI1FromStr(LPCWSTR strIn, DWORD lcid, DWORD dwFlags, LPSTR pcOut)
#uselib "OLEAUT32.dll"
#cfunc global VarI1FromStr "VarI1FromStr" wstr, int, int, intptr
; res = VarI1FromStr(strIn, lcid, dwFlags, varptr(pcOut))
; strIn : LPCWSTR -> "wstr"
; lcid : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pcOut : LPSTR 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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVarI1FromStr = oleaut32.NewProc("VarI1FromStr")
)

// strIn (LPCWSTR), lcid (DWORD), dwFlags (DWORD), pcOut (LPSTR out)
r1, _, err := procVarI1FromStr.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(strIn))),
	uintptr(lcid),
	uintptr(dwFlags),
	uintptr(pcOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarI1FromStr(
  strIn: PWideChar;   // LPCWSTR
  lcid: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  pcOut: PAnsiChar   // LPSTR out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarI1FromStr';

result := DllCall("OLEAUT32\VarI1FromStr"
    , "WStr", strIn   ; LPCWSTR
    , "UInt", lcid   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pcOut   ; LPSTR out
    , "Int")   ; return: HRESULT

●VarI1FromStr(strIn, lcid, dwFlags, pcOut) = DLL("OLEAUT32.dll", "int VarI1FromStr(char*, dword, dword, char*)")
# 呼び出し: VarI1FromStr(strIn, lcid, dwFlags, pcOut)
# strIn : LPCWSTR -> "char*"
# lcid : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# pcOut : LPSTR out -> "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)。