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WindowsGetStringLen
関数HSTRINGの文字数(長さ)を取得する。
シグネチャ
// api-ms-win-core-winrt-string-l1-1-0.dll
#include <windows.h>
DWORD WindowsGetStringLen(
HSTRING string // optional
);パラメーター
| 名前 | 型 | 方向 | 説明 |
|---|---|---|---|
| string | HSTRING | inoptional | 文字数を取得する対象のHSTRING。NULLは長さ0。 |
戻り値の型: DWORD
各言語での呼び出し定義
// api-ms-win-core-winrt-string-l1-1-0.dll
#include <windows.h>
DWORD WindowsGetStringLen(
HSTRING string // optional
);[DllImport("api-ms-win-core-winrt-string-l1-1-0.dll", ExactSpelling = true)]
static extern uint WindowsGetStringLen(
IntPtr string // HSTRING optional
);<DllImport("api-ms-win-core-winrt-string-l1-1-0.dll", ExactSpelling:=True)>
Public Shared Function WindowsGetStringLen(
[string] As IntPtr ' HSTRING optional
) As UInteger
End Function' string : HSTRING optional
Declare PtrSafe Function WindowsGetStringLen Lib "api-ms-win-core-winrt-string-l1-1-0" ( _
ByVal string 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
WindowsGetStringLen = ctypes.windll.LoadLibrary("api-ms-win-core-winrt-string-l1-1-0.dll").WindowsGetStringLen
WindowsGetStringLen.restype = wintypes.DWORD
WindowsGetStringLen.argtypes = [
wintypes.HANDLE, # string : HSTRING optional
]require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('api-ms-win-core-winrt-string-l1-1-0.dll')
WindowsGetStringLen = Fiddle::Function.new(
lib['WindowsGetStringLen'],
[
Fiddle::TYPE_VOIDP, # string : HSTRING optional
],
-Fiddle::TYPE_INT)#[link(name = "api-ms-win-core-winrt-string-l1-1-0")]
extern "system" {
fn WindowsGetStringLen(
string: *mut core::ffi::c_void // HSTRING optional
) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[DllImport("api-ms-win-core-winrt-string-l1-1-0.dll")]
public static extern uint WindowsGetStringLen(IntPtr string);
"@
$api = Add-Type -MemberDefinition $sig -Name 'api-ms-win-core-winrt-string-l1-1-0_WindowsGetStringLen' -Namespace Win32 -PassThru
# $api::WindowsGetStringLen(string)#uselib "api-ms-win-core-winrt-string-l1-1-0.dll"
#func global WindowsGetStringLen "WindowsGetStringLen" sptr
; WindowsGetStringLen string ; 戻り値は stat
; string : HSTRING optional -> "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 "api-ms-win-core-winrt-string-l1-1-0.dll"
#cfunc global WindowsGetStringLen "WindowsGetStringLen" sptr
; res = WindowsGetStringLen(string)
; string : HSTRING optional -> "sptr"; DWORD WindowsGetStringLen(HSTRING string)
#uselib "api-ms-win-core-winrt-string-l1-1-0.dll"
#cfunc global WindowsGetStringLen "WindowsGetStringLen" intptr
; res = WindowsGetStringLen(string)
; string : HSTRING optional -> "intptr"import (
"golang.org/x/sys/windows"
"unsafe"
)
var (
api_ms_win_core_winrt_string_l1_1_0 = windows.NewLazySystemDLL("api-ms-win-core-winrt-string-l1-1-0.dll")
procWindowsGetStringLen = api_ms_win_core_winrt_string_l1_1_0.NewProc("WindowsGetStringLen")
)
// string (HSTRING optional)
r1, _, err := procWindowsGetStringLen.Call(
uintptr(string),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // DWORDfunction WindowsGetStringLen(
string: THandle // HSTRING optional
): DWORD; stdcall;
external 'api-ms-win-core-winrt-string-l1-1-0.dll' name 'WindowsGetStringLen';result := DllCall("api-ms-win-core-winrt-string-l1-1-0\WindowsGetStringLen"
, "Ptr", string ; HSTRING optional
, "UInt") ; return: DWORD●WindowsGetStringLen(string) = DLL("api-ms-win-core-winrt-string-l1-1-0.dll", "dword WindowsGetStringLen(void*)")
# 呼び出し: WindowsGetStringLen(string)
# string : HSTRING optional -> "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)。const std = @import("std");
extern "api-ms-win-core-winrt-string-l1-1-0" fn WindowsGetStringLen(
string: ?*anyopaque // HSTRING optional
) callconv(std.os.windows.WINAPI) u32;proc WindowsGetStringLen(
string: pointer # HSTRING optional
): uint32 {.importc: "WindowsGetStringLen", stdcall, dynlib: "api-ms-win-core-winrt-string-l1-1-0.dll".}pragma(lib, "api-ms-win-core-winrt-string-l1-1-0");
extern(Windows)
uint WindowsGetStringLen(
void* string // HSTRING optional
);ccall((:WindowsGetStringLen, "api-ms-win-core-winrt-string-l1-1-0.dll"), stdcall, UInt32,
(Ptr{Cvoid},),
string)
# string : HSTRING optional -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。local ffi = require("ffi")
ffi.cdef[[
uint32_t WindowsGetStringLen(
void* string);
]]
local api-ms-win-core-winrt-string-l1-1-0 = ffi.load("api-ms-win-core-winrt-string-l1-1-0")
-- api-ms-win-core-winrt-string-l1-1-0.WindowsGetStringLen(string)
-- string : HSTRING optional
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。const koffi = require('koffi');
const lib = koffi.load('api-ms-win-core-winrt-string-l1-1-0.dll');
const WindowsGetStringLen = lib.func('__stdcall', 'WindowsGetStringLen', 'uint32_t', ['void *']);
// WindowsGetStringLen(string)
// string : HSTRING optional -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。const lib = Deno.dlopen("api-ms-win-core-winrt-string-l1-1-0.dll", {
WindowsGetStringLen: { parameters: ["pointer"], result: "u32" },
});
// lib.symbols.WindowsGetStringLen(string)
// string : HSTRING optional -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。<?php
$ffi = FFI::cdef(<<<C
uint32_t WindowsGetStringLen(
void* string);
C, "api-ms-win-core-winrt-string-l1-1-0.dll");
// $ffi->WindowsGetStringLen(string);
// string : HSTRING optional
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;
public interface Api-ms-win-core-winrt-string-l1-1-0 extends StdCallLibrary {
Api-ms-win-core-winrt-string-l1-1-0 INSTANCE = Native.load("api-ms-win-core-winrt-string-l1-1-0", Api-ms-win-core-winrt-string-l1-1-0.class);
int WindowsGetStringLen(
Pointer string // HSTRING optional
);
}@[Link("api-ms-win-core-winrt-string-l1-1-0")]
lib Libapi-ms-win-core-winrt-string-l1-1-0
fun WindowsGetStringLen = WindowsGetStringLen(
string : Void* # HSTRING optional
) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。import 'dart:ffi';
import 'package:ffi/ffi.dart';
typedef WindowsGetStringLenNative = Uint32 Function(Pointer<Void>);
typedef WindowsGetStringLenDart = int Function(Pointer<Void>);
final WindowsGetStringLen = DynamicLibrary.open('api-ms-win-core-winrt-string-l1-1-0.dll')
.lookupFunction<WindowsGetStringLenNative, WindowsGetStringLenDart>('WindowsGetStringLen');
// string : HSTRING optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。{$mode objfpc}{$H+}
function WindowsGetStringLen(
string: THandle // HSTRING optional
): DWORD; stdcall;
external 'api-ms-win-core-winrt-string-l1-1-0.dll' name 'WindowsGetStringLen';import Foreign
import Foreign.C.Types
import Foreign.C.String
foreign import stdcall safe "WindowsGetStringLen"
c_WindowsGetStringLen :: Ptr () -> IO Word32
-- string : HSTRING optional -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。open Ctypes
open Foreign
let windowsgetstringlen =
foreign "WindowsGetStringLen"
((ptr void) @-> returning uint32_t)
(* string : HSTRING optional -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)(cffi:define-foreign-library api-ms-win-core-winrt-string-l1-1-0 (t "api-ms-win-core-winrt-string-l1-1-0.dll"))
(cffi:use-foreign-library api-ms-win-core-winrt-string-l1-1-0)
(cffi:defcfun ("WindowsGetStringLen" windows-get-string-len :convention :stdcall) :uint32
(string :pointer)) ; HSTRING optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。use Win32::API;
my $WindowsGetStringLen = Win32::API::More->new('api-ms-win-core-winrt-string-l1-1-0',
'DWORD WindowsGetStringLen(HANDLE string)');
# my $ret = $WindowsGetStringLen->Call($string);
# string : HSTRING optional -> HANDLE
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。