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GetLogicalDrives

関数

利用可能な論理ドライブをビットマスクで取得する。

DLLKERNEL32.dll呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

// KERNEL32.dll
#include <windows.h>

DWORD GetLogicalDrives(void);

パラメーターなし。戻り値: DWORD

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

DWORD GetLogicalDrives(void);

[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern uint GetLogicalDrives();

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetLogicalDrives() As UInteger
End Function

Declare PtrSafe Function GetLogicalDrives Lib "kernel32" () As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetLogicalDrives = ctypes.windll.kernel32.GetLogicalDrives
GetLogicalDrives.restype = wintypes.DWORD
GetLogicalDrives.argtypes = []
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetLogicalDrives = Fiddle::Function.new(
  lib['GetLogicalDrives'],
  [],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetLogicalDrives() -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern uint GetLogicalDrives();
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetLogicalDrives' -Namespace Win32 -PassThru
# $api::GetLogicalDrives()

#uselib "KERNEL32.dll"
#func global GetLogicalDrives "GetLogicalDrives"
; GetLogicalDrives   ; 戻り値は stat
; ※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 "KERNEL32.dll"
#cfunc global GetLogicalDrives "GetLogicalDrives"
; res = GetLogicalDrives()

; DWORD GetLogicalDrives()
#uselib "KERNEL32.dll"
#cfunc global GetLogicalDrives "GetLogicalDrives"
; res = GetLogicalDrives()

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetLogicalDrives = kernel32.NewProc("GetLogicalDrives")
)

r1, _, err := procGetLogicalDrives.Call()
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetLogicalDrives: DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetLogicalDrives';

result := DllCall("KERNEL32\GetLogicalDrives", "UInt")

●GetLogicalDrives() = DLL("KERNEL32.dll", "dword GetLogicalDrives()")
# 呼び出し: GetLogicalDrives()
# 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)。