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GetDiskSpaceInformationA

関数

ボリュームの詳細なディスク領域情報を取得する(ANSI版)。

DLLKERNEL32.dll文字セットANSI (-A)呼出規約winapi

シグネチャ

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

HRESULT GetDiskSpaceInformationA(
    LPCSTR rootPath,   // optional
    DISK_SPACE_INFORMATION* diskSpaceInfo
);

パラメーター

名前	型	方向
rootPath	LPCSTR	inoptional
diskSpaceInfo	DISK_SPACE_INFORMATION*	out

戻り値の型: HRESULT

各言語での呼び出し定義

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

HRESULT GetDiskSpaceInformationA(
    LPCSTR rootPath,   // optional
    DISK_SPACE_INFORMATION* diskSpaceInfo
);

[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern int GetDiskSpaceInformationA(
    [MarshalAs(UnmanagedType.LPStr)] string rootPath,   // LPCSTR optional
    IntPtr diskSpaceInfo   // DISK_SPACE_INFORMATION* out
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetDiskSpaceInformationA(
    <MarshalAs(UnmanagedType.LPStr)> rootPath As String,   ' LPCSTR optional
    diskSpaceInfo As IntPtr   ' DISK_SPACE_INFORMATION* out
) As Integer
End Function

' rootPath : LPCSTR optional
' diskSpaceInfo : DISK_SPACE_INFORMATION* out
Declare PtrSafe Function GetDiskSpaceInformationA Lib "kernel32" ( _
    ByVal rootPath As String, _
    ByVal diskSpaceInfo 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

GetDiskSpaceInformationA = ctypes.windll.kernel32.GetDiskSpaceInformationA
GetDiskSpaceInformationA.restype = ctypes.c_int
GetDiskSpaceInformationA.argtypes = [
    wintypes.LPCSTR,  # rootPath : LPCSTR optional
    ctypes.c_void_p,  # diskSpaceInfo : DISK_SPACE_INFORMATION* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetDiskSpaceInformationA = Fiddle::Function.new(
  lib['GetDiskSpaceInformationA'],
  [
    Fiddle::TYPE_VOIDP,  # rootPath : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # diskSpaceInfo : DISK_SPACE_INFORMATION* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetDiskSpaceInformationA(
        rootPath: *const u8,  // LPCSTR optional
        diskSpaceInfo: *mut DISK_SPACE_INFORMATION  // DISK_SPACE_INFORMATION* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi)]
public static extern int GetDiskSpaceInformationA([MarshalAs(UnmanagedType.LPStr)] string rootPath, IntPtr diskSpaceInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetDiskSpaceInformationA' -Namespace Win32 -PassThru
# $api::GetDiskSpaceInformationA(rootPath, diskSpaceInfo)

#uselib "KERNEL32.dll"
#func global GetDiskSpaceInformationA "GetDiskSpaceInformationA" sptr, sptr
; GetDiskSpaceInformationA rootPath, varptr(diskSpaceInfo)   ; 戻り値は stat
; rootPath : LPCSTR optional -> "sptr"
; diskSpaceInfo : DISK_SPACE_INFORMATION* 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 "KERNEL32.dll"
#cfunc global GetDiskSpaceInformationA "GetDiskSpaceInformationA" str, var
; res = GetDiskSpaceInformationA(rootPath, diskSpaceInfo)
; rootPath : LPCSTR optional -> "str"
; diskSpaceInfo : DISK_SPACE_INFORMATION* 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 "KERNEL32.dll"
#cfunc global GetDiskSpaceInformationA "GetDiskSpaceInformationA" str, sptr
; res = GetDiskSpaceInformationA(rootPath, varptr(diskSpaceInfo))
; rootPath : LPCSTR optional -> "str"
; diskSpaceInfo : DISK_SPACE_INFORMATION* 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 GetDiskSpaceInformationA(LPCSTR rootPath, DISK_SPACE_INFORMATION* diskSpaceInfo)
#uselib "KERNEL32.dll"
#cfunc global GetDiskSpaceInformationA "GetDiskSpaceInformationA" str, var
; res = GetDiskSpaceInformationA(rootPath, diskSpaceInfo)
; rootPath : LPCSTR optional -> "str"
; diskSpaceInfo : DISK_SPACE_INFORMATION* 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 GetDiskSpaceInformationA(LPCSTR rootPath, DISK_SPACE_INFORMATION* diskSpaceInfo)
#uselib "KERNEL32.dll"
#cfunc global GetDiskSpaceInformationA "GetDiskSpaceInformationA" str, intptr
; res = GetDiskSpaceInformationA(rootPath, varptr(diskSpaceInfo))
; rootPath : LPCSTR optional -> "str"
; diskSpaceInfo : DISK_SPACE_INFORMATION* 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetDiskSpaceInformationA = kernel32.NewProc("GetDiskSpaceInformationA")
)

// rootPath (LPCSTR optional), diskSpaceInfo (DISK_SPACE_INFORMATION* out)
r1, _, err := procGetDiskSpaceInformationA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(rootPath))),
	uintptr(diskSpaceInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetDiskSpaceInformationA(
  rootPath: PAnsiChar;   // LPCSTR optional
  diskSpaceInfo: Pointer   // DISK_SPACE_INFORMATION* out
): Integer; stdcall;
  external 'KERNEL32.dll' name 'GetDiskSpaceInformationA';

result := DllCall("KERNEL32\GetDiskSpaceInformationA"
    , "AStr", rootPath   ; LPCSTR optional
    , "Ptr", diskSpaceInfo   ; DISK_SPACE_INFORMATION* out
    , "Int")   ; return: HRESULT

●GetDiskSpaceInformationA(rootPath, diskSpaceInfo) = DLL("KERNEL32.dll", "int GetDiskSpaceInformationA(char*, void*)")
# 呼び出し: GetDiskSpaceInformationA(rootPath, diskSpaceInfo)
# rootPath : LPCSTR optional -> "char*"
# diskSpaceInfo : DISK_SPACE_INFORMATION* out -> "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)。