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FilterGetDosName

関数

ボリューム名から対応するMS-DOSデバイス名を取得する。

DLLFLTLIB.dll呼出規約winapi

シグネチャ

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

HRESULT FilterGetDosName(
    LPCWSTR lpVolumeName,
    LPWSTR lpDosName,
    DWORD dwDosNameBufferSize
);

パラメーター

名前	型	方向
lpVolumeName	LPCWSTR	in
lpDosName	LPWSTR	out
dwDosNameBufferSize	DWORD	in

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT FilterGetDosName(
    LPCWSTR lpVolumeName,
    LPWSTR lpDosName,
    DWORD dwDosNameBufferSize
);

[DllImport("FLTLIB.dll", ExactSpelling = true)]
static extern int FilterGetDosName(
    [MarshalAs(UnmanagedType.LPWStr)] string lpVolumeName,   // LPCWSTR
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpDosName,   // LPWSTR out
    uint dwDosNameBufferSize   // DWORD
);

<DllImport("FLTLIB.dll", ExactSpelling:=True)>
Public Shared Function FilterGetDosName(
    <MarshalAs(UnmanagedType.LPWStr)> lpVolumeName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpDosName As System.Text.StringBuilder,   ' LPWSTR out
    dwDosNameBufferSize As UInteger   ' DWORD
) As Integer
End Function

' lpVolumeName : LPCWSTR
' lpDosName : LPWSTR out
' dwDosNameBufferSize : DWORD
Declare PtrSafe Function FilterGetDosName Lib "fltlib" ( _
    ByVal lpVolumeName As LongPtr, _
    ByVal lpDosName As LongPtr, _
    ByVal dwDosNameBufferSize As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

FilterGetDosName = ctypes.windll.fltlib.FilterGetDosName
FilterGetDosName.restype = ctypes.c_int
FilterGetDosName.argtypes = [
    wintypes.LPCWSTR,  # lpVolumeName : LPCWSTR
    wintypes.LPWSTR,  # lpDosName : LPWSTR out
    wintypes.DWORD,  # dwDosNameBufferSize : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('FLTLIB.dll')
FilterGetDosName = Fiddle::Function.new(
  lib['FilterGetDosName'],
  [
    Fiddle::TYPE_VOIDP,  # lpVolumeName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpDosName : LPWSTR out
    -Fiddle::TYPE_INT,  # dwDosNameBufferSize : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "fltlib")]
extern "system" {
    fn FilterGetDosName(
        lpVolumeName: *const u16,  // LPCWSTR
        lpDosName: *mut u16,  // LPWSTR out
        dwDosNameBufferSize: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("FLTLIB.dll")]
public static extern int FilterGetDosName([MarshalAs(UnmanagedType.LPWStr)] string lpVolumeName, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpDosName, uint dwDosNameBufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'FLTLIB_FilterGetDosName' -Namespace Win32 -PassThru
# $api::FilterGetDosName(lpVolumeName, lpDosName, dwDosNameBufferSize)

#uselib "FLTLIB.dll"
#func global FilterGetDosName "FilterGetDosName" sptr, sptr, sptr
; FilterGetDosName lpVolumeName, varptr(lpDosName), dwDosNameBufferSize   ; 戻り値は stat
; lpVolumeName : LPCWSTR -> "sptr"
; lpDosName : LPWSTR out -> "sptr"
; dwDosNameBufferSize : DWORD -> "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 "FLTLIB.dll"
#cfunc global FilterGetDosName "FilterGetDosName" wstr, var, int
; res = FilterGetDosName(lpVolumeName, lpDosName, dwDosNameBufferSize)
; lpVolumeName : LPCWSTR -> "wstr"
; lpDosName : LPWSTR out -> "var"
; dwDosNameBufferSize : DWORD -> "int"
; ※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 "FLTLIB.dll"
#cfunc global FilterGetDosName "FilterGetDosName" wstr, sptr, int
; res = FilterGetDosName(lpVolumeName, varptr(lpDosName), dwDosNameBufferSize)
; lpVolumeName : LPCWSTR -> "wstr"
; lpDosName : LPWSTR out -> "sptr"
; dwDosNameBufferSize : DWORD -> "int"
; ※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 FilterGetDosName(LPCWSTR lpVolumeName, LPWSTR lpDosName, DWORD dwDosNameBufferSize)
#uselib "FLTLIB.dll"
#cfunc global FilterGetDosName "FilterGetDosName" wstr, var, int
; res = FilterGetDosName(lpVolumeName, lpDosName, dwDosNameBufferSize)
; lpVolumeName : LPCWSTR -> "wstr"
; lpDosName : LPWSTR out -> "var"
; dwDosNameBufferSize : DWORD -> "int"
; ※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 FilterGetDosName(LPCWSTR lpVolumeName, LPWSTR lpDosName, DWORD dwDosNameBufferSize)
#uselib "FLTLIB.dll"
#cfunc global FilterGetDosName "FilterGetDosName" wstr, intptr, int
; res = FilterGetDosName(lpVolumeName, varptr(lpDosName), dwDosNameBufferSize)
; lpVolumeName : LPCWSTR -> "wstr"
; lpDosName : LPWSTR out -> "intptr"
; dwDosNameBufferSize : DWORD -> "int"
; ※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 (
	fltlib = windows.NewLazySystemDLL("FLTLIB.dll")
	procFilterGetDosName = fltlib.NewProc("FilterGetDosName")
)

// lpVolumeName (LPCWSTR), lpDosName (LPWSTR out), dwDosNameBufferSize (DWORD)
r1, _, err := procFilterGetDosName.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpVolumeName))),
	uintptr(lpDosName),
	uintptr(dwDosNameBufferSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function FilterGetDosName(
  lpVolumeName: PWideChar;   // LPCWSTR
  lpDosName: PWideChar;   // LPWSTR out
  dwDosNameBufferSize: DWORD   // DWORD
): Integer; stdcall;
  external 'FLTLIB.dll' name 'FilterGetDosName';

result := DllCall("FLTLIB\FilterGetDosName"
    , "WStr", lpVolumeName   ; LPCWSTR
    , "Ptr", lpDosName   ; LPWSTR out
    , "UInt", dwDosNameBufferSize   ; DWORD
    , "Int")   ; return: HRESULT

●FilterGetDosName(lpVolumeName, lpDosName, dwDosNameBufferSize) = DLL("FLTLIB.dll", "int FilterGetDosName(char*, char*, dword)")
# 呼び出し: FilterGetDosName(lpVolumeName, lpDosName, dwDosNameBufferSize)
# lpVolumeName : LPCWSTR -> "char*"
# lpDosName : LPWSTR out -> "char*"
# dwDosNameBufferSize : DWORD -> "dword"
# 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)。