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GetClassFileOrMime

関数

ファイル名やデータ、MIME型から関連するクラスIDを判定する。

DLLurlmon.dll呼出規約winapi

シグネチャ

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

HRESULT GetClassFileOrMime(
    IBindCtx* pBC,   // optional
    LPCWSTR szFilename,   // optional
    void* pBuffer,   // optional
    DWORD cbSize,
    LPCWSTR szMime,   // optional
    DWORD dwReserved,
    GUID* pclsid
);

パラメーター

名前	型	方向
pBC	IBindCtx*	inoptional
szFilename	LPCWSTR	inoptional
pBuffer	void*	inoptional
cbSize	DWORD	in
szMime	LPCWSTR	inoptional
dwReserved	DWORD	in
pclsid	GUID*	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT GetClassFileOrMime(
    IBindCtx* pBC,   // optional
    LPCWSTR szFilename,   // optional
    void* pBuffer,   // optional
    DWORD cbSize,
    LPCWSTR szMime,   // optional
    DWORD dwReserved,
    GUID* pclsid
);

[DllImport("urlmon.dll", ExactSpelling = true)]
static extern int GetClassFileOrMime(
    IntPtr pBC,   // IBindCtx* optional
    [MarshalAs(UnmanagedType.LPWStr)] string szFilename,   // LPCWSTR optional
    IntPtr pBuffer,   // void* optional
    uint cbSize,   // DWORD
    [MarshalAs(UnmanagedType.LPWStr)] string szMime,   // LPCWSTR optional
    uint dwReserved,   // DWORD
    out Guid pclsid   // GUID* out
);

<DllImport("urlmon.dll", ExactSpelling:=True)>
Public Shared Function GetClassFileOrMime(
    pBC As IntPtr,   ' IBindCtx* optional
    <MarshalAs(UnmanagedType.LPWStr)> szFilename As String,   ' LPCWSTR optional
    pBuffer As IntPtr,   ' void* optional
    cbSize As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> szMime As String,   ' LPCWSTR optional
    dwReserved As UInteger,   ' DWORD
    <Out> ByRef pclsid As Guid   ' GUID* out
) As Integer
End Function

' pBC : IBindCtx* optional
' szFilename : LPCWSTR optional
' pBuffer : void* optional
' cbSize : DWORD
' szMime : LPCWSTR optional
' dwReserved : DWORD
' pclsid : GUID* out
Declare PtrSafe Function GetClassFileOrMime Lib "urlmon" ( _
    ByVal pBC As LongPtr, _
    ByVal szFilename As LongPtr, _
    ByVal pBuffer As LongPtr, _
    ByVal cbSize As Long, _
    ByVal szMime As LongPtr, _
    ByVal dwReserved As Long, _
    ByVal pclsid 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

GetClassFileOrMime = ctypes.windll.urlmon.GetClassFileOrMime
GetClassFileOrMime.restype = ctypes.c_int
GetClassFileOrMime.argtypes = [
    ctypes.c_void_p,  # pBC : IBindCtx* optional
    wintypes.LPCWSTR,  # szFilename : LPCWSTR optional
    ctypes.POINTER(None),  # pBuffer : void* optional
    wintypes.DWORD,  # cbSize : DWORD
    wintypes.LPCWSTR,  # szMime : LPCWSTR optional
    wintypes.DWORD,  # dwReserved : DWORD
    ctypes.c_void_p,  # pclsid : GUID* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('urlmon.dll')
GetClassFileOrMime = Fiddle::Function.new(
  lib['GetClassFileOrMime'],
  [
    Fiddle::TYPE_VOIDP,  # pBC : IBindCtx* optional
    Fiddle::TYPE_VOIDP,  # szFilename : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pBuffer : void* optional
    -Fiddle::TYPE_INT,  # cbSize : DWORD
    Fiddle::TYPE_VOIDP,  # szMime : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwReserved : DWORD
    Fiddle::TYPE_VOIDP,  # pclsid : GUID* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "urlmon")]
extern "system" {
    fn GetClassFileOrMime(
        pBC: *mut core::ffi::c_void,  // IBindCtx* optional
        szFilename: *const u16,  // LPCWSTR optional
        pBuffer: *mut (),  // void* optional
        cbSize: u32,  // DWORD
        szMime: *const u16,  // LPCWSTR optional
        dwReserved: u32,  // DWORD
        pclsid: *mut GUID  // GUID* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("urlmon.dll")]
public static extern int GetClassFileOrMime(IntPtr pBC, [MarshalAs(UnmanagedType.LPWStr)] string szFilename, IntPtr pBuffer, uint cbSize, [MarshalAs(UnmanagedType.LPWStr)] string szMime, uint dwReserved, out Guid pclsid);
"@
$api = Add-Type -MemberDefinition $sig -Name 'urlmon_GetClassFileOrMime' -Namespace Win32 -PassThru
# $api::GetClassFileOrMime(pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, pclsid)

#uselib "urlmon.dll"
#func global GetClassFileOrMime "GetClassFileOrMime" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; GetClassFileOrMime pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, varptr(pclsid)   ; 戻り値は stat
; pBC : IBindCtx* optional -> "sptr"
; szFilename : LPCWSTR optional -> "sptr"
; pBuffer : void* optional -> "sptr"
; cbSize : DWORD -> "sptr"
; szMime : LPCWSTR optional -> "sptr"
; dwReserved : DWORD -> "sptr"
; pclsid : GUID* 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 "urlmon.dll"
#cfunc global GetClassFileOrMime "GetClassFileOrMime" sptr, wstr, sptr, int, wstr, int, var
; res = GetClassFileOrMime(pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, pclsid)
; pBC : IBindCtx* optional -> "sptr"
; szFilename : LPCWSTR optional -> "wstr"
; pBuffer : void* optional -> "sptr"
; cbSize : DWORD -> "int"
; szMime : LPCWSTR optional -> "wstr"
; dwReserved : DWORD -> "int"
; pclsid : GUID* 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 "urlmon.dll"
#cfunc global GetClassFileOrMime "GetClassFileOrMime" sptr, wstr, sptr, int, wstr, int, sptr
; res = GetClassFileOrMime(pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, varptr(pclsid))
; pBC : IBindCtx* optional -> "sptr"
; szFilename : LPCWSTR optional -> "wstr"
; pBuffer : void* optional -> "sptr"
; cbSize : DWORD -> "int"
; szMime : LPCWSTR optional -> "wstr"
; dwReserved : DWORD -> "int"
; pclsid : GUID* 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 GetClassFileOrMime(IBindCtx* pBC, LPCWSTR szFilename, void* pBuffer, DWORD cbSize, LPCWSTR szMime, DWORD dwReserved, GUID* pclsid)
#uselib "urlmon.dll"
#cfunc global GetClassFileOrMime "GetClassFileOrMime" intptr, wstr, intptr, int, wstr, int, var
; res = GetClassFileOrMime(pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, pclsid)
; pBC : IBindCtx* optional -> "intptr"
; szFilename : LPCWSTR optional -> "wstr"
; pBuffer : void* optional -> "intptr"
; cbSize : DWORD -> "int"
; szMime : LPCWSTR optional -> "wstr"
; dwReserved : DWORD -> "int"
; pclsid : GUID* 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 GetClassFileOrMime(IBindCtx* pBC, LPCWSTR szFilename, void* pBuffer, DWORD cbSize, LPCWSTR szMime, DWORD dwReserved, GUID* pclsid)
#uselib "urlmon.dll"
#cfunc global GetClassFileOrMime "GetClassFileOrMime" intptr, wstr, intptr, int, wstr, int, intptr
; res = GetClassFileOrMime(pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, varptr(pclsid))
; pBC : IBindCtx* optional -> "intptr"
; szFilename : LPCWSTR optional -> "wstr"
; pBuffer : void* optional -> "intptr"
; cbSize : DWORD -> "int"
; szMime : LPCWSTR optional -> "wstr"
; dwReserved : DWORD -> "int"
; pclsid : GUID* 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 (
	urlmon = windows.NewLazySystemDLL("urlmon.dll")
	procGetClassFileOrMime = urlmon.NewProc("GetClassFileOrMime")
)

// pBC (IBindCtx* optional), szFilename (LPCWSTR optional), pBuffer (void* optional), cbSize (DWORD), szMime (LPCWSTR optional), dwReserved (DWORD), pclsid (GUID* out)
r1, _, err := procGetClassFileOrMime.Call(
	uintptr(pBC),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szFilename))),
	uintptr(pBuffer),
	uintptr(cbSize),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szMime))),
	uintptr(dwReserved),
	uintptr(pclsid),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetClassFileOrMime(
  pBC: Pointer;   // IBindCtx* optional
  szFilename: PWideChar;   // LPCWSTR optional
  pBuffer: Pointer;   // void* optional
  cbSize: DWORD;   // DWORD
  szMime: PWideChar;   // LPCWSTR optional
  dwReserved: DWORD;   // DWORD
  pclsid: PGUID   // GUID* out
): Integer; stdcall;
  external 'urlmon.dll' name 'GetClassFileOrMime';

result := DllCall("urlmon\GetClassFileOrMime"
    , "Ptr", pBC   ; IBindCtx* optional
    , "WStr", szFilename   ; LPCWSTR optional
    , "Ptr", pBuffer   ; void* optional
    , "UInt", cbSize   ; DWORD
    , "WStr", szMime   ; LPCWSTR optional
    , "UInt", dwReserved   ; DWORD
    , "Ptr", pclsid   ; GUID* out
    , "Int")   ; return: HRESULT

●GetClassFileOrMime(pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, pclsid) = DLL("urlmon.dll", "int GetClassFileOrMime(void*, char*, void*, dword, char*, dword, void*)")
# 呼び出し: GetClassFileOrMime(pBC, szFilename, pBuffer, cbSize, szMime, dwReserved, pclsid)
# pBC : IBindCtx* optional -> "void*"
# szFilename : LPCWSTR optional -> "char*"
# pBuffer : void* optional -> "void*"
# cbSize : DWORD -> "dword"
# szMime : LPCWSTR optional -> "char*"
# dwReserved : DWORD -> "dword"
# pclsid : GUID* 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)。