CFile类的SetStatus不能对文件夹操作吗?

[feng0hua0]

CFileStatus Status;
if (CFile::GetStatus(m_Location,Status))
{
	Status.m_ctime = newCreateTime;
	Status.m_mtime = newLastTime;
	CFile::SetStatus(m_Location,Status);
}

如果这里的m_Location是个文件,那么执行没有问题,文件属性被改成Status了,但是如果是个文件夹,那么会弹出提示"对 一未命名文件 的存取被拒绝"
这是为什么?..难道不能用SetStatus修改文件夹属性?

[feng0hua0]

沉的好快...

[qq14923349]

能改成隐藏吗

[feng0hua0]

也不行..

[wangk]

文件夹请直接使用API操作。

void PASCAL CFile::SetStatus(LPCTSTR lpszFileName, const CFileStatus& status)
{
	DWORD wAttr;
	FILETIME creationTime;
	FILETIME lastAccessTime;
	FILETIME lastWriteTime;
	LPFILETIME lpCreationTime = NULL;
	LPFILETIME lpLastAccessTime = NULL;
	LPFILETIME lpLastWriteTime = NULL;

	if ((wAttr = GetFileAttributes((LPTSTR)lpszFileName)) == (DWORD)-1L)
		CFileException::ThrowOsError((LONG)GetLastError(), lpszFileName);

	if ((DWORD)status.m_attribute != wAttr && (wAttr & readOnly))
	{
		// Set file attribute, only if currently readonly.
		// This way we will be able to modify the time assuming the
		// caller changed the file from readonly.

		if (!SetFileAttributes((LPTSTR)lpszFileName, (DWORD)status.m_attribute))
			CFileException::ThrowOsError((LONG)GetLastError(), lpszFileName);
	}

	// last modification time
	if (status.m_mtime.GetTime() != 0)
	{
		AfxTimeToFileTime(status.m_mtime, &lastWriteTime);
		lpLastWriteTime = &lastWriteTime;

		// last access time
		if (status.m_atime.GetTime() != 0)
		{
			AfxTimeToFileTime(status.m_atime, &lastAccessTime);
			lpLastAccessTime = &lastAccessTime;
		}

		// create time
		if (status.m_ctime.GetTime() != 0)
		{
			AfxTimeToFileTime(status.m_ctime, &creationTime);
			lpCreationTime = &creationTime;
		}

		HANDLE hFile = ::CreateFile(lpszFileName, GENERIC_READ|GENERIC_WRITE,
			FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
			NULL);

		if (hFile == INVALID_HANDLE_VALUE)
			CFileException::ThrowOsError((LONG)::GetLastError(), lpszFileName);

		if (!SetFileTime((HANDLE)hFile, lpCreationTime, lpLastAccessTime, lpLastWriteTime))
		{
			LONG sc=(LONG)::GetLastError();
			::CloseHandle(hFile);
			CFileException::ThrowOsError(sc, lpszFileName);
		}

		if (!::CloseHandle(hFile))
			CFileException::ThrowOsError((LONG)::GetLastError(), lpszFileName);
	}

	if ((DWORD)status.m_attribute != wAttr && !(wAttr & readOnly))
	{
		if (!SetFileAttributes((LPTSTR)lpszFileName, (DWORD)status.m_attribute))
			CFileException::ThrowOsError((LONG)GetLastError(), lpszFileName);
	}
}

从MFC的源码看来，这个函数不能直接对目录操作。

MSDN上的说法
An application cannot create a directory by using CreateFile. The application must call CreateDirectory or CreateDirectoryEx to create a directory. To opening a directory by using CreateFile, use the FILE_FLAG_BACKUP_SEMANTICS flag.

也就是自己加上FILE_FLAG_BACKUP_SEMANTICS来打开目录，其他更详细的限制请参考MSDN的提醒。

[bohut]

参考：
http://digi.it.sohu.com/20060306/n242142832.shtml

[liangxd09]

答案是不能，看看msdn吧