FindFileData.dwFileAttributes get wrong value! Any ideas?

[Rence]

FindFileData.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY

FILE_ATTRIBUTE_DIRECTORY value is 16 or hex 0x00000010
on my directory value is 17 or hex 0x00000011
in MSDN i found all possible attributes but there is no my value... Any ideas???

The file attributes. This member can be a combination of one or more of the following values.
Attribute Meaning

FILE_ATTRIBUTE_ARCHIVE
32 (0x20)



The file or directory is an archive file. Applications use this attribute to mark files for backup or removal.

FILE_ATTRIBUTE_COMPRESSED
2048 (0x800)



The file or directory is compressed. For a file, this means that all of the data in the file is compressed. For a directory, this means that compression is the default for newly created files and subdirectories.

FILE_ATTRIBUTE_DIRECTORY
16 (0x10)



The handle identifies a directory.

FILE_ATTRIBUTE_ENCRYPTED
16384 (0x4000)



The file or directory is encrypted. For a file, this means that all data in the file is encrypted. For a directory, this means that encryption is the default for newly created files and subdirectories.

FILE_ATTRIBUTE_HIDDEN
2 (0x2)



The file or directory is hidden. It is not included in an ordinary directory listing.

FILE_ATTRIBUTE_NORMAL
128 (0x80)



The file does not have other attributes. This attribute is valid only if used alone.

FILE_ATTRIBUTE_OFFLINE
4096 (0x1000)



The file data is not available immediately. This attribute indicates that the file data is physically moved to offline storage. This attribute is used by Remote Storage, the hierarchical storage management software. Applications should not arbitrarily change this attribute.

FILE_ATTRIBUTE_READONLY
1 (0x1)



The file or directory is read-only. Applications can read the file, but cannot write to it or delete it. If it is a directory, applications cannot delete it.

FILE_ATTRIBUTE_REPARSE_POINT
1024 (0x400)



The file or directory has an associated reparse point.

FILE_ATTRIBUTE_SPARSE_FILE
512 (0x200)



The file is a sparse file.

FILE_ATTRIBUTE_SYSTEM
4 (0x4)



The file or directory is part of the operating system or is used exclusively by the operating system.

FILE_ATTRIBUTE_TEMPORARY
256 (0x100)



The file is being used for temporary storage. File systems avoid writing data back to mass storage if sufficient cache memory is available, because often the application deletes the temporary file after the handle is closed. In that case, the system can entirely avoid writing the data. Otherwise, the data will be written after the handle is closed.

FILE_ATTRIBUTE_VIRTUAL
65536 (0x10000)



A file is a virtual file.

[GCDEF]

The bits can be combined. 17 would be a read only directory.

[Rence]

FindFileData.dwFileAttributes == FILE_ATTRIBUTE_READONLY not equal. Can it be from different file system? or from diferent OS?

[GCDEF]

FindFileData.dwFileAttributes == FILE_ATTRIBUTE_READONLY not equal. Can it be from different file system? or from diferent OS?

17 is not equal 1, so you don't check like that. You need to use bit masking.

if(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_READONLY)

[Paul McKenzie]

FindFileData.dwFileAttributes == FILE_ATTRIBUTE_READONLY not equal. Can it be from different file system? or from diferent OS?

So how would you represent a read-only directory? It is a combination of two of those values.

16 - Directory
1 - Read Only

See how it works now? Those values are bits that are set within the return value. So if you want to check if the item is read only, and you don't care if it's a directory.

if ( FindFileData.dwFileAttributes & FILE_ATTRIBUTE_READONLY )

If you don't know what the single "&" does, look up "bitwise AND" in your favourite C++ book.

Regards,

Paul McKenzie

[Rence]

thanks I got a point