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BY_HANDLE_FILE_INFORMATION info  Overview  Group

The BY_HANDLE_FILE_INFORMATION structure contains information retrieved by the GetFileInformationByHandle function.

typedef struct _BY_HANDLE_FILE_INFORMATION { // bhfi 

    DWORD    dwFileAttributes; 

    FILETIME ftCreationTime; 

    FILETIME ftLastAccessTime; 

    FILETIME ftLastWriteTime; 

    DWORD    dwVolumeSerialNumber; 

    DWORD    nFileSizeHigh; 

    DWORD    nFileSizeLow; 

    DWORD    nNumberOfLinks; 

    DWORD    nFileIndexHigh; 

    DWORD    nFileIndexLow; 

} BY_HANDLE_FILE_INFORMATION; 

 

Members

dwFileAttributes
Specifies file attributes. This member can be one or more of the following values:

Value

Meaning

FILE_ATTRIBUTE_ARCHIVE

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

FILE_ATTRIBUTE_COMPRESSED

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

The file is a directory.

FILE_ATTRIBUTE_HIDDEN

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

FILE_ATTRIBUTE_NORMAL

The file has no other attributes. This value is valid only if used alone.

FILE_ATTRIBUTE_OFFLINE

The data of the file is not immediately available. Indicates that the file data has been physically moved to offline storage.

FILE_ATTRIBUTE_READONLY

The file is read-only. Applications can read the file but cannot write to it or delete it.

FILE_ATTRIBUTE_SYSTEM

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

FILE_ATTRIBUTE_TEMPORARY

The file is being used for temporary storage. Applications should write to the file only if absolutely necessary. Most of the file’s data remains in memory without being flushed to the media because the file will soon be deleted.

ftCreationTime
Specifies the time the file was created. If the underlying file system does not support this time member, ftCreationTime is zero.
ftLastAccessTime
Specifies the time the file was last accessed. If the underlying file system does not support this time member, ftLastAccessTime is zero.
ftLastWriteTime
Specifies the last time the file was written to.
dwVolumeSerialNumber
Specifies the serial number of the volume that contains the file.
nFileSizeHigh
Specifies the high-order word of the file size.
nFileSizeLow
Specifies the low-order word of the file size.
nNumberOfLinks
Specifies the number of links to this file. For the FAT file system this member is always 1. For NTFS, it may be more than 1.
nFileIndexHigh
Specifies the high-order word of a unique identifier associated with the file.
nFileIndexLow
Specifies the low-order word of a unique identifier associated with the file. This identifier and the volume serial number uniquely identify a file. This number may change when the system is restarted or when the file is opened. After a process opens a file, the identifier is constant until the file is closed. An application can use this identifier and the volume serial number to determine whether two handles refer to the same file.

See Also

GetFileInformationByHandle 

See also:


file: /Techref/os/win/api/win32/struc/src/str01_5.htm, 7KB, , updated: 2001/6/23 20:19, local time: 2022/5/17 01:20,
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