Note

Access to this page requires authorization. You can try signing in or .

Access to this page requires authorization. You can try .

FILE_NOTIFY_INFORMATION structure (winnt.h)

Describes the changes found by the ReadDirectoryChangesW function.

Syntax

typedef struct _FILE_NOTIFY_INFORMATION {
 DWORD NextEntryOffset;
 DWORD Action;
 DWORD FileNameLength;
 WCHAR FileName[1];
} FILE_NOTIFY_INFORMATION, *PFILE_NOTIFY_INFORMATION;

Members

NextEntryOffset

The number of bytes that must be skipped to get to the next record. A value of zero indicates that this is the last record.

Action

The type of change that has occurred. This member can be one of the following values.

Value Meaning
FILE_ACTION_ADDED
0x00000001
 The file was added to the directory.
FILE_ACTION_REMOVED
0x00000002
 The file was removed from the directory.
FILE_ACTION_MODIFIED
0x00000003
 The file was modified. This can be a change in the time stamp or attributes.
FILE_ACTION_RENAMED_OLD_NAME
0x00000004
 The file was renamed and this is the old name.
FILE_ACTION_RENAMED_NEW_NAME
0x00000005
 The file was renamed and this is the new name.

FileNameLength

The size of the file name portion of the record, in bytes. Note that this value does not include the terminating null character.

FileName[1]

A variable-length field that contains the file name relative to the directory handle. The file name is in the Unicode character format and is not null-terminated.

If there is both a short and long name for the file, the function will return one of these names, but it is unspecified which one.

Requirements

Requirement Value
Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Header winnt.h (include Windows.h)

See also

ReadDirectoryChangesW

Feedback

Was this page helpful?

Additional resources

  • Last updated on