The SetFileAttributes function sets a files attributes.
BOOL SetFileAttributes(
LPCTSTR lpFileName, |
// address of filename |
DWORD dwFileAttributes |
// attributes to set |
); |
Windows 95: This string must not exceed MAX_PATH characters.
Windows NT: There is a default string size limit for paths of MAX_PATH
characters. This limit is related to how the SetFileAttributes function
parses paths. An application can transcend this limit and send in paths longer
than MAX_PATH characters by calling the wide (W) version of SetFileAttributes
and prepending \\?\ to the path.
The \\?\ tells the function to
turn off path parsing; it lets paths longer than MAX_PATH be used with SetFileAttributesW.
This also works with UNC names. The \\?\
is ignored as part of the path. For example, \\?\C:\myworld\private
is seen as C:\myworld\private,
and \\?\UNC\wow\hotstuff\coolapps
is seen as \\wow\hotstuff\coolapps.
Value |
Meaning |
FILE_ATTRIBUTE_ARCHIVE |
The file is an archive file. Applications use this value to mark files for backup or removal. |
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 set. 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. File systems attempt to keep all of the data in memory for quicker access rather than flushing the data back to mass storage. A temporary file should be deleted by the application as soon as it is no longer needed. |
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
You cannot use the SetFileAttribute function to set a files compression state. Setting FILE_ATTRIBUTE_COMPRESSED in the dwFileAttributes parameter does nothing. Use the DeviceIoControl function and the FSCTL_SET_COMPRESSION operation to set a files compression state.
DeviceIoControl, FSCTL_SET_COMPRESSION, GetFileAttributes
file: /Techref/os/win/api/win32/func/src/f78_19.htm, 5KB, , updated: 2000/4/7 11:19, local time: 2024/11/5 06:28,
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