c语言中的文件属性
请问，c语言中更改已经存在文件属性的函数是什么？ 问题点数：100、回复次数：8Top
1 楼chenghl（程门立雪）回复于 2002-11-27 11:07:15 得分 0
SetStatus(LPCTSTR lpszFileName, const CFileStatus& status )Top
2 楼chenghl（程门立雪）回复于 2002-11-27 11:13:38 得分 80
sorry，that's C++;
to change file permission, use
int _chmod( const char *filename, int pmode );
int _wchmod( const wchar_t *filename, int pmode );
to change the file size,use
_int _chsize( int handle, long size );
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3 楼Behard（我爱天安门）回复于 2002-11-27 11:24:19 得分 20
试一试以下函数：
fstat
setftime
fblk
ffblk <DIR.H>
哌哌哌?
DOS file control block structure.
struct ffblk {
char ff_reserved[21]; /* reserved by DOS */
char ff_attrib; /* attribute found */
int ff_ftime; /* file time */
int ff_fdate; /* file date */
long ff_fsize; /* file size */
char ff_name[13]; /* found file name */
};
Remarks:
ff_ftime and ff_fdate are 16-bit structures divided into bit fields for
referring to the current date and time.
ff_ftime ?5.....11?0........5?.......0?
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韧贤贤贤贤释贤贤贤贤贤释贤贤贤贤?
Hours Minutes Seconds/2
ff_fdate ?5..........9?.....5?.......0?
苘苘苘苘 掏淹淹淹淹淹淹瓮淹淹淹瓮淹淹淹淹?
韧贤贤贤贤贤贤释贤贤贤释贤贤贤贤?
Years since Month Day
1980
The structure of these fields was established by DOS.
See Also:
findfirst ftime structure find_t structure
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4 楼Behard（我爱天安门）回复于 2002-11-27 11:25:29 得分 0
应该是 ffblk 吧。Top
5 楼Behard（我爱天安门）回复于 2002-11-27 11:36:29 得分 0
DOS file attributes
Constant ?Description
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FA_RDONLY ?Read-only attribute
FA_HIDDEN ?Hidden file
FA_SYSTEM ?System file
FA_LABEL ?Volume label
FA_DIREC ?Directory
FA_ARCH ?Archive
For more detailed information about these attributes, refer to your DOS
reference manuals.
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6 楼crazy_diablo（狂暴）回复于 2002-11-27 11:46:15 得分 0
解决了，使用_chmod（）这个函数
谢谢各位Top
7 楼Behard（我爱天安门）回复于 2002-11-27 12:02:04 得分 0
捱哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌咻
?_chmod, ? <IO.H>
?_dos_getfileattr, _dos_setfileattr ? <DOS.H>
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Gets or sets file attributes
Declaration:
?int _chmod(const char *path, int func [ , int attrib ] );
?int _dos_getfileattr(const char *path, unsigned *attribp);
?int _dos_setfileattr(const char *path, unsigned attrib);
Remarks:
These functions get and/or set the DOS file attributes of the file given by
*path:
?_chmod gets or sets the attributes
?_dos_getfileattr gets the attributes
?_dos_setfileattr sets the attributes
Argument ?What It Is/Does
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path ?Points to a string that names the file whose attributes are
?fetched or set; *path = first character of that string
func ?Specifies whether _chmod gets or sets attributes of the file
?*path:
? ?If func = 0, _chmod returns the current DOS attributes
? ?If func = 1, _chmod sets the attributes to attrib
attrib ?One of the DOS file-attribute symbolic constants defined
?in DOS.H.
attribp ?Points to location where _dos_getfileattr stores attributes
Return Value:
?On success,
?_chmod returns file attribute word
?_dos_getfileattr and _dos_setfileattr return 0
?On error,
?_chmod returns -1 and sets errno to one of the following:
ENOENT (Path or file name not found)
EACCES (Permission denied)
?_dos_getfileattr returns the DOS error code and sets errno to
ENOENT or EACCES
?_dos_setfileattr returns the DOS error code and sets errno to
ENOENT
Portability:
?DOS ?UNIX ?Windows ?ANSI C ?C++ Only ?
?Yes ? ? Yes ? ? ?
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See Also:
chmod _creat stat
Examples:
_chmod example _dos_getfileattr example
_dos_setfileattr example
FA_RDONLY //?Read-only attribute
FA_HIDDEN //?Hidden file
FA_SYSTEM //?System file
FA_LABEL //?Volume label
FA_DIREC //?Directory
FA_ARCH //?Archive
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8 楼Behard（我爱天安门）回复于 2002-11-27 12:27:32 得分 0
要给分呀！Top
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