怎样改变文件属性?

怎样知道文件是什么样的属性？如果想去掉只读属性，应该怎么做？ 问题点数：0、回复次数：2Top

1 楼caoruomou（caoruomou）回复于 2003-12-04 21:37:35 得分 0

attrbyte=FileGetAttr("c:\\hk.txt");  
  //取得文件属性  
  if((attrbyte   &   faReadOnly)==faReadOnly)  
          只读  
  if((attrbyte   &   faHidden)==faHidden)  
          //隐藏  
   
  if((attrbyte   &   faSysFile)==faSysFile)  
          //系统Top

2 楼mywfool（阿赖耶识）回复于 2003-12-04 21:42:59 得分 0

取得属性  
  DWORD   GetFileAttributes(LPCTSTR   lpFileName)  
  设置属性  
  BOOL   SetFileAttributes(  
   
          LPCTSTR   lpFileName, //   address   of   filename    
          DWORD   dwFileAttributes   //   address   of   attributes   to   set    
        );  
     
   
  Parameters  
   
  lpFileName  
   
  Points   to   a   string   that   specifies   the   name   of   the   file   whose   attributes   are   to   be   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\bill_g_1\hotstuff\coolapps"   is   seen   as   "\\bill_g_1\hotstuff\coolapps".  
   
  dwFileAttributes  
   
  Specifies   the   file   attributes   to   set   for   the   file.   This   parameter   can   be   a   combination   of   the   following   values.   However,   all   other   values   override   FILE_ATTRIBUTE_NORMAL.    
   
  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.  
     
   
  Return   Values  
   
  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.Top

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• 属性
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