docs/latex/wx/filesys.tex

   1 %
   2 % automatically generated by HelpGen from
   3 % filesystem.tex at 21/Mar/99 23:00:52
   4 %
   5
   6 \section{\class{wxFileSystem}}\label{wxfilesystem}
   7
   8 This class provides an interface for opening files on different
   9 file systems. It can handle absolute and/or local filenames.
  10 It uses a system of \helpref{handlers}{wxfilesystemhandler} to
  11 provide access to user-defined virtual file systems.
  12
  13 \wxheading{Derived from}
  14
  15 \helpref{wxObject}{wxobject}
  16
  17 \wxheading{Include files}
  18
  19 <wx/filesys.h>
  20
  21 \wxheading{See Also}
  22
  23 \helpref{wxFileSystemHandler}{wxfilesystemhandler},
  24 \helpref{wxFSFile}{wxfsfile},
  25 \helpref{Overview}{fs}
  26
  27 \latexignore{\rtfignore{\wxheading{Members}}}
  28
  29 \membersection{wxFileSystem::wxFileSystem}\label{wxfilesystemwxfilesystem}
  30
  31 \func{}{wxFileSystem}{\void}
  32
  33 Constructor.
  34
  35 \membersection{wxFileSystem::AddHandler}\label{wxfilesystemaddhandler}
  36
  37 \func{static void}{AddHandler}{\param{wxFileSystemHandler }{*handler}}
  38
  39 This static function adds new handler into the list of handlers.
  40 The \helpref{handlers}{wxfilesystemhandler} provide access to virtual FS.
  41
  42 \wxheading{Note}
  43
  44 You can call:
  45
  46 \begin{verbatim}
  47 wxFileSystem::AddHandler(new My_FS_Handler);
  48 \end{verbatim}
  49
  50 This is because (a) AddHandler is a static method, and (b) the handlers
  51 are deleted in wxFileSystem's destructor so that you don't have to
  52 care about it.
  53
  54 \membersection{wxFileSystem::ChangePathTo}\label{wxfilesystemchangepathto}
  55
  56 \func{void}{ChangePathTo}{\param{const wxString\& }{location}, \param{bool }{is\_dir = FALSE}}
  57
  58 Sets the current location. {\it location} parameter passed to
  59 \helpref{OpenFile}{wxfilesystemopenfile} is relative to this path.
  60
  61 {\bf Caution! } Unless {\it is\_dir} is TRUE the {\it location} parameter
  62 is not directory name but the name of the file in this directory!! All these
  63 commands change path to "dir/subdir/" :
  64
  65 \begin{verbatim}
  66 ChangePathTo("dir/subdir/xh.htm");
  67 ChangePathTo("dir/subdir", TRUE);
  68 ChangePathTo("dir/subdir/", TRUE);
  69 \end{verbatim}
  70
  71 \wxheading{Parameters}
  72
  73 \docparam{location}{the new location. Its meaning depends on value of {\it is\_dir}}
  74
  75 \docparam{is\_dir}{if TRUE {\it location} is new directory. If FALSE (default)
  76 {\it location} is {\bf file in} the new directory.}
  77
  78 \wxheading{Example}
  79
  80 \begin{verbatim}
  81 f = fs -> OpenFile("hello.htm"); // opens file 'hello.htm'
  82 fs -> ChangePathTo("subdir/folder", TRUE);
  83 f = fs -> OpenFile("hello.htm"); // opens file 'subdir/folder/hello.htm' !!
  84 \end{verbatim}
  85
  86 \membersection{wxFileSystem::GetPath}\label{wxfilesystemgetpath}
  87
  88 \func{wxString}{GetPath}{\void}
  89
  90 Returns actual path (set by \helpref{ChangePathTo}{wxfilesystemchangepathto}).
  91
  92
  93 \membersection{wxFileSystem::FindFirst}\label{wxfilesystemfindfirst}
  94
  95 \func{wxString}{FindFirst}{\param{const wxString\& }{wildcard}, \param{int }{flags = 0}}
  96
  97 Works like \helpref{wxFindFirstFile}{wxfindfirstfile}. Returns name of the first
  98 filename (withing filesystem's current path) that matches {\it wildcard}. {\it flags} may be one of
  99 wxFILE (only files), wxDIR (only directories) or 0 (both).
 100
 101 \membersection{wxFileSystem::FindNext}\label{wxfilesystemfindnext}
 102
 103 \func{wxString}{FindNext}{\void}
 104
 105 Returns next filename that matches parameters passed to \helpref{FindFirst}{wxfilesystemfindfirst}.
 106
 107
 108 \membersection{wxFileSystem::OpenFile}\label{wxfilesystemopenfile}
 109
 110 \func{wxFSFile*}{OpenFile}{\param{const wxString\& }{location}}
 111
 112 Opens file and returns pointer to \helpref{wxFSFile}{wxfsfile} object
 113 or NULL if failed. It first tries to open the file in relative scope
 114 (based on value passed to ChangePathTo() method) and then as an
 115 absolute path.
 116